/**CFile****************************************************************

  FileName    [abc.c]

  SystemName  [ABC: Logic synthesis and verification system.]

  PackageName [Network and node package.]

  Synopsis    [Command file.]

  Author      [Alan Mishchenko]

  Affiliation [UC Berkeley]

  Date        [Ver. 1.0. Started - June 20, 2005.]

  Revision    [$Id: abc.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]

***********************************************************************/

#include "base/abc/abc.h"
#include "base/main/main.h"
#include "base/main/mainInt.h"
#include "proof/fraig/fraig.h"
#include "opt/fxu/fxu.h"
#include "opt/fxch/Fxch.h"
#include "opt/cut/cut.h"
#include "map/fpga/fpga.h"
#include "map/if/if.h"
#include "opt/sim/sim.h"
#include "opt/res/res.h"
#include "opt/lpk/lpk.h"
#include "aig/gia/giaAig.h"
#include "opt/dar/dar.h"
#include "opt/mfs/mfs.h"
#include "proof/fra/fra.h"
#include "aig/saig/saig.h"
#include "proof/int/int.h"
#include "proof/dch/dch.h"
#include "proof/ssw/ssw.h"
#include "opt/cgt/cgt.h"
#include "bool/kit/kit.h"
#include "map/amap/amap.h"
#include "opt/ret/retInt.h"
#include "sat/xsat/xsat.h"
#include "sat/satoko/satoko.h"
#include "sat/cnf/cnf.h"
#include "proof/cec/cec.h"
#include "proof/acec/acec.h"
#include "proof/pdr/pdr.h"
#include "misc/tim/tim.h"
#include "bdd/llb/llb.h"
#include "bdd/bbr/bbr.h"
#include "map/cov/cov.h"
#include "base/cmd/cmd.h"
#include "proof/abs/abs.h"
#include "sat/bmc/bmc.h"
#include "proof/ssc/ssc.h"
#include "opt/sfm/sfm.h"
#include "opt/sbd/sbd.h"
#include "bool/rpo/rpo.h"
#include "map/mpm/mpm.h"
#include "map/mio/mio.h"
#include "opt/fret/fretime.h"
#include "opt/nwk/nwkMerge.h"
#include "base/acb/acbPar.h"
#include "misc/extra/extra.h"
#include "opt/eslim/eSLIM.h"


#ifndef _WIN32
#include <unistd.h>
#endif

ABC_NAMESPACE_IMPL_START

////////////////////////////////////////////////////////////////////////
///                        DECLARATIONS                              ///
////////////////////////////////////////////////////////////////////////

//#define USE_MINISAT22

static int Abc_CommandPrintStats             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintExdc              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintIo                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintLatch             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintFanio             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintMffc              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintFactor            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintLevel             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintSupport           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintNpn               ( Abc_Frame_t * pAbc, int argc, char ** argv );
#ifdef ABC_USE_CUDD
static int Abc_CommandPrintMint              ( Abc_Frame_t * pAbc, int argc, char ** argv );
#endif
static int Abc_CommandPrintSymms             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintUnate             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintAuto              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintKMap              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintGates             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintSharing           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintXCut              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintDsd               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintCone              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintMiter             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintStatus            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPrintDelay             ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandShow                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandShowBdd                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandShowCut                ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandCollapse               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSatClp                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandStrash                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBalance                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMuxStruct              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMulti                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRenode                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCleanup                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSweep                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFastExtract            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFxch                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandEliminate              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDisjoint               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSparsify               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandLutpack                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandLutmin                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
//static int Abc_CommandImfs                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMfs                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMfs2                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMfs3                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMfse                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandLogicPush              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTrace                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandGlitch                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSpeedup                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPowerdown              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAddBuffs               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMerge                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestDec                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestNpn                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestRPO                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestTruth              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestSupp               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestRand               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRunSat                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRunEco                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRunGen                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRunScript              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRunTest                ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandRewrite                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRefactor               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRestructure            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandResubstitute           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandResubUnate             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandResubCore              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandResubCheck             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRr                     ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCascade                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandLutCasDec              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandLutCas                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBsEval                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandExtract                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandVarMin                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFaultClasses           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandExact                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBmsStart               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBmsStop                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBmsPs                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMajExact               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTwoExact               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandLutExact               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAndExact               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAllExact               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTopoExact              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandNetExact               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestExact              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMajGen                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandOrchestrate            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAIGAugmentation       ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandLogic                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandComb                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMiter                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMiter2                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDemiter                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandOrPos                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAndPos                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandZeroPo                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSwapPos                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRemovePo               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDropSat                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAddPi                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAddFlop                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAppend                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPutOnTop               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFrames                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDFrames                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSop                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBdd                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAig                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandReorder                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBidec                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandOrder                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMuxes                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCubes                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandExpand                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSplitSop               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandExtSeqDcs              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandReach                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCone                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandNode                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRange                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCof                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTopmost                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBottommost             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTopAnd                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTrim                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandShortNames             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMoveNames              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandExdcFree               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandExdcGet                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandExdcSet                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCareSet                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCut                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandEspresso               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandGen                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandGenTF                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandGenAT                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandGenPop                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandGenFsm                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCover                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDouble                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandInter                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBb2Wb                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandOutdec                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandNodeDup                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandWrap                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestColor              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTest                   ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandQuaVar                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandQuaRel                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandQuaReach               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSenseInput             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandNpnLoad                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandNpnSave                ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandSendAig                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSendStatus             ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandBackup                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRestore                ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandMinisat                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMinisimp               ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandIStrash                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandICut                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandIRewrite               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDRewrite               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDRefactor              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDc2                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDChoice                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDch                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDrwsat                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandIRewriteSeq            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandIResyn                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandISat                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandIFraig                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDFraig                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCSweep                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDProve                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbSec                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSimSec                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandMatch                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
//static int Abc_CommandHaig                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandQbf                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAigSim                 ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandFraig                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFraigTrust             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFraigStore             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFraigRestore           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFraigClean             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFraigSweep             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFraigDress             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDumpEquiv              ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandRecStart3              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRecStop3               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRecPs3                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRecAdd3                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRecDump3               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRecMerge3              ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandMap                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAmap                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPhaseMap               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandStochMap               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandUnmap                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAttach                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSuperChoice            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSuperChoiceLut         ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTimeScale              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRewire                 ( Abc_Frame_t * pAbc, int argc, char ** argv );

//static int Abc_CommandFpga                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
//static int Abc_CommandFpgaFast               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandIf                     ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandIfif                   ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandDsdSave                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDsdLoad                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDsdFree                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDsdPs                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDsdMatch               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDsdMerge               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDsdFilter              ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandScut                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandInit                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandZero                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandUndc                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandOneHot                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPipe                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSeq                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandUnseq                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandRetime                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDRetime                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFlowRetime             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCRetime                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSeqFpga                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSeqMap                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSeqSweep               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSeqSweep2              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestSeqSweep           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestScorr              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandLcorr                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSeqCleanup             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCycle                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandXsim                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSim                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSim3                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDarPhase               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSynch                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandClockGate              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandExtWin                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandInsWin                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSymFun                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandATMap                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPermute                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandUnpermute              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCubeEnum               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPathEnum               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFunEnum                ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandCec                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDCec                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDSec                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSat                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDSat                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandXSat                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSatoko                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Satoko             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Sat3               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Kissat             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPSat                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandProve                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandIProve                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDebug                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandEco                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBmc                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBmc2                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBmc3                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBmcInter               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandIndcut                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandEnlarge                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTempor                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandInduction              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandConstr                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandUnfold                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFold                   ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandUnfold2                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandFold2                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBm                     ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBm2                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandSaucy                  ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTestCex                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandPdr                    ( Abc_Frame_t * pAbc, int argc, char ** argv );
#ifdef ABC_USE_CUDD
static int Abc_CommandReconcile              ( Abc_Frame_t * pAbc, int argc, char ** argv );
#endif
static int Abc_CommandCexSave                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCexLoad                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCexCut                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandCexMerge               ( Abc_Frame_t * pAbc, int argc, char ** argv );
//static int Abc_CommandCexMin                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandDualRail               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandBlockPo                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandIso                    ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandTraceStart             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandTraceCheck             ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandAbcSave                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbcLoad                ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandAbc9Get                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Put                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9MoveNames          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Save               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Save2              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SaveAig            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Load               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Load2              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9LoadAig            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Read               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ReadBlif           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ReadCBlif          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ReadStg            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ReadVer            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9WriteVer           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Write              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9WriteLut           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Ps                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9PFan               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Pms                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9PSig               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Status             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9MuxProfile         ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9MuxPos             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9MuxStr             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9MuxDec             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9PrintTruth         ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Unate              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Rex2Gia            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9RexWalk            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Show               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SetRegNum          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Strash             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Topand             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Add1Hot            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Cof                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Cofs               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Trim               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Dfs                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Sim                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Sim2               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Sim3               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9MLGen              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9MLTest             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Iwls21Test         ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ReadSim            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9WriteSim           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9PrintSim           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenSim             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SimRsb             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Resim              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SpecI              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Equiv              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Equiv2             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Equiv3             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Semi               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Times              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Frames             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Retime             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Enable             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Resyn3             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Resyn3rs           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Compress3rs        ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Dc2                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Dsd                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Bidec              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Shrink             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Fx                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Extract            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Balance            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9BalanceLut         ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Resub              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Reshape            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Syn2               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Syn3               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Syn4               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Synch2             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9False              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Miter              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Miter2             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Append             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Scl                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Lcorr              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Scorr              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Choice             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Sat                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SatEnum            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9AdvGenSim             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Fraig              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9CFraig             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Srm                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Srm2               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Filter             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Reduce             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9EquivMark          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9EquivFilter        ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Cec                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ICec               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Verify             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Sweep              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Force              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Embed              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Sopb               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Dsdb               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Flow               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Flow2              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Flow3              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9If                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Iff                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Iiff               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9If2                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Sif                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Jf                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Kf                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Lf                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Mf                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Nf                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Of                 ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Simap              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Exmap              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SymFun             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Pack               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Edge               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SatLut             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9LNetRead           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9LNetSim            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9LNetEval           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9LNetOpt            ( Abc_Frame_t * pAbc, int argc, char ** argv );
//#ifndef _WIN32
static int Abc_CommandAbc9Ttopt              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Transduction       ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9TranStoch          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Rrr                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Rewire             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9DecGraph           ( Abc_Frame_t * pAbc, int argc, char ** argv );
//#endif
static int Abc_CommandAbc9LNetMap            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Unmap              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Struct             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Trace              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Speedup            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Era                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Dch                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Rpm                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9BackReach          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Posplit            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Permute            ( Abc_Frame_t * pAbc, int argc, char ** argv );
#ifdef ABC_USE_CUDD
static int Abc_CommandAbc9ReachM             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ReachP             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ReachN             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ReachY             ( Abc_Frame_t * pAbc, int argc, char ** argv );
#endif
static int Abc_CommandAbc9Undo               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Mesh               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Iso                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9IsoNpn             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9IsoSt              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Store              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Compare            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9RevEng             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Uif                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9CexInfo            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Cycle              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Cone               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Slice              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9PoPart             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GroupProve         ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9MultiProve         ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SplitProve         ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SProve             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SProve2            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SplitSat           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Bmc                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SBmc               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ChainBmc           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9BCore              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ICheck             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SatTest            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9FFTest             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Qbf                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9QVar               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenQbf             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenLutCas          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9HomoQbf            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SatFx              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SatClp             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Inse               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Maxi               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Bmci               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9PoXsim             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Demiter            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Fadds              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ATree              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Polyn              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Acec               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Anorm              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Decla              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Esop               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Exorcism           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Mfs                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Mfsd               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9DeepSyn            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9RandSyn            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9SatSyn             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9StochSyn           ( Abc_Frame_t * pAbc, int argc, char ** argv );
//static int Abc_CommandAbc9PoPart2            ( Abc_Frame_t * pAbc, int argc, char ** argv );
//static int Abc_CommandAbc9CexCut             ( Abc_Frame_t * pAbc, int argc, char ** argv );
//static int Abc_CommandAbc9CexMerge           ( Abc_Frame_t * pAbc, int argc, char ** argv );
//static int Abc_CommandAbc9CexMin             ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandAbc9AbsCreate          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9AbsDerive          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9AbsRefine          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GlaDerive          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GlaRefine          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GlaShrink          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Gla                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Vta                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Vta2Gla            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Gla2Vta            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Fla2Gla            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Gla2Fla            ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandAbc9Gen                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Cfs                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9ProdAdd            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9AddFlop            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Init1              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9BMiter             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenHie             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9PutOnTop           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9BRecover           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9StrEco             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenCex             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Odc                ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenRel             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenMux             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenComp            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenSorter          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenNeuron          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenAdder           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9GenPrefix          ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Window             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9FunAbs             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9DsdInfo            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9FunTrace           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9MulFind            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9MulFind3           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9BsFind             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9AndCare            ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Cuts               ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Divide             ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Pipeline           ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Unpipeline         ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9Regio              ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandAbc9Test               ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandAbc9eSLIM              ( Abc_Frame_t * pAbc, int argc, char ** argv );
static int Abc_CommandAbc9elSLIM             ( Abc_Frame_t * pAbc, int argc, char ** argv );

static int Abc_CommandAbc9CatBtor            ( Abc_Frame_t * pAbc, int argc, char ** argv );

extern int Abc_CommandAbcLivenessToSafety    ( Abc_Frame_t * pAbc, int argc, char ** argv );
extern int Abc_CommandAbcLivenessToSafetySim ( Abc_Frame_t * pAbc, int argc, char ** argv );
extern int Abc_CommandAbcLivenessToSafetyWithLTL( Abc_Frame_t * pAbc, int argc, char ** argv );
extern int Abc_CommandCS_kLiveness           ( Abc_Frame_t * pAbc, int argc, char ** argv );
extern int Abc_CommandNChooseK               ( Abc_Frame_t * pAbc, int argc, char ** argv );

extern Aig_Man_t * Abc_NtkToDar( Abc_Ntk_t * pNtk, int fExors, int fRegisters );
extern Abc_Ntk_t * Abc_NtkFromAigPhase( Aig_Man_t * pMan );

extern Vec_Ptr_t * Abc_NtkCollectCiNames( Abc_Ntk_t * pNtk );
extern Vec_Ptr_t * Abc_NtkCollectCoNames( Abc_Ntk_t * pNtk );

extern void Extra_BitMatrixTransposeP( Vec_Wrd_t * vSimsIn, int nWordsIn, Vec_Wrd_t * vSimsOut, int nWordsOut );

typedef struct Wlc_Ntk_t_    Wlc_Ntk_t;
typedef struct Wlc_BstPar_t_ Wlc_BstPar_t;
extern Gia_Man_t * Wlc_NtkBitBlast( Wlc_Ntk_t * p, Wlc_BstPar_t * pPars );
extern int Cec_GiaProveTest( Gia_Man_t * p, int nProcs, int nTimeOut, int nTimeOut2, int nTimeOut3, int fUseUif, Wlc_Ntk_t * pWlc, int fVerbose, int fVeryVerbose, int fSilent, char * pReplayFile, char * pUfarArgs );
extern int Cec_GiaReplayReadParams( char * pFileName, int * pnProcs, int * pnTimeOut, int * pnTimeOut2, int * pnTimeOut3, int * pfUseUif );
extern int Cec_GiaReplayTest( Gia_Man_t * p, Wlc_Ntk_t * pWlc, char * pFileName, int fVerbose, int fVeryVerbose, int fSilent );

////////////////////////////////////////////////////////////////////////
///                     FUNCTION DEFINITIONS                         ///
////////////////////////////////////////////////////////////////////////

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
void Abc_FrameReplaceCex( Abc_Frame_t * pAbc, Abc_Cex_t ** ppCex )
{
    // update CEX
    ABC_FREE( pAbc->pCex );
    pAbc->pCex = *ppCex;
    *ppCex = NULL;
    // remove CEX vector
    if ( pAbc->vCexVec )
    {
        Vec_PtrFreeFree( pAbc->vCexVec );
        pAbc->vCexVec = NULL;
    }
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
void Abc_FrameReplaceCexVec( Abc_Frame_t * pAbc, Vec_Ptr_t ** pvCexVec )
{
    // update CEX vector
    if ( pAbc->vCexVec )
        Vec_PtrFreeFree( pAbc->vCexVec );
    pAbc->vCexVec = *pvCexVec;
    *pvCexVec = NULL;
    // remove CEX
    ABC_FREE( pAbc->pCex );
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
void Abc_FrameReplacePoEquivs( Abc_Frame_t * pAbc, Vec_Ptr_t ** pvPoEquivs )
{
    if ( pAbc->vPoEquivs )
        Vec_VecFree( (Vec_Vec_t *)pAbc->vPoEquivs );
    pAbc->vPoEquivs = *pvPoEquivs;
    *pvPoEquivs = NULL;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
void Abc_FrameReplacePoStatuses( Abc_Frame_t * pAbc, Vec_Int_t ** pvStatuses )
{
    if ( pAbc->vStatuses )
        Vec_IntFree( pAbc->vStatuses );
    pAbc->vStatuses = *pvStatuses;
    *pvStatuses = NULL;
}

/**Function*************************************************************

  Synopsis    [Derives array of statuses from the array of CEXes.]

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
Vec_Int_t * Abc_FrameDeriveStatusArray( Vec_Ptr_t * vCexes )
{
    Vec_Int_t * vStatuses;
    Abc_Cex_t * pCex;
    int i;
    if ( vCexes == NULL )
        return NULL;
    vStatuses = Vec_IntAlloc( Vec_PtrSize(vCexes) );
    Vec_IntFill( vStatuses, Vec_PtrSize(vCexes), -1 ); // assume UNDEC
    Vec_PtrForEachEntry( Abc_Cex_t *, vCexes, pCex, i )
        if ( pCex != NULL )
            Vec_IntWriteEntry( vStatuses, i, 0 ); // set this output as SAT
    return vStatuses;
}
Vec_Int_t * Abc_FrameDeriveStatusArray2( Vec_Ptr_t * vCexes )
{
    Vec_Int_t * vStatuses;
    Abc_Cex_t * pCex;
    int i;
    if ( vCexes == NULL )
        return NULL;
    vStatuses = Vec_IntAlloc( Vec_PtrSize(vCexes) );
    Vec_IntFill( vStatuses, Vec_PtrSize(vCexes), -1 ); // assume UNDEC
    Vec_PtrForEachEntry( Abc_Cex_t *, vCexes, pCex, i )
        if ( pCex == (Abc_Cex_t *)(ABC_PTRINT_T)1 )
        {
            Vec_IntWriteEntry( vStatuses, i, 1 ); // set this output as UNSAT
            Vec_PtrWriteEntry( vCexes, i, NULL );
        }
        else if ( pCex != NULL )
            Vec_IntWriteEntry( vStatuses, i, 0 ); // set this output as SAT
    return vStatuses;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
void Abc_FrameClearDesign()
{
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
void Abc_FrameUpdateGia( Abc_Frame_t * pAbc, Gia_Man_t * pNew )
{
    if ( pNew == NULL )
    {
        Abc_Print( -1, "Abc_FrameUpdateGia(): Transformation has failed.\n" );
        return;
    }
    if ( Gia_ManPoNum(pNew) == 0 )
        Abc_Print( 0, "The current GIA has no primary outputs. Some commands may not work correctly.\n" );
    if ( pNew == pAbc->pGia )
        return;
    // transfer names
    if (!pNew->vNamesIn && pAbc->pGia && pAbc->pGia->vNamesIn && Gia_ManCiNum(pNew) == Vec_PtrSize(pAbc->pGia->vNamesIn))
    {
        pNew->vNamesIn = pAbc->pGia->vNamesIn;
        pAbc->pGia->vNamesIn = NULL;
    }
    if (!pNew->vNamesOut && pAbc->pGia && pAbc->pGia->vNamesOut && Gia_ManCoNum(pNew) == Vec_PtrSize(pAbc->pGia->vNamesOut))
    {
        pNew->vNamesOut = pAbc->pGia->vNamesOut;
        pAbc->pGia->vNamesOut = NULL;
    }
    if (!pNew->vNamesNode && pAbc->pGia && pAbc->pGia->vNamesNode && Gia_ManObjNum(pNew) == Vec_PtrSize(pAbc->pGia->vNamesNode))
    {
        pNew->vNamesNode = pAbc->pGia->vNamesNode;
        pAbc->pGia->vNamesNode = NULL;
    }
    // update
    if ( pAbc->pGia2 )
        Gia_ManStop( pAbc->pGia2 );
    pAbc->pGia2 = pAbc->pGia;
    pAbc->pGia  = pNew;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
Gia_Man_t * Abc_FrameGetGia( Abc_Frame_t * pAbc )
{
    Gia_Man_t * pGia;
    if ( pAbc->pGia2 )
        Gia_ManStop( pAbc->pGia2 );
    pAbc->pGia2 = NULL;
    pGia = pAbc->pGia;
    pAbc->pGia = NULL;
    return pGia;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
void Abc_Init( Abc_Frame_t * pAbc )
{
    Cmd_CommandAdd( pAbc, "Printing",     "ps",            Abc_CommandPrintStats,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_stats",   Abc_CommandPrintStats,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_exdc",    Abc_CommandPrintExdc,        0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_io",      Abc_CommandPrintIo,          0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_latch",   Abc_CommandPrintLatch,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "pfan",          Abc_CommandPrintFanio,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_fanio",   Abc_CommandPrintFanio,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_mffc",    Abc_CommandPrintMffc,        0 );
    Cmd_CommandAdd( pAbc, "Printing",     "pf",            Abc_CommandPrintFactor,      0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_factor",  Abc_CommandPrintFactor,      0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_level",   Abc_CommandPrintLevel,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "psu",           Abc_CommandPrintSupport,     0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_supp",    Abc_CommandPrintSupport,     0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_npn",     Abc_CommandPrintNpn,         0 );
#ifdef ABC_USE_CUDD
    Cmd_CommandAdd( pAbc, "Printing",     "print_mint",    Abc_CommandPrintMint,        0 );
#endif
    Cmd_CommandAdd( pAbc, "Printing",     "print_symm",    Abc_CommandPrintSymms,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_unate",   Abc_CommandPrintUnate,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_auto",    Abc_CommandPrintAuto,        0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_kmap",    Abc_CommandPrintKMap,        0 );
    Cmd_CommandAdd( pAbc, "Printing",     "pg",            Abc_CommandPrintGates,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_gates",   Abc_CommandPrintGates,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_sharing", Abc_CommandPrintSharing,     0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_xcut",    Abc_CommandPrintXCut,        0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_dsd",     Abc_CommandPrintDsd,         0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_cone",    Abc_CommandPrintCone,        0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_miter",   Abc_CommandPrintMiter,       0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_status",  Abc_CommandPrintStatus,      0 );
    Cmd_CommandAdd( pAbc, "Printing",     "print_delay",   Abc_CommandPrintDelay,       0 );

    Cmd_CommandAdd( pAbc, "Printing",     "show",          Abc_CommandShow,             0 );
    Cmd_CommandAdd( pAbc, "Printing",     "show_bdd",      Abc_CommandShowBdd,          0 );
    Cmd_CommandAdd( pAbc, "Printing",     "show_cut",      Abc_CommandShowCut,          0 );

    Cmd_CommandAdd( pAbc, "Synthesis",    "clp",           Abc_CommandCollapse,         1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "collapse",      Abc_CommandCollapse,         1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "satclp",        Abc_CommandSatClp,           1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "st",            Abc_CommandStrash,           1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "strash",        Abc_CommandStrash,           1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "b",             Abc_CommandBalance,          1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "balance",       Abc_CommandBalance,          1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "mux_struct",    Abc_CommandMuxStruct,        1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "multi",         Abc_CommandMulti,            1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "renode",        Abc_CommandRenode,           1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "cleanup",       Abc_CommandCleanup,          1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "sweep",         Abc_CommandSweep,            1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "fx",            Abc_CommandFastExtract,      1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "fxch",          Abc_CommandFxch,             1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "eliminate",     Abc_CommandEliminate,        1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "dsd",           Abc_CommandDisjoint,         1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "sparsify",      Abc_CommandSparsify,         1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "lutpack",       Abc_CommandLutpack,          1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "lutmin",        Abc_CommandLutmin,           1 );
//    Cmd_CommandAdd( pAbc, "Synthesis",    "imfs",          Abc_CommandImfs,             1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "mfs",           Abc_CommandMfs,              1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "mfs2",          Abc_CommandMfs2,             1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "mfs3",          Abc_CommandMfs3,             1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "mfse",          Abc_CommandMfse,              1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "logicpush",     Abc_CommandLogicPush,        1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "trace",         Abc_CommandTrace,            0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "glitch",        Abc_CommandGlitch,           0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "speedup",       Abc_CommandSpeedup,          1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "powerdown",     Abc_CommandPowerdown,        1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "addbuffs",      Abc_CommandAddBuffs,         1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "merge",         Abc_CommandMerge,            1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "testdec",       Abc_CommandTestDec,          0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "testnpn",       Abc_CommandTestNpn,          0 );
    Cmd_CommandAdd( pAbc, "LogiCS",       "testrpo",       Abc_CommandTestRPO,          0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "testtruth",     Abc_CommandTestTruth,        0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "testsupp",      Abc_CommandTestSupp,         0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "testrand",      Abc_CommandTestRand,         0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "runsat",        Abc_CommandRunSat,           0 );    
    Cmd_CommandAdd( pAbc, "Synthesis",    "runeco",        Abc_CommandRunEco,           0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "rungen",        Abc_CommandRunGen,           0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "runscript",     Abc_CommandRunScript,        0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "xec",           Abc_CommandRunTest,          0 );

    Cmd_CommandAdd( pAbc, "Synthesis",    "rewrite",       Abc_CommandRewrite,          1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "refactor",      Abc_CommandRefactor,         1 );
//    Cmd_CommandAdd( pAbc, "Synthesis",    "restructure",   Abc_CommandRestructure,      1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "resub",         Abc_CommandResubstitute,     1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "resub_unate",   Abc_CommandResubUnate,       1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "resub_core",    Abc_CommandResubCore,        1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "resub_check",   Abc_CommandResubCheck,       0 );
//    Cmd_CommandAdd( pAbc, "Synthesis",    "rr",            Abc_CommandRr,               1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "cascade",       Abc_CommandCascade,          1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "lutcasdec",     Abc_CommandLutCasDec,        1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "lutcas",        Abc_CommandLutCas,           1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "bseval",        Abc_CommandBsEval,           0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "extract",       Abc_CommandExtract,          1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "varmin",        Abc_CommandVarMin,           0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "faultclasses",  Abc_CommandFaultClasses,     0 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "exact",         Abc_CommandExact,            1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "orchestrate",  Abc_CommandOrchestrate,       1 );
    Cmd_CommandAdd( pAbc, "Synthesis",    "aigaug",       Abc_CommandAIGAugmentation,   1 );

    Cmd_CommandAdd( pAbc, "Exact synthesis", "bms_start",  Abc_CommandBmsStart,         0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "bms_stop",   Abc_CommandBmsStop,          0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "bms_ps",     Abc_CommandBmsPs,            0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "majexact",   Abc_CommandMajExact,         0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "twoexact",   Abc_CommandTwoExact,         0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "lutexact",   Abc_CommandLutExact,         0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "andexact",   Abc_CommandAndExact,         0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "allexact",   Abc_CommandAllExact,         0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "topoexact",  Abc_CommandTopoExact,        0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "netexact",   Abc_CommandNetExact,         0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "testexact",  Abc_CommandTestExact,        0 );
    Cmd_CommandAdd( pAbc, "Exact synthesis", "majgen",     Abc_CommandMajGen,           0 );

    Cmd_CommandAdd( pAbc, "Various",      "logic",         Abc_CommandLogic,            1 );
    Cmd_CommandAdd( pAbc, "Various",      "comb",          Abc_CommandComb,             1 );
    Cmd_CommandAdd( pAbc, "Various",      "miter",         Abc_CommandMiter,            1 );
    Cmd_CommandAdd( pAbc, "Various",      "miter2",        Abc_CommandMiter2,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "demiter",       Abc_CommandDemiter,          1 );
    Cmd_CommandAdd( pAbc, "Various",      "orpos",         Abc_CommandOrPos,            1 );
    Cmd_CommandAdd( pAbc, "Various",      "andpos",        Abc_CommandAndPos,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "zeropo",        Abc_CommandZeroPo,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "swappos",       Abc_CommandSwapPos,          1 );
    Cmd_CommandAdd( pAbc, "Various",      "removepo",      Abc_CommandRemovePo,         1 );
    Cmd_CommandAdd( pAbc, "Various",      "dropsat",       Abc_CommandDropSat,          1 );
    Cmd_CommandAdd( pAbc, "Various",      "addpi",         Abc_CommandAddPi,            1 );
    Cmd_CommandAdd( pAbc, "Various",      "addflop",       Abc_CommandAddFlop,          1 );
    Cmd_CommandAdd( pAbc, "Various",      "append",        Abc_CommandAppend,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "putontop",      Abc_CommandPutOnTop,         1 );
    Cmd_CommandAdd( pAbc, "Various",      "frames",        Abc_CommandFrames,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "dframes",       Abc_CommandDFrames,          1 );
    Cmd_CommandAdd( pAbc, "Various",      "sop",           Abc_CommandSop,              0 );
    Cmd_CommandAdd( pAbc, "Various",      "bdd",           Abc_CommandBdd,              0 );
    Cmd_CommandAdd( pAbc, "Various",      "aig",           Abc_CommandAig,              0 );
    Cmd_CommandAdd( pAbc, "Various",      "reorder",       Abc_CommandReorder,          0 );
    Cmd_CommandAdd( pAbc, "Various",      "bidec",         Abc_CommandBidec,            1 );
    Cmd_CommandAdd( pAbc, "Various",      "order",         Abc_CommandOrder,            0 );
    Cmd_CommandAdd( pAbc, "Various",      "muxes",         Abc_CommandMuxes,            1 );
    Cmd_CommandAdd( pAbc, "Various",      "cubes",         Abc_CommandCubes,            1 );
    Cmd_CommandAdd( pAbc, "Various",      "expand",        Abc_CommandExpand,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "splitsop",      Abc_CommandSplitSop,         1 );
    Cmd_CommandAdd( pAbc, "Various",      "ext_seq_dcs",   Abc_CommandExtSeqDcs,        0 );
    Cmd_CommandAdd( pAbc, "Various",      "reach",         Abc_CommandReach,            0 );
    Cmd_CommandAdd( pAbc, "Various",      "cone",          Abc_CommandCone,             1 );
    Cmd_CommandAdd( pAbc, "Various",      "node",          Abc_CommandNode,             1 );
    Cmd_CommandAdd( pAbc, "Various",      "range",         Abc_CommandRange,            1 );
    Cmd_CommandAdd( pAbc, "Various",      "cof",           Abc_CommandCof,              1 );
    Cmd_CommandAdd( pAbc, "Various",      "topmost",       Abc_CommandTopmost,          1 );
    Cmd_CommandAdd( pAbc, "Various",      "bottommost",    Abc_CommandBottommost,       1 );
    Cmd_CommandAdd( pAbc, "Various",      "topand",        Abc_CommandTopAnd,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "trim",          Abc_CommandTrim,             1 );
    Cmd_CommandAdd( pAbc, "Various",      "short_names",   Abc_CommandShortNames,       0 );
    Cmd_CommandAdd( pAbc, "Various",      "move_names",    Abc_CommandMoveNames,        0 );
    Cmd_CommandAdd( pAbc, "Various",      "exdc_free",     Abc_CommandExdcFree,         1 );
    Cmd_CommandAdd( pAbc, "Various",      "exdc_get",      Abc_CommandExdcGet,          1 );
    Cmd_CommandAdd( pAbc, "Various",      "exdc_set",      Abc_CommandExdcSet,          1 );
    Cmd_CommandAdd( pAbc, "Various",      "care_set",      Abc_CommandCareSet,          1 );
    Cmd_CommandAdd( pAbc, "Various",      "cut",           Abc_CommandCut,              0 );
    Cmd_CommandAdd( pAbc, "Various",      "espresso",      Abc_CommandEspresso,         1 );
    Cmd_CommandAdd( pAbc, "Various",      "gen",           Abc_CommandGen,              0 );
    Cmd_CommandAdd( pAbc, "Various",      "gentf",         Abc_CommandGenTF,            0 );
    Cmd_CommandAdd( pAbc, "Various",      "genat",         Abc_CommandGenAT,            0 );
    Cmd_CommandAdd( pAbc, "Various",      "genpop",        Abc_CommandGenPop,           0 );
    Cmd_CommandAdd( pAbc, "Various",      "genfsm",        Abc_CommandGenFsm,           0 );
    Cmd_CommandAdd( pAbc, "Various",      "cover",         Abc_CommandCover,            1 );
    Cmd_CommandAdd( pAbc, "Various",      "double",        Abc_CommandDouble,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "inter",         Abc_CommandInter,            1 );
    Cmd_CommandAdd( pAbc, "Various",      "bb2wb",         Abc_CommandBb2Wb,            0 );
    Cmd_CommandAdd( pAbc, "Various",      "outdec",        Abc_CommandOutdec,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "nodedup",       Abc_CommandNodeDup,          1 );
    Cmd_CommandAdd( pAbc, "Various",      "wrap",          Abc_CommandWrap,             0 );
    Cmd_CommandAdd( pAbc, "Various",      "testcolor",     Abc_CommandTestColor,        0 );
    Cmd_CommandAdd( pAbc, "Various",      "test",          Abc_CommandTest,             0 );
//    Cmd_CommandAdd( pAbc, "Various",      "qbf_solve",     Abc_CommandTest,               0 );

    Cmd_CommandAdd( pAbc, "Various",      "qvar",          Abc_CommandQuaVar,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "qrel",          Abc_CommandQuaRel,           1 );
    Cmd_CommandAdd( pAbc, "Various",      "qreach",        Abc_CommandQuaReach,         1 );
    Cmd_CommandAdd( pAbc, "Various",      "senseinput",    Abc_CommandSenseInput,       1 );
    Cmd_CommandAdd( pAbc, "Various",      "npnload",       Abc_CommandNpnLoad,          0 );
    Cmd_CommandAdd( pAbc, "Various",      "npnsave",       Abc_CommandNpnSave,          0 );

    Cmd_CommandAdd( pAbc, "Various",      "send_aig",      Abc_CommandSendAig,          0 );
    Cmd_CommandAdd( pAbc, "Various",      "send_status",   Abc_CommandSendStatus,       0 );

    Cmd_CommandAdd( pAbc, "Various",      "backup",        Abc_CommandBackup,           0 );
    Cmd_CommandAdd( pAbc, "Various",      "restore",       Abc_CommandRestore,          0 );

    Cmd_CommandAdd( pAbc, "Various",      "minisat",       Abc_CommandMinisat,          0 );
    Cmd_CommandAdd( pAbc, "Various",      "minisimp",      Abc_CommandMinisimp,         0 );

    Cmd_CommandAdd( pAbc, "New AIG",      "istrash",       Abc_CommandIStrash,          1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "icut",          Abc_CommandICut,             0 );
    Cmd_CommandAdd( pAbc, "New AIG",      "irw",           Abc_CommandIRewrite,         1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "drw",           Abc_CommandDRewrite,         1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "drf",           Abc_CommandDRefactor,        1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "dc2",           Abc_CommandDc2,              1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "dchoice",       Abc_CommandDChoice,          1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "dch",           Abc_CommandDch,              1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "drwsat",        Abc_CommandDrwsat,           1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "irws",          Abc_CommandIRewriteSeq,      1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "iresyn",        Abc_CommandIResyn,           1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "isat",          Abc_CommandISat,             1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "ifraig",        Abc_CommandIFraig,           1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "dfraig",        Abc_CommandDFraig,           1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "csweep",        Abc_CommandCSweep,           1 );
//    Cmd_CommandAdd( pAbc, "New AIG",      "haig",          Abc_CommandHaig,             1 );
    Cmd_CommandAdd( pAbc, "New AIG",      "qbf",           Abc_CommandQbf,              0 );
    Cmd_CommandAdd( pAbc, "New AIG",      "aigsim",        Abc_CommandAigSim,           0 );

    Cmd_CommandAdd( pAbc, "Fraiging",     "fraig",         Abc_CommandFraig,            1 );
    Cmd_CommandAdd( pAbc, "Fraiging",     "fraig_trust",   Abc_CommandFraigTrust,       1 );
    Cmd_CommandAdd( pAbc, "Fraiging",     "fraig_store",   Abc_CommandFraigStore,       0 );
    Cmd_CommandAdd( pAbc, "Fraiging",     "fraig_restore", Abc_CommandFraigRestore,     1 );
    Cmd_CommandAdd( pAbc, "Fraiging",     "fraig_clean",   Abc_CommandFraigClean,       0 );
    Cmd_CommandAdd( pAbc, "Fraiging",     "fraig_sweep",   Abc_CommandFraigSweep,       1 );
    Cmd_CommandAdd( pAbc, "Fraiging",     "dress",         Abc_CommandFraigDress,       1 );
    Cmd_CommandAdd( pAbc, "Fraiging",     "dump_equiv",    Abc_CommandDumpEquiv,        0 );

    Cmd_CommandAdd( pAbc, "Choicing",     "rec_start3",    Abc_CommandRecStart3,        0 );
    Cmd_CommandAdd( pAbc, "Choicing",     "rec_stop3",     Abc_CommandRecStop3,         0 );
    Cmd_CommandAdd( pAbc, "Choicing",     "rec_ps3",       Abc_CommandRecPs3,           0 );
    Cmd_CommandAdd( pAbc, "Choicing",     "rec_add3",      Abc_CommandRecAdd3,          0 );
    Cmd_CommandAdd( pAbc, "Choicing",     "rec_dump3",     Abc_CommandRecDump3,         0 );
    Cmd_CommandAdd( pAbc, "Choicing",     "rec_merge3",    Abc_CommandRecMerge3,        0 );

    Cmd_CommandAdd( pAbc, "SC mapping",   "map",           Abc_CommandMap,              1 );
    Cmd_CommandAdd( pAbc, "SC mapping",   "amap",          Abc_CommandAmap,             1 );
    Cmd_CommandAdd( pAbc, "SC mapping",   "phase_map",     Abc_CommandPhaseMap,         1 );
    Cmd_CommandAdd( pAbc, "SC mapping",   "stochmap",      Abc_CommandStochMap,         1 );
    Cmd_CommandAdd( pAbc, "SC mapping",   "unmap",         Abc_CommandUnmap,            1 );
    Cmd_CommandAdd( pAbc, "SC mapping",   "attach",        Abc_CommandAttach,           1 );
    Cmd_CommandAdd( pAbc, "SC mapping",   "superc",        Abc_CommandSuperChoice,      1 );
    Cmd_CommandAdd( pAbc, "SC mapping",   "supercl",       Abc_CommandSuperChoiceLut,   1 );
    Cmd_CommandAdd( pAbc, "SC mapping",   "timescale",     Abc_CommandTimeScale,        0 );
    Cmd_CommandAdd( pAbc, "SC mapping",   "rewire",        Abc_CommandRewire,           1 );

//    Cmd_CommandAdd( pAbc, "FPGA mapping", "fpga",          Abc_CommandFpga,             1 );
//    Cmd_CommandAdd( pAbc, "FPGA mapping", "ffpga",         Abc_CommandFpgaFast,         1 );
    Cmd_CommandAdd( pAbc, "FPGA mapping", "if",            Abc_CommandIf,               1 );
    Cmd_CommandAdd( pAbc, "FPGA mapping", "ifif",          Abc_CommandIfif,             1 );

    Cmd_CommandAdd( pAbc, "DSD manager",  "dsd_save",      Abc_CommandDsdSave,          0 );
    Cmd_CommandAdd( pAbc, "DSD manager",  "dsd_load",      Abc_CommandDsdLoad,          0 );
    Cmd_CommandAdd( pAbc, "DSD manager",  "dsd_free",      Abc_CommandDsdFree,          0 );
    Cmd_CommandAdd( pAbc, "DSD manager",  "dsd_ps",        Abc_CommandDsdPs,            0 );
    Cmd_CommandAdd( pAbc, "DSD manager",  "dsd_match",     Abc_CommandDsdMatch,         0 );
    Cmd_CommandAdd( pAbc, "DSD manager",  "dsd_merge",     Abc_CommandDsdMerge,         0 );
    Cmd_CommandAdd( pAbc, "DSD manager",  "dsd_filter",    Abc_CommandDsdFilter,        0 );

//    Cmd_CommandAdd( pAbc, "Sequential",   "scut",          Abc_CommandScut,             0 );
    Cmd_CommandAdd( pAbc, "Sequential",   "init",          Abc_CommandInit,             1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "zero",          Abc_CommandZero,             1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "undc",          Abc_CommandUndc,             1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "onehot",        Abc_CommandOneHot,           1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "pipe",          Abc_CommandPipe,             1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "retime",        Abc_CommandRetime,           1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "dretime",       Abc_CommandDRetime,          1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "fretime",       Abc_CommandFlowRetime,       1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "cretime",       Abc_CommandCRetime,          1 );
//    Cmd_CommandAdd( pAbc, "Sequential",   "sfpga",         Abc_CommandSeqFpga,          1 );
//    Cmd_CommandAdd( pAbc, "Sequential",   "smap",          Abc_CommandSeqMap,           1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "ssweep",        Abc_CommandSeqSweep,         1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "scorr",         Abc_CommandSeqSweep2,        1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "testssw",       Abc_CommandTestSeqSweep,     0 );
    Cmd_CommandAdd( pAbc, "Sequential",   "testscorr",     Abc_CommandTestScorr,        0 );
    Cmd_CommandAdd( pAbc, "Sequential",   "lcorr",         Abc_CommandLcorr,            1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "scleanup",      Abc_CommandSeqCleanup,       1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "cycle",         Abc_CommandCycle,            1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "xsim",          Abc_CommandXsim,             0 );
    Cmd_CommandAdd( pAbc, "Sequential",   "sim",           Abc_CommandSim,              0 );
    Cmd_CommandAdd( pAbc, "Sequential",   "sim3",          Abc_CommandSim3,             0 );
    Cmd_CommandAdd( pAbc, "Sequential",   "phase",         Abc_CommandDarPhase,         1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "synch",         Abc_CommandSynch,            1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "clockgate",     Abc_CommandClockGate,        1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "extwin",        Abc_CommandExtWin,           1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "inswin",        Abc_CommandInsWin,           1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "symfun",        Abc_CommandSymFun,           0 );
    Cmd_CommandAdd( pAbc, "Sequential",   "atmap",         Abc_CommandATMap,            0 );
    Cmd_CommandAdd( pAbc, "Sequential",   "permute",       Abc_CommandPermute,          1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "unpermute",     Abc_CommandUnpermute,        1 );
    Cmd_CommandAdd( pAbc, "Sequential",   "cubeenum",      Abc_CommandCubeEnum,         0 );
    Cmd_CommandAdd( pAbc, "Sequential",   "pathenum",      Abc_CommandPathEnum,         0 );
    Cmd_CommandAdd( pAbc, "Sequential",   "funenum",       Abc_CommandFunEnum,          0 );

    Cmd_CommandAdd( pAbc, "Verification", "cec",           Abc_CommandCec,              0 );
    Cmd_CommandAdd( pAbc, "Verification", "dcec",          Abc_CommandDCec,             0 );
    Cmd_CommandAdd( pAbc, "Verification", "dsec",          Abc_CommandDSec,             0 );
    Cmd_CommandAdd( pAbc, "Verification", "dprove",        Abc_CommandDProve,           0 );
    Cmd_CommandAdd( pAbc, "Verification", "absec",         Abc_CommandAbSec,            0 );
    Cmd_CommandAdd( pAbc, "Verification", "simsec",        Abc_CommandSimSec,           0 );
    Cmd_CommandAdd( pAbc, "Verification", "match",         Abc_CommandMatch,            0 );
    Cmd_CommandAdd( pAbc, "Verification", "sat",           Abc_CommandSat,              0 );
    Cmd_CommandAdd( pAbc, "Verification", "dsat",          Abc_CommandDSat,             0 );
    Cmd_CommandAdd( pAbc, "Verification", "xsat",          Abc_CommandXSat,             0 );
    Cmd_CommandAdd( pAbc, "Verification", "satoko",        Abc_CommandSatoko,           0 );
    Cmd_CommandAdd( pAbc, "Verification", "&satoko",       Abc_CommandAbc9Satoko,       0 );
    Cmd_CommandAdd( pAbc, "Verification", "&sat3",         Abc_CommandAbc9Sat3,         0 );
    Cmd_CommandAdd( pAbc, "Verification", "&kissat",       Abc_CommandAbc9Kissat,       0 );
    Cmd_CommandAdd( pAbc, "Verification", "psat",          Abc_CommandPSat,             0 );
    Cmd_CommandAdd( pAbc, "Verification", "prove",         Abc_CommandProve,            1 );
    Cmd_CommandAdd( pAbc, "Verification", "iprove",        Abc_CommandIProve,           1 );
    Cmd_CommandAdd( pAbc, "Verification", "debug",         Abc_CommandDebug,            0 );
    Cmd_CommandAdd( pAbc, "Verification", "eco",           Abc_CommandEco,              0 );
    Cmd_CommandAdd( pAbc, "Verification", "bmc",           Abc_CommandBmc,              0 );
    Cmd_CommandAdd( pAbc, "Verification", "bmc2",          Abc_CommandBmc2,             0 );
    Cmd_CommandAdd( pAbc, "Verification", "bmc3",          Abc_CommandBmc3,             1 );
    Cmd_CommandAdd( pAbc, "Verification", "int",           Abc_CommandBmcInter,         1 );
    Cmd_CommandAdd( pAbc, "Verification", "indcut",        Abc_CommandIndcut,           0 );
    Cmd_CommandAdd( pAbc, "Verification", "enlarge",       Abc_CommandEnlarge,          1 );
    Cmd_CommandAdd( pAbc, "Verification", "tempor",        Abc_CommandTempor,           1 );
    Cmd_CommandAdd( pAbc, "Verification", "ind",           Abc_CommandInduction,        0 );
    Cmd_CommandAdd( pAbc, "Verification", "constr",        Abc_CommandConstr,           0 );
    Cmd_CommandAdd( pAbc, "Verification", "unfold",        Abc_CommandUnfold,           1 );
    Cmd_CommandAdd( pAbc, "Verification", "fold",          Abc_CommandFold,             1 );
    Cmd_CommandAdd( pAbc, "Verification", "unfold2",       Abc_CommandUnfold2,          1 );    // jlong
    Cmd_CommandAdd( pAbc, "Verification", "fold2",         Abc_CommandFold2,            1 );    // jlong
    Cmd_CommandAdd( pAbc, "Verification", "bm",            Abc_CommandBm,               1 );
    Cmd_CommandAdd( pAbc, "Verification", "bm2",           Abc_CommandBm2,              1 );
    Cmd_CommandAdd( pAbc, "Verification", "saucy3",        Abc_CommandSaucy,            1 );
    Cmd_CommandAdd( pAbc, "Verification", "testcex",       Abc_CommandTestCex,          0 );
    Cmd_CommandAdd( pAbc, "Verification", "pdr",           Abc_CommandPdr,              0 );
#ifdef ABC_USE_CUDD
    Cmd_CommandAdd( pAbc, "Verification", "reconcile",     Abc_CommandReconcile,        1 );
#endif
    Cmd_CommandAdd( pAbc, "Verification", "cexsave",       Abc_CommandCexSave,          0 );
    Cmd_CommandAdd( pAbc, "Verification", "cexload",       Abc_CommandCexLoad,          0 );
    Cmd_CommandAdd( pAbc, "Verification", "cexcut",        Abc_CommandCexCut,           0 );
    Cmd_CommandAdd( pAbc, "Verification", "cexmerge",      Abc_CommandCexMerge,         0 );
//    Cmd_CommandAdd( pAbc, "Verification", "cexmin",        Abc_CommandCexMin,           0 );
    Cmd_CommandAdd( pAbc, "Verification", "dualrail",      Abc_CommandDualRail,         1 );
    Cmd_CommandAdd( pAbc, "Verification", "blockpo",       Abc_CommandBlockPo,          1 );
    Cmd_CommandAdd( pAbc, "Verification", "iso",           Abc_CommandIso,              1 );

    Cmd_CommandAdd( pAbc, "Various",      "save",          Abc_CommandAbcSave,          0 );
    Cmd_CommandAdd( pAbc, "Various",      "load",          Abc_CommandAbcLoad,          0 );

    Cmd_CommandAdd( pAbc, "ABC9",         "&get",          Abc_CommandAbc9Get,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&put",          Abc_CommandAbc9Put,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&move_names",   Abc_CommandAbc9MoveNames,    0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&save",         Abc_CommandAbc9Save,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&save2",        Abc_CommandAbc9Save2,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&saveaig",      Abc_CommandAbc9SaveAig,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&load",         Abc_CommandAbc9Load,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&load2",        Abc_CommandAbc9Load2,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&loadaig",      Abc_CommandAbc9LoadAig,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&r",            Abc_CommandAbc9Read,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&read",         Abc_CommandAbc9Read,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&read_blif",    Abc_CommandAbc9ReadBlif,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&read_cblif",   Abc_CommandAbc9ReadCBlif,    0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&read_stg",     Abc_CommandAbc9ReadStg,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&read_ver",     Abc_CommandAbc9ReadVer,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&write_ver",    Abc_CommandAbc9WriteVer,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&w",            Abc_CommandAbc9Write,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&write",        Abc_CommandAbc9Write,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&wlut",         Abc_CommandAbc9WriteLut,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&ps",           Abc_CommandAbc9Ps,           0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&pfan",         Abc_CommandAbc9PFan,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&pms",          Abc_CommandAbc9Pms,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&psig",         Abc_CommandAbc9PSig,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&status",       Abc_CommandAbc9Status,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&profile",      Abc_CommandAbc9MuxProfile,   0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&muxpos",       Abc_CommandAbc9MuxPos,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&muxstr",       Abc_CommandAbc9MuxStr,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&muxdec",       Abc_CommandAbc9MuxDec,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&print_truth",  Abc_CommandAbc9PrintTruth,   0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&unate",        Abc_CommandAbc9Unate,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&rex2gia",      Abc_CommandAbc9Rex2Gia,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&rexwalk",      Abc_CommandAbc9RexWalk,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&show",         Abc_CommandAbc9Show,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&setregnum",    Abc_CommandAbc9SetRegNum,    0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&st",           Abc_CommandAbc9Strash,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&topand",       Abc_CommandAbc9Topand,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&add1hot",      Abc_CommandAbc9Add1Hot,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&cof",          Abc_CommandAbc9Cof,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&cofs",         Abc_CommandAbc9Cofs,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&trim",         Abc_CommandAbc9Trim,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&dfs",          Abc_CommandAbc9Dfs,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sim",          Abc_CommandAbc9Sim,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sim2",         Abc_CommandAbc9Sim2,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sim3",         Abc_CommandAbc9Sim3,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&mlgen",        Abc_CommandAbc9MLGen,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&mltest",       Abc_CommandAbc9MLTest,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&iwls21test",   Abc_CommandAbc9Iwls21Test,   0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sim_read",     Abc_CommandAbc9ReadSim,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sim_write",    Abc_CommandAbc9WriteSim,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sim_print",    Abc_CommandAbc9PrintSim,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sim_gen",      Abc_CommandAbc9GenSim,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&simrsb",       Abc_CommandAbc9SimRsb,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&resim",        Abc_CommandAbc9Resim,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&speci",        Abc_CommandAbc9SpecI,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&equiv",        Abc_CommandAbc9Equiv,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&equiv2",       Abc_CommandAbc9Equiv2,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&equiv3",       Abc_CommandAbc9Equiv3,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&semi",         Abc_CommandAbc9Semi,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&times",        Abc_CommandAbc9Times,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&frames",       Abc_CommandAbc9Frames,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&retime",       Abc_CommandAbc9Retime,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&enable",       Abc_CommandAbc9Enable,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&resyn3",       Abc_CommandAbc9Resyn3,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&resyn3rs",     Abc_CommandAbc9Resyn3rs,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&compress3rs",  Abc_CommandAbc9Compress3rs,  0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&dc2",          Abc_CommandAbc9Dc2,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&dsd",          Abc_CommandAbc9Dsd,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&bidec",        Abc_CommandAbc9Bidec,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&shrink",       Abc_CommandAbc9Shrink,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&fx",           Abc_CommandAbc9Fx,           0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&extract",      Abc_CommandAbc9Extract,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&b",            Abc_CommandAbc9Balance,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&blut",         Abc_CommandAbc9BalanceLut,   0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&resub",        Abc_CommandAbc9Resub,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&reshape",      Abc_CommandAbc9Reshape,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&syn2",         Abc_CommandAbc9Syn2,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&syn3",         Abc_CommandAbc9Syn3,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&syn4",         Abc_CommandAbc9Syn4,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&synch2",       Abc_CommandAbc9Synch2,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&false",        Abc_CommandAbc9False,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&miter",        Abc_CommandAbc9Miter,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&miter2",       Abc_CommandAbc9Miter2,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&append",       Abc_CommandAbc9Append,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&scl",          Abc_CommandAbc9Scl,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&lcorr",        Abc_CommandAbc9Lcorr,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&scorr",        Abc_CommandAbc9Scorr,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&choice",       Abc_CommandAbc9Choice,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sat",          Abc_CommandAbc9Sat,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&satenum",      Abc_CommandAbc9SatEnum,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&adv_sim_gen",      Abc_CommandAbc9AdvGenSim,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&fraig",        Abc_CommandAbc9Fraig,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&cfraig",       Abc_CommandAbc9CFraig,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&srm",          Abc_CommandAbc9Srm,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&srm2",         Abc_CommandAbc9Srm2,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&filter",       Abc_CommandAbc9Filter,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&reduce",       Abc_CommandAbc9Reduce,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&equiv_mark",   Abc_CommandAbc9EquivMark,    0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&equiv_filter", Abc_CommandAbc9EquivFilter,  0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&cec",          Abc_CommandAbc9Cec,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&icec",         Abc_CommandAbc9ICec,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&verify",       Abc_CommandAbc9Verify,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sweep",        Abc_CommandAbc9Sweep,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&force",        Abc_CommandAbc9Force,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&embed",        Abc_CommandAbc9Embed,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sopb",         Abc_CommandAbc9Sopb,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&dsdb",         Abc_CommandAbc9Dsdb,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&flow",         Abc_CommandAbc9Flow,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&flow2",        Abc_CommandAbc9Flow2,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&flow3",        Abc_CommandAbc9Flow3,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&if",           Abc_CommandAbc9If,           0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&iff",          Abc_CommandAbc9Iff,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&iiff",         Abc_CommandAbc9Iiff,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&if2",          Abc_CommandAbc9If2,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sif",          Abc_CommandAbc9Sif,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&jf",           Abc_CommandAbc9Jf,           0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&kf",           Abc_CommandAbc9Kf,           0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&lf",           Abc_CommandAbc9Lf,           0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&mf",           Abc_CommandAbc9Mf,           0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&nf",           Abc_CommandAbc9Nf,           0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&of",           Abc_CommandAbc9Of,           0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&simap",        Abc_CommandAbc9Simap,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&exmap",        Abc_CommandAbc9Exmap,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&symfun",       Abc_CommandAbc9SymFun,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&pack",         Abc_CommandAbc9Pack,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&edge",         Abc_CommandAbc9Edge,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&satlut",       Abc_CommandAbc9SatLut,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&lnetread",     Abc_CommandAbc9LNetRead,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&lnetsim",      Abc_CommandAbc9LNetSim,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&lneteval",     Abc_CommandAbc9LNetEval,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&lnetopt",      Abc_CommandAbc9LNetOpt,      0 );
//#ifndef _WIN32
    Cmd_CommandAdd( pAbc, "ABC9",         "&ttopt",        Abc_CommandAbc9Ttopt,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&transduction", Abc_CommandAbc9Transduction, 0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&transtoch"   , Abc_CommandAbc9TranStoch,    0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&rrr",          Abc_CommandAbc9Rrr,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&rewire"      , Abc_CommandAbc9Rewire,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&dg"          , Abc_CommandAbc9DecGraph,     0 );
//#endif
    Cmd_CommandAdd( pAbc, "ABC9",         "&lnetmap",      Abc_CommandAbc9LNetMap,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&unmap",        Abc_CommandAbc9Unmap,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&struct",       Abc_CommandAbc9Struct,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&trace",        Abc_CommandAbc9Trace,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&speedup",      Abc_CommandAbc9Speedup,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&era",          Abc_CommandAbc9Era,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&dch",          Abc_CommandAbc9Dch,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&rpm",          Abc_CommandAbc9Rpm,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&back_reach",   Abc_CommandAbc9BackReach,    0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&posplit",      Abc_CommandAbc9Posplit,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&permute",      Abc_CommandAbc9Permute,      0 );
#ifdef ABC_USE_CUDD
    Cmd_CommandAdd( pAbc, "ABC9",         "&reachm",       Abc_CommandAbc9ReachM,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&reachp",       Abc_CommandAbc9ReachP,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&reachn",       Abc_CommandAbc9ReachN,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&reachy",       Abc_CommandAbc9ReachY,       0 );
#endif
    Cmd_CommandAdd( pAbc, "ABC9",         "&undo",         Abc_CommandAbc9Undo,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&mesh",         Abc_CommandAbc9Mesh,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&iso",          Abc_CommandAbc9Iso,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&isonpn",       Abc_CommandAbc9IsoNpn,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&isost",        Abc_CommandAbc9IsoSt,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&store",        Abc_CommandAbc9Store,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&compare",      Abc_CommandAbc9Compare,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&reveng",       Abc_CommandAbc9RevEng,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&uif",          Abc_CommandAbc9Uif,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&cexinfo",      Abc_CommandAbc9CexInfo,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&cycle",        Abc_CommandAbc9Cycle,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&cone",         Abc_CommandAbc9Cone,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&slice",        Abc_CommandAbc9Slice,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&popart",       Abc_CommandAbc9PoPart,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&gprove",       Abc_CommandAbc9GroupProve,   0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&mprove",       Abc_CommandAbc9MultiProve,   0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&splitprove",   Abc_CommandAbc9SplitProve,   0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sprove",       Abc_CommandAbc9SProve,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sprove2",      Abc_CommandAbc9SProve2,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&splitsat",     Abc_CommandAbc9SplitSat,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&bmc",          Abc_CommandAbc9Bmc,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&bmcs",         Abc_CommandAbc9SBmc,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&chainbmc",     Abc_CommandAbc9ChainBmc,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&bcore",        Abc_CommandAbc9BCore,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&icheck",       Abc_CommandAbc9ICheck,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&sattest",      Abc_CommandAbc9SatTest,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&fftest",       Abc_CommandAbc9FFTest,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&qbf",          Abc_CommandAbc9Qbf,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&qvar",         Abc_CommandAbc9QVar,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&genqbf",       Abc_CommandAbc9GenQbf,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&genlutcas",    Abc_CommandAbc9GenLutCas,    0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&homoqbf",      Abc_CommandAbc9HomoQbf,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&satfx",        Abc_CommandAbc9SatFx,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&satclp",       Abc_CommandAbc9SatClp,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&inse",         Abc_CommandAbc9Inse,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&maxi",         Abc_CommandAbc9Maxi,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&bmci",         Abc_CommandAbc9Bmci,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&poxsim",       Abc_CommandAbc9PoXsim,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&demiter",      Abc_CommandAbc9Demiter,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&fadds",        Abc_CommandAbc9Fadds,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&atree",        Abc_CommandAbc9ATree,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&polyn",        Abc_CommandAbc9Polyn,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&acec",         Abc_CommandAbc9Acec,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&anorm",        Abc_CommandAbc9Anorm,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&decla",        Abc_CommandAbc9Decla,        0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&esop",         Abc_CommandAbc9Esop,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&exorcism",     Abc_CommandAbc9Exorcism,     0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&mfs",          Abc_CommandAbc9Mfs,          0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&mfsd",         Abc_CommandAbc9Mfsd,         0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&deepsyn",      Abc_CommandAbc9DeepSyn,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&randsyn",      Abc_CommandAbc9RandSyn,      0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&satsyn",       Abc_CommandAbc9SatSyn,       0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&stochsyn",     Abc_CommandAbc9StochSyn,     0 );
//    Cmd_CommandAdd( pAbc, "ABC9",         "&popart2",      Abc_CommandAbc9PoPart2,      0 );
//    Cmd_CommandAdd( pAbc, "ABC9",         "&cexcut",       Abc_CommandAbc9CexCut,       0 );
//    Cmd_CommandAdd( pAbc, "ABC9",         "&cexmerge",     Abc_CommandAbc9CexMerge,     0 );
//    Cmd_CommandAdd( pAbc, "ABC9",         "&cexmin",       Abc_CommandAbc9CexMin,       0 );

    Cmd_CommandAdd( pAbc, "Abstraction",  "&abs_create",   Abc_CommandAbc9AbsCreate,    0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&abs_derive",   Abc_CommandAbc9AbsDerive,    0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&abs_refine",   Abc_CommandAbc9AbsRefine,    0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&gla_derive",   Abc_CommandAbc9GlaDerive,    0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&gla_refine",   Abc_CommandAbc9GlaRefine,    0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&gla_shrink",   Abc_CommandAbc9GlaShrink,    0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&gla",          Abc_CommandAbc9Gla,          0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&vta",          Abc_CommandAbc9Vta,          0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&vta_gla",      Abc_CommandAbc9Vta2Gla,      0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&gla_vta",      Abc_CommandAbc9Gla2Vta,      0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&fla_gla",      Abc_CommandAbc9Fla2Gla,      0 );
    Cmd_CommandAdd( pAbc, "Abstraction",  "&gla_fla",      Abc_CommandAbc9Gla2Fla,      0 );

    Cmd_CommandAdd( pAbc, "Liveness",     "l2s",           Abc_CommandAbcLivenessToSafety,        0 );
    Cmd_CommandAdd( pAbc, "Liveness",     "l2ssim",        Abc_CommandAbcLivenessToSafetySim,     0 );
    Cmd_CommandAdd( pAbc, "Liveness",     "l3s",           Abc_CommandAbcLivenessToSafetyWithLTL, 0 );
    Cmd_CommandAdd( pAbc, "Liveness",     "kcs",           Abc_CommandCS_kLiveness,               0 );
    Cmd_CommandAdd( pAbc, "Liveness",     "nck",           Abc_CommandNChooseK,                   0 );

    Cmd_CommandAdd( pAbc, "ABC9",         "&gen",          Abc_CommandAbc9Gen,                    0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&cfs",          Abc_CommandAbc9Cfs,                    0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&prodadd",      Abc_CommandAbc9ProdAdd,                0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&addflop",      Abc_CommandAbc9AddFlop,                0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&init1",        Abc_CommandAbc9Init1,                  0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&bmiter",       Abc_CommandAbc9BMiter,                 0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&gen_hie",      Abc_CommandAbc9GenHie,                 0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&putontop",     Abc_CommandAbc9PutOnTop,               0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&brecover",     Abc_CommandAbc9BRecover,               0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&str_eco",      Abc_CommandAbc9StrEco,                 0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&gencex",       Abc_CommandAbc9GenCex,                 0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&odc",          Abc_CommandAbc9Odc,                    0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&genrel",       Abc_CommandAbc9GenRel,                 0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&genmux",       Abc_CommandAbc9GenMux,                 0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&gencomp",      Abc_CommandAbc9GenComp,                0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&gensorter",    Abc_CommandAbc9GenSorter,              0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&genneuron",    Abc_CommandAbc9GenNeuron,              0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&genadder",     Abc_CommandAbc9GenAdder,               0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&genprefix",    Abc_CommandAbc9GenPrefix,              0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&window",       Abc_CommandAbc9Window,                 0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&funabs",       Abc_CommandAbc9FunAbs,                 0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&dsdinfo",      Abc_CommandAbc9DsdInfo,                0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&funtrace",     Abc_CommandAbc9FunTrace,               0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&mulfind",      Abc_CommandAbc9MulFind,                0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&mulfind3",     Abc_CommandAbc9MulFind3,               0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&bsfind",       Abc_CommandAbc9BsFind,                 0 );    
    Cmd_CommandAdd( pAbc, "ABC9",         "&andcare",      Abc_CommandAbc9AndCare,                0 );   
    Cmd_CommandAdd( pAbc, "ABC9",         "&cuts",         Abc_CommandAbc9Cuts,                   0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&divide",       Abc_CommandAbc9Divide,                 0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&pipe",         Abc_CommandAbc9Pipeline,               0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&unpipe",       Abc_CommandAbc9Unpipeline,             0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "&regio",        Abc_CommandAbc9Regio,                  0 );

    Cmd_CommandAdd( pAbc, "ABC9",         "&test",         Abc_CommandAbc9Test,                   0 );

    Cmd_CommandAdd( pAbc, "ABC9",         "&eslim",        Abc_CommandAbc9eSLIM,                  0 );
    Cmd_CommandAdd( pAbc, "ABC9",         "elslim",        Abc_CommandAbc9elSLIM,                 0 );
    
    Cmd_CommandAdd( pAbc, "ABC9",         "&catbtor",      Abc_CommandAbc9CatBtor,                0 );
    {
//        extern Mf_ManTruthCount();
//        Mf_ManTruthCount();
    }

    {
        extern void Dar_LibStart();
        Dar_LibStart();
    }
    {
//        extern void Dau_DsdTest();
//        Dau_DsdTest();
//        extern void If_ManSatTest();
//        If_ManSatTest();
    }

//    if ( Sdm_ManCanRead() )
//        Sdm_ManRead();
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
void Abc_End( Abc_Frame_t * pAbc )
{
    extern Abc_Frame_t * Abc_FrameGetGlobalFrame();
    Abc_FrameClearDesign();
    Cnf_ManFree();
    {
        extern int Abc_NtkCompareAndSaveBest( Abc_Ntk_t * pNtk );
        Abc_NtkCompareAndSaveBest( NULL );
    }
    {
        extern void Dar_LibStop();
        Dar_LibStop();
    }
    {
        extern void Aig_RManQuit();
        Aig_RManQuit();
    }
    {
        extern void Npn_ManClean();
        Npn_ManClean();
    }
    {
        extern void Sdm_ManQuit();
        Sdm_ManQuit();
    }
    Abc_NtkFraigStoreClean();
    Gia_ManStopP( &pAbc->pGia );
    Gia_ManStopP( &pAbc->pGia2 );
    Gia_ManStopP( &pAbc->pGiaBest );
    Gia_ManStopP( &pAbc->pGiaBest2 );
    Gia_ManStopP( &pAbc->pGiaSaved );
    if ( Abc_NtkRecIsRunning3() )
        Abc_NtkRecStop3();
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintStats( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int fFactor;
    int fSaveBest;
    int fDumpResult;
    int fUseLutLib;
    int fPrintTime;
    int fPrintMuxes;
    int fPower;
    int fGlitch;
    int fSkipBuf;
    int fSkipSmall;
    int fPrintMem;
    int c;

    pNtk = Abc_FrameReadNtk(pAbc);

    // set the defaults
    fFactor   = 0;
    fSaveBest = 0;
    fDumpResult = 0;
    fUseLutLib = 0;
    fPrintTime = 0;
    fPrintMuxes = 0;
    fPower = 0;
    fGlitch = 0;
    fSkipBuf = 0;
    fSkipSmall = 0;
    fPrintMem = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "fbdltmpgscuh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'f':
            fFactor ^= 1;
            break;
        case 'b':
            fSaveBest ^= 1;
            break;
        case 'd':
            fDumpResult ^= 1;
            break;
        case 'l':
            fUseLutLib ^= 1;
            break;
        case 't':
            fPrintTime ^= 1;
            break;
        case 'm':
            fPrintMuxes ^= 1;
            break;
        case 'p':
            fPower ^= 1;
            break;
        case 'g':
            fGlitch ^= 1;
            break;
        case 's':
            fSkipBuf ^= 1;
            break;
        case 'c':
            fSkipSmall ^= 1;
            break;
        case 'u':
            fPrintMem ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) && fUseLutLib )
    {
        Abc_Print( -1, "Cannot print LUT delay for a non-logic network.\n" );
        return 1;
    }
    Abc_NtkPrintStats( pNtk, fFactor, fSaveBest, fDumpResult, fUseLutLib, fPrintMuxes, fPower, fGlitch, fSkipBuf, fSkipSmall, fPrintMem );
    if ( fPrintTime )
    {
        pAbc->TimeTotal += pAbc->TimeCommand;
        Abc_Print( 1, "elapse: %3.2f seconds, total: %3.2f seconds\n", pAbc->TimeCommand, pAbc->TimeTotal );
        pAbc->TimeCommand = 0.0;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: print_stats [-fbdltmpgscuh]\n" );
    Abc_Print( -2, "\t        prints the network statistics\n" );
    Abc_Print( -2, "\t-f    : toggles printing the literal count in the factored forms [default = %s]\n", fFactor? "yes": "no" );
    Abc_Print( -2, "\t-b    : toggles saving the best logic network in \"best.blif\" [default = %s]\n", fSaveBest? "yes": "no" );
    Abc_Print( -2, "\t-d    : toggles dumping statistics about the network into file [default = %s]\n", fDumpResult? "yes": "no" );
    Abc_Print( -2, "\t-l    : toggles printing delay of LUT mapping using LUT library [default = %s]\n", fUseLutLib? "yes": "no" );
    Abc_Print( -2, "\t-t    : toggles printing runtime statistics [default = %s]\n", fPrintTime? "yes": "no" );
    Abc_Print( -2, "\t-m    : toggles printing MUX statistics [default = %s]\n", fPrintMuxes? "yes": "no" );
    Abc_Print( -2, "\t-p    : toggles printing power dissipation due to switching [default = %s]\n", fPower? "yes": "no" );
    Abc_Print( -2, "\t-g    : toggles printing percentage of increased power due to glitching [default = %s]\n", fGlitch? "yes": "no" );
    Abc_Print( -2, "\t-s    : toggles not counting single-output nodes as nodes [default = %s]\n", fSkipBuf? "yes": "no" );
    Abc_Print( -2, "\t-c    : toggles not counting constants and single-output nodes as nodes [default = %s]\n", fSkipSmall? "yes": "no" );
    Abc_Print( -2, "\t-u    : toggles printing memory usage [default = %s]\n", fPrintMem? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintExdc( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkTemp;
    double Percentage;
    int fShort;
    int c;
    int fPrintDc;
    extern double Abc_NtkSpacePercentage( Abc_Obj_t * pNode );
    pNtk = Abc_FrameReadNtk(pAbc);

    // set the defaults
    fShort  = 1;
    fPrintDc = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "sdh" ) ) != EOF )
    {
        switch ( c )
        {
        case 's':
            fShort ^= 1;
            break;
        case 'd':
            fPrintDc ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( pNtk->pExdc == NULL )
    {
        Abc_Print( -1, "Network has no EXDC.\n" );
        return 1;
    }

    if ( fPrintDc )
    {
        if ( !Abc_NtkIsStrash(pNtk->pExdc) )
        {
            pNtkTemp = Abc_NtkStrash(pNtk->pExdc, 0, 0, 0);
            Percentage = Abc_NtkSpacePercentage( Abc_ObjChild0( Abc_NtkPo(pNtkTemp, 0) ) );
            Abc_NtkDelete( pNtkTemp );
        }
        else
            Percentage = Abc_NtkSpacePercentage( Abc_ObjChild0( Abc_NtkPo(pNtk->pExdc, 0) ) );

        Abc_Print( 1, "EXDC network statistics: " );
        Abc_Print( 1, "(" );
        if ( Percentage > 0.05 && Percentage < 99.95 )
            Abc_Print( 1, "%.2f", Percentage );
        else if ( Percentage > 0.000005 && Percentage < 99.999995 )
            Abc_Print( 1, "%.6f", Percentage );
        else
            Abc_Print( 1, "%f", Percentage );
        Abc_Print( 1, " %% don't-cares)\n" );
    }
    else
        Abc_Print( 1, "EXDC network statistics: \n" );
    Abc_NtkPrintStats( pNtk->pExdc, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );
    return 0;

usage:
    Abc_Print( -2, "usage: print_exdc [-dh]\n" );
    Abc_Print( -2, "\t        prints the EXDC network statistics\n" );
    Abc_Print( -2, "\t-d    : toggles printing don't-care percentage [default = %s]\n", fPrintDc? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintIo( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Obj_t * pNode;
    int c, fPrintFlops = 1;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "fh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'f':
            fPrintFlops ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( argc > globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }

    if ( argc == globalUtilOptind + 1 )
    {
        pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] );
        if ( pNode == NULL )
        {
            Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] );
            return 1;
        }
        Abc_NodePrintFanio( stdout, pNode );
        return 0;
    }
    // print the nodes
    Abc_NtkPrintIo( stdout, pNtk, fPrintFlops );
    return 0;

usage:
    Abc_Print( -2, "usage: print_io [-fh] <node>\n" );
    Abc_Print( -2, "\t        prints the PIs/POs/flops or fanins/fanouts of a node\n" );
    Abc_Print( -2, "\t-f    : toggles printing flops [default = %s]\n", fPrintFlops? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    Abc_Print( -2, "\tnode  : the node to print fanins/fanouts\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintLatch( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fPrintSccs;
    extern void Abc_NtkPrintSccs( Abc_Ntk_t * pNtk, int fVerbose );

    // set defaults
    fPrintSccs = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "sh" ) ) != EOF )
    {
        switch ( c )
        {
        case 's':
            fPrintSccs ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    // print the nodes
    Abc_NtkPrintLatch( stdout, pNtk );
    if ( fPrintSccs )
        Abc_NtkPrintSccs( pNtk, 0 );
    return 0;

usage:
    Abc_Print( -2, "usage: print_latch [-sh]\n" );
    Abc_Print( -2, "\t        prints information about latches\n" );
    Abc_Print( -2, "\t-s    : toggles printing SCCs of registers [default = %s]\n", fPrintSccs? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintFanio( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseFanio = 0;
    int fUsePio   = 0;
    int fUseSupp  = 0;
    int fUseCone  = 0;
    int fMffc     = 0;
    int fVerbose  = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "fiscmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'f':
            fUseFanio ^= 1;
            break;
        case 'i':
            fUsePio ^= 1;
            break;
        case 's':
            fUseSupp ^= 1;
            break;
        case 'c':
            fUseCone ^= 1;
            break;
        case 'm':
            fMffc ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    // print the nodes
    if ( fMffc || !fVerbose )
        Abc_NtkPrintFanioNew( stdout, pNtk, fMffc );
    else
    {
        if ( fUseFanio + fUsePio + fUseSupp + fUseCone == 1 )
            Abc_NtkPrintFanio( stdout, pNtk, fUseFanio, fUsePio, fUseSupp, fUseCone );
        else
            printf( "Exactly one of the switches \"-f\", \"-i\", \"-s\", \"-c\" should be enabled.\n" );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: print_fanio [-fiscmvh]\n" );
    Abc_Print( -2, "\t        prints the statistics about different objects in the network\n" );
    Abc_Print( -2, "\t-f    : toggles considering fanins/fanouts of all nodes [default = %s]\n", fUseFanio? "yes": "no" );
    Abc_Print( -2, "\t-i    : toggles considering fanins/fanouts of CI/CO [default = %s]\n", fUsePio? "yes": "no" );
    Abc_Print( -2, "\t-s    : toggles considering TFO/TFI support sizes of CI/CO [default = %s]\n", fUseSupp? "yes": "no" );
    Abc_Print( -2, "\t-c    : toggles considering TFO/TFI cone sizes of CI/CO [default = %s]\n", fUseCone? "yes": "no" );
    Abc_Print( -2, "\t-m    : toggles printing MFFC sizes instead of fanouts [default = %s]\n", fMffc? "yes": "no" );
    Abc_Print( -2, "\t-v    : toggles verbose way of printing the stats [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintMffc( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    extern void Abc_NtkPrintMffc( FILE * pFile, Abc_Ntk_t * pNtk );

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // print the nodes
    Abc_NtkPrintMffc( stdout, pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: print_mffc [-h]\n" );
    Abc_Print( -2, "\t        prints the MFFC of each node in the network\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintFactor( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NodePrintSop( FILE * pFile, Abc_Obj_t * pNode, int fUseRealNames );
    extern void Abc_NtkPrintSop( FILE * pFile, Abc_Ntk_t * pNtk, int fUseRealNames );

    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Obj_t * pNode;
    int c, fSop = 0;
    int fUseRealNames;

    // set defaults
    fUseRealNames = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "snh" ) ) != EOF )
    {
        switch ( c )
        {
        case 's':
            fSop ^= 1;
            break;
        case 'n':
            fUseRealNames ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsSopLogic(pNtk) )
    {
        Abc_Print( -1, "Printing factored forms can be done for SOP networks.\n" );
        return 1;
    }

    if ( argc > globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }

    if ( argc == globalUtilOptind + 1 )
    {
        pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] );
        if ( pNode == NULL )
        {
            Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] );
            return 1;
        }
        if ( fSop )
            Abc_NodePrintSop( stdout, pNode, fUseRealNames );
        else
            Abc_NodePrintFactor( stdout, pNode, fUseRealNames );
        return 0;
    }
    // print the nodes
    if ( fSop )
        Abc_NtkPrintSop( stdout, pNtk, fUseRealNames );
    else
        Abc_NtkPrintFactor( stdout, pNtk, fUseRealNames );
    return 0;

usage:
    Abc_Print( -2, "usage: print_factor [-snh] <node>\n" );
    Abc_Print( -2, "\t        prints the factored forms (FFs) of nodes\n" );
    Abc_Print( -2, "\t-s    : toggles printing SOP instead of FF [default = %s]\n", fSop? "SOP": "FF" );
    Abc_Print( -2, "\t-n    : toggles real/dummy fanin names [default = %s]\n", fUseRealNames? "real": "dummy" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    Abc_Print( -2, "\tnode  : (optional) one node to consider\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintLevel( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Obj_t * pNode;
    int c;
    int fListNodes;
    int fProfile;
    int fOutputs;
    int fVerbose;

    // set defaults
    fListNodes = 0;
    fProfile   = 1;
    fOutputs   = 0;
    fVerbose   = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "npovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'n':
            fListNodes ^= 1;
            break;
        case 'p':
            fProfile ^= 1;
            break;
        case 'o':
            fOutputs ^= 1;
            break;            
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !fProfile && !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for AIGs (run \"strash\").\n" );
        return 1;
    }

    if ( argc > globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }

    if ( argc == globalUtilOptind + 1 )
    {
        pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] );
        if ( pNode == NULL )
        {
            Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] );
            return 1;
        }
        Abc_NodePrintLevel( stdout, pNode );
        return 0;
    }
    // process all COs
    Abc_NtkPrintLevel( stdout, pNtk, fProfile, fListNodes, fOutputs, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: print_level [-npovh] <node>\n" );
    Abc_Print( -2, "\t        prints information about node level and cone size\n" );
    Abc_Print( -2, "\t-n    : toggles printing nodes by levels [default = %s]\n", fListNodes? "yes": "no" );
    Abc_Print( -2, "\t-p    : toggles printing level profile [default = %s]\n", fProfile? "yes": "no" );
    Abc_Print( -2, "\t-o    : toggles printing output levels [default = %s]\n", fOutputs? "yes": "no" );
    Abc_Print( -2, "\t-v    : enable verbose output [default = %s].\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    Abc_Print( -2, "\tnode  : (optional) one node to consider\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintSupport( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Vec_Ptr_t * vSuppFun;
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fStruct;
    int fVerbose;
    int fVeryVerbose;
    extern Vec_Ptr_t * Sim_ComputeFunSupp( Abc_Ntk_t * pNtk, int fVerbose );
    extern void Abc_NtkPrintStrSupports( Abc_Ntk_t * pNtk, int fMatrix );

    // set defaults
    fStruct = 1;
    fVerbose = 0;
    fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "svwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 's':
            fStruct ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // print support information
    if ( fStruct )
    {
        Abc_NtkPrintStrSupports( pNtk, fVeryVerbose );
        return 0;
    }

    if ( !Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "This command works only for combinational networks (run \"comb\").\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for AIGs (run \"strash\").\n" );
        return 1;
    }
    vSuppFun = Sim_ComputeFunSupp( pNtk, fVerbose );
    ABC_FREE( vSuppFun->pArray[0] );
    Vec_PtrFree( vSuppFun );
    return 0;

usage:
    Abc_Print( -2, "usage: print_supp [-svwh]\n" );
    Abc_Print( -2, "\t        prints the supports of the CO nodes\n" );
    Abc_Print( -2, "\t-s    : toggle printing structural support only [default = %s].\n", fStruct? "yes": "no" );
    Abc_Print( -2, "\t-v    : enable verbose output [default = %s].\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w    : enable printing CI/CO dependency matrix [default = %s].\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintNpn( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Dau_PrintNpnFunctions( word * p, int nVars, int fVerbose );
    char * pTruthStr = NULL;
    word   pTruth[16] = {0};
    int c, nVars, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( globalUtilOptind != argc-1 )
    {
        Abc_Print( -1, "The command expects the truth table on the command line.\n" );
        goto usage;
    }
    pTruthStr = argv[globalUtilOptind];
    nVars = Abc_TtReadHex( pTruth, pTruthStr );
    assert( nVars <= 10 );
    Dau_PrintNpnFunctions( pTruth, nVars, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: print_npn [-vh] <truth>\n" );
    Abc_Print( -2, "\t           prints the NPN members of the given function\n" );
    Abc_Print( -2, "\t-v       : enable verbose output [default = %s].\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t<truth>  : the truth table in hexadecimal notation\n");
    
    return 1;
}




/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
#ifdef ABC_USE_CUDD
int Abc_CommandPrintMint( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Obj_t * pObj;
    int c;
    int fVerbose;

    // set defaults
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "svwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for logic networks (run \"clp\").\n" );
        return 1;
    }
    if ( !Abc_NtkHasBdd(pNtk) )
    {
        Abc_Print( -1, "This command works only for logic networks with local functions represented by BDDs.\n" );
        return 1;
    }

    Abc_NtkForEachNode( pNtk, pObj, c )
        printf( "ObjId %3d : SuppSize = %5d   MintCount = %32.0f\n", c, Abc_ObjFaninNum(pObj), 
            Cudd_CountMinterm((DdManager *)pNtk->pManFunc, (DdNode *)pObj->pData, Abc_ObjFaninNum(pObj)) );
    return 0;

usage:
    Abc_Print( -2, "usage: print_mint [-svwh]\n" );
    Abc_Print( -2, "\t        prints the number of on-set minterms in the PO functions\n" );
    Abc_Print( -2, "\t-v    : enable verbose output [default = %s].\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}
#endif

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintSymms( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseBdds;
    int fNaive;
    int fReorder;
    int fVerbose;
    extern void Abc_NtkSymmetries( Abc_Ntk_t * pNtk, int fUseBdds, int fNaive, int fReorder, int fVerbose );

    // set defaults
    fUseBdds = 0;
    fNaive   = 0;
    fReorder = 1;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "bnrvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'b':
            fUseBdds ^= 1;
            break;
        case 'n':
            fNaive ^= 1;
            break;
        case 'r':
            fReorder ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "This command works only for combinational networks (run \"comb\").\n" );
        return 1;
    }
    if ( Abc_NtkIsStrash(pNtk) )
        Abc_NtkSymmetries( pNtk, fUseBdds, fNaive, fReorder, fVerbose );
    else
    {
        pNtk = Abc_NtkStrash( pNtk, 0, 0, 0 );
        Abc_NtkSymmetries( pNtk, fUseBdds, fNaive, fReorder, fVerbose );
        Abc_NtkDelete( pNtk );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: print_symm [-bnrvh]\n" );
    Abc_Print( -2, "\t         computes symmetries of the PO functions\n" );
    Abc_Print( -2, "\t-b     : toggle BDD-based or SAT-based computations [default = %s].\n", fUseBdds? "BDD": "SAT" );
    Abc_Print( -2, "\t-n     : enable naive BDD-based computation [default = %s].\n", fNaive? "yes": "no" );
    Abc_Print( -2, "\t-r     : enable dynamic BDD variable reordering [default = %s].\n", fReorder? "yes": "no" );
    Abc_Print( -2, "\t-v     : enable verbose output [default = %s].\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintUnate( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseBdds;
    int fUseNaive;
    int fVerbose;
    extern void Abc_NtkPrintUnate( Abc_Ntk_t * pNtk, int fUseBdds, int fUseNaive, int fVerbose );

    // set defaults
    fUseBdds  = 1;
    fUseNaive = 0;
    fVerbose  = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "bnvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'b':
            fUseBdds ^= 1;
            break;
        case 'n':
            fUseNaive ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for AIGs (run \"strash\").\n" );
        return 1;
    }
    Abc_NtkPrintUnate( pNtk, fUseBdds, fUseNaive, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: print_unate [-bnvh]\n" );
    Abc_Print( -2, "\t         computes unate variables of the PO functions\n" );
    Abc_Print( -2, "\t-b     : toggle BDD-based or SAT-based computations [default = %s].\n", fUseBdds? "BDD": "SAT" );
    Abc_Print( -2, "\t-n     : toggle naive BDD-based computation [default = %s].\n", fUseNaive? "yes": "no" );
    Abc_Print( -2, "\t-v     : enable verbose output [default = %s].\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintAuto( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int Output;
    int fNaive;
    int fVerbose;
    extern void Abc_NtkAutoPrint( Abc_Ntk_t * pNtk, int Output, int fNaive, int fVerbose );

    // set defaults
    Output   = -1;
    fNaive   = 0;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Onvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            Output = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Output < 0 )
                goto usage;
            break;
        case 'n':
            fNaive ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for AIGs (run \"strash\").\n" );
        return 1;
    }


    Abc_NtkAutoPrint( pNtk, Output, fNaive, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: print_auto [-O <num>] [-nvh]\n" );
    Abc_Print( -2, "\t           computes autosymmetries of the PO functions\n" );
    Abc_Print( -2, "\t-O <num> : (optional) the 0-based number of the output [default = all]\n");
    Abc_Print( -2, "\t-n       : enable naive BDD-based computation [default = %s].\n", fNaive? "yes": "no" );
    Abc_Print( -2, "\t-v       : enable verbose output [default = %s].\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintKMap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Obj_t * pNode;
    int c;
    int fUseRealNames;

    extern void Abc_NodePrintKMap( Abc_Obj_t * pNode, int fUseRealNames );

    // set defaults
    fUseRealNames = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "nh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'n':
            fUseRealNames ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 2 )
    {
        Abc_NtkShow6VarFunc( argv[globalUtilOptind], argv[globalUtilOptind+1] );
        return 0;
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Visualization of Karnaugh maps works for logic networks.\n" );
        return 1;
    }
    if ( argc > globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }
    if ( argc == globalUtilOptind )
    {
        pNode = Abc_ObjFanin0( Abc_NtkPo(pNtk, 0) );
        if ( !Abc_ObjIsNode(pNode) )
        {
            Abc_Print( -1, "The driver \"%s\" of the first PO is not an internal node.\n", Abc_ObjName(pNode) );
            return 1;
        }
    }
    else
    {
        pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] );
        if ( pNode == NULL )
        {
            Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] );
            return 1;
        }
    }
    Abc_NtkToBdd(pNtk);
    Abc_NodePrintKMap( pNode, fUseRealNames );
    return 0;

usage:
    Abc_Print( -2, "usage: print_kmap [-nh] <node>\n" );
    Abc_Print( -2, "\t        shows the truth table of the node\n" );
    Abc_Print( -2, "\t-n    : toggles real/dummy fanin names [default = %s]\n", fUseRealNames? "real": "dummy" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    Abc_Print( -2, "\t<node>: the node to consider (default = the driver of the first PO)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintGates( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseLibrary;
    int fUpdateProfile;
    int fVerbose;

    extern void Abc_NtkPrintGates( Abc_Ntk_t * pNtk, int fUseLibrary, int fUpdateProfile );
    extern void Abc_NtkPrintGates2( Abc_Ntk_t * pNtk );

    // set defaults
    fUseLibrary = 1;
    fUpdateProfile = 0;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "luvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUseLibrary ^= 1;
            break;
        case 'u':
            fUpdateProfile ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkHasAig(pNtk) )
    {
        Abc_Print( -1, "Printing gates does not work for AIGs and sequential AIGs.\n" );
        return 1;
    }
    if ( fVerbose )
        Abc_NtkPrintGates2( pNtk );
    else
        Abc_NtkPrintGates( pNtk, fUseLibrary, fUpdateProfile );
    return 0;

usage:
    Abc_Print( -2, "usage: print_gates [-luvh]\n" );
    Abc_Print( -2, "\t        prints statistics about gates used in the network\n" );
    Abc_Print( -2, "\t-l    : used library gate names (if mapped) [default = %s]\n", fUseLibrary? "yes": "no" );
    Abc_Print( -2, "\t-u    : update profile before printing it[default = %s]\n", fUpdateProfile? "yes": "no" );
    Abc_Print( -2, "\t-v    : enable verbose output [default = %s].\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintSharing( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseLibrary;

    extern void Abc_NtkPrintSharing( Abc_Ntk_t * pNtk );

    // set defaults
    fUseLibrary = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUseLibrary ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    Abc_NtkPrintSharing( pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: print_sharing [-h]\n" );
    Abc_Print( -2, "\t        prints the number of shared nodes in the TFI cones of the COs\n" );
//    Abc_Print( -2, "\t-l    : used library gate names (if mapped) [default = %s]\n", fUseLibrary? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintXCut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseLibrary;

    extern int Abc_NtkCrossCut( Abc_Ntk_t * pNtk );

    // set defaults
    fUseLibrary = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUseLibrary ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    Abc_NtkCrossCut( pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: print_xcut [-h]\n" );
    Abc_Print( -2, "\t        prints the size of the cross cut of the current network\n" );
//    Abc_Print( -2, "\t-l    : used library gate names (if mapped) [default = %s]\n", fUseLibrary? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintDsd( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fCofactor;
    int nCofLevel;
    int fProfile;
    int fPrintDec;

    extern void Kit_DsdTest( unsigned * pTruth, int nVars );
    extern void Kit_DsdPrintCofactors( unsigned * pTruth, int nVars, int nCofLevel, int fVerbose );
    extern void Dau_DecTrySets( word * p, int nVars, int fVerbose );

    // set defaults
    nCofLevel = 1;
    fCofactor = 0;
    fProfile  = 0;
    fPrintDec = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Npcdh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nCofLevel = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCofLevel < 0 )
                goto usage;
            break;
        case 'p':
            fProfile ^= 1;
            break;
        case 'c':
            fCofactor ^= 1;
            break;
        case 'd':
            fPrintDec ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    // get the truth table of the first output
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Currently works only for logic networks.\n" );
        return 1;
    }
    Abc_NtkToAig( pNtk );
    // convert it to truth table
    {
        Abc_Obj_t * pObj = Abc_ObjFanin0( Abc_NtkPo(pNtk, 0) );
        Vec_Int_t * vMemory;
        unsigned * pTruth;
        if ( !Abc_ObjIsNode(pObj) )
        {
            Abc_Print( -1, "The fanin of the first PO node does not have a logic function.\n" );
            return 1;
        }
        if ( Abc_ObjFaninNum(pObj) > 16 )
        {
            Abc_Print( -1, "Currently works only for up to 16 inputs.\n" );
            return 1;
        }
        vMemory = Vec_IntAlloc(0);
        pTruth = Hop_ManConvertAigToTruth( (Hop_Man_t *)pNtk->pManFunc, Hop_Regular((Hop_Obj_t *)pObj->pData), Abc_ObjFaninNum(pObj), vMemory, 0 );
        if ( Hop_IsComplement((Hop_Obj_t *)pObj->pData) )
            Extra_TruthNot( pTruth, pTruth, Abc_ObjFaninNum(pObj) );
//        Extra_PrintBinary( stdout, pTruth, 1 << Abc_ObjFaninNum(pObj) );
//        Abc_Print( -1, "\n" );
        if ( fPrintDec )//&&Abc_ObjFaninNum(pObj) <= 6 )
        {
            word * pTruthW = (word *)pTruth;
            if ( Abc_ObjFaninNum(pObj) < 6 )
                pTruthW[0] = Abc_Tt6Stretch( pTruthW[0], Abc_ObjFaninNum(pObj) );
            Dau_DecTrySets( (word *)pTruth, Abc_ObjFaninNum(pObj), 1 );
        }
        if ( fProfile )
            Kit_TruthPrintProfile( pTruth, Abc_ObjFaninNum(pObj) );
        else if ( fCofactor )
            Kit_DsdPrintCofactors( pTruth, Abc_ObjFaninNum(pObj), nCofLevel, 1 );
        else
            Kit_DsdTest( pTruth, Abc_ObjFaninNum(pObj) );
        Vec_IntFree( vMemory );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: print_dsd [-pcdh] [-N <num>]\n" );
    Abc_Print( -2, "\t           print DSD formula for a single-output function with less than 16 variables\n" );
    Abc_Print( -2, "\t-p       : toggle printing profile [default = %s]\n", fProfile? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggle recursive cofactoring [default = %s]\n", fCofactor? "yes": "no" );
    Abc_Print( -2, "\t-d       : toggle printing decompositions [default = %s]\n", fPrintDec? "yes": "no" );
    Abc_Print( -2, "\t-N <num> : the number of levels to cofactor [default = %d]\n", nCofLevel );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintCone( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseLibrary;

    // set defaults
    fUseLibrary = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUseLibrary ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 1;
    }
    Abc_NtkDarPrintCone( pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: print_cone [-h]\n" );
    Abc_Print( -2, "\t        prints cones of influence info for each primary output\n" );
//    Abc_Print( -2, "\t-l    : used library gate names (if mapped) [default = %s]\n", fUseLibrary? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintMiter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseLibrary;

    extern void Abc_NtkPrintMiter( Abc_Ntk_t * pNtk );

    // set defaults
    fUseLibrary = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUseLibrary ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "The network is should be structurally hashed.\n" );
        return 1;
    }
    Abc_NtkPrintMiter( pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: print_miter [-h]\n" );
    Abc_Print( -2, "\t        prints the status of the miter\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintStatus( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkDumpOneCexSpecial( FILE * pFile, Abc_Ntk_t * pNtk, Abc_Cex_t * pCex );
    extern void Abc_NtkPrintPoEquivs( Abc_Ntk_t * pNtk );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c, fOutStatus = 0, fShort = 1;
    char * pLogFileName = NULL;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Losh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'o':
            fOutStatus ^= 1;
            break;
        case 's':
            fShort ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( fOutStatus )
    {
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Empty network.\n" );
            return 1;
        }
        Abc_NtkPrintPoEquivs( pNtk );
        return 0;
    }
    if ( !pAbc->vStatuses )
        Abc_Print( 1,"Status = %d  Frames = %d   ", pAbc->Status, pAbc->nFrames );
    if ( pAbc->pCex == NULL && pAbc->vCexVec == NULL )
        Abc_Print( 1,"Cex is not defined.\n" );
    else
    {
        if ( pAbc->pCex )
            Abc_CexPrintStats( pAbc->pCex );
        if ( pAbc->vCexVec )
        {
            Abc_Cex_t * pTemp;
            int nCexes = 0;
            int Counter = 0;
            //printf( "\n" );
            Vec_PtrForEachEntry( Abc_Cex_t *, pAbc->vCexVec, pTemp, c )
            {
                if ( pTemp == (void *)(ABC_PTRINT_T)1 )
                {
                    Counter++;
                    continue;
                }
                if ( pTemp )
                {
                    printf( "%4d : ", ++nCexes );
                    Abc_CexPrintStats( pTemp );
                }
            }
//            if ( Counter )
//                printf( "In total, %d (out of %d) outputs are \"sat\" but CEXes are not recorded.\n", Counter, Vec_PtrSize(pAbc->vCexVec) );
        }
    }
    if ( pAbc->vStatuses )
    {
        if ( pLogFileName )
        {
            Abc_Cex_t * pTemp = NULL;
            FILE * pFile = fopen( pLogFileName, "wb" );
            if ( pFile == NULL )
            {
                printf( "Cannot open file \"%s\" for writing.\n", pLogFileName );
                return 0;
            }
            Vec_PtrForEachEntry( Abc_Cex_t *, pAbc->vCexVec, pTemp, c )
            {
                int Status = Vec_IntEntry( pAbc->vStatuses, c );
                if ( Status == -1 ) // undec
                    fprintf( pFile, "STATUS: ABORTED " );
                else if ( Status == 0 )
                    fprintf( pFile, "STATUS: SAT " );
                else if ( Status == 1 )
                    fprintf( pFile, "STATUS: UNSAT " );
                fprintf( pFile, "%s\n", Abc_ObjName(Abc_NtkPo(pNtk, c)) );
                if ( Status != 0 )
                    continue;
                Abc_NtkDumpOneCexSpecial( pFile, pNtk, pTemp );
            }
            fclose( pFile );
        }
        else if ( fShort )
        {
            printf( "Status array contains %d SAT, %d UNSAT, and %d UNDEC entries (out of %d).",
                Vec_IntCountEntry(pAbc->vStatuses, 0), Vec_IntCountEntry(pAbc->vStatuses, 1),
                Vec_IntCountEntry(pAbc->vStatuses, -1), Vec_IntSize(pAbc->vStatuses) );
        }
        else
        {
            int i, Entry;
            Vec_IntForEachEntry( pAbc->vStatuses, Entry, i )
                printf( "%d=%d  ", i, Entry );
        }
        printf( "\n" );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: print_status [-L file] [-osh]\n" );
    Abc_Print( -2, "\t          prints verification status\n" );
    Abc_Print( -2, "\t-L file : the log file name [default = %s]\n",  pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-o      : toggle printing output status [default = %s]\n", fOutStatus? "yes": "no" );
    Abc_Print( -2, "\t-s      : toggle using short print-out [default = %s]\n", fShort? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPrintDelay( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Obj_t * pObjIn = NULL, * pObjOut = NULL;
    int c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsMappedLogic(pNtk) )
    {
        Abc_Print( -1, "Delay trace works only for network mapped into standard cells.\n" );
        return 1;
    }
    if ( argc > globalUtilOptind + 2 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }
    // collect the first name (PO name)
    if ( argc >= globalUtilOptind + 1 )
    {
        int Num = Nm_ManFindIdByName( pNtk->pManName, argv[globalUtilOptind], ABC_OBJ_PO );
        if ( Num < 0 )
            Num = Nm_ManFindIdByName( pNtk->pManName, argv[globalUtilOptind], ABC_OBJ_BI );
        if ( Num >= 0 )
            pObjOut = Abc_NtkObj( pNtk, Num );
        if ( pObjOut == NULL )
        {
            Abc_Print( 1, "Cannot find combinational output \"%s\".\n", argv[globalUtilOptind] );
            return 1;
        }
    }
    // collect the second name (PI name)
    if ( argc == globalUtilOptind + 2 )
    {
        int Num = Nm_ManFindIdByName( pNtk->pManName, argv[globalUtilOptind+1], ABC_OBJ_PI );
        if ( Num < 0 )
            Num = Nm_ManFindIdByName( pNtk->pManName, argv[globalUtilOptind+1], ABC_OBJ_BO );
        if ( Num >= 0 )
            pObjIn = Abc_NtkObj( pNtk, Num );
        if ( pObjIn == NULL )
        {
            Abc_Print( 1, "Cannot find combinational input \"%s\".\n", argv[globalUtilOptind+1] );
            return 1;
        }
    }
    Abc_NtkDelayTrace( pNtk, pObjOut, pObjIn, 1 );
    return 0;

usage:
    Abc_Print( -2, "usage: print_delay [-h] <CO_name> <CI_name>\n" );
    Abc_Print( -2, "\t            prints one critical path of the mapped network\n" );
    Abc_Print( -2, "\t-h        : print the command usage\n");
    Abc_Print( -2, "\t<CO_name> : (optional) the sink of the critical path (primary output or flop input)\n");
    Abc_Print( -2, "\t<CI_name> : (optional) the source of the critical path (primary input or flop output)\n");
    Abc_Print( -2, "\t            (if CO and/or CI are not given, uses the most critical ones)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandShow( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fSeq;
    int fGateNames;
    int fUseReverse;
    int fFlopDep;
    int fKeepDot;
    int fAigIds;
    extern void Abc_NtkShow( Abc_Ntk_t * pNtk, int fGateNames, int fSeq, int fUseReverse, int fKeepDot, int fAigIds );
    extern void Abc_NtkShowFlopDependency( Abc_Ntk_t * pNtk );

    // set defaults
    fSeq        = 0;
    fGateNames  = 0;
    fUseReverse = 1;
    fFlopDep    = 0;
    fKeepDot    = 0;
    fAigIds     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "rsgfdih" ) ) != EOF )
    {
        switch ( c )
        {
        case 'r':
            fUseReverse ^= 1;
            break;
        case 's':
            fSeq ^= 1;
            break;
        case 'g':
            fGateNames ^= 1;
            break;
        case 'f':
            fFlopDep ^= 1;
            break;
        case 'd':
            fKeepDot ^= 1;
            break;
        case 'i':
            fAigIds ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( fFlopDep )
        Abc_NtkShowFlopDependency( pNtk );
    else
        Abc_NtkShow( pNtk, fGateNames, fSeq, fUseReverse, fKeepDot, fAigIds );
    return 0;

usage:
    Abc_Print( -2, "usage: show [-srgfdih]\n" );
    Abc_Print( -2, "       visualizes the network structure using DOT and GSVIEW\n" );
#ifdef WIN32
    Abc_Print( -2, "       \"dot.exe\" and \"gsview32.exe\" should be set in the paths\n" );
    Abc_Print( -2, "       (\"gsview32.exe\" may be in \"C:\\Program Files\\Ghostgum\\gsview\\\")\n" );
#endif
    Abc_Print( -2, "\t-s    : toggles visualization of sequential networks [default = %s].\n", fSeq? "yes": "no" );
    Abc_Print( -2, "\t-r    : toggles ordering nodes in reverse order [default = %s].\n", fUseReverse? "yes": "no" );
    Abc_Print( -2, "\t-g    : toggles printing gate names for mapped network [default = %s].\n", fGateNames? "yes": "no" );
    Abc_Print( -2, "\t-f    : toggles visualizing flop dependency graph [default = %s].\n", fFlopDep? "yes": "no" );
    Abc_Print( -2, "\t-d    : toggles keeping the .dot file used to produce the .ps file [default = %s].\n", fKeepDot? "yes": "no" );
    Abc_Print( -2, "\t-i    : toggles using original AIG object IDs as node labels [default = %s].\n", fAigIds? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandShowBdd( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc); Abc_Obj_t * pNode;
    int c, fCompl = 0, fGlobal = 0, fReorder = 1, fWidth = 0;
    extern void Abc_NodeShowBdd( Abc_Obj_t * pNode, int fCompl );
    extern void Abc_NtkShowBdd( Abc_Ntk_t * pNtk, int fCompl, int fReorder );
    extern void Abc_NtkBddDecExplore( Abc_Obj_t * pNode );

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "cgrwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fCompl ^= 1;
            break;
        case 'g':
            fGlobal ^= 1;
            break;
        case 'r':
            fReorder ^= 1;
            break;
        case 'w':
            fWidth ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }    

    if ( fGlobal )
    {
        Abc_Ntk_t * pTemp = Abc_NtkIsStrash(pNtk) ? pNtk : Abc_NtkStrash(pNtk, 0, 0, 0);
        Abc_NtkShowBdd( pTemp, fCompl, fReorder );
        if ( pTemp != pNtk )
            Abc_NtkDelete( pTemp );
        return 0;
    }

    if ( !Abc_NtkIsBddLogic(pNtk) )
    {
        Abc_Print( -1, "Visualizing BDDs can only be done for logic BDD networks (run \"bdd\").\n" );
        return 1;
    }    
    if ( argc > globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }
    if ( argc == globalUtilOptind )
    {
        pNode = Abc_ObjFanin0( Abc_NtkPo(pNtk, 0) );
        if ( !Abc_ObjIsNode(pNode) )
        {
            Abc_Print( -1, "The driver \"%s\" of the first PO is not an internal node.\n", Abc_ObjName(pNode) );
            return 1;
        }
    }
    else
    {
        pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] );
        if ( pNode == NULL )
        {
            Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] );
            return 1;
        }
    }
    if ( fWidth )
        Abc_NtkBddDecExplore( pNode );
    else
        Abc_NodeShowBdd( pNode, fCompl );
    return 0;

usage:
    Abc_Print( -2, "usage: show_bdd [-cgrwh] <node>\n" );
    Abc_Print( -2, "       uses DOT and GSVIEW to visualize the global BDDs of primary outputs\n" );
    Abc_Print( -2, "       in terms of primary inputs or the local BDD of a node in terms of its fanins\n" );
#ifdef WIN32
    Abc_Print( -2, "       \"dot.exe\" and \"gsview32.exe\" should be set in the paths\n" );
    Abc_Print( -2, "       (\"gsview32.exe\" may be in \"C:\\Program Files\\Ghostgum\\gsview\\\")\n" );
#endif
    Abc_Print( -2, "\t<node>: (optional) the node to consider [default = the driver of the first PO]\n");
    Abc_Print( -2, "\t-c    : toggle visualizing BDD with complemented edges [default = %s].\n", fCompl? "yes": "no" );
    Abc_Print( -2, "\t-g    : toggle visualizing the global BDDs of primary outputs [default = %s].\n", fGlobal? "yes": "no" );
    Abc_Print( -2, "\t-r    : toggles dynamic variable reordering [default = %s]\n", fReorder? "yes": "no" );
    Abc_Print( -2, "\t-w    : toggles printing width profile of the node's BDD [default = %s]\n", fWidth? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandShowCut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Obj_t * pNode;
    int c;
    int nNodeSizeMax;
    int nConeSizeMax;
    extern void Abc_NodeShowCut( Abc_Obj_t * pNode, int nNodeSizeMax, int nConeSizeMax );

    // set defaults
    nNodeSizeMax = 10;
    nConeSizeMax = ABC_INFINITY;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NCh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nNodeSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodeSizeMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConeSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConeSizeMax < 0 )
                goto usage;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Visualizing cuts only works for AIGs (run \"strash\").\n" );
        return 1;
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }

    pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] );
    if ( pNode == NULL )
    {
        Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] );
        return 1;
    }
    Abc_NodeShowCut( pNode, nNodeSizeMax, nConeSizeMax );
    return 0;

usage:
    Abc_Print( -2, "usage: show_cut [-N <num>] [-C <num>] [-h] <node>\n" );
    Abc_Print( -2, "             visualizes the cut of a node using DOT and GSVIEW\n" );
#ifdef WIN32
    Abc_Print( -2, "             \"dot.exe\" and \"gsview32.exe\" should be set in the paths\n" );
    Abc_Print( -2, "             (\"gsview32.exe\" may be in \"C:\\Program Files\\Ghostgum\\gsview\\\")\n" );
#endif
    Abc_Print( -2, "\t-N <num> : the max size of the cut to be computed [default = %d]\n", nNodeSizeMax );
    Abc_Print( -2, "\t-C <num> : the max support of the containing cone [default = %d]\n", nConeSizeMax );
    Abc_Print( -2, "\t<node>   : the node to consider\n");
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCollapse( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int fVerbose;
    int fBddSizeMax;
    int fDualRail;
    int fReorder;
    int fReverse;
    int fDumpOrder;
    int c;
    char * pLogFileName = NULL;
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    fVerbose = 0;
    fReorder = 1;
    fReverse = 0;
    fDualRail = 0;
    fDumpOrder = 0;
    fBddSizeMax = ABC_INFINITY;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "BLrodxvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            fBddSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( fBddSizeMax < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'r':
            fReorder ^= 1;
            break;
        case 'o':
            fReverse ^= 1;
            break;
        case 'd':
            fDualRail ^= 1;
            break;
        case 'x':
            fDumpOrder ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsLogic(pNtk) && !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Can only collapse a logic network or an AIG.\n" );
        return 1;
    }

    // get the new network
    if ( Abc_NtkIsStrash(pNtk) )
        pNtkRes = Abc_NtkCollapse( pNtk, fBddSizeMax, fDualRail, fReorder, fReverse, fDumpOrder, fVerbose );
    else
    {
        pNtk = Abc_NtkStrash( pNtk, 0, 0, 0 );
        pNtkRes = Abc_NtkCollapse( pNtk, fBddSizeMax, fDualRail, fReorder, fReverse, fDumpOrder, fVerbose );
        Abc_NtkDelete( pNtk );
    }
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Collapsing has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    if ( pLogFileName )
    {
        pAbc->pCex = NULL;
        pAbc->nFrames = -1;
        if ( Abc_NtkNodeNum(pNtkRes) == 0 ) 
            pAbc->Status =  1; // UNSAT
        else
            pAbc->Status = -1; // UNDEC
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "collapse" );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: collapse [-B <num>] [-L file] [-rodxvh]\n" );
    Abc_Print( -2, "\t          collapses the network by constructing global BDDs\n" );
    Abc_Print( -2, "\t-B <num>: limit on live BDD nodes during collapsing [default = %d]\n", fBddSizeMax );
    Abc_Print( -2, "\t-L file : the log file name [default = %s]\n",  pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-r      : toggles dynamic variable reordering [default = %s]\n", fReorder? "yes": "no" );
    Abc_Print( -2, "\t-o      : toggles reverse variable ordering [default = %s]\n", fReverse? "yes": "no" );
    Abc_Print( -2, "\t-d      : toggles dual-rail collapsing mode [default = %s]\n", fDualRail? "yes": "no" );
    Abc_Print( -2, "\t-x      : toggles dumping file \"order.txt\" with variable order [default = %s]\n", fDumpOrder? "yes": "no" );
    Abc_Print( -2, "\t-v      : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSatClp( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pNtkRes;
    int nCubeLim   =        0;
    int nBTLimit   =  1000000;
    int nCostMax   = 20000000;
    int fCanon     = 0;
    int fReverse   = 0;
    int fCnfShared = 0;
    int fVerbose   = 0;
    int c;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CLZcrsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCubeLim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCubeLim < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimit < 0 )
                goto usage;
            break;
        case 'Z':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Z\" should be followed by an integer.\n" );
                goto usage;
            }
            nCostMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCostMax < 0 )
                goto usage;
            break;
        case 'c':
            fCanon ^= 1;
            break;
        case 'r':
            fReverse ^= 1;
            break;
        case 's':
            fCnfShared ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsLogic(pNtk) && !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Can only collapse a logic network or an AIG.\n" );
        return 1;
    }

    // get the new network
    if ( Abc_NtkIsStrash(pNtk) )
        pNtkRes = Abc_NtkCollapseSat( pNtk, nCubeLim, nBTLimit, nCostMax, fCanon, fReverse, fCnfShared, fVerbose );
    else
    {
        pNtk = Abc_NtkStrash( pNtk, 0, 0, 0 );
        pNtkRes = Abc_NtkCollapseSat( pNtk, nCubeLim, nBTLimit, nCostMax, fCanon, fReverse, fCnfShared, fVerbose );
        Abc_NtkDelete( pNtk );
    }
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Collapsing has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: satclp [-CLZ num] [-crsvh]\n" );
    Abc_Print( -2, "\t         performs SAT based collapsing\n" );
    Abc_Print( -2, "\t-C num : the limit on the SOP size of one output [default = %d]\n",              nCubeLim );
    Abc_Print( -2, "\t-L num : the limit on the number of conflicts in one SAT call [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-Z num : the limit on the cost of the largest output [default = %d]\n",          nCostMax );
    Abc_Print( -2, "\t-c     : toggles using canonical ISOP computation [default = %s]\n",             fCanon? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggles using reverse veriable ordering [default = %s]\n",              fReverse? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggles shared CNF computation (non-canonical only) [default = %s]\n",  fCnfShared? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",                 fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandStrash( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    Abc_Obj_t * pObj;
    int c;
    int fAllNodes;
    int fRecord;
    int fCleanup;
    int fComplOuts;
    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fAllNodes = 0;
    fCleanup  = 1;
    fRecord   = 0;
    fComplOuts= 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "acrih" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fAllNodes ^= 1;
            break;
        case 'c':
            fCleanup ^= 1;
            break;
        case 'r':
            fRecord ^= 1;
            break;
        case 'i':
            fComplOuts ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // get the new network
    pNtkRes = Abc_NtkStrash( pNtk, fAllNodes, fCleanup, fRecord );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Strashing has failed.\n" );
        return 1;
    }
    if ( fComplOuts )
    Abc_NtkForEachPo( pNtkRes, pObj, c )
        Abc_ObjXorFaninC( pObj, 0 );
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: strash [-acrih]\n" );
    Abc_Print( -2, "\t        transforms combinational logic into an AIG\n" );
    Abc_Print( -2, "\t-a    : toggles between using all nodes and DFS nodes [default = %s]\n", fAllNodes? "all": "DFS" );
    Abc_Print( -2, "\t-c    : toggles cleanup to remove the dangling AIG nodes [default = %s]\n", fCleanup? "all": "DFS" );
    Abc_Print( -2, "\t-r    : toggles using the record of AIG subgraphs [default = %s]\n", fRecord? "yes": "no" );
    Abc_Print( -2, "\t-i    : toggles complementing the POs of the AIG [default = %s]\n", fComplOuts? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBalance( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes, * pNtkTemp;
    int c;
    int fDuplicate;
    int fSelective;
    int fUpdateLevel;
    int fExor;
    int fVerbose;
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    fDuplicate   = 0;
    fSelective   = 0;
    fUpdateLevel = 1;
    fExor        = 0;
    fVerbose     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ldsxvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'd':
            fDuplicate ^= 1;
            break;
        case 's':
            fSelective ^= 1;
            break;
        case 'x':
            fExor ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    // get the new network
    if ( Abc_NtkIsStrash(pNtk) )
    {
        if ( fExor )
            pNtkRes = Abc_NtkBalanceExor( pNtk, fUpdateLevel, fVerbose );
        else
            pNtkRes = Abc_NtkBalance( pNtk, fDuplicate, fSelective, fUpdateLevel );
    }
    else
    {
        pNtkTemp = Abc_NtkStrash( pNtk, 0, 0, 0 );
        if ( pNtkTemp == NULL )
        {
            Abc_Print( -1, "Strashing before balancing has failed.\n" );
            return 1;
        }
        if ( fExor )
            pNtkRes = Abc_NtkBalanceExor( pNtkTemp, fUpdateLevel, fVerbose );
        else
            pNtkRes = Abc_NtkBalance( pNtkTemp, fDuplicate, fSelective, fUpdateLevel );
        Abc_NtkDelete( pNtkTemp );
    }

    // check if balancing worked
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Balancing has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: balance [-ldsxvh]\n" );
    Abc_Print( -2, "\t        transforms the current network into a well-balanced AIG\n" );
    Abc_Print( -2, "\t-l    : toggle minimizing the number of levels [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-d    : toggle duplication of logic [default = %s]\n", fDuplicate? "yes": "no" );
    Abc_Print( -2, "\t-s    : toggle duplication on the critical paths [default = %s]\n", fSelective? "yes": "no" );
    Abc_Print( -2, "\t-x    : toggle balancing multi-input EXORs [default = %s]\n", fExor? "yes": "no" );
    Abc_Print( -2, "\t-v    : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMuxStruct( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fVerbose;

    extern Abc_Ntk_t * Abc_NtkMuxRestructure( Abc_Ntk_t * pNtk, int fVerbose );
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    fVerbose     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    // get the new network
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Does not work for a logic network.\n" );
        return 1;
    }
    // check if balancing worked
//    pNtkRes = Abc_NtkMuxRestructure( pNtk, fVerbose );
    pNtkRes = NULL;
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "MUX restructuring has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: mux_struct [-vh]\n" );
    Abc_Print( -2, "\t        performs MUX restructuring of the current network\n" );
    Abc_Print( -2, "\t-v    : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMulti( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int nThresh, nFaninMax, c;
    int fCnf;
    int fMulti;
    int fSimple;
    int fFactor;
    extern Abc_Ntk_t * Abc_NtkMulti( Abc_Ntk_t * pNtk, int nThresh, int nFaninMax, int fCnf, int fMulti, int fSimple, int fFactor );

    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    nThresh   =  1;
    nFaninMax = 20;
    fCnf      =  0;
    fMulti    =  1;
    fSimple   =  0;
    fFactor   =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "TFmcsfh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nThresh = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nThresh < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFaninMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFaninMax < 0 )
                goto usage;
            break;
        case 'c':
            fCnf ^= 1;
            break;
        case 'm':
            fMulti ^= 1;
            break;
        case 's':
            fSimple ^= 1;
            break;
        case 'f':
            fFactor ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Cannot renode a network that is not an AIG (run \"strash\").\n" );
        return 1;
    }

    // get the new network
    pNtkRes = Abc_NtkMulti( pNtk, nThresh, nFaninMax, fCnf, fMulti, fSimple, fFactor );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Renoding has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: multi [-TF <num>] [-msfch]\n" );
    Abc_Print( -2, "\t          transforms an AIG into a logic network by creating larger nodes\n" );
    Abc_Print( -2, "\t-F <num>: the maximum fanin size after renoding [default = %d]\n", nFaninMax );
    Abc_Print( -2, "\t-T <num>: the threshold for AIG node duplication [default = %d]\n", nThresh );
    Abc_Print( -2, "\t          (an AIG node is the root of a new node after renoding\n" );
    Abc_Print( -2, "\t          if this leads to duplication of no more than %d AIG nodes,\n", nThresh );
    Abc_Print( -2, "\t          that is, if [(numFanouts(Node)-1) * size(MFFC(Node))] <= %d)\n", nThresh );
    Abc_Print( -2, "\t-m      : creates multi-input AND graph [default = %s]\n", fMulti? "yes": "no" );
    Abc_Print( -2, "\t-s      : creates a simple AIG (no renoding) [default = %s]\n", fSimple? "yes": "no" );
    Abc_Print( -2, "\t-f      : creates a factor-cut network [default = %s]\n", fFactor? "yes": "no" );
    Abc_Print( -2, "\t-c      : performs renoding to derive the CNF [default = %s]\n", fCnf? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRenode( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int nLutSize, nCutsMax, c;
    int nFlowIters, nAreaIters;
    int fArea;
    int fUseBdds;
    int fUseSops;
    int fUseCnfs;
    int fUseMv;
    int fVerbose;
    extern Abc_Ntk_t * Abc_NtkRenode( Abc_Ntk_t * pNtk, int nLutSize, int nCutsMax, int nFlowIters, int nAreaIters, int fArea, int fUseBdds, int fUseSops, int fUseCnfs, int fUseMv, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    nLutSize   =  8;
    nCutsMax   =  4;
    nFlowIters =  1;
    nAreaIters =  1;
    fArea      =  0;
    fUseBdds   =  0;
    fUseSops   =  0;
    fUseCnfs   =  0;
    fUseMv     =  0;
    fVerbose   =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCFAabscivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutsMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nFlowIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFlowIters < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nAreaIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nAreaIters < 0 )
                goto usage;
            break;
        case 'a':
            fArea ^= 1;
            break;
        case 'b':
            fUseBdds ^= 1;
            break;
        case 's':
            fUseSops ^= 1;
            break;
        case 'c':
            fUseCnfs ^= 1;
            break;
        case 'i':
            fUseMv ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( fUseBdds + fUseSops + fUseCnfs + fUseMv > 1 )
    {
        Abc_Print( -1, "Cannot optimize two parameters at the same time.\n" );
        return 1;
    }

    if ( nLutSize < 2 || nLutSize > IF_MAX_FUNC_LUTSIZE )
    {
        Abc_Print( -1, "Incorrect LUT size (%d).\n", nLutSize );
        return 1;
    }

    if ( nCutsMax < 1 || nCutsMax >= (1<<12) )
    {
        Abc_Print( -1, "Incorrect number of cuts.\n" );
        return 1;
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Cannot renode a network that is not an AIG (run \"strash\").\n" );
        return 1;
    }

    // get the new network
    pNtkRes = Abc_NtkRenode( pNtk, nLutSize, nCutsMax, nFlowIters, nAreaIters, fArea, fUseBdds, fUseSops, fUseCnfs, fUseMv, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Renoding has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: renode [-KCFA <num>] [-sbciav]\n" );
    Abc_Print( -2, "\t          transforms the AIG into a logic network with larger nodes\n" );
    Abc_Print( -2, "\t          while minimizing the number of FF literals of the node SOPs\n" );
    Abc_Print( -2, "\t-K <num>: the max cut size for renoding (2 < num < %d) [default = %d]\n", IF_MAX_FUNC_LUTSIZE+1, nLutSize );
    Abc_Print( -2, "\t-C <num>: the max number of cuts used at a node (0 < num < 2^12) [default = %d]\n", nCutsMax );
    Abc_Print( -2, "\t-F <num>: the number of area flow recovery iterations (num >= 0) [default = %d]\n", nFlowIters );
    Abc_Print( -2, "\t-A <num>: the number of exact area recovery iterations (num >= 0) [default = %d]\n", nAreaIters );
    Abc_Print( -2, "\t-s      : toggles minimizing SOP cubes instead of FF lits [default = %s]\n", fUseSops? "yes": "no" );
    Abc_Print( -2, "\t-b      : toggles minimizing BDD nodes instead of FF lits [default = %s]\n", fUseBdds? "yes": "no" );
    Abc_Print( -2, "\t-c      : toggles minimizing CNF clauses instead of FF lits [default = %s]\n", fUseCnfs? "yes": "no" );
    Abc_Print( -2, "\t-i      : toggles minimizing MV-SOP instead of FF lits [default = %s]\n", fUseMv? "yes": "no" );
    Abc_Print( -2, "\t-a      : toggles area-oriented mapping [default = %s]\n", fArea? "yes": "no" );
    Abc_Print( -2, "\t-v      : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCleanup( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fCleanupPis;
    int fCleanupPos;
    int fVerbose;

    extern Abc_Ntk_t * Abc_NtkDarCleanupAig( Abc_Ntk_t * pNtk, int fCleanupPis, int fCleanupPos, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    fCleanupPis = 1;
    fCleanupPos = 1;
    fVerbose    = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "iovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'i':
            fCleanupPis ^= 1;
            break;
        case 'o':
            fCleanupPos ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsStrash(pNtk) )
    {
        if ( !fCleanupPis && !fCleanupPos )
        {
            Abc_Print( -1, "Cleanup for PIs and POs is not enabled.\n" );
            pNtkRes = Abc_NtkDup( pNtk );
        }
        else
            pNtkRes = Abc_NtkDarCleanupAig( pNtk, fCleanupPis, fCleanupPos, fVerbose );
    }
    else
    {
        Abc_NtkCleanup( pNtk, fVerbose );
        pNtkRes = Abc_NtkDup( pNtk );
    }
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Cleanup has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: cleanup [-iovh]\n" );
    Abc_Print( -2, "\t        for logic networks, removes dangling combinatinal logic\n" );
    Abc_Print( -2, "\t        for AIGs, removes PIs w/o fanout and POs driven by const-0\n" );
    Abc_Print( -2, "\t-i    : toggles removing PIs without fanout [default = %s]\n", fCleanupPis? "yes": "no" );
    Abc_Print( -2, "\t-o    : toggles removing POs with const-0 drivers [default = %s]\n", fCleanupPos? "yes": "no" );
    Abc_Print( -2, "\t-v    : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSweep( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fSingle = 0;
    int fVerbose = 0;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "svh" ) ) != EOF )
    {
        switch ( c )
        {
        case 's':
            fSingle ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "The classical (SIS-like) sweep can only be performed on a logic network.\n" );
        return 1;
    }
    // modify the current network
    if ( fSingle )
        Abc_NtkSweepBufsInvs( pNtk, fVerbose );
    else
        Abc_NtkSweep( pNtk, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: sweep [-svh]\n" );
    Abc_Print( -2, "\t        removes dangling nodes; propagates constant, buffers, inverters\n" );
    Abc_Print( -2, "\t-s    : toggle sweeping buffers/inverters only [default = %s]\n", fSingle? "yes": "no" );
    Abc_Print( -2, "\t-v    : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFastExtract( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_NtkFxPerform( Abc_Ntk_t * pNtk, int nNewNodesMax, int nLitCountMax, int fCanonDivs, int fVerbose, int fVeryVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Fxu_Data_t Params, * p = &Params;
    int c, fNewAlgo = 1;
    int nPairsLimit = 1000000000;
    // set the defaults
    Abc_NtkSetDefaultFxParams( p );
    Extra_UtilGetoptReset();
    while ( (c = Extra_UtilGetopt(argc, argv, "SDNWMPsdzcnxvwh")) != EOF )
    {
        switch (c)
        {
            case 'S':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                    goto usage;
                }
                p->nSingleMax = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( p->nSingleMax < 0 )
                    goto usage;
                break;
            case 'D':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                    goto usage;
                }
                p->nPairsMax = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( p->nPairsMax < 0 )
                    goto usage;
                break;
            case 'N':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                    goto usage;
                }
                p->nNodesExt = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( p->nNodesExt < 0 )
                    goto usage;
                break;
            case 'W':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                    goto usage;
                }
                p->WeightMin = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( p->WeightMin < 0 )
                    goto usage;
                break;
            case 'M':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                    goto usage;
                }
                p->LitCountMax = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( p->LitCountMax < 0 )
                    goto usage;
                break;
            case 'P':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                    goto usage;
                }
                nPairsLimit = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( nPairsLimit < 0 )
                    goto usage;
                break;
            case 's':
                p->fOnlyS ^= 1;
                break;
            case 'd':
                p->fOnlyD ^= 1;
                break;
            case 'z':
                p->fUse0 ^= 1;
                break;
            case 'c':
                p->fUseCompl ^= 1;
                break;
            case 'n':
                fNewAlgo ^= 1;
                break;
            case 'x':
                p->fCanonDivs ^= 1;
                break;
            case 'v':
                p->fVerbose ^= 1;
                break;
            case 'w':
                p->fVeryVerbose ^= 1;
                break;
            case 'h':
                goto usage;
                break;
            default:
                goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkNodeNum(pNtk) == 0 || Abc_NtkPiNum(pNtk) == 0 )
    {
        Abc_Print( 0, "The network does not have internal nodes.\n" );
        return 0;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Fast extract can only be applied to a logic network (run \"renode\" or \"if\").\n" );
        return 1;
    }
    if ( !Abc_NtkIsSopLogic(pNtk) )
    {
        Abc_Print( -1, "Fast extract can only be applied to a logic network with SOP local functions (run \"bdd; sop\").\n" );
        return 1;
    }
    if ( Abc_NtkGetCubePairNum(pNtk) > nPairsLimit )
    {
        Abc_Print( -1, "Cannot perform \"fx\" because the number cube pairs exceeds the limit (%d).\n", nPairsLimit );
        return 1;
    }

    // the nodes to be merged are linked into the special linked list
    if ( fNewAlgo )
        Abc_NtkFxPerform( pNtk, p->nNodesExt, p->LitCountMax, p->fCanonDivs, p->fVerbose, p->fVeryVerbose );
    else
        Abc_NtkFastExtract( pNtk, p );
    Abc_NtkFxuFreeInfo( p );
    return 0;

usage:
    Abc_Print( -2, "usage: fx [-SDNWMP <num>] [-sdzcnxvwh]\n");
    Abc_Print( -2, "\t           performs unate fast extract on the current network\n");
    Abc_Print( -2, "\t-S <num> : max number of single-cube divisors to consider [default = %d]\n", p->nSingleMax );
    Abc_Print( -2, "\t-D <num> : max number of double-cube divisors to consider [default = %d]\n", p->nPairsMax );
    Abc_Print( -2, "\t-N <num> : max number of divisors to extract during this run [default = %d]\n", p->nNodesExt );
    Abc_Print( -2, "\t-W <num> : lower bound on the weight of divisors to extract [default = %d]\n", p->WeightMin );
    Abc_Print( -2, "\t-M <num> : upper bound on literal count of divisors to extract [default = %d]\n", p->LitCountMax );
    Abc_Print( -2, "\t-P <num> : skip \"fx\" if cube pair count exceeds this limit [default = %d]\n", nPairsLimit );
    Abc_Print( -2, "\t-s       : use only single-cube divisors [default = %s]\n", p->fOnlyS? "yes": "no" );
    Abc_Print( -2, "\t-d       : use only double-cube divisors [default = %s]\n", p->fOnlyD? "yes": "no" );
    Abc_Print( -2, "\t-z       : use zero-weight divisors [default = %s]\n", p->fUse0? "yes": "no" );
    Abc_Print( -2, "\t-c       : use complement in the binary case [default = %s]\n", p->fUseCompl? "yes": "no" );
    Abc_Print( -2, "\t-n       : use new implementation of fast extract [default = %s]\n", fNewAlgo? "yes": "no" );
    Abc_Print( -2, "\t-x       : use only canonical divisors (AND, XOR, MUX) [default = %s]\n", p->fCanonDivs? "yes": "no" );
    Abc_Print( -2, "\t-v       : print verbose information [default = %s]\n", p->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : print additional information [default = %s]\n", p->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
static int Abc_CommandFxch( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_NtkFxchPerform( Abc_Ntk_t * pNtk, int nMaxDivExt, int fVerbose, int fVeryVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);

    int c,
        nMaxDivExt = 0,
        fVerbose = 0,
        fVeryVerbose = 0;

    Extra_UtilGetoptReset();
    while ( (c = Extra_UtilGetopt(argc, argv, "Nvwh")) != EOF )
    {
        switch (c)
        {
            case 'N':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                    goto usage;
                }
                nMaxDivExt = atoi( argv[globalUtilOptind] );
                globalUtilOptind++;

                if ( nMaxDivExt < 0 )
                    goto usage;
                break;

            case 'v':
                fVerbose ^= 1;
                break;

            case 'w':
                fVeryVerbose ^= 1;
                break;

            case 'h':
                goto usage;
                break;

            default:
                goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkNodeNum( pNtk ) == 0 )
    {
        Abc_Print( -1, "The network does not have internal nodes.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic( pNtk ) )
    {
        Abc_Print( -1, "Fast extract can only be applied to a logic network (run \"renode\" or \"if\").\n" );
        return 1;
    }
    if ( !Abc_NtkIsSopLogic( pNtk ) )
    {
        Abc_Print( -1, "Fast extract can only be applied to a logic network with SOP local functions (run \"bdd; sop\").\n" );
        return 1;
    }

    Abc_NtkFxchPerform( pNtk, nMaxDivExt, fVerbose, fVeryVerbose );

    return 0;

usage:
    Abc_Print( -2, "usage: fxch [-N <num>] [-svwh]\n");
    Abc_Print( -2, "\t           performs fast extract with cube hashing on the current network\n");
    Abc_Print( -2, "\t-N <num> : max number of divisors to extract during this run [default = unused]\n" );
    Abc_Print( -2, "\t-v       : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : print additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t           This command was contributed by Bruno Schmitt from UFRGS in May 2016.\n" );
    Abc_Print( -2, "\t           The author can be contacted as boschmitt at inf.ufrgs.br\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandEliminate( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int ElimValue;
    int nMaxSize;
    int nIterMax;
    int fGreedy;
    int fReverse;
    int fSpecial;
    int fVerbose;
    int c;
    extern int Abc_NtkEliminate( Abc_Ntk_t * pNtk, int nMaxSize, int fReverse, int fVerbose );
    extern int Abc_NtkEliminate1( Abc_Ntk_t * pNtk, int ElimValue, int nMaxSize, int nIterMax, int fReverse, int fVerbose );
    extern int Abc_NtkEliminateSpecial( Abc_Ntk_t * pNtk, int nMaxSize, int fVerbose );

    // set the defaults
    ElimValue = -1;
    nMaxSize  = 12;
    nIterMax  =  1;
    fGreedy   =  0;
    fReverse  =  0;
    fSpecial  =  0;
    fVerbose  =  0;
    Extra_UtilGetoptReset();
    while ( (c = Extra_UtilGetopt(argc, argv, "VNIgrsvh")) != EOF )
    {
        switch (c)
        {
            case 'V':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer that is -1 or larger.\n" );
                    goto usage;
                }
                ElimValue = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( ElimValue < -1 )
                    goto usage;
                break;
            case 'N':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer.\n" );
                    goto usage;
                }
                nMaxSize = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( nMaxSize <= 0 )
                    goto usage;
                break;
            case 'I':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                    goto usage;
                }
                nIterMax = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( nIterMax <= 0 )
                    goto usage;
                break;
            case 'g':
                fGreedy ^= 1;
                break;
            case 'r':
                fReverse ^= 1;
                break;
            case 's':
                fSpecial ^= 1;
                break;
            case 'v':
                fVerbose ^= 1;
                break;
            case 'h':
                goto usage;
                break;
            default:
                goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( Abc_NtkNodeNum(pNtk) == 0 )
    {
        Abc_Print( -1, "The network does not have internal nodes.\n" );
        return 1;
    }

    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network (run \"renode\" or \"if\").\n" );
        return 1;
    }

    if ( fSpecial )
        Abc_NtkEliminateSpecial( pNtk, 1000, fVerbose );
    else if ( fGreedy )
        Abc_NtkEliminate( pNtk, nMaxSize, fReverse, fVerbose );
    else
        Abc_NtkEliminate1( pNtk, ElimValue, nMaxSize, nIterMax, fReverse, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: eliminate [-VNI <num>] [-grsvh]\n");
    Abc_Print( -2, "\t           traditional \"eliminate -1\", which collapses the node into its fanout\n");
    Abc_Print( -2, "\t           if the node's variable appears in the fanout's factored form only once\n");
    Abc_Print( -2, "\t-V <num> : the \"value\" parameter used by \"eliminate\" in SIS [default = %d]\n", ElimValue );
    Abc_Print( -2, "\t-N <num> : the maximum node support after collapsing [default = %d]\n", nMaxSize );
    Abc_Print( -2, "\t-I <num> : the maximum number of iterations [default = %d]\n", nIterMax );
    Abc_Print( -2, "\t-g       : toggle using greedy eliminate (without \"value\") [default = %s]\n", fGreedy? "yes": "no" );
    Abc_Print( -2, "\t-r       : use the reverse topological order [default = %s]\n", fReverse? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggle eliminating similar nodes [default = %s]\n", fSpecial? "yes": "no" );
    Abc_Print( -2, "\t-v       : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDisjoint( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes, * pNtkNew;
    int fGlobal, fRecursive, fVerbose, fPrint, fShort, c;

    extern Abc_Ntk_t * Abc_NtkDsdGlobal( Abc_Ntk_t * pNtk, int fVerbose, int fPrint, int fShort );
    extern int         Abc_NtkDsdLocal( Abc_Ntk_t * pNtk, int fVerbose, int fRecursive );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fGlobal    = 1;
    fRecursive = 0;
    fVerbose   = 0;
    fPrint     = 0;
    fShort     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "grvpsh" ) ) != EOF )
    {
        switch ( c )
        {
            case 'g':
                fGlobal ^= 1;
                break;
            case 'r':
                fRecursive ^= 1;
                break;
            case 'v':
                fVerbose ^= 1;
                break;
            case 'p':
                fPrint ^= 1;
                break;
            case 's':
                fShort ^= 1;
                break;
            case 'h':
                goto usage;
                break;
            default:
                goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( fGlobal )
    {
//        Abc_Print( 0, "Performing DSD of global functions of the network.\n" );
        // get the new network
        if ( !Abc_NtkIsStrash(pNtk) )
        {
            pNtkNew = Abc_NtkStrash( pNtk, 0, 0, 0 );
            pNtkRes = Abc_NtkDsdGlobal( pNtkNew, fVerbose, fPrint, fShort );
            Abc_NtkDelete( pNtkNew );
        }
        else
        {
            pNtkRes = Abc_NtkDsdGlobal( pNtk, fVerbose, fPrint, fShort );
        }
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "Global DSD has failed.\n" );
            return 1;
        }
        // replace the current network
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    }
    else if ( fRecursive )
    {
        if ( !Abc_NtkIsBddLogic( pNtk ) )
        {
            Abc_Print( -1, "This command is only applicable to logic BDD networks.\n" );
            return 1;
        }
        if ( fVerbose )
            Abc_Print( 1, "Performing recursive DSD and MUX decomposition of local functions.\n" );
        if ( !Abc_NtkDsdLocal( pNtk, fVerbose, fRecursive ) )
            Abc_Print( -1, "Recursive DSD has failed.\n" );
    }
    else
    {
        if ( !Abc_NtkIsBddLogic( pNtk ) )
        {
            Abc_Print( -1, "This command is only applicable to logic BDD networks (run \"bdd\").\n" );
            return 1;
        }
        if ( fVerbose )
            Abc_Print( 1, "Performing simple non-recursive DSD of local functions.\n" );
        if ( !Abc_NtkDsdLocal( pNtk, fVerbose, fRecursive ) )
            Abc_Print( -1, "Simple DSD of local functions has failed.\n" );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: dsd [-grvpsh]\n" );
    Abc_Print( -2, "\t     decomposes the network using disjoint-support decomposition\n" );
    Abc_Print( -2, "\t-g     : toggle DSD of global and local functions [default = %s]\n", fGlobal? "global": "local" );
    Abc_Print( -2, "\t-r     : toggle recursive DSD/MUX and simple DSD [default = %s]\n", fRecursive? "recursive DSD/MUX": "simple DSD" );
    Abc_Print( -2, "\t-v     : prints DSD statistics and runtime [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-p     : prints DSD structure to the standard output [default = %s]\n", fPrint? "yes": "no" );
    Abc_Print( -2, "\t-s     : use short PI names when printing DSD structure [default = %s]\n", fShort? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSparsify( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkSparsify( Abc_Ntk_t * pNtk, int nPerc, int fVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pNtkNew;
    int nPerc, fVerbose, c;
    // set defaults
    nPerc      = 10;
    fVerbose   =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nvh" ) ) != EOF )
    {
        switch ( c )
        {
            case 'N':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                    goto usage;
                }
                nPerc = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( nPerc < 1 || nPerc > 100 )
                    goto usage;
                break;
            case 'v':
                fVerbose ^= 1;
                break;
            case 'h':
                goto usage;
                break;
            default:
                goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsBddLogic( pNtk ) )
    {
        Abc_Print( -1, "This command is only applicable to logic BDD networks (run \"bdd\").\n" );
        return 1;
    }
    if ( Abc_NtkCiNum(pNtk) > 16 )
    {
        Abc_Print( -1, "The number of primary inputs is more than 16.\n" );
        return 1;
    }
    pNtkNew = Abc_NtkSparsify( pNtk, nPerc, fVerbose );
    if ( pNtkNew == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkNew );
    return 0;

usage:
    Abc_Print( -2, "usage: sparsify [-N num] [-vh]\n" );
    Abc_Print( -2, "\t           creates incompletely-specified function\n" );
    Abc_Print( -2, "\t-N <num> : the percentage of on-set and off-set minterms (1 <= num <= 100) [default = %d]\n", nPerc );
    Abc_Print( -2, "\t-v       : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandLutpack( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Lpk_Par_t Pars, * pPars = &Pars;
    int c;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    memset( pPars, 0, sizeof(Lpk_Par_t) );
    pPars->nLutsMax     =  4; // (N) the maximum number of LUTs in the structure
    pPars->nLutsOver    =  3; // (Q) the maximum number of LUTs not in the MFFC
    pPars->nVarsShared  =  0; // (S) the maximum number of shared variables (crossbars)
    pPars->nGrowthLevel =  0; // (L) the maximum number of increased levels
    pPars->fSatur       =  1;
    pPars->fZeroCost    =  0;
    pPars->fFirst       =  0;
    pPars->fOldAlgo     =  0;
    pPars->fVerbose     =  0;
    pPars->fVeryVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NQSLszfovwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutsMax < 2 || pPars->nLutsMax > 16 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLutsOver = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutsOver < 0 || pPars->nLutsOver > 8 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nVarsShared = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVarsShared < 0 || pPars->nVarsShared > 4 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nGrowthLevel = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nGrowthLevel < 0 || pPars->nGrowthLevel > ABC_INFINITY )
                goto usage;
            break;
        case 's':
            pPars->fSatur ^= 1;
            break;
        case 'z':
            pPars->fZeroCost ^= 1;
            break;
        case 'f':
            pPars->fFirst ^= 1;
            break;
        case 'o':
            pPars->fOldAlgo ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
        return 1;
    }
    if ( pPars->nVarsShared < 0 || pPars->nVarsShared > 3 )
    {
        Abc_Print( -1, "The number of shared variables (%d) is not in the range 0 <= S <= 3.\n", pPars->nVarsShared );
        return 1;
    }

    // modify the current network
    if ( !Lpk_Resynthesize( pNtk, pPars ) )
    {
        Abc_Print( -1, "Resynthesis has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: lutpack [-NQSL <num>] [-szfovwh]\n" );
    Abc_Print( -2, "\t           performs \"rewriting\" for LUT network;\n" );
    Abc_Print( -2, "\t           determines LUT size as the max fanin count of a node;\n" );
    Abc_Print( -2, "\t           if the network is not LUT-mapped, packs it into 6-LUTs\n" );
    Abc_Print( -2, "\t           (there is another command for resynthesis after LUT mapping, \"mfs2\")\n" );
    Abc_Print( -2, "\t-N <num> : the max number of LUTs in the structure (2 <= num) [default = %d]\n", pPars->nLutsMax );
    Abc_Print( -2, "\t-Q <num> : the max number of LUTs not in MFFC (0 <= num) [default = %d]\n", pPars->nLutsOver );
    Abc_Print( -2, "\t-S <num> : the max number of LUT inputs shared (0 <= num <= 3) [default = %d]\n", pPars->nVarsShared );
    Abc_Print( -2, "\t-L <num> : max level increase after resynthesis (0 <= num) [default = %d]\n", pPars->nGrowthLevel );
    Abc_Print( -2, "\t-s       : toggle iteration till saturation [default = %s]\n", pPars->fSatur? "yes": "no" );
    Abc_Print( -2, "\t-z       : toggle zero-cost replacements [default = %s]\n", pPars->fZeroCost? "yes": "no" );
    Abc_Print( -2, "\t-f       : toggle using only first node and first cut [default = %s]\n", pPars->fFirst? "yes": "no" );
    Abc_Print( -2, "\t-o       : toggle using old implementation [default = %s]\n", pPars->fOldAlgo? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle detailed printout of decomposed functions [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandLutmin( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkLutmin( Abc_Ntk_t * pNtk, int nLutSize, int fReorder, int fVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pNtkRes;
    int c;
    int nLutSize = 4;
    int fReorder = 1;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Krvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'r':
            fReorder ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    // modify the current network
    pNtkRes = Abc_NtkLutmin( pNtk, nLutSize, fReorder, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "The command has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: lutmin [-K <num>] [-rvh]\n" );
    Abc_Print( -2, "\t           perform FPGA mapping while minimizing the LUT count\n" );
    Abc_Print( -2, "\t           as described in the paper T. Sasao and A. Mishchenko:\n" );
    Abc_Print( -2, "\t           \"On the number of LUTs to implement logic functions\".\n" );
    Abc_Print( -2, "\t-K <num> : the LUT size to use for the mapping (2 <= num) [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-r       : toggle using BDD variable reordering [default = %s]\n", fReorder? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

#if 0

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandImfs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Res_Par_t Pars, * pPars = &Pars;
    int c;

    // set defaults
    pPars->nWindow      = 62;
    pPars->nCands       =  5;
    pPars->nSimWords    =  4;
    pPars->nGrowthLevel =  0;
    pPars->fArea        =  0;
    pPars->fVerbose     =  0;
    pPars->fVeryVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WSCLavwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWindow = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWindow < 1 || pPars->nWindow > 99 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSimWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSimWords < 1 || pPars->nSimWords > 256 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nCands = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCands < 0 || pPars->nCands > ABC_INFINITY )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nGrowthLevel = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nGrowthLevel < 0 || pPars->nGrowthLevel > ABC_INFINITY )
                goto usage;
            break;
        case 'a':
            pPars->fArea ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
        return 1;
    }

    // modify the current network
    if ( !Abc_NtkResynthesize( pNtk, pPars ) )
    {
        Abc_Print( -1, "Resynthesis has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: imfs [-W <NM>] [-LCS <num>] [-avwh]\n" );
    Abc_Print( -2, "\t           performs resubstitution-based resynthesis with interpolation\n" );
    Abc_Print( -2, "\t           (there is another command for resynthesis after LUT mapping, \"lutpack\")\n" );
    Abc_Print( -2, "\t-W <NM>  : fanin/fanout levels (NxM) of the window (00 <= NM <= 99) [default = %d%d]\n", pPars->nWindow/10, pPars->nWindow%10 );
    Abc_Print( -2, "\t-C <num> : the max number of resub candidates (1 <= n) [default = %d]\n", pPars->nCands );
    Abc_Print( -2, "\t-S <num> : the number of simulation words (1 <= n <= 256) [default = %d]\n", pPars->nSimWords );
    Abc_Print( -2, "\t-L <num> : the max increase in node level after resynthesis (0 <= num) [default = %d]\n", pPars->nGrowthLevel );
    Abc_Print( -2, "\t-a       : toggle optimization for area only [default = %s]\n", pPars->fArea? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printout subgraph statistics [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

#endif

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMfs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Mfs_Par_t Pars, * pPars = &Pars;
    int c;
    // set defaults
    Abc_NtkMfsParsDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WFDMLCdraestpgcvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWinTfoLevs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWinTfoLevs < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFanoutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFanoutsMax < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nDepthMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nDepthMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWinMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWinMax < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nGrowthLevel = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nGrowthLevel < 0 || pPars->nGrowthLevel > ABC_INFINITY )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'd':
            pPars->fRrOnly ^= 1;
            break;
        case 'r':
            pPars->fResub ^= 1;
            break;
        case 'a':
            pPars->fArea ^= 1;
            break;
        case 'e':
            pPars->fMoreEffort ^= 1;
            break;
        case 's':
            pPars->fSwapEdge ^= 1;
            break;
        case 't':
            pPars->fOneHotness ^= 1;
            break;
        case 'p':
            pPars->fPower ^= 1;
            break;
        case 'g':
            pPars->fGiaSat ^= 1;
            break;
        case 'c':
            pPars->fPrintCares ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
        return 1;
    }

    // modify the current network
    if ( !Abc_NtkMfs( pNtk, pPars ) )
    {
        Abc_Print( -1, "Resynthesis has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: mfs [-WFDMLC <num>] [-draestpgcvh]\n" );
    Abc_Print( -2, "\t           performs don't-care-based optimization of logic networks\n" );
    Abc_Print( -2, "\t-W <num> : the number of levels in the TFO cone (0 <= num) [default = %d]\n", pPars->nWinTfoLevs );
    Abc_Print( -2, "\t-F <num> : the max number of fanouts to skip (1 <= num) [default = %d]\n", pPars->nFanoutsMax );
    Abc_Print( -2, "\t-D <num> : the max depth nodes to try (0 = no limit) [default = %d]\n", pPars->nDepthMax );
    Abc_Print( -2, "\t-M <num> : the max node count of windows to consider (0 = no limit) [default = %d]\n", pPars->nWinMax );
    Abc_Print( -2, "\t-L <num> : the max increase in node level after resynthesis (0 <= num) [default = %d]\n", pPars->nGrowthLevel );
    Abc_Print( -2, "\t-C <num> : the max number of conflicts in one SAT run (0 = no limit) [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-d       : toggle performing redundancy removal [default = %s]\n", pPars->fRrOnly? "yes": "no" );
    Abc_Print( -2, "\t-r       : toggle resubstitution and dc-minimization [default = %s]\n", pPars->fResub? "resub": "dc-min" );
    Abc_Print( -2, "\t-a       : toggle minimizing area or area+edges [default = %s]\n", pPars->fArea? "area": "area+edges" );
    Abc_Print( -2, "\t-e       : toggle high-effort resubstitution [default = %s]\n", pPars->fMoreEffort? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggle evaluation of edge swapping [default = %s]\n", pPars->fSwapEdge? "yes": "no" );
    Abc_Print( -2, "\t-t       : toggle using artificial one-hotness conditions [default = %s]\n", pPars->fOneHotness? "yes": "no" );
    Abc_Print( -2, "\t-p       : toggle power-aware optimization [default = %s]\n", pPars->fPower? "yes": "no" );
    Abc_Print( -2, "\t-g       : toggle using new SAT solver [default = %s]\n", pPars->fGiaSat? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggle printing careset at each node [default = %s]\n", pPars->fPrintCares? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing detailed stats for each node [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMfs2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_NtkPerformMfs( Abc_Ntk_t * pNtk, Sfm_Par_t * pPars );
    extern int Abc_NtkMfsAfterICheck( Abc_Ntk_t * p, int nFrames, int nFramesAdd, Vec_Int_t * vFlops, Sfm_Par_t * pPars );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Sfm_Par_t Pars, * pPars = &Pars;
    int c, fIndDCs = 0, fUseAllFfs = 0, nFramesAdd = 0;
    // set defaults
    Sfm_ParSetDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WFDMLCZNIdaeijlvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTfoLevMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTfoLevMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFanoutMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFanoutMax < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nDepthMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nDepthMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWinSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWinSizeMax < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nGrowthLevel = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nGrowthLevel < -ABC_INFINITY || pPars->nGrowthLevel > ABC_INFINITY )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'Z':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Z\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFirstFixed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFirstFixed < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nNodesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNodesMax < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nFramesAdd = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFramesAdd < 0 )
                goto usage;
            break;
        case 'd':
            pPars->fRrOnly ^= 1;
            break;
        case 'a':
            pPars->fArea ^= 1;
            break;
        case 'e':
            pPars->fMoreEffort ^= 1;
            break;
        case 'i':
            fIndDCs ^= 1;
            break;
        case 'j':
            fUseAllFfs ^= 1;
            break;
        case 'l':
            pPars->fUseDcs ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
        return 1;
    }
    if ( fIndDCs )
    {
        if ( fUseAllFfs )
        {
            pAbc->nIndFrames = 1;
            Vec_IntFreeP( &pAbc->vIndFlops );
            pAbc->vIndFlops = Vec_IntAlloc( Abc_NtkLatchNum(pNtk) );
            Vec_IntFill( pAbc->vIndFlops, Abc_NtkLatchNum(pNtk), 1 );
        }
        if ( pAbc->nIndFrames <= 0 )
        {
            Abc_Print( -1, "The number of k-inductive frames is not specified.\n" );
            return 0;
        }
        if ( pAbc->vIndFlops == NULL )
        {
            Abc_Print( -1, "The set of k-inductive flops is not specified.\n" );
            return 0;
        }
        if ( Vec_IntSize(pAbc->vIndFlops) != Abc_NtkLatchNum(pNtk) )
        {
            Abc_Print( -1, "The saved flop count (%d) does not match that of the current network (%d).\n",
                Vec_IntSize(pAbc->vIndFlops), Abc_NtkLatchNum(pNtk) );
            return 0;
        }
        // modify the current network
        if ( !Abc_NtkMfsAfterICheck( pNtk, pAbc->nIndFrames, nFramesAdd, pAbc->vIndFlops, pPars ) )
        {
            Abc_Print( -1, "Resynthesis has failed.\n" );
            return 1;
        }
        if ( fUseAllFfs )
        {
            pAbc->nIndFrames = 0;
            Vec_IntFreeP( &pAbc->vIndFlops );
        }
    }
    else
    {
        // modify the current network
        if ( !Abc_NtkPerformMfs( pNtk, pPars ) )
        {
            Abc_Print( -1, "Resynthesis has failed.\n" );
            return 1;
        }
    }
    return 0;

usage:
    Abc_Print( -2, "usage: mfs2 [-WFDMLCZNI <num>] [-daeijlvwh]\n" );
    Abc_Print( -2, "\t           performs don't-care-based optimization of logic networks\n" );
    Abc_Print( -2, "\t-W <num> : the number of levels in the TFO cone (0 <= num) [default = %d]\n",             pPars->nTfoLevMax );
    Abc_Print( -2, "\t-F <num> : the max number of fanouts to skip (1 <= num) [default = %d]\n",                pPars->nFanoutMax );
    Abc_Print( -2, "\t-D <num> : the max depth nodes to try (0 = no limit) [default = %d]\n",                   pPars->nDepthMax );
    Abc_Print( -2, "\t-M <num> : the max node count of windows to consider (0 = no limit) [default = %d]\n",    pPars->nWinSizeMax );
    Abc_Print( -2, "\t-L <num> : the max increase in node level after resynthesis (0 <= num) [default = %d]\n", pPars->nGrowthLevel );
    Abc_Print( -2, "\t-C <num> : the max number of conflicts in one SAT run (0 = no limit) [default = %d]\n",   pPars->nBTLimit );
    Abc_Print( -2, "\t-Z <num> : treat the first <num> logic nodes as fixed (0 = none) [default = %d]\n",       pPars->nFirstFixed );
    Abc_Print( -2, "\t-N <num> : the max number of nodes to try (0 = all) [default = %d]\n",                    pPars->nNodesMax );
    Abc_Print( -2, "\t-d       : toggle performing redundancy removal [default = %s]\n",                        pPars->fRrOnly? "yes": "no" );
    Abc_Print( -2, "\t-a       : toggle minimizing area or area+edges [default = %s]\n",                        pPars->fArea? "area": "area+edges" );
    Abc_Print( -2, "\t-e       : toggle high-effort resubstitution [default = %s]\n",                           pPars->fMoreEffort? "yes": "no" );
    Abc_Print( -2, "\t-i       : toggle using inductive don't-cares [default = %s]\n",                          fIndDCs? "yes": "no" );
    Abc_Print( -2, "\t-j       : toggle using all flops when \"-i\" is enabled [default = %s]\n",               fUseAllFfs? "yes": "no" );
    Abc_Print( -2, "\t-I       : the number of additional frames inserted [default = %d]\n",                    nFramesAdd );
    Abc_Print( -2, "\t-l       : toggle deriving don't-cares [default = %s]\n",                                 pPars->fUseDcs? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n",                        pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing detailed stats for each node [default = %s]\n",                pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMfs3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkPerformMfs3( Abc_Ntk_t * pNtk, Sfm_Par_t * pPars );
    extern void Sfm_ParSetDefault3( Sfm_Par_t * pPars );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Sfm_Par_t Pars, * pPars = &Pars; int c;
    // set defaults
    Sfm_ParSetDefault3( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IOVFKLHRMCNPWDEarmzoespdlvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTfiLevMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTfiLevMax < 1 )
            {
                Abc_Print( -1, "The number of TFI levels (switch \"-I\") should be at least 1.\n" );
                goto usage;
            }
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTfoLevMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTfoLevMax < 0 )
                goto usage;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTfiLevMax = pPars->nTfoLevMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTfiLevMax < 1 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFanoutMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFanoutMax < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nVarMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVarMax < 2 || pPars->nVarMax > 8 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMffcMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMffcMin < 0 )
                goto usage;
            break;
        case 'H':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-H\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMffcMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMffcMax < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nDecMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nDecMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWinSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWinSizeMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nNodesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNodesMax < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->iNodeOne = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->iNodeOne < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeWin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeWin < 0 || pPars->nTimeWin > 100 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->DeltaCrit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DeltaCrit < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->DelAreaRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelAreaRatio < 0 )
                goto usage;
            break;
        case 'a':
            pPars->fArea ^= 1;
            break;
        case 'r':
            pPars->fAreaRev ^= 1;
            break;
        case 'm':
            pPars->fUseAndOr ^= 1;
            break;
        case 'z':
            pPars->fZeroCost ^= 1;
            break;
        case 'o':
            pPars->fRrOnly ^= 1;
            break;
        case 'e':
            pPars->fMoreEffort ^= 1;
            break;
        case 's':
            pPars->fUseSim ^= 1;
            break;
        case 'p':
            pPars->fPrintDecs ^= 1;
            break;
        case 'd':
            pPars->fDelayVerbose ^= 1;
            break;
        case 'l':
            pPars->fLibVerbose ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsMappedLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a mapped logic network.\n" );
        return 1;
    }
    // modify the current network
    Abc_NtkPerformMfs3( pNtk, pPars );
    return 0;

usage:
    Abc_Print( -2, "usage: mfs3 [-IOVFKLHRMCNPWDE <num>] [-armzespdlvwh]\n" );
    Abc_Print( -2, "\t           performs don't-care-based optimization of mapped networks\n" );
    Abc_Print( -2, "\t-I <num> : the number of levels in the TFI cone (1 <= num) [default = %d]\n",             pPars->nTfiLevMax );
    Abc_Print( -2, "\t-O <num> : the number of levels in the TFO cone (0 <= num) [default = %d]\n",             pPars->nTfoLevMax );
    Abc_Print( -2, "\t-V <num> : the number of levels in the TFI/TFO cone (1 <= num) [default = %d]\n",         pPars->nTfiLevMax );
    Abc_Print( -2, "\t-F <num> : the max number of fanouts to skip (1 <= num) [default = %d]\n",                pPars->nFanoutMax );
    Abc_Print( -2, "\t-K <num> : the max number of variables (2 <= num <= 8 ) [default = %d]\n",                pPars->nVarMax );
    Abc_Print( -2, "\t-L <num> : the min size of max fanout-free cone (MFFC) (area-only) [default = %d]\n",     pPars->nMffcMin );
    Abc_Print( -2, "\t-H <num> : the max size of max fanout-free cone (MFFC) (area-only) [default = %d]\n",     pPars->nMffcMax );
    Abc_Print( -2, "\t-R <num> : the max number of decomposition rounds (1 <= num <= 4) [default = %d]\n",      pPars->nDecMax );
    Abc_Print( -2, "\t-M <num> : the max node count of windows to consider (0 = no limit) [default = %d]\n",    pPars->nWinSizeMax );
    Abc_Print( -2, "\t-C <num> : the max number of conflicts in one SAT run (0 = no limit) [default = %d]\n",   pPars->nBTLimit );
    Abc_Print( -2, "\t-N <num> : the max number of nodes to try (0 = all) [default = %d]\n",                    pPars->nNodesMax );
    Abc_Print( -2, "\t-P <num> : one particular node to try (0 = none) [default = %d]\n",                       pPars->iNodeOne );
    Abc_Print( -2, "\t-W <num> : size of timing window in percents (0 <= num <= 100) [default = %d]\n",         pPars->nTimeWin );
    Abc_Print( -2, "\t-D <num> : size of critical-timing delay-delta (in picoseconds) [default = %d]\n",        pPars->DeltaCrit );
    Abc_Print( -2, "\t-E <num> : delay-area tradeoff (in picoseconds per area-unit) [default = %d]\n",          pPars->DelAreaRatio );
    Abc_Print( -2, "\t-a       : toggle area minimization [default = %s]\n",                                    pPars->fArea? "yes": "no" );
    Abc_Print( -2, "\t-r       : toggle using reverse topo order for area minimization [default = %s]\n",       pPars->fAreaRev? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggle detecting multi-input AND/OR gates [default = %s]\n",                   pPars->fUseAndOr? "yes": "no" );
    Abc_Print( -2, "\t-z       : toggle zero-cost replacements [default = %s]\n",                               pPars->fZeroCost? "yes": "no" );
    Abc_Print( -2, "\t-e       : toggle using more effort [default = %s]\n",                                    pPars->fMoreEffort? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggle using simulation [default = %s]\n",                                     pPars->fUseSim? "yes": "no" );
    Abc_Print( -2, "\t-p       : toggle printing decompositions [default = %s]\n",                              pPars->fPrintDecs? "yes": "no" );
    Abc_Print( -2, "\t-d       : toggle printing delay profile statistics [default = %s]\n",                    pPars->fDelayVerbose? "yes": "no" );
    Abc_Print( -2, "\t-l       : toggle printing library usage statistics [default = %s]\n",                    pPars->fLibVerbose? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n",                        pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing detailed stats for each node [default = %s]\n",                pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMfse( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkOptMfse( Abc_Ntk_t * pNtk, Acb_Par_t * pPars );
    Abc_Ntk_t * pNtkNew, * pNtk = Abc_FrameReadNtk(pAbc);
    Acb_Par_t Pars, * pPars = &Pars; int c;
    Acb_ParSetDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IOWFLCadvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTfiLevMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTfiLevMax < 0 )
                goto usage;
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTfoLevMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTfoLevMax < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWinNodeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWinNodeMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFanoutMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFanoutMax < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nGrowthLevel = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nGrowthLevel < -ABC_INFINITY || pPars->nGrowthLevel > ABC_INFINITY )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'a':
            pPars->fArea ^= 1;
            break;
        case 'd':
            pPars->fUseAshen ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
        return 1;
    }
    pPars->nLutSize = Abc_NtkGetFaninMax( pNtk );
    if ( pPars->nLutSize > 6 )
    {
        Abc_Print( -1, "Command is only applicable to LUT size no more than 6.\n" );
        return 1;
    }
    Abc_NtkToSop( pNtk, -1, ABC_INFINITY );
    pNtkNew = Abc_NtkOptMfse( pNtk, pPars );
    if ( pNtkNew == NULL )
    {
        Abc_Print( -1, "Command \"mfse\" has failed.\n" );
        return 1;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkNew );
    return 0;

usage:
    Abc_Print( -2, "usage: mfse [-IOWFLC <num>] [-advwh]\n" );
    Abc_Print( -2, "\t           performs don't-care-based optimization of logic networks\n" );
    Abc_Print( -2, "\t-I <num> : the number of levels in the TFI cone (2 <= num) [default = %d]\n",             pPars->nTfiLevMax );
    Abc_Print( -2, "\t-O <num> : the number of levels in the TFO cone (0 <= num) [default = %d]\n",             pPars->nTfoLevMax );
    Abc_Print( -2, "\t-W <num> : the max number of nodes in the window (1 <= num) [default = %d]\n",            pPars->nWinNodeMax );
    Abc_Print( -2, "\t-F <num> : the max number of fanouts to skip (1 <= num) [default = %d]\n",                pPars->nFanoutMax );
    Abc_Print( -2, "\t-L <num> : the max increase in node level after resynthesis (0 <= num) [default = %d]\n", pPars->nGrowthLevel );
    Abc_Print( -2, "\t-C <num> : the max number of conflicts in one SAT run (0 = no limit) [default = %d]\n",   pPars->nBTLimit );
    Abc_Print( -2, "\t-a       : toggle minimizing area [default = %s]\n",                                      pPars->fArea? "area": "delay" );
    Abc_Print( -2, "\t-d       : toggle using Ashenhurst decomposition [default = %s]\n",                       pPars->fUseAshen? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n",                        pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing detailed stats for each node [default = %s]\n",                pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandLogicPush( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkOptPush( Abc_Ntk_t * pNtk, int nLutSize, int fVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Ntk_t * pNtkRes;
    int nLutSize = 4;
    int fVerbose = 0;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Kvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
        return 1;
    }
    nLutSize = Abc_MaxInt( nLutSize, Abc_NtkGetFaninMax(pNtk) );
    Abc_NtkToSop( pNtk, -1, ABC_INFINITY );
    pNtkRes = Abc_NtkOptPush( pNtk, nLutSize, fVerbose );
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;
usage:
    Abc_Print( -2, "usage: logicpush [-K num] [-vh]\n" );
    Abc_Print( -2, "\t           performs logic pushing to reduce structural bias\n" );
    Abc_Print( -2, "\t-K <num> : the LUT size used in the mapping [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTrace( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseLutLib;
    int fVerbose;
    extern void Abc_NtkDelayTracePrint( Abc_Ntk_t * pNtk, int fUseLutLib, int fVerbose );

    // set defaults
    fUseLutLib = 0;
    fVerbose   = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUseLutLib ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
        return 1;
    }

    // modify the current network
    Abc_NtkDelayTracePrint( pNtk, fUseLutLib, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: trace [-lvh]\n" );
    Abc_Print( -2, "\t           performs delay trace of LUT-mapped network\n" );
    Abc_Print( -2, "\t-l       : toggle using unit- or LUT-library-delay model [default = %s]\n", fUseLutLib? "lib": "unit" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandGlitch( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int nPats    = 4000;
    int Prob     =    8;
    int fVerbose =    1;
    int c;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NPvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nPats = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPats < 1 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            Prob = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Prob < 1 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a mapped logic network.\n" );
        return 1;
    }
    if ( Abc_NtkIsMappedLogic(pNtk) || Abc_NtkGetFaninMax(pNtk) <= 6 )
        Abc_Print( 1, "Glitching adds %7.2f %% of signal transitions, compared to switching.\n", Abc_NtkMfsTotalGlitching(pNtk, nPats, Prob, fVerbose) );
    else
        printf( "Currently computes glitching only for K-LUT networks with K <= 6.\n" );
    return 0;

usage:
    Abc_Print( -2, "usage: glitch [-NP <num>] [-vh]\n" );
    Abc_Print( -2, "\t           comparing glitching activity to switching activity\n" );
    Abc_Print( -2, "\t-N <num> : the number of random patterns to use (0 < num < 1000000) [default = %d]\n", nPats );
    Abc_Print( -2, "\t-P <num> : once in how many cycles an input changes its value [default = %d]\n", Prob );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSpeedup( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fUseLutLib;
    int Percentage;
    int Degree;
    int fVerbose;
    int fVeryVerbose;
    extern Abc_Ntk_t * Abc_NtkSpeedup( Abc_Ntk_t * pNtk, int fUseLutLib, int Percentage, int Degree, int fVerbose, int fVeryVerbose );
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    fUseLutLib = 0;
    Percentage = 5;
    Degree     = 2;
    fVerbose   = 0;
    fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PNlvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            Percentage = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Percentage < 1 || Percentage > 100 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            Degree = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Degree < 1 || Degree > 5 )
                goto usage;
            break;
        case 'l':
            fUseLutLib ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
        return 1;
    }

    // modify the current network
    pNtkRes = Abc_NtkSpeedup( pNtk, fUseLutLib, Percentage, Degree, fVerbose, fVeryVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "The command has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: speedup [-PN <num>] [-lvwh]\n" );
    Abc_Print( -2, "\t           transforms LUT-mapped network into an AIG with choices;\n" );
    Abc_Print( -2, "\t           the choices are added to speedup the next round of mapping\n" );
    Abc_Print( -2, "\t-P <num> : delay delta defining critical path for library model [default = %d%%]\n", Percentage );
    Abc_Print( -2, "\t-N <num> : the max critical path degree for resynthesis (0 < num < 6) [default = %d]\n", Degree );
    Abc_Print( -2, "\t-l       : toggle using unit- or LUT-library-delay model [default = %s]\n", fUseLutLib? "lib" : "unit" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing detailed stats for each node [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPowerdown( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fUseLutLib;
    int Percentage;
    int Degree;
    int fVerbose;
    int fVeryVerbose;
    extern Abc_Ntk_t * Abc_NtkPowerdown( Abc_Ntk_t * pNtk, int fUseLutLib, int Percentage, int Degree, int fVerbose, int fVeryVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fUseLutLib = 0;
    Percentage =10;
    Degree     = 2;
    fVerbose   = 0;
    fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PNlvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            Percentage = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Percentage < 1 || Percentage > 100 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            Degree = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Degree < 1 || Degree > 5 )
                goto usage;
            break;
        case 'l':
            fUseLutLib ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
        return 1;
    }

    // modify the current network
    pNtkRes = Abc_NtkPowerdown( pNtk, fUseLutLib, Percentage, Degree, fVerbose, fVeryVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "The command has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: powerdown [-PN <num>] [-vwh]\n" );
    Abc_Print( -2, "\t           transforms LUT-mapped network into an AIG with choices;\n" );
    Abc_Print( -2, "\t           the choices are added to power down the next round of mapping\n" );
    Abc_Print( -2, "\t-P <num> : switching propability delta defining power critical edges [default = %d%%]\n", Percentage );
    Abc_Print( -2, "\t           (e.g. 5% means hot wires switch with probability: 0.45 <= p <= 0.50 (max)\n" );
    Abc_Print( -2, "\t-N <num> : the max critical path degree for resynthesis (0 < num < 6) [default = %d]\n", Degree );
//    Abc_Print( -2, "\t-l       : toggle using unit- or LUT-library-delay model [default = %s]\n", fUseLutLib? "lib" : "unit" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing detailed stats for each node [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAddBuffs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkAddBuffs( Abc_Ntk_t * pNtk, int fDirect, int fReverse, int nImprove, int fVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Ntk_t * pNtkRes;
    int fDirect;
    int fReverse;
    int nImprove;
    int c, fVerbose;

    fDirect  = 0;
    fReverse = 0;
    nImprove = 1000;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Idrvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nImprove = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nImprove < 0 )
                goto usage;
            break;
        case 'd':
            fDirect ^= 1;
            break;
        case 'r':
            fReverse ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to a logic network.\n" );
        return 1;
    }

    // modify the current network
    pNtkRes = Abc_NtkAddBuffs( pNtk, fDirect, fReverse, nImprove, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "The command has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: addbuffs [-I num] [-drvh]\n" );
    Abc_Print( -2, "\t           adds buffers to create balanced CI/CO paths\n" );
    Abc_Print( -2, "\t-I <num> : the number of refinement iterations [default = %d]\n", nImprove );
    Abc_Print( -2, "\t-d       : toggle using only CI-to-CO levelized order [default = %s]\n", fDirect? "yes": "no" );
    Abc_Print( -2, "\t-r       : toggle using only CO-to-C1 levelized order [default = %s]\n", fReverse? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

//#if 0
/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMerge( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Nwk_LMPars_t Pars, * pPars = &Pars;
    Vec_Int_t * vResult;
    int c;
    extern Vec_Int_t * Abc_NtkLutMerge( Abc_Ntk_t * pNtk, Nwk_LMPars_t * pPars );
    // set defaults
    memset( pPars, 0, sizeof(Nwk_LMPars_t) );
    pPars->nMaxLutSize    = 5;   // the max LUT size for merging (N=5)
    pPars->nMaxSuppSize   = 5;   // the max total support size after merging (S=5)
    pPars->nMaxDistance   = 3;   // the max number of nodes separating LUTs
    pPars->nMaxLevelDiff  = 2;   // the max difference in levels
    pPars->nMaxFanout     = 100; // the max number of fanouts to traverse
    pPars->fUseDiffSupp   = 0;   // enables the use of nodes with different support
    pPars->fUseTfiTfo     = 0;   // enables the use of TFO/TFO nodes as candidates
    pPars->fVeryVerbose   = 0;   // enables additional verbose output
    pPars->fVerbose       = 1;   // enables verbose output
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NSDLFscvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxLutSize < 2 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxSuppSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxSuppSize < 2 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxDistance = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxDistance < 2 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxLevelDiff = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxLevelDiff < 2 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxFanout = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxFanout < 2 )
                goto usage;
            break;
        case 's':
            pPars->fUseDiffSupp ^= 1;
            break;
        case 'c':
            pPars->fUseTfiTfo ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL || !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Abc_CommandMerge(): There is no mapped network to merge LUTs.\n" );
        return 1;
    }

    vResult = Abc_NtkLutMerge( pNtk, pPars );
    Vec_IntFree( vResult );
    return 0;

usage:
    Abc_Print( -2, "usage: merge [-NSDLF <num>] [-scwvh]\n" );
    Abc_Print( -2, "\t           creates pairs of topologically-related LUTs\n" );
    Abc_Print( -2, "\t-N <num> : the max LUT size for merging (1 < num) [default = %d]\n", pPars->nMaxLutSize );
    Abc_Print( -2, "\t-S <num> : the max total support size after merging (1 < num) [default = %d]\n", pPars->nMaxSuppSize );
    Abc_Print( -2, "\t-D <num> : the max distance in terms of LUTs (0 < num) [default = %d]\n", pPars->nMaxDistance );
    Abc_Print( -2, "\t-L <num> : the max difference in levels (0 <= num) [default = %d]\n", pPars->nMaxLevelDiff );
    Abc_Print( -2, "\t-F <num> : the max number of fanouts to stop traversal (0 < num) [default = %d]\n", pPars->nMaxFanout );
    Abc_Print( -2, "\t-s       : toggle the use of nodes without support overlap [default = %s]\n", pPars->fUseDiffSupp? "yes" : "no" );
    Abc_Print( -2, "\t-c       : toggle the use of TFI/TFO nodes as candidates [default = %s]\n", pPars->fUseTfiTfo? "yes" : "no" );
    Abc_Print( -2, "\t-w       : toggle printing detailed stats for each node [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}
//#endif



/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestDec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_DecTest( char * pFileName, int DecType, int nVarNum, int fVerbose );
    char * pFileName;
    int c;
    int fVerbose = 0;
    int DecType = 0;
    int nVarNum = -1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ANvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            DecType = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( DecType < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVarNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVarNum < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( 1,"Input file is not given.\n" );
        return 0;
    }
    if ( nVarNum >= 0 && nVarNum < 6 )
    {
        Abc_Print( 1,"The number of variables cannot be less than 6.\n" );
        return 0;
    }
    // get the output file name
    pFileName = argv[globalUtilOptind];
    // call the testbench
    Abc_DecTest( pFileName, DecType, nVarNum, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: testdec [-AN <num>] [-vh] <file>\n" );
    Abc_Print( -2, "\t           testbench for Boolean decomposition algorithms\n" );
    Abc_Print( -2, "\t-A <num> : decomposition algorithm [default = %d]\n", DecType );
    Abc_Print( -2, "\t               0: none (reading and writing the file)\n" );
    Abc_Print( -2, "\t               1: algebraic factoring applied to ISOP\n" );
    Abc_Print( -2, "\t               2: bi-decomposition with cofactoring\n" );
    Abc_Print( -2, "\t               3: disjoint-support decomposition with cofactoring\n" );
    Abc_Print( -2, "\t               4: updated disjoint-support decomposition with cofactoring\n" );
    Abc_Print( -2, "\t               5: enumerating decomposable variable sets\n" );
    Abc_Print( -2, "\t               6: disjoint-support decomposition with cofactoring and boolean difference analysis\n" );
    Abc_Print( -2, "\t                  from V. Callegaro, F. S. Marranghello, M. G. A. Martins, R. P. Ribas and A. I. Reis,\n");
    Abc_Print( -2, "\t                  \"Bottom-up disjoint-support decomposition based on cofactor and boolean difference analysis,\" ICCD'15.\n" );
    Abc_Print( -2, "\t-N <num> : the number of support variables (binary files only) [default = unused]\n" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t<file>   : a text file with truth tables in hexadecimal, listed one per line,\n");
    Abc_Print( -2, "\t           or a binary file with an array of truth tables (in this case,\n");
    Abc_Print( -2, "\t           -N <num> is required to determine how many functions are stored)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestNpn( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_NpnTest( char * pFileName, int NpnType, int nVarNum, int fDumpRes, int fBinary, int fVerbose );
    char * pFileName;
    int c;
    int fVerbose = 0;
    int NpnType = 0;
    int nVarNum = -1;
    int fDumpRes = 0;
    int fBinary = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ANdbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            NpnType = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( NpnType < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVarNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVarNum < 0 )
                goto usage;
            break;
        case 'd':
            fDumpRes ^= 1;
            break;
        case 'b':
            fBinary ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( 1,"Input file is not given.\n" );
        return 0;
    }
    if ( nVarNum >= 0 && nVarNum < 6 )
    {
        Abc_Print( 1,"The number of variables cannot be less than 6.\n" );
        return 0;
    }
    // get the output file name
    pFileName = argv[globalUtilOptind];
    // call the testbench
    Abc_NpnTest( pFileName, NpnType, nVarNum, fDumpRes, fBinary, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: testnpn [-AN <num>] [-dbvh] <file>\n" );
    Abc_Print( -2, "\t           testbench for computing (semi-)canonical forms\n" );
    Abc_Print( -2, "\t           of completely-specified Boolean functions up to 16 variables\n" );
    Abc_Print( -2, "\t-A <num> : semi-caninical form computation algorithm [default = %d]\n", NpnType );
    Abc_Print( -2, "\t               0: uniqifying truth tables\n" );
    Abc_Print( -2, "\t               1: exact NPN canonical form by brute-force enumeration\n" );
    Abc_Print( -2, "\t               2: semi-canonical form by counting 1s in cofactors\n" );
    Abc_Print( -2, "\t               3: Jake's hybrid semi-canonical form (fast)\n" );
    Abc_Print( -2, "\t               4: Jake's hybrid semi-canonical form (high-effort)\n" );
    Abc_Print( -2, "\t               5: new fast hybrid semi-canonical form\n" );
    Abc_Print( -2, "\t               6: new phase canonical form\n" );
    Abc_Print( -2, "\t               7: new hierarchical matching\n" );
    Abc_Print( -2, "\t               8: hierarchical matching            by XueGong Zhou at Fudan University, Shanghai\n" );
    Abc_Print( -2, "\t               9: adjustable algorithm (heuristic) by XueGong Zhou at Fudan University, Shanghai\n" );
    Abc_Print( -2, "\t              10: adjustable algorithm (exact)     by XueGong Zhou at Fudan University, Shanghai\n" );
    Abc_Print( -2, "\t              11: new cost-aware exact algorithm   by XueGong Zhou at Fudan University, Shanghai\n" );
    Abc_Print( -2, "\t              12: new fast hybrid semi-canonical form (permutation only)\n" );
    Abc_Print( -2, "\t-N <num> : the number of support variables (binary files only) [default = unused]\n" );
    Abc_Print( -2, "\t-d       : toggle dumping resulting functions into a file [default = %s]\n", fDumpRes? "yes": "no" );
    Abc_Print( -2, "\t-b       : toggle dumping in binary format [default = %s]\n", fBinary? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t<file>   : a text file with truth tables in hexadecimal, listed one per line,\n");
    Abc_Print( -2, "\t           or a binary file with an array of truth tables (in this case,\n");
    Abc_Print( -2, "\t           -N <num> is required to determine how many functions are stored)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestRPO(Abc_Frame_t * pAbc, int argc, char ** argv) {
    extern int Abc_RpoTest(char * pFileName, int nVarNum, int nThreshold, int fVerbose);
    char * pFileName;
    int c;
    int nVarNum = -1;
    int fVerbose = 0;
    int nThreshold = -1;
    Extra_UtilGetoptReset();
    while ((c = Extra_UtilGetopt(argc, argv, "TNvh")) != EOF) {
        switch (c) {
            case 'N':
                if (globalUtilOptind >= argc) {
                    Abc_Print(-1, "Command line switch \"-N\" should be followed by an integer.\n");
                    goto usage;
                }
                nVarNum = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if (nVarNum < 0)
                    goto usage;
                break;
            case 'T':
                if (globalUtilOptind >= argc) {
                    Abc_Print(-1, "Command line switch \"-T\" should be followed by an integer.\n");
                    goto usage;
                }
                nThreshold = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if (nThreshold < 0)
                    goto usage;
                break;
            case 'v':
                fVerbose ^= 1;
                break;
            case 'h':
                goto usage;
            default:
                goto usage;
        }
    }
    if (argc != globalUtilOptind + 1)
    {
        Abc_Print(1, "Input file is not given.\n");
        goto usage;
    }
    // get the output file name
    pFileName = argv[globalUtilOptind];
    // call the testbench
    Abc_RpoTest( pFileName, nVarNum, nThreshold, fVerbose );
    return 0;

usage:
    Abc_Print(-2, "usage: testrpo [-NT <num>] [-vh] <file>\n");
    Abc_Print(-2, "\t           RPO algorithm developed and implemented by Mayler G. A. Martins,\n");
    Abc_Print(-2, "\t           Vinicius Callegaro, Renato P. Ribas and Andre' I. Reis\n");
    Abc_Print(-2, "\t           at Federal University of Rio Grande do Sul, Porto Alegre, Brazil\n");
    Abc_Print(-2, "\t-N <num> : the number of support variables (binary files only) [default = unused]\n");
    Abc_Print(-2, "\t-T <num> : the number of recursions accepted before abort [default = INFINITE]\n");
    Abc_Print(-2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose ? "yes" : "no");
    Abc_Print(-2, "\t-h       : print the command usage\n");
    Abc_Print(-2, "\t<file>   : a text file with truth tables in hexadecimal, listed one per line,\n");
    Abc_Print(-2, "\t           or a binary file with an array of truth tables (in this case,\n");
    Abc_Print(-2, "\t           -N <num> is required to determine how many functions are stored)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestTruth( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int * Kit_TruthTest( char * pFileName );
    int * pResult = NULL;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( 1,"Input file is not given.\n" );
        return 0;
    }
    pResult = Kit_TruthTest( argv[globalUtilOptind] );
    ABC_FREE( pResult );
    return 0;

usage:
    Abc_Print( -2, "usage: testtruth [-vh] <file>\n" );
    Abc_Print( -2, "\t           printing truth table stats\n" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestSupp( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkSuppMinFile( char * pFileName );
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( 1,"Input file is not given.\n" );
        return 0;
    }
    Abc_NtkSuppMinFile( argv[globalUtilOptind] );
    return 0;

usage:
    Abc_Print( -2, "usage: testsupp [-vh] <file>\n" );
    Abc_Print( -2, "\t           reads truth tables from file and support-minimizes them\n" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t<file>   : file to read the truth tables from\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestRand( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkRandFile( char * pFileName, int nVars, int nFuncs, int nMints );
    int c, nVars = 0, nFuncs = 0, nMints = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NFMvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFuncs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nMints = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( 1,"Input file is not given.\n" );
        return 0;
    }
    Abc_NtkRandFile( argv[globalUtilOptind], nVars, nFuncs, nMints );
    return 0;

usage:
    Abc_Print( -2, "usage: testrand [-NFMvh] <file>\n" );
    Abc_Print( -2, "\t           generates truth tables and writes them into a file\n" );
    Abc_Print( -2, "\t-N <num> : the number of input variables [default = %d]\n", nVars );
    Abc_Print( -2, "\t-F <num> : the number of random functions to generate [default = %d]\n", nFuncs );
    Abc_Print( -2, "\t-M <num> : the number of positive minterms in the random function [default = %d]\n", nMints );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t<file>   : file to write the truth tables to\n");    
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRunSat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    FILE * pFile = NULL;
    char * pFileCnf = NULL;
    int c, i, fWalk = 0, fKissat = 0, nIters = 10, fVerbose = 0;
    abctime clk;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ikwvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'k':
            fKissat ^= 1;
            break;           
        case 'w':
            fWalk ^= 1;
            break;             
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( fKissat + fWalk != 1 ) {
        printf( "Exactly one SAT solver should be selected.\n" );
        return 1;   
    }
    if ( argc != globalUtilOptind + 1 )
        goto usage;
    pFileCnf = argv[globalUtilOptind];
    pFile = fopen( pFileCnf, "rb" );
    if ( pFile == NULL ) {
        printf( "The file \"%s\" cannot be found.\n", pFileCnf );
        return 1;
    }
    fclose( pFile );
    clk = Abc_Clock();
    for ( i = 0; i < nIters; i++ ) {
        char pCommand[1000];
        if ( fKissat )
            sprintf( pCommand, "kissat -q --seed=%d %s", i, pFileCnf );
        else if ( fWalk )
            sprintf( pCommand, "walk -s%d %s", i, pFileCnf );
#if defined(__wasm)
        if (1) {
#else
        if (system(pCommand) == -1) {
#endif
            fprintf(stdout, "Command \"%s\" did not succeed.\n", pCommand);
            return 0;
        }
    }
    printf( "Performed %d iterations of SAT solving. ", nIters );
    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
    return 0;

usage:
    Abc_Print( -2, "usage: runsat [-I num] [-kwvh] <cnf_file>\n" );
    Abc_Print( -2, "\t         performs randomized iterations of SAT solving\n" );
    Abc_Print( -2, "\t-I num : the number of iterations [default = %d]\n", nIters );
    Abc_Print( -2, "\t-k     : toggle using Kissat (binary name \"kissat\") [default = %s]\n", fKissat? "yes": "no" );    
    Abc_Print( -2, "\t-w     : toggle using WalkSat (binary name \"walk\") [default = %s]\n", fWalk? "yes": "no" );    
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRunEco( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Acb_NtkRunEco( char * pFileNames[4], int nTimeout, int fCheck, int fRandom, int fInputs, int fUnitW, int fVerbose, int fVeryVerbose );
    char * pFileNames[4] = {NULL};
    int c, nTimeout = 0, fCheck = 0, fRandom = 0, fInputs = 0, fUnitW = 0, fVerbose = 0, fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Tcriuvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeout = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeout < 0 )
                goto usage;
            break;
        case 'c':
            fCheck ^= 1;
            break;
        case 'r':
            fRandom ^= 1;
            break;
        case 'i':
            fInputs ^= 1;
            break;
        case 'u':
            fUnitW ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
//    pArgvNew = argv + globalUtilOptind;
//    nArgcNew = argc - globalUtilOptind;
    if ( argc - globalUtilOptind < 2 || argc - globalUtilOptind > 3 )
    {
        Abc_Print( 1, "Expecting three file names on the command line.\n" );
        goto usage;
    }
    for ( c = 0; c < argc - globalUtilOptind; c++ )
    {
        FILE * pFile = fopen( argv[globalUtilOptind+c], "rb" );
        if ( pFile == NULL )
        {
            printf( "Cannot open input file \"%s\".\n", argv[globalUtilOptind+c] );
            return 0;
        }
        else
            fclose( pFile );
        pFileNames[c] = argv[globalUtilOptind+c];
    }
    Acb_NtkRunEco( pFileNames, nTimeout, fCheck, fRandom, fInputs, fUnitW, fVerbose, fVeryVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: runeco [-T num] [-criuvwh] <implementation> <specification> <weights>\n" );
    Abc_Print( -2, "\t         performs computation of patch functions during ECO,\n" );
    Abc_Print( -2, "\t         as described in the following paper: A. Q. Dao et al\n" );
    Abc_Print( -2, "\t         \"Efficient computation of ECO patch functions\", Proc. DAC\'18\n" );
    Abc_Print( -2, "\t         https://people.eecs.berkeley.edu/~alanmi/publications/2018/dac18_eco.pdf\n" );
    Abc_Print( -2, "\t         (currently only applicable to benchmarks from 2017 ICCAD CAD competition\n" );
    Abc_Print( -2, "\t         http://cad-contest-2017.el.cycu.edu.tw/Problem_A/default.html as follows:\n" );
    Abc_Print( -2, "\t         \"runeco unit1/F.v unit1/G.v unit1/weight.txt; cec -n out.v unit1/G.v\")\n" );
    Abc_Print( -2, "\t-T num : the timeout in seconds [default = %d]\n", nTimeout );
    Abc_Print( -2, "\t-c     : toggle checking that the problem has a solution [default = %s]\n", fCheck? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle using random permutation of support variables [default = %s]\n", fRandom? "yes": "no" );
    Abc_Print( -2, "\t-i     : toggle using primary inputs as support variables [default = %s]\n", fInputs? "yes": "no" );
    Abc_Print( -2, "\t-u     : toggle using unit weights [default = %s]\n", fUnitW? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing more verbose information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRunGen( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Acb_NtkRunGen( int nInputs, int nMints, int nFuncs, int Seed, int fVerbose, char * pScript );
    int c, nInputs = 10, nMints = 10, nFuncs = 10, Seed = 0, fVerbose = 0; char * pScript = NULL;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IMRSCvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nInputs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nMints = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nFuncs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a script.\n" );
                goto usage;
            }
            pScript = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pScript == NULL ) 
    {
        Abc_Print( -1, "Command line switch \"-C\" should be specified and followed by a string.\n" );
        goto usage;        
    }
    Acb_NtkRunGen( nInputs, nMints, nFuncs, Seed, fVerbose, pScript );
    return 0;

usage:
    Abc_Print( -2, "usage: rungen [-IMRS num] [-C script] [-vh]\n" );
    Abc_Print( -2, "\t           running the script on a set of randomly generated functions\n" );
    Abc_Print( -2, "\t-I <num> : the number of input variables [default = %d]\n", nInputs );
    Abc_Print( -2, "\t-M <num> : the number of positive minterms in the random function [default = %d]\n", nMints );
    Abc_Print( -2, "\t-R <num> : the number of random functions to try [default = %d]\n", nFuncs );
    Abc_Print( -2, "\t-S <num> : the random seed [default = %d]\n", Seed );
    Abc_Print( -2, "\t-C <num> : the script to apply [default = provided by the user]\n" );
    Abc_Print( -2, "\t-v       : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRunScript( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, nIters = 10, nBeg = 1, nAdd = 1, fReverse = 0, fVerbose = 0; char * pScript = NULL, * pSpot = NULL;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IBASrvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            nBeg = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            nAdd = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a script.\n" );
                goto usage;
            }
            pScript = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'r':
            fReverse ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pScript == NULL ) 
    {
        Abc_Print( -1, "Command line switch \"-S\" should be specified and followed by a string.\n" );
        goto usage;        
    }
    pSpot = strstr( pScript, "*" );
    if ( pSpot == NULL ) 
    {
        abctime clkTotal = Abc_Clock();
        for ( c = 0; c < nIters; c++ )
        {
            if ( fVerbose )
                printf( "ITERATION %3d : %s\n", c, pScript );
            if ( Cmd_CommandExecute(Abc_FrameGetGlobalFrame(), pScript) ) {
                Abc_Print( 1, "Something did not work out with the command \"%s\".\n", pScript );
                goto usage;
            }        
        }
        printf( "Finished iterating script %d times.  ", nIters );
        Abc_PrintTime( 1, "Total runtime", Abc_Clock() - clkTotal );
        return 0;    
    }
    else
    {
        abctime clkTotal = Abc_Clock();
        assert( *pSpot == '*' );
        for ( c = 0; c < nIters; c++ )
        {
            char pCommLine[1000] = {0};
            char pNumber[10] = {0};
            sprintf( pNumber, "%d", fReverse ? nBeg - c*nAdd : nBeg + c*nAdd );
            strcpy( pCommLine, pScript );
            pCommLine[(int)(pSpot - pScript)] = 0;
            strcat( pCommLine, pNumber );
            strcat( pCommLine, pSpot+1 );
            if ( fVerbose )
                printf( "ITERATION %3d : %s\n", c, pCommLine );
            if ( Cmd_CommandExecute(Abc_FrameGetGlobalFrame(), pCommLine) ) {
                Abc_Print( 1, "Something did not work out with the command \"%s\".\n", pCommLine );
                goto usage;
            }        
        }
        printf( "Finished iterating script %d times.  ", nIters );
        Abc_PrintTime( 1, "Total runtime", Abc_Clock() - clkTotal );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: runscript [-IBA num] [-S str] [-rvh]\n" );
    Abc_Print( -2, "\t           running the script with different values\n" );
    Abc_Print( -2, "\t-I <num> : the number of iterations [default = %d]\n", nIters );
    Abc_Print( -2, "\t-B <num> : the starting number [default = %d]\n", nBeg );
    Abc_Print( -2, "\t-A <num> : the increment added in each iteration [default = %d]\n", nAdd );
    Abc_Print( -2, "\t-S <str> : the script to iterate [default = none]\n" );
    Abc_Print( -2, "\t-r       : toggle reversing the order of counting [default = %s]\n", fReverse? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRunTest( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Acb_NtkRunTest( char * pFileNames[4], int fFancy, int fVerbose );
    char * pFileNames[4] = {NULL};
    int c, fFancy = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "fvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'f':
            fFancy ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc - globalUtilOptind < 2 || argc - globalUtilOptind > 5 )
    {
        Abc_Print( 1, "Expecting two or three file names on the command line.\n" );
        goto usage;
    }
    for ( c = 0; c < argc - globalUtilOptind; c++ )
        pFileNames[c] = argv[globalUtilOptind+c];
    Acb_NtkRunTest( pFileNames, fFancy, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: xec [-fvh] <file1> <file2>\n" );
    Abc_Print( -2, "\t           combinational equivalence checking with x-values\n" );
    Abc_Print( -2, "\t-f       : toggle using experimental feature [default = %s]\n",      fFancy? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing verbose information [default = %s]\n",    fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description [Orchestration synthesis]

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandOrchestrate( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pDup;
    int c, RetValue;

    int nNodeSizeMax;
    int nConeSizeMax;
    int fUpdateLevel;
    int fUseZeros_rwr;
    int fUseZeros_ref;
    int fUseDcs;
    int RS_CUT_MIN =  4;//rs option
    int RS_CUT_MAX = 16;//rs option
    int nCutsMax; //rs option
    int nNodesMax; //rs option
    int nLevelsOdc; //rs option

    int fPrecompute; //rewrite option (not enabled)
    int fPlaceEnable; //rewrite option (not enabled)

    int fVerbose; //rewrite/rs/rf verbose
    int fVeryVerbose; //very verbose option for all 
    //size_t NtkSize;
    extern void Rwr_Precompute();

    //local greedy
    extern int Abc_NtkOrchLocal( Abc_Ntk_t * pNtk, int fUseZeros_rwr, int fUseZeros_ref, int fPlaceEnable, int nCutsMax, int nNodesMax, int nLevelsOdc, int fUpdateLevel, int fVerbose, int fVeryVerbose, int nNodeSizeMax, int nConeSizeMax, int fUseDcs );
    //priority orch
    extern int Abc_NtkOchestration( Abc_Ntk_t * pNtk, Vec_Int_t **pGain_rwr, Vec_Int_t **pGain_res,Vec_Int_t **pGain_ref, int sOpsOrder, int fUseZeros_rwr, int fUseZeros_ref, int fPlaceEnable, int nCutsMax, int nNodesMax, int nLevelsOdc, int fUpdateLevel, int fVerbose, int fVeryVerbose, int nNodeSizeMax, int nConeSizeMax, int fUseDcs );
    // set defaults
    nNodeSizeMax = 10;
    nConeSizeMax = 16;
    fUpdateLevel =  1;
    fUseZeros_rwr =  1;
    fUseZeros_ref =  1;
    fUseDcs      =  0;
    fVerbose     =  0;
    fVeryVerbose = 0;
    fPlaceEnable = 0;
    fPrecompute  = 0;
    nCutsMax     =  8;
    nNodesMax    =  1;
    nLevelsOdc   =  0;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KNFZzlvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutsMax < 0 )
                goto usage;
            break;
       case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nNodesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodesMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevelsOdc = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevelsOdc < 0 )
                goto usage;
            break;
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'z':
            fUseZeros_rwr ^= 1;
            break;
        case 'Z':
            fUseZeros_ref ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
            break;
        }
    }
    if ( fPrecompute )
    {
        Rwr_Precompute();
        return 0;
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( nCutsMax < RS_CUT_MIN || nCutsMax > RS_CUT_MAX )
    {
        Abc_Print( -1, "Can only compute cuts for %d <= K <= %d.\n", RS_CUT_MIN, RS_CUT_MAX );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to an AIG (run \"strash\").\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum(pNtk) )
    {
        Abc_Print( -1, "AIG resynthesis cannot be applied to AIGs with choice nodes.\n" );
        return 1;
    }
    if ( nNodeSizeMax > 15 )
    {
        Abc_Print( -1, "The cone size cannot exceed 15.\n" );
        return 1;
    }

    if ( fUseDcs && nNodeSizeMax >= nConeSizeMax )
    {
        Abc_Print( -1, "For don't-care to work, containing cone should be larger than collapsed node.\n" );
        return 1;
    }

    // modify the current network
    pDup = Abc_NtkDup( pNtk );
    RetValue = Abc_NtkOrchLocal( pNtk, fUseZeros_rwr, fUseZeros_ref, fPlaceEnable, nCutsMax, nNodesMax, nLevelsOdc, fUpdateLevel, fVerbose, fVeryVerbose, nNodeSizeMax, nConeSizeMax, fUseDcs );
    if ( RetValue == -1 )
    {
        Abc_FrameReplaceCurrentNetwork( pAbc, pDup );
        printf( "An error occurred during computation. The original network is restored.\n" );
    }
    else
    {
        Abc_NtkDelete( pDup );
        if ( RetValue == 0 )
        {
            Abc_Print( 0, "Ochestration (local greedy) has failed.\n" );
            return 1;
        }
    }
    return 0;

usage:
    Abc_Print( -2, "usage: orchestrate [-KNFZzlvwh]\n" );
    Abc_Print( -2, "\t           performs technology-independent AIG synthesis using orchestration method (currently orchestrating rw/rf/rs)\n" );
    Abc_Print( -2, "\t-K <num> : (resub)the max cut size (%d <= num <= %d) [default = %d]\n", RS_CUT_MIN, RS_CUT_MAX, nCutsMax );
    Abc_Print( -2, "\t-N <num> : (resub)the max number of nodes to add (0 <= num <= 3) [default = %d]\n", nNodesMax );
    Abc_Print( -2, "\t-F <num> : (resub)the number of fanout levels for ODC computation [default = %d]\n", nLevelsOdc );
    Abc_Print( -2, "\t-l       : (resub/rw/refactor)toggle preserving the number of levels [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-z       : (rw)toggle using zero-cost replacements [default = %s]\n", fUseZeros_rwr? "yes": "no" );
    Abc_Print( -2, "\t-Z       : (refactor)toggle using zero-cost replacements [default = %s]\n", fUseZeros_ref? "yes": "no" );
    Abc_Print( -2, "\t-v       : (resub/rw/refactor)toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : (resub/rw/refactor)toggle detailed verbose printout [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description [AIG RTL Augmentation]

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAIGAugmentation( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pDup;
    int c, RetValue;
    int nNodeSizeMax;
    int nConeSizeMax;
    int fUpdateLevel;
    int fUseZeros_rwr;
    int fUseZeros_ref;
    int fUseDcs;
    int fVerbose;
    int RS_CUT_MIN =  4;
    int RS_CUT_MAX = 16;

    int fPrecompute;
    int fPlaceEnable;
    int nNodesMax;
    int nCutsMax;
    int nLevelsOdc;
    int fVeryVerbose;
    int Rand_Seed;
    //int sOpsOrder;
    size_t NtkSize;
    char *DecisionFile = NULL;
    Vec_Int_t *DecisionMask;
    Vec_Int_t *pGain_rwr;
    Vec_Int_t *pGain_res;
    Vec_Int_t *pGain_ref;    
    //FILE *maskFile;
    extern void Rwr_Precompute();
    extern int Abc_NtkOrchRand( Abc_Ntk_t * pNtk, Vec_Int_t **pGain_rwr, Vec_Int_t **pGain_res,Vec_Int_t **pGain_ref, Vec_Int_t **DecisionMask, char *DecisionFile, int Rand_Seed, int fUseZeros_rwr, int fUseZeros_ref, int fPlaceEnable, int nCutsMax, int nNodesMax, int nLevelsOdc, int fUpdateLevel, int fVerbose, int fVeryVerbose, int nNodeSizeMax, int nConeSizeMax, int fUseDcs );
    // set defaults
    nNodeSizeMax = 10;
    nConeSizeMax = 16;
    fUpdateLevel =  1;
    fUseZeros_rwr =  0;
    fUseZeros_ref =  0;
    fUseDcs      =  0;
    fVerbose     =  0;
    fVeryVerbose = 0;
    fPlaceEnable = 0;
    fPrecompute  = 0;
    nCutsMax     =  8;
    nNodesMax    =  1;
    nLevelsOdc   =  0;
    Rand_Seed = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "zZdsh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
            break;
        case 'z':
            fUseZeros_rwr ^= 1;
            break;
        case 'Z':
            fUseZeros_ref ^= 1;
            break;
        case 'd':
            if ( globalUtilOptind >= argc )
            {
                goto usage;
            }
            DecisionFile = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 's':
            if ( globalUtilOptind >= argc )
            {
                goto usage;
            }
            Rand_Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        }
    }
    if ( fPrecompute )
    {
        Rwr_Precompute();
        return 0;
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( nCutsMax < RS_CUT_MIN || nCutsMax > RS_CUT_MAX )
    {
        Abc_Print( -1, "Can only compute cuts for %d <= K <= %d.\n", RS_CUT_MIN, RS_CUT_MAX );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to an AIG (run \"strash\").\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum(pNtk) )
    {
        Abc_Print( -1, "AIG resynthesis cannot be applied to AIGs with choice nodes.\n" );
        return 1;
    }
    if ( nNodeSizeMax > 15 )
    {
        Abc_Print( -1, "The cone size cannot exceed 15.\n" );
        return 1;
    }

    if ( fUseDcs && nNodeSizeMax >= nConeSizeMax )
    {
        Abc_Print( -1, "For don't-care to work, containing cone should be larger than collapsed node.\n" );
        return 1;
    }
    NtkSize = Abc_NtkObjNumMax(pNtk);

    DecisionMask = Vec_IntAlloc(1);
    for (int i=0; i<NtkSize;i++){
           Vec_IntPush(DecisionMask, atoi("-1"));}
    // modify the current network
    pDup = Abc_NtkDup( pNtk );
    RetValue = Abc_NtkOrchRand( pNtk, &pGain_rwr, &pGain_res, &pGain_ref, &DecisionMask, DecisionFile, Rand_Seed, fUseZeros_rwr, fUseZeros_ref, fPlaceEnable, nCutsMax, nNodesMax, nLevelsOdc, fUpdateLevel, fVerbose, fVeryVerbose, nNodeSizeMax, nConeSizeMax, fUseDcs );
    //printf("Vector check: %d %d\n", DecisionList->nSize, DecisionList->pArray[0]); 
    if ( RetValue == -1 )
    {
        Abc_FrameReplaceCurrentNetwork( pAbc, pDup );
        printf( "An error occurred during computation. The original network is restored.\n" );
    }
    else
    {
        Abc_NtkDelete( pDup );
        if ( RetValue == 0 )
        {
            Abc_Print( 0, "Orchestration evaluation for RL has failed.\n" );
            return 1;
        }
    }
    // Vec_IntPrint(pGain_rwr);
    return 0;

usage:
    Abc_Print( -2, "usage: aigaug [-s <num>] [-d <file>][-zZdsh]\n" );
    Abc_Print( -2, "\t           performs technology-independent AIG random synthesis (node level) for RTL augmentation\n" );
    Abc_Print( -2, "\t-z       : toggle using zero-cost replacements for rwr for aigaug [default = %s]\n", fUseZeros_rwr? "yes": "no" );
    Abc_Print( -2, "\t-Z       : toggle using zero-cost replacements for ref for aigaug [default = %s]\n", fUseZeros_ref? "yes": "no" );
    Abc_Print( -2, "\t-d       : record random synthesis decision made during augmentation [required filename; e.g., test.csv]\n");
    Abc_Print( -2, "\t-s       : set the random seed for random augmentation\n");
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\tExample       : read i10.aig;st;aigaug -s 1 -d test.csv;write i10_arg_1.aig;cec i10.aig i10_arg_1.aig\n");
    return 1;
}





/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRewrite( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pDup;
    int c, RetValue;
    int fUpdateLevel;
    int fPrecompute;
    int fUseZeros;
    int fVerbose;
    int fVeryVerbose;
    int fPlaceEnable;
    // external functions
    extern void Rwr_Precompute();

    // set defaults
    fUpdateLevel = 1;
    fPrecompute  = 0;
    fUseZeros    = 0;
    fVerbose     = 0;
    fVeryVerbose = 0;
    fPlaceEnable = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lxzvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'x':
            fPrecompute ^= 1;
            break;
        case 'z':
            fUseZeros ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'p':
            fPlaceEnable ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( fPrecompute )
    {
        Rwr_Precompute();
        return 0;
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to an AIG (run \"strash\").\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum(pNtk) )
    {
        Abc_Print( -1, "AIG resynthesis cannot be applied to AIGs with choice nodes.\n" );
        return 1;
    }

    // modify the current network
    pDup = Abc_NtkDup( pNtk );
    RetValue = Abc_NtkRewrite( pNtk, fUpdateLevel, fUseZeros, fVerbose, fVeryVerbose, fPlaceEnable );
    if ( RetValue == -1 )
    {
        Abc_FrameReplaceCurrentNetwork( pAbc, pDup );
        printf( "An error occurred during computation. The original network is restored.\n" );
    }
    else
    {
        Abc_NtkDelete( pDup );
        if ( RetValue == 0 )
        {
            Abc_Print( 0, "Rewriting has failed.\n" );
            return 1;
        }
    }
    return 0;

usage:
    Abc_Print( -2, "usage: rewrite [-lzvwh]\n" );
    Abc_Print( -2, "\t         performs technology-independent rewriting of the AIG\n" );
    Abc_Print( -2, "\t-l     : toggle preserving the number of levels [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle using zero-cost replacements [default = %s]\n", fUseZeros? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printout subgraph statistics [default = %s]\n", fVeryVerbose? "yes": "no" );
//    Abc_Print( -2, "\t-p     : toggle placement-aware rewriting [default = %s]\n", fPlaceEnable? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRefactor( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pDup;
    int c, RetValue;
    int nNodeSizeMax;
    int nMinSaved;
    int nConeSizeMax;
    int fUpdateLevel;
    int fUseZeros;
    int fUseDcs;
    int fVerbose;
    extern int Abc_NtkRefactor( Abc_Ntk_t * pNtk, int nNodeSizeMax, int nMinSaved, int nConeSizeMax, int fUpdateLevel, int fUseZeros, int fUseDcs, int fVerbose );

    // set defaults
    nNodeSizeMax = 10;
    nMinSaved    =  1;
    nConeSizeMax = 16;
    fUpdateLevel =  1;
    fUseZeros    =  0;
    fUseDcs      =  0;
    fVerbose     =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NMClzvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nNodeSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodeSizeMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nMinSaved = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMinSaved < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConeSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConeSizeMax < 0 )
                goto usage;
            break;
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'z':
            fUseZeros ^= 1;
            break;
        case 'd':
            fUseDcs ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( fUseZeros )
        nMinSaved = 0;
    if ( nMinSaved == 0 )
        fUseZeros = 1;

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to an AIG (run \"strash\").\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum(pNtk) )
    {
        Abc_Print( -1, "AIG resynthesis cannot be applied to AIGs with choice nodes.\n" );
        return 1;
    }
    if ( nNodeSizeMax > 15 )
    {
        Abc_Print( -1, "The cone size cannot exceed 15.\n" );
        return 1;
    }

    if ( fUseDcs && nNodeSizeMax >= nConeSizeMax )
    {
        Abc_Print( -1, "For don't-care to work, containing cone should be larger than collapsed node.\n" );
        return 1;
    }

    // modify the current network
    pDup = Abc_NtkDup( pNtk );
    RetValue = Abc_NtkRefactor( pNtk, nNodeSizeMax, nMinSaved, nConeSizeMax, fUpdateLevel, fUseZeros, fUseDcs, fVerbose );
    if ( RetValue == -1 )
    {
        Abc_FrameReplaceCurrentNetwork( pAbc, pDup );
        printf( "An error occurred during computation. The original network is restored.\n" );
    }
    else
    {
        Abc_NtkDelete( pDup );
        if ( RetValue == 0 )
        {
            Abc_Print( 0, "Refactoring has failed.\n" );
            return 1;
        }
    }
    return 0;

usage:
    Abc_Print( -2, "usage: refactor [-NM <num>] [-lzvh]\n" );
    Abc_Print( -2, "\t           performs technology-independent refactoring of the AIG\n" );
    Abc_Print( -2, "\t-N <num> : the max support of the collapsed node [default = %d]\n", nNodeSizeMax );
    Abc_Print( -2, "\t-M <num> : the min number of nodes saved after one step (0 <= num) [default = %d]\n", nMinSaved );
//    Abc_Print( -2, "\t-C <num> : the max support of the containing cone [default = %d]\n", nConeSizeMax );
    Abc_Print( -2, "\t-l       : toggle preserving the number of levels [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-z       : toggle using zero-cost replacements [default = %s]\n", fUseZeros? "yes": "no" );
//    Abc_Print( -2, "\t-d       : toggle using don't-cares [default = %s]\n", fUseDcs? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRestructure( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int nCutsMax;
    int fUpdateLevel;
    int fUseZeros;
    int fVerbose;
    extern int Abc_NtkRestructure( Abc_Ntk_t * pNtk, int nCutsMax, int fUpdateLevel, int fUseZeros, int fVerbose );

    // set defaults
    nCutsMax      =  5;
    fUpdateLevel =  0;
    fUseZeros    =  0;
    fVerbose     =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Klzvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutsMax < 0 )
                goto usage;
            break;
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'z':
            fUseZeros ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( nCutsMax < 4 || nCutsMax > CUT_SIZE_MAX )
    {
        Abc_Print( -1, "Can only compute the cuts for %d <= K <= %d.\n", 4, CUT_SIZE_MAX );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to an AIG (run \"strash\").\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum(pNtk) )
    {
        Abc_Print( -1, "AIG resynthesis cannot be applied to AIGs with choice nodes.\n" );
        return 1;
    }

    // modify the current network
    if ( !Abc_NtkRestructure( pNtk, nCutsMax, fUpdateLevel, fUseZeros, fVerbose ) )
    {
        Abc_Print( -1, "Refactoring has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: restructure [-K <num>] [-lzvh]\n" );
    Abc_Print( -2, "\t           performs technology-independent restructuring of the AIG\n" );
    Abc_Print( -2, "\t-K <num> : the max cut size (%d <= num <= %d) [default = %d]\n",   CUT_SIZE_MIN, CUT_SIZE_MAX, nCutsMax );
    Abc_Print( -2, "\t-l       : toggle preserving the number of levels [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-z       : toggle using zero-cost replacements [default = %s]\n", fUseZeros? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandResubstitute( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int RS_CUT_MIN =  4;
    int RS_CUT_MAX = 16;
    int c;
    int nCutsMax;
    int nNodesMax;
    int nLevelsOdc;
    int nMinSaved;
    int fUpdateLevel;
    int fUseZeros;
    int fVerbose;
    int fVeryVerbose;
    int Log2Probs;
    int Log2Divs;
    extern int Abc_NtkResubstitute( Abc_Ntk_t * pNtk, int nCutsMax, int nNodesMax, int nMinSaved, int nLevelsOdc, int fUpdateLevel, int fVerbose, int fVeryVerbose, int Log2Probs, int Log2Divs );

    // set defaults
    nCutsMax     =  8;
    nNodesMax    =  1;
    nLevelsOdc   =  0;
    nMinSaved    =  1;
    fUpdateLevel =  1;
    fUseZeros    =  0;
    fVerbose     =  0;
    fVeryVerbose =  0;
    Log2Probs    =  0;
    Log2Divs     =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KNMFlzvwhPDV" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutsMax < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nNodesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodesMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nMinSaved = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMinSaved < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevelsOdc = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevelsOdc < 0 )
                goto usage;
            break;

        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            Log2Probs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Log2Probs < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            Log2Divs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Log2Divs < 0 )
                goto usage;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutsMax < 0 )
                goto usage;
            break;
            
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'z':
            fUseZeros ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( fUseZeros )
        nMinSaved = 0;
    if ( nMinSaved == 0 )
        fUseZeros = 1;

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( nCutsMax < RS_CUT_MIN || nCutsMax > RS_CUT_MAX )
    {
        Abc_Print( -1, "Can only compute cuts for %d <= K <= %d.\n", RS_CUT_MIN, RS_CUT_MAX );
        return 1;
    }
    if ( nNodesMax < 0 || nNodesMax > 3 )
    {
        Abc_Print( -1, "Can only resubstitute at most 3 nodes.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to an AIG (run \"strash\").\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum(pNtk) )
    {
        Abc_Print( -1, "AIG resynthesis cannot be applied to AIGs with choice nodes.\n" );
        return 1;
    }

    // modify the current network
    if ( !Abc_NtkResubstitute( pNtk, nCutsMax, nNodesMax, nMinSaved, nLevelsOdc, fUpdateLevel, fVerbose, fVeryVerbose, Log2Probs, Log2Divs ) )
    {
        Abc_Print( -1, "Refactoring has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: resub [-KNMF <num>] [-lzvwh] [-PDV <num>]\n" );
    Abc_Print( -2, "\t           performs technology-independent restructuring of the AIG\n" );
    Abc_Print( -2, "\t-K <num> : the max cut size (%d <= num <= %d) [default = %d]\n", RS_CUT_MIN, RS_CUT_MAX, nCutsMax );
    Abc_Print( -2, "\t-N <num> : the max number of nodes to add (0 <= num <= 3) [default = %d]\n", nNodesMax );
    Abc_Print( -2, "\t-M <num> : the min number of nodes saved after one step (0 <= num) [default = %d]\n", nMinSaved );
    Abc_Print( -2, "\t-F <num> : the number of fanout levels for ODC computation [default = %d]\n", nLevelsOdc );
    Abc_Print( -2, "\t-l       : toggle preserving the number of levels [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-z       : toggle using zero-cost replacements [default = %s]\n", fUseZeros? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle verbose printout of ODC computation [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n\n");
    Abc_Print( -2, "\t           When command line options '-P num', '-D num', and '-V num' are used,\n");
    Abc_Print( -2, "\t           this command does not perform resubstitution; instead, it dumps a binary file\n");
    Abc_Print( -2, "\t           containing 2^P resub problems, each containing 2^D-2 divs with support size V,\n");
    Abc_Print( -2, "\t           while the last two divisors are the offset and the onset of the function\n");
    Abc_Print( -2, "\t           (by default, the functions are completely specified; to get functions with don't-cares,\n");
    Abc_Print( -2, "\t           the user has to use command-line option '-F num' to enable the limited ODC computation)\n");
    Abc_Print( -2, "\t-P <num> : the log2 of the number of problems to be dumped [default = %d]\n", Log2Probs );
    Abc_Print( -2, "\t-D <num> : the log2 of the number of divisors to be collected (4 <= num <= 7) [default = %d]\n", Log2Divs );
    Abc_Print( -2, "\t-V <num> : the support size of the function (%d <= num <= %d) [default = %d]\n", RS_CUT_MIN, RS_CUT_MAX, nCutsMax );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandResubUnate( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManResubUnateOne( char * pFileName, int nLimit, int nDivMax, int fWriteSol, int fVerbose );
    Gia_Man_t * pTemp;
    int nLimit    = 16;
    int nDivMax   = 50;
    int fWriteSol =  0;
    int fVerbose  =  0, c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "LDsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLimit < 0 )
                goto usage;
            break;   
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nDivMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDivMax < 0 )
                goto usage;
            break;                        
        case 's':
            fWriteSol ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 1 ) 
    {
        Abc_Print( -1, "Input file should be given on the command line.\n" );
        return 1;
    }
    pTemp = Gia_ManResubUnateOne( argv[globalUtilOptind], nLimit, nDivMax, fWriteSol, fVerbose );
    if ( pTemp )
    {
        Aig_Man_t * pMan = Gia_ManToAig( pTemp, 0 );
        Abc_Ntk_t * pNtk = Abc_NtkFromAigPhase( pMan );
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtk );
        Aig_ManStop( pMan );
        Gia_ManStop( pTemp );
        return 0;
    }
    Abc_Print( 0, "The networks is not generated.\n" );    
    return 0;

usage:
    Abc_Print( -2, "usage: resub_unate [-LD <num>] [-svh] <file>\n" );
    Abc_Print( -2, "\t         solves one instance of the resub problem\n" );
    Abc_Print( -2, "\t-L num : the limit on the number of nodes [default = %d]\n",                  nLimit );
    Abc_Print( -2, "\t-D num : the maximum number of binate divisors to consider [default = %d]\n", nDivMax );
    Abc_Print( -2, "\t-s     : toggle saving the result in the input file [default = %s]\n",        fWriteSol? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n",                           fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : resub problem file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandResubCore( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Supp_ManSolveOne( char * pFileName, int nIters, int nRounds, int fWriteSol, int fVerbose );
    Gia_Man_t * pTemp;
    int nIters    = 1;
    int nRounds   = 1;
    int fWriteSol = 0;
    int fVerbose  = 0, c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IRsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;   
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRounds < 0 )
                goto usage;
            break;                        
        case 's':
            fWriteSol ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 1 ) 
    {
        Abc_Print( -1, "Input file should be given on the command line.\n" );
        return 1;
    }
    pTemp = Supp_ManSolveOne( argv[globalUtilOptind], nIters, nRounds, fWriteSol, fVerbose );
    if ( pTemp )
    {
        Aig_Man_t * pMan = Gia_ManToAig( pTemp, 0 );
        Abc_Ntk_t * pNtk = Abc_NtkFromAigPhase( pMan );
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtk );
        Aig_ManStop( pMan );
        Gia_ManStop( pTemp );
        return 0;
    }
    Abc_Print( 0, "The networks is not generated.\n" );    
    return 0;

usage:
    Abc_Print( -2, "usage: resub_core [-IR <num>] [-svh] <file>\n" );
    Abc_Print( -2, "\t         solves one instance of the resub problem\n" );
    Abc_Print( -2, "\t-I num : the number of iterations [default = %d]\n",                   nIters );
    Abc_Print( -2, "\t-R num : the number of rounds in each iteration [default = %d]\n",     nRounds );
    Abc_Print( -2, "\t-s     : toggle saving the result in the input file [default = %s]\n", fWriteSol? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n",                    fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : resub problem file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandResubCheck( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Res6_ManResubCheck( char * pFileNameRes, char * pFileNameSol, int fVerbose );
    extern void Res6_ManResubCheckPla( char * pFileName, int fVerbose );
    char * pFileR = NULL, * pFileS = NULL;
    int fVerbose = 0, c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 2 )
    {
        pFileR = argv[globalUtilOptind];
        pFileS = argv[globalUtilOptind+1];
    }
    else if ( argc == globalUtilOptind + 1 )
    {
        pFileR = argv[globalUtilOptind];
        pFileS = NULL;
    }
    else 
    {
        Abc_Print( -1, "Incorrect number of command line arguments.\n" );
        return 1;
    }
    if ( !strcmp(pFileR + strlen(pFileR) - 3, "pla") )
        Res6_ManResubCheckPla( pFileR, fVerbose );
    else
        Res6_ManResubCheck( pFileR, pFileS, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: resub_check [-vh] <file1> <file2>\n" );
    Abc_Print( -2, "\t           checks solution to a resub problem\n" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t<file1>  : resub problem file name\n");
    Abc_Print( -2, "\t<file2>  : (optional) solution file name\n");
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRr( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c, Window;
    int nFaninLevels;
    int nFanoutLevels;
    int fUseFanouts;
    int fVerbose;
    extern int Abc_NtkRR( Abc_Ntk_t * pNtk, int nFaninLevels, int nFanoutLevels, int fUseFanouts, int fVerbose );

    // set defaults
    nFaninLevels  = 3;
    nFanoutLevels = 3;
    fUseFanouts   = 0;
    fVerbose      = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Wfvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            Window = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Window < 0 )
                goto usage;
            nFaninLevels  = Window / 10;
            nFanoutLevels = Window % 10;
            break;
        case 'f':
            fUseFanouts ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    printf( "This command is obsolete." );
    printf( "To perform pure redudancy removal, try \"mfs -r\".\n" );
    printf( "To perform something a little stronger try \"mfs2\"\n" );
    printf( "When working with an AIG, use \"logic\" before and \"strash\" after this command.\n" );
    return 0;

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command can only be applied to an AIG (run \"strash\").\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum(pNtk) )
    {
        Abc_Print( -1, "AIG resynthesis cannot be applied to AIGs with choice nodes.\n" );
        return 1;
    }

    // modify the current network
    if ( !Abc_NtkRR( pNtk, nFaninLevels, nFanoutLevels, fUseFanouts, fVerbose ) )
    {
        Abc_Print( -1, "Redundancy removal has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: rr [-W NM] [-fvh]\n" );
    Abc_Print( -2, "\t         removes combinational redundancies in the current network\n" );
    Abc_Print( -2, "\t-W NM  : window size: TFI (N) and TFO (M) logic levels [default = %d%d]\n", nFaninLevels, nFanoutLevels );
    Abc_Print( -2, "\t-f     : toggle RR w.r.t. fanouts [default = %s]\n", fUseFanouts? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCascade( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, nLutSize;
    int fCheck;
    int fVerbose;
    extern Abc_Ntk_t * Abc_NtkCascade( Abc_Ntk_t * pNtk, int nLutSize, int fCheck, int fVerbose );
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    nLutSize = 12;
    fCheck   = 0;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Kcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'c':
            fCheck ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty neAtwork.\n" );
        return 1;
    }

    if ( !Abc_NtkIsLogic(pNtk) && !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Can only collapse a logic network or an AIG.\n" );
        return 1;
    }

    // get the new network
    if ( Abc_NtkIsStrash(pNtk) )
        pNtkRes = Abc_NtkCascade( pNtk, nLutSize, fCheck, fVerbose );
    else
    {
        pNtk = Abc_NtkStrash( pNtk, 0, 0, 0 );
        pNtkRes = Abc_NtkCascade( pNtk, nLutSize, fCheck, fVerbose );
        Abc_NtkDelete( pNtk );
    }
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Cascade synthesis has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: cascade [-K <num>] [-cvh]\n" );
    Abc_Print( -2, "\t           performs LUT cascade synthesis for the current network\n" );
    Abc_Print( -2, "\t-K <num> : the number of LUT inputs [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-c       : check equivalence after synthesis [default = %s]\n", fCheck? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t           \n");
    Abc_Print( -2, "  A lookup-table cascade is a programmable architecture developed by\n");
    Abc_Print( -2, "  Professor Tsutomu Sasao (sasao@cse.kyutech.ac.jp) at Kyushu Institute\n");
    Abc_Print( -2, "  of Technology. This work received Takeda Techno-Entrepreneurship Award:\n");
    Abc_Print( -2, "  http://www.lsi-cad.com/sasao/photo/takeda.html\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandLutCasDec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkLutCascadeGen( int nLutSize, int nStages, int nRails, int nShared, int fVerbose );
    extern Abc_Ntk_t * Abc_NtkLutCascadeOne( Abc_Ntk_t * pNtk, int nLutSize, int nLuts, int nRails, int nIters, int nJRatio, int nZParam, int fXRail, int Seed, int fVerbose, int fVeryVerbose, char * pGuide, int nSubsets, int nBest );
    extern void        Abc_NtkLutCascadeFile( char * pFileName, int nVarNum, int nLutSize, int nLuts, int nRails, int nIters, int nJRatio, int nZParam, int Seed, int fVerbose, int fVeryVerbose, int fPrintMyu, int fPrintLev, int fXRail, int nSubsets, int nBest, int fDump );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pNtkRes; char * pGuide = NULL, * pFileName = NULL;
    int c, nVarNum = -1, nLutSize = 6, nStages = 8, nRails = 1, nShared = 2, Seed = 0, nIters = 10, nJRatio = -1, nZParam = 5, fGen = 0, fPrintMyu = 0, fPrintLev = 0, fXRail = 0, nSubsets = 0, nBest = 0, fDump = 0, fVerbose = 0, fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KMRSCIZNGBFgmlxdvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nStages = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nStages < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRails = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRails < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nShared = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nShared < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'J':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-J\" should be followed by an integer.\n" );
                goto usage;
            }
            nJRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nJRatio < 0 )
                goto usage;
            break;
        case 'Z':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Z\" should be followed by a file name.\n" );
                goto usage;
            }
            nZParam = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;        
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVarNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVarNum < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            nSubsets = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSubsets < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            nBest = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBest < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a file name.\n" );
                goto usage;
            }
            pFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;        
        case 'g':
            fGen ^= 1;
            break;
        case 'm':
            fPrintMyu ^= 1;
            break;
        case 'l':
            fPrintLev ^= 1;
            break;
        case 'x':
            fXRail ^= 1;
            break;
        case 'd':
            fDump ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pFileName ) 
    {
        if ( nVarNum == -1 ) 
        {
            Abc_Print( -1, "The number of variables should be given on the command line using switch \"-N <num>\".\n" );
            return 1;
        }
        Abc_NtkLutCascadeFile( pFileName, nVarNum, nLutSize, nStages, nRails, nIters, nJRatio, nZParam, Seed, fVerbose, fVeryVerbose, fPrintMyu, fPrintLev, fXRail, nSubsets, nBest, fDump );
        return 0;
    }
    if ( fGen )
    {
        pNtkRes = Abc_NtkLutCascadeGen( nLutSize, nStages, nRails, nShared, fVerbose );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "LUT cascade generation failed.\n" );
            return 1;
        }
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
        return 0;
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkCoNum(pNtk) != 1 )
    {
        Abc_Print( -1, "This command is currently applicable only to single-output networks.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Run command \"strash\" to convert the network into an AIG.\n" );
        return 1;
    }
    if ( Abc_NtkCiNum(pNtk) > nLutSize + (nLutSize - nRails) * (nStages - 1) )
    {
        Abc_Print( -1, "Cannot decompose %d-input function into a %d-rail cascade of %d %d-LUTs (max suppose size = %d).\n", 
            Abc_NtkCiNum(pNtk), nRails, nStages, nLutSize, nLutSize + (nLutSize - nRails) * (nStages - 1) );
        return 1;
    }
    if ( argc == globalUtilOptind + 1 )
        pGuide = argv[globalUtilOptind];
    pNtkRes = Abc_NtkLutCascadeOne( pNtk, nLutSize, nStages, nRails, nIters, nJRatio, nZParam, fXRail, Seed, fVerbose, fVeryVerbose, pGuide, nSubsets, nBest );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "LUT cascade mapping failed.\n" );
        return 1;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: lutcasdec [-KMRCSIZNGB <num>] [-F <file>] [-gmlxdvwh]\n" );
    Abc_Print( -2, "\t           decomposes the primary output functions into LUT cascades\n" );
    Abc_Print( -2, "\t-K <num> : the number of LUT inputs [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-M <num> : the maximum delay (the number of stages) [default = %d]\n", nStages );
    Abc_Print( -2, "\t-R <num> : the number of direct connections (rails) [default = %d]\n", nRails );
    Abc_Print( -2, "\t-C <num> : the number of shared variables in each stage [default = %d]\n", nShared );
    Abc_Print( -2, "\t-S <num> : the random seed for randomized bound-set selection [default = %d]\n", Seed );
    Abc_Print( -2, "\t-I <num> : the number of iterations when looking for a solution [default = %d]\n", nIters );
    //Abc_Print( -2, "\t-J <num> : toggle using random bound-set every this many iterations [default = %d]\n", nJRatio );
    Abc_Print( -2, "\t-Z <num> : the number determining how many decompositions are tried  [default = %d]\n", nZParam );
    Abc_Print( -2, "\t-N <num> : the number of support variables (for truth table files only) [default = unused]\n" );
    Abc_Print( -2, "\t-G <num> : the number of variable groups to consider [default = %d]\n", nSubsets );
    Abc_Print( -2, "\t-B <num> : the number of best groups to use as bound-sets [default = %d]\n", nBest );
    Abc_Print( -2, "\t-F <file>: a text file with truth tables in hexadecimal listed one per line\n");    
    Abc_Print( -2, "\t-g       : toggle generating random cascade with these parameters [default = %s]\n", fGen? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggle printing column multiplicity statistics [default = %s]\n", fPrintMyu? "yes": "no" );
    Abc_Print( -2, "\t-l       : toggle printing level counting statistics [default = %s]\n", fPrintLev? "yes": "no" );
    Abc_Print( -2, "\t-x       : toggle using extended cascade decomposition [default = %s]\n", fXRail? "yes": "no" );
    Abc_Print( -2, "\t-d       : toggle dumping non-decomposable functions into a file [default = %s]\n", fDump? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle additional verbose printout [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandLutCas( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkLutCascadeMap( Abc_Ntk_t * pNtk, int nLutsMax, int nIters, int fDelayLut, int fDelayRoute, int fDelayDirect, int fVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pNtkRes;
    int c, nLutSize = 6, nLutsMax = 8, nIters = 1000, Seed = 0, fVerbose = 0;
    int fDelayLut = 10, fDelayRoute = 30, fDelayDirect = 3;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KMISLWDfvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutsMax < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            fDelayLut = atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( fDelayLut < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            fDelayRoute = atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( fDelayRoute < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            fDelayDirect = atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( fDelayDirect < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Run command \"if\" or any other LUT mapper to map the current network into LUTs.\n" );
        return 1;
    }
    if ( Abc_NtkGetFaninMax(pNtk) > nLutSize )
    {
        Abc_Print( -1, "The current network contains nodes with fanin count (%d) exceeding the LUT size (%d).\n", Abc_NtkGetFaninMax(pNtk), nLutSize );
        return 1;            
    }
    srand( Seed );
    pNtkRes = Abc_NtkLutCascadeMap( pNtk, nLutsMax, nIters, fDelayLut, fDelayRoute, fDelayDirect, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "LUT cascade mapping failed.\n" );
        return 1;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: lutcas [-KMISLWD <num>] [-vh]\n" );
    Abc_Print( -2, "\t           decomposes the current network into LUT cascades\n" );
    Abc_Print( -2, "\t-K <num> : the number of LUT inputs [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-M <num> : the maximum number of LUTs in the cascade [default = %d]\n", nLutsMax );
    Abc_Print( -2, "\t-I <num> : the number of iterations when looking for a solution [default = %d]\n", nIters );
    Abc_Print( -2, "\t-S <num> : the random seed used to randimize solutions [default = %d]\n", Seed );
    Abc_Print( -2, "\t-L <num> : the intrinsic LUT delay [default = %d]\n", fDelayLut );
    Abc_Print( -2, "\t-W <num> : the routable wire delay [default = %d]\n", fDelayRoute );
    Abc_Print( -2, "\t-D <num> : the non-routable wire delay [default = %d]\n", fDelayDirect );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBsEval( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_BSEvalOneTest( word * pT, int nVars, int nBVars, int fVerbose );
    extern void Abc_BSEvalBestTest( word * pIn, int nVars, int nBVars, int fShared, int fVerbose );
    extern void Abc_BSEvalBestGen( int nVars, int nBVars, int nFuncs, int nMints, int fTryAll, int fShared, int fVerbose );
    int c, nVars = 0, nBVars = 0, nSVars = 0, nFuncs = 0, nMints = 0, fTryAll = 0, fVerbose = 0; char * pTtStr = NULL;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IBSRMavh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 2 || nVars > 16 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            nBVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBVars < 1 || nBVars > 16 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nSVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSVars < 0 || nSVars > 16 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nFuncs = atoi(argv[globalUtilOptind]);
            if ( nFuncs < 1 )
                goto usage;
            globalUtilOptind++;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nMints = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'a':
            fTryAll ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
        pTtStr = argv[globalUtilOptind];
    if ( pTtStr ) 
    {
        nVars = Abc_Base2Log((int)strlen(pTtStr)) + 2;
        if ( (1 << (nVars-2)) != (int)strlen(pTtStr) )
        {
            Abc_Print( -1, "Truth table is expected to have %d hex digits (instead of %d).\n", (1 << (nVars-2)), strlen(pTtStr) );
            return 1;
        }
    }
    if ( nVars == 0 )
    {
        Abc_Print( -1, "The number of variables should be specified on the command line.\n" );
        return 1;
    }
    if ( nBVars == 0 )
    {
        Abc_Print( -1, "The bound set size should be specified on the command line.\n" );
        return 1;
    }
    if ( nFuncs ) 
        Abc_BSEvalBestGen( nVars, nBVars, nFuncs, nMints, fTryAll, nSVars == 1, fVerbose );
    else if ( pTtStr ) 
    {
        word pTruth[1024] = {0}; 
        Abc_TtReadHex( pTruth, pTtStr );
        if ( fTryAll )
            Abc_BSEvalBestTest( pTruth, nVars, nBVars, nSVars == 1, fVerbose );
        else
            Abc_BSEvalOneTest( pTruth, nVars, nBVars, fVerbose );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: bseval [-IBSRM <num>] [-avh] <hex>\n" );
    Abc_Print( -2, "\t           bound set evaluation\n" );
    Abc_Print( -2, "\t-I <num> : the number of input variables [default = %d]\n", nVars );
    Abc_Print( -2, "\t-B <num> : the number of bound set variables [default = %d]\n", nBVars );
    Abc_Print( -2, "\t-S <num> : the number of shared variables [default = %d]\n", nSVars );
    Abc_Print( -2, "\t-R <num> : the number of random functions to try [default = unused]\n" );
    Abc_Print( -2, "\t-M <num> : the number of positive minterms in the random function [default = unused]\n" );
    Abc_Print( -2, "\t-a       : toggle trying all bound sets of this size [default = %s]\n", fTryAll ? "yes" : "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    Abc_Print( -2, "\t<hex>    : truth table in hex notation\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandExtract( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkShareXor( Abc_Ntk_t * pNtk, int nMultiSize, int fAnd, int fVerbose );
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, nMultiSize, fAnd, fVerbose;
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    nMultiSize = 3;
    fAnd       = 0;
    fVerbose   = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Kavh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nMultiSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMultiSize < 0 )
                goto usage;
            break;
        case 'a':
            fAnd ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Can only collapse a logic network or an AIG.\n" );
        return 1;
    }
    // get the new network
    pNtkRes = Abc_NtkShareXor( pNtk, nMultiSize, fAnd, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Cascade synthesis has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: extract [-K <num>] [-avh]\n" );
    Abc_Print( -2, "\t           extracts shared logic from multi-input gates\n" );
    Abc_Print( -2, "\t-K <num> : the minimum gate size to consider for extraction [default = %d]\n", nMultiSize );
    Abc_Print( -2, "\t-a       : toggle multi-input XOR vs multi-input AND [default = %s]\n", fAnd? "AND": "XOR" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandVarMin( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_SuppTest( int nOnes, int nVars, int fUseSimple, int fCheck, int fVerbose );
    extern void Abc_SuppReadMinTest( char * pFileName );
    int nOnes      =  4;
    int nVars      = 20;
    int fUseSimple =  0;
    int fCheck     =  0;
    int fVerbose   =  0;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "MNocvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nOnes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nOnes < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'o':
            fUseSimple ^= 1;
            break;
        case 'c':
            fCheck ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    // get the file name
    if ( argc == globalUtilOptind + 1 )
    {
        Abc_SuppReadMinTest( argv[globalUtilOptind] );
        return 0;
    }
    Abc_SuppTest( nOnes, nVars, fUseSimple, fCheck, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: varmin [-MN <num>] [-ocvh]\n" );
    Abc_Print( -2, "\t           performs support minimization\n" );
    Abc_Print( -2, "\t-M <num> : the number of ones in the combination [default = %d]\n", nOnes );
    Abc_Print( -2, "\t-N <num> : the number of variables in the problem [default = %d]\n", nVars );
    Abc_Print( -2, "\t-o       : toggle computing reduced difference matrix [default = %s]\n", fUseSimple? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggle verifying the final result [default = %s]\n", fCheck? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFaultClasses( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkDetectClassesTest( Abc_Ntk_t * pNtk, int fSeq, int fVerbose, int fVeryVerbose );
    extern void Abc_NtkGenFaultList( Abc_Ntk_t * pNtk, char * pFileName, int fStuckAt );
    Abc_Ntk_t * pNtk;
    int c, fGen = 0, fStuckAt = 0, fSeq = 0, fVerbose = 0, fVeryVerbose = 0;
    pNtk = Abc_FrameReadNtk(pAbc);
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "gcsvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'g':
            fGen ^= 1;
            break;
        case 'c':
            fStuckAt ^= 1;
            break;
        case 's':
            fSeq ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only applicable to a logic network.\n" );
        return 1;
    }
    if ( fGen )
    {
        char * pFileName = Extra_FileNameGenericAppend(Abc_NtkSpec(pNtk), "_faults.txt");
        Abc_NtkGenFaultList( pNtk, pFileName, fStuckAt );
    }
    else
        Abc_NtkDetectClassesTest( pNtk, fSeq, fVerbose, fVeryVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: faultclasses [-gcsvwh]\n" );
    Abc_Print( -2, "\t           computes equivalence classes of faults in the given mapped netlist;\n" );
    Abc_Print( -2, "\t           the fault list with faults in the format: <fault_id> <node_name> <fault_name>\n" );
    Abc_Print( -2, "\t           should be read by command \"read_fins\" before calling this command\n" );
    Abc_Print( -2, "\t-g       : toggle generating a fault list for the current mapped network [default = %s]\n", fGen? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggle using only stuck-at faults in the generated fault list [default = %s]\n", fStuckAt? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggle detecting sequential equivalence classes [default = %s]\n", fSeq? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout during computation [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing of resulting fault equivalence classes [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandExact( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManFindExact( word * pTruth, int nVars, int nFunc, int nMaxDepth, int * pArrivalTimes, int nBTLimit, int nStartGates, int fVerbose );

    int c, nMaxDepth = -1, fMakeAIG = 0, fTest = 0, fVerbose = 0, nVars = 0, nVarsTmp, nFunc = 0, nStartGates = 1, nBTLimit = 400000;
    char * p1, * p2;
    word pTruth[64];
    int pArrTimeProfile[8], fHasArrTimeProfile = 0;
    Abc_Ntk_t * pNtkRes;
    Gia_Man_t * pGiaRes;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "DASCatvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nMaxDepth = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMaxDepth < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            fHasArrTimeProfile = 1;
            p1 = p2 = argv[globalUtilOptind++];
            while ( true ) {
                if ( *p2 == ',' )
                {
                    *p2 = '\0';
                    pArrTimeProfile[nVars++] = atoi( p1 );
                    *p2++ = ',';
                    p1 = p2;
                }
                else if ( *p2 == '\0' )
                {
                    pArrTimeProfile[nVars++] = atoi( p1 );
                    break;
                }
                else
                    ++p2;
            }
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nStartGates = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nStartGates < 1 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'a':
            fMakeAIG ^= 1;
            break;
        case 't':
            fTest ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( fTest )
    {
        extern void Abc_ExactTest( int fVerbose );
        extern void Abc_ExactStoreTest( int fVerbose );

        printf( "run test suite, ignore all other settings\n" );
        Abc_ExactTest( fVerbose );
        Abc_ExactStoreTest( fVerbose );
        return 0;
    }

    if ( argc == globalUtilOptind )
        goto usage;

    memset( pTruth, 0, 64 * sizeof(word) );
    while ( globalUtilOptind < argc )
    {
        if ( nFunc == 16 )
        {
            Abc_Print( -1, "Too many functions (at most 16 supported).\n" );
            goto usage;
        }
        nVarsTmp = Abc_TtReadHex( &pTruth[nFunc << 2], argv[globalUtilOptind++] );
        nFunc++;
        if ( nVars == 0 )
            nVars = nVarsTmp;
        else if ( nVars > 8 )
        {
            Abc_Print( -1, "Only 8-variable functions are supported.\n" );
            goto usage;
        }
        else if ( nVars != nVarsTmp )
        {
            Abc_Print( -1, "All functions need to have the same size.\n" );
            goto usage;
        }
    }

    if ( fMakeAIG )
    {
        pGiaRes = Gia_ManFindExact( pTruth, nVars, nFunc, nMaxDepth, fHasArrTimeProfile ? pArrTimeProfile : NULL, nBTLimit, nStartGates - 1, fVerbose );
        if ( pGiaRes )
            Abc_FrameUpdateGia( pAbc, pGiaRes );
        else
            Abc_Print( 0, "Could not find AIG within given resource constraints, retry with different value for -C.\n" );
    }
    else
    {
        pNtkRes = Abc_NtkFindExact( pTruth, nVars, nFunc, nMaxDepth, fHasArrTimeProfile ? pArrTimeProfile : NULL, nBTLimit, nStartGates - 1, fVerbose );
        if ( pNtkRes )
        {
            Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
            Abc_FrameClearVerifStatus( pAbc );
        }
        else
            Abc_Print( 0, "Could not find network within given resource constraints, retry with different value for -C.\n" );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: exact [-DSC <num>] [-A <list>] [-atvh] <truth1> <truth2> ...\n" );
    Abc_Print( -2, "\t           finds optimum networks using SAT-based exact synthesis for hex truth tables <truth1> <truth2> ...\n" );
    Abc_Print( -2, "\t-D <num>  : constrain maximum depth (if too low, algorithm may not terminate)\n" );
    Abc_Print( -2, "\t-A <list> : input arrival times (comma separated list)\n" );
    Abc_Print( -2, "\t-S <num>  : number of start gates in search [default = %d]\n", nStartGates );
    Abc_Print( -2, "\t-C <num>  : the limit on the number of conflicts; turn off with 0 [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-a        : toggle create AIG [default = %s]\n", fMakeAIG ? "yes" : "no" );
    Abc_Print( -2, "\t-t        : run test suite\n" );
    Abc_Print( -2, "\t-v        : toggle verbose printout [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h        : print the command usage\n" );
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t            This command was contributed by Mathias Soeken from EPFL in July 2016.\n" );
    Abc_Print( -2, "\t            The author can be contacted as mathias.soeken at epfl.ch\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBmsStart( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_ExactIsRunning();
    extern void Abc_ExactStart( int nBTLimit, int fMakeAIG, int fVerbose, int fVeryVerbose, const char *pFilename );

    int c, fMakeAIG = 0, fVerbose = 0, fVeryVerbose = 0, nBTLimit = 100;
    char * pFilename = NULL;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Cavwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'a':
            fMakeAIG ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( argc > globalUtilOptind )
    {
        pFilename = argv[globalUtilOptind++];
    }

    if ( Abc_ExactIsRunning() )
    {
        Abc_Print( -1, "BMS manager is already started." );
        return 1;
    }

    Abc_ExactStart( nBTLimit, fMakeAIG, fVerbose, fVeryVerbose, pFilename );
    return 0;

usage:
    Abc_Print( -2, "usage: bms_start [-C <num>] [-avwh] [<file>]\n" );
    Abc_Print( -2, "\t           starts BMS manager for recording optimum networks\n" );
    Abc_Print( -2, "\t           if <file> is specified, store entries are read from that file\n" );
    Abc_Print( -2, "\t-C <num> : the limit on the number of conflicts [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-a       : toggle create AIG [default = %s]\n", fMakeAIG ? "yes" : "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-w       : toggle very verbose printout [default = %s]\n", fVeryVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t           This command was contributed by Mathias Soeken from EPFL in July 2016.\n" );
    Abc_Print( -2, "\t           The author can be contacted as mathias.soeken at epfl.ch\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBmsStop( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_ExactIsRunning();
    extern void Abc_ExactStop( const char *pFilename );

    int c;
    char * pFilename = NULL;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( argc > globalUtilOptind )
    {
        pFilename = argv[globalUtilOptind++];
    }

    if ( !Abc_ExactIsRunning() )
    {
        Abc_Print( -1, "BMS manager is not started." );
        return 1;
    }

    Abc_ExactStop( pFilename );
    return 0;

usage:
    Abc_Print( -2, "usage: bms_stop [-C <num>] [-vh] [<file>]\n" );
    Abc_Print( -2, "\t           stops BMS manager for recording optimum networks\n" );
    Abc_Print( -2, "\t           if <file> is specified, store entries are written to that file\n" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t           This command was contributed by Mathias Soeken from EPFL in July 2016.\n" );
    Abc_Print( -2, "\t           The author can be contacted as mathias.soeken at epfl.ch\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBmsPs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_ExactIsRunning();
    extern void Abc_ExactStats();

    int c;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( !Abc_ExactIsRunning() )
    {
        Abc_Print( -1, "BMS manager is not started." );
        return 1;
    }

    Abc_ExactStats();
    return 0;

usage:
    Abc_Print( -2, "usage: bms_ps [-h]\n" );
    Abc_Print( -2, "\t           shows statistics about BMS manager\n" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t           This command was contributed by Mathias Soeken from EPFL in July 2016.\n" );
    Abc_Print( -2, "\t           The author can be contacted as mathias.soeken at epfl.ch\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMajExact( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Maj_ManExactSynthesis( int nVars, int nNodes, int fUseConst, int fUseLine, int fVerbose );
    extern int Maj_ManExactSynthesis2( int nVars, int nNodes, int fUseConst, int fUseLine, int fUseRand, int nRands, int fVerbose );
    int c, nVars = 3, nNodes = 1, fUseConst = 0, fUseLine = 0, fGlucose = 0, fUseRand = 0, nRands = 0, fVerbose = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "INRfcrgvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nNodes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodes < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRands = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRands < 0 )
                goto usage;
            break;
        case 'f':
            fUseConst ^= 1;
            break;
        case 'c':
            fUseLine ^= 1;
            break;
        case 'r':
            fUseRand ^= 1;
            break;
        case 'g':
            fGlucose ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( (nVars & 1) == 0 )
    {
        Abc_Print( -1, "Cannot sythesize MAJ gate with an even number of inputs (%d).\n", nVars );
        return 1;
    }
    if ( fGlucose )
        Maj_ManExactSynthesis( nVars, nNodes, fUseConst, fUseLine, fVerbose );
    else
        Maj_ManExactSynthesis2( nVars, nNodes, fUseConst, fUseLine, fUseRand, nRands, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: majexact [-INR <num>] [-fcrgvh]\n" );
    Abc_Print( -2, "\t           exact synthesis of multi-input MAJ using MAJ3 gates\n" );
    Abc_Print( -2, "\t-I <num> : the number of input variables [default = %d]\n", nVars );
    Abc_Print( -2, "\t-N <num> : the number of MAJ3 nodes [default = %d]\n", nNodes );
    Abc_Print( -2, "\t-R <num> : the number of additional connections [default = %d]\n", nRands );
    Abc_Print( -2, "\t-f       : toggle using constant fanins [default = %s]\n", fUseConst ? "yes" : "no" );
    Abc_Print( -2, "\t-c       : toggle using cascade topology [default = %s]\n", fUseLine ? "yes" : "no" );
    Abc_Print( -2, "\t-r       : toggle using random topology [default = %s]\n", fUseRand ? "yes" : "no" );
    Abc_Print( -2, "\t-g       : toggle using Glucose 3.0 by Gilles Audemard and Laurent Simon [default = %s]\n", fGlucose ? "yes" : "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTwoExact( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Exa_ManExactSynthesis( Bmc_EsPar_t * pPars );
    extern void Exa_ManExactSynthesis2( Bmc_EsPar_t * pPars );
    extern void Exa_ManExactSynthesis4( Bmc_EsPar_t * pPars );
    extern void Exa_ManExactSynthesis5( Bmc_EsPar_t * pPars );
    extern void Exa_ManExactSynthesis6( Bmc_EsPar_t * pPars, char * pFileName );
    extern void Exa_ManExactSynthesis7( Bmc_EsPar_t * pPars, int GateSize );
    int c, fKissat = 0, fKissat2 = 0, fUseNands = 0, GateSize = 0;
    Bmc_EsPar_t Pars, * pPars = &Pars;
    Bmc_EsParSetDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "INTGSabdconugklmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVars < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nNodes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNodes < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->RuntimeLim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->RuntimeLim < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            GateSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( GateSize < 0 )
                goto usage;
            break;            
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a file name.\n" );
                goto usage;
            }
            pPars->pGuide = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'a':
            pPars->fOnlyAnd ^= 1;
            break;
        case 'b':
            fUseNands ^= 1;
            break;            
        case 'd':
            pPars->fDynConstr ^= 1;
            break;
        case 'c':
            pPars->fDumpCnf ^= 1;
            break;
        case 'o':
            pPars->fFewerVars ^= 1;
            break;
        case 'n':
            pPars->fOrderNodes ^= 1;
            break;
        case 'u':
            pPars->fUniqFans ^= 1;
            break;
        case 'g':
            pPars->fGlucose ^= 1;
            break;
        case 'k':
            fKissat ^= 1;
            break;
        case 'l':
            fKissat2 ^= 1;
            break;
        case 'm':
            pPars->fCard ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
    {
        if ( strstr(argv[globalUtilOptind], ".") )
        {
            Exa_ManExactSynthesis6( pPars, argv[globalUtilOptind] );
            return 0;
        }
        pPars->pTtStr = argv[globalUtilOptind];
    }
    if ( pPars->pTtStr == NULL )
    {
        Abc_Print( -1, "Truth table should be given on the command line.\n" );
        return 1;
    }
    if ( pPars->nVars >= 2 && (1 << (pPars->nVars-2)) != (int)strlen(pPars->pTtStr) )
    {
        Abc_Print( -1, "Truth table is expected to have %d hex digits (instead of %d).\n", (1 << (pPars->nVars-2)), strlen(pPars->pTtStr) );
        return 1;
    }
    if ( pPars->nVars > pPars->nNodes * (2 - 1) + 1 )
    {
        Abc_Print( -1, "Function with %d variales cannot be implemented with %d two-input gates.\n", pPars->nVars, pPars->nNodes );
        return 1;
    }
    if ( pPars->nVars > 10 )
    {
        Abc_Print( -1, "Function should not have more than 10 inputs.\n" );
        return 1;
    }
    if ( fUseNands )
        Exa_ManExactSynthesis7( pPars, GateSize );
    else if ( fKissat || pPars->fCard )
        Exa_ManExactSynthesis4( pPars );
    else if ( fKissat2 )
        Exa_ManExactSynthesis5( pPars );
    else if ( pPars->fGlucose )
        Exa_ManExactSynthesis( pPars );
    else
        Exa_ManExactSynthesis2( pPars );
    return 0;

usage:
    Abc_Print( -2, "usage: twoexact [-INTG <num>] [-S str] [-abdconugklmvh] <hex>\n" );
    Abc_Print( -2, "\t           exact synthesis of multi-input function using two-input gates\n" );
    Abc_Print( -2, "\t-I <num> : the number of input variables [default = %d]\n", pPars->nVars );
    Abc_Print( -2, "\t-N <num> : the number of two-input nodes [default = %d]\n", pPars->nNodes );
    Abc_Print( -2, "\t-T <num> : the runtime limit in seconds [default = %d]\n", pPars->RuntimeLim );
    Abc_Print( -2, "\t-G <num> : the largest allowed gate size (NANDs only) [default = %d]\n", GateSize );
    Abc_Print( -2, "\t-S <str> : structural guidance from the user [default = %s]\n", pPars->pGuide ? pPars->pGuide : "unknown" );    
    Abc_Print( -2, "\t-a       : toggle using only AND-gates (without XOR-gates) [default = %s]\n", pPars->fOnlyAnd ? "yes" : "no" );
    Abc_Print( -2, "\t-b       : toggle using only NAND-gates [default = %s]\n", fUseNands ? "yes" : "no" );
    Abc_Print( -2, "\t-d       : toggle using dynamic constraint addition [default = %s]\n", pPars->fDynConstr ? "yes" : "no" );
    Abc_Print( -2, "\t-c       : toggle dumping CNF into a file [default = %s]\n", pPars->fDumpCnf ? "yes" : "no" );
    Abc_Print( -2, "\t-o       : toggle using additional optimizations [default = %s]\n", pPars->fFewerVars ? "yes" : "no" );
    Abc_Print( -2, "\t-n       : toggle ordering internal nodes [default = %s]\n", pPars->fOrderNodes ? "yes" : "no" );
    Abc_Print( -2, "\t-u       : toggle using unique fanouts [default = %s]\n", pPars->fUniqFans ? "yes" : "no" );
    Abc_Print( -2, "\t-g       : toggle using Glucose 3.0 by Gilles Audemard and Laurent Simon [default = %s]\n", pPars->fGlucose ? "yes" : "no" );
    Abc_Print( -2, "\t-k       : toggle using Kissat by Armin Biere [default = %s]\n", fKissat ? "yes" : "no" );
    Abc_Print( -2, "\t-l       : toggle using Kissat by Armin Biere [default = %s]\n", fKissat2 ? "yes" : "no" );
    Abc_Print( -2, "\t-m       : toggle using CaDiCaL by Armin Biere [default = %s]\n", pPars->fCard ? "yes" : "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", pPars->fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    Abc_Print( -2, "\t<hex>    : truth table in hex notation\n" );
    Abc_Print( -2, "\t           \n" );
    Abc_Print( -2, "\t           For example, command line \"twoexact -g -I 5 -N 12 169AE443\"\n" );
    Abc_Print( -2, "\t           synthesizes the smallest circuit composed of two-input gates\n" );
    Abc_Print( -2, "\t           for the only NPN class of 5-input functions that requires 12 gates;\n" );
    Abc_Print( -2, "\t           all other functions can be realized with 11 two-input gates or less\n" );
    Abc_Print( -2, "\t           (see Section 7.1.2 \"Boolean evaluation\" in the book The Art of Computer Programming by Donald Knuth)\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandLutExact( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int  Exa7_ManExactSynthesis( Bmc_EsPar_t * pPars );
    extern int  Exa8_ManExactSynthesis( Bmc_EsPar_t * pPars );
    extern int  Exa8_ManExactSynthesisIter( Bmc_EsPar_t * pPars );
    extern int  Exa3_ManExactSynthesis( Bmc_EsPar_t * pPars );
    extern void Exa3_ManExactSynthesis2( Bmc_EsPar_t * pPars );
    extern void Exa3_ManExactSynthesisRand( Bmc_EsPar_t * pPars );
    extern char * Abc_NtkReadTruth( Abc_Ntk_t * pNtk );
    int c;
    Bmc_EsPar_t Pars, * pPars = &Pars;
    Bmc_EsParSetDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NMKTFUSYPiaorfgckdsmpvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVars < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nNodes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNodes < 0 )
                goto usage;
            break;
       case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->RuntimeLim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->RuntimeLim < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRandFuncs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'U':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-U\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMintNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->Seed < 0 )
                goto usage;
            break;
        case 'Y':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Y\" should be followed by a string.\n" );
                goto usage;
            }
            pPars->pSymStr = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by a string.\n" );
                goto usage;
            }
            pPars->pPermStr = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'i':
            pPars->fUseIncr ^= 1;
            break;
        case 'a':
            pPars->fOnlyAnd ^= 1;
            break;
        case 'o':
            pPars->fFewerVars ^= 1;
            break;
        case 'r':
            pPars->fLutCascade ^= 1;
            break;
        case 'f':
            pPars->fLutInFixed ^= 1;
            break;
        case 'g':
            pPars->fGlucose ^= 1;
            break;
        case 'c':
            pPars->fCadical ^= 1;
            break;
        case 'k':
            pPars->fKissat ^= 1;
            break;
        case 'd':
            pPars->fDumpBlif ^= 1;
            break;
        case 's':
            pPars->fSilent ^= 1;
            break;
        case 'm':
            pPars->fMinNodes ^= 1;
            break;
        case 'p':
            pPars->fUsePerm ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pPars->pPermStr && (pPars->nLutSize * pPars->nNodes != (int)strlen(pPars->pPermStr)) )
    {
        Abc_Print( -1, "Permutation \"%s\" has %d symbols instead of expected %d = %d * %d symbols (LutSize * nLuts).\n", 
            pPars->pPermStr, (int)strlen(pPars->pPermStr), pPars->nLutSize * pPars->nNodes, pPars->nLutSize, pPars->nNodes );
        return 1;
    }
    if ( pPars->pPermStr && !pPars->fLutCascade )
        Abc_Print( 0, "If LUT mapping is not enabled (switch \"-r\"), permutation has not effect.\n" );
    if ( argc == globalUtilOptind + 1 )
        pPars->pTtStr = argv[globalUtilOptind];
    else if ( argc == globalUtilOptind && Abc_FrameReadNtk(pAbc) )
    {
        Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
        if ( Abc_NtkCiNum(pNtk) > 30 )
        {
            Abc_Print( -1, "Cannot derive truth table from network: too many inputs (%d > 30).\n", Abc_NtkCiNum(pNtk) );
            Abc_Print( -1, "Please provide truth table on the command line or use a smaller network.\n" );
            return 1;
        }
        if ( Abc_NtkCoNum(pNtk) != 1 )
        {
            Abc_Print( -1, "Cannot derive truth table from network: network must have exactly one output (has %d).\n", Abc_NtkCoNum(pNtk) );
            return 1;
        }
        pPars->pTtStr = Abc_NtkReadTruth( pNtk );
        if ( pPars->pTtStr )
        {
            pPars->nVars = Abc_NtkCiNum(pNtk);
            Abc_Print( 0, "Derived %d-input truth table from current network.\n", pPars->nVars );
        }
        else
        {
            Abc_Print( -1, "Failed to derive truth table from current network.\n" );
            return 1;
        }
    }
    if ( pPars->pTtStr == NULL && pPars->pSymStr == NULL && pPars->nRandFuncs == 0 )
    {
        Abc_Print( -1, "Truth table should be given on the command line, or derived from current single-output network.\n" );
        return 1;
    }
    if ( pPars->nVars == 0 && pPars->pTtStr )
        pPars->nVars = 2 + Abc_Base2Log((int)strlen(pPars->pTtStr));
    if ( pPars->pTtStr && (1 << (pPars->nVars-2)) != (int)strlen(pPars->pTtStr) )
    {
        Abc_Print( -1, "Truth table is expected to have %d hex digits (instead of %d).\n", (1 << (pPars->nVars-2)), strlen(pPars->pTtStr) );
        return 1;
    }
    if ( pPars->nVars == 0 && pPars->pSymStr )
        pPars->nVars = (int)strlen(pPars->pSymStr) - 1;
    if ( pPars->pSymStr && pPars->nVars+1 != strlen(pPars->pSymStr) )
    {
        Abc_Print( -1, "The char string of the %d-variable symmetric function should have %d zeros and ones (instead of %d).\n", pPars->nVars, pPars->nVars+1, strlen(pPars->pSymStr) );
        return 1;
    }
    if ( pPars->nVars > pPars->nNodes * (pPars->nLutSize - 1) + 1 )
    {
        Abc_Print( -1, "Function with %d variales cannot be implemented with %d %d-input LUTs.\n", pPars->nVars, pPars->nNodes, pPars->nLutSize );
        return 1;
    }
    if ( pPars->fKissat || pPars->fCadical )
    {
        if ( pPars->nVars > 14 )
        {
            Abc_Print( -1, "Function should not have more than 14 inputs.\n" );
            return 1;
        }
        if ( pPars->nLutSize > 8 )
        {
            Abc_Print( -1, "Node size should not be more than 8 inputs.\n" );
            return 1;
        }
    }
    else
    {
        if ( pPars->nVars > 12 )
        {
            Abc_Print( -1, "Function should not have more than 12 inputs.\n" );
            return 1;
        }
        if ( pPars->nLutSize > 6 )
        {
            Abc_Print( -1, "Node size should not be more than 6 inputs.\n" );
            return 1;
        }
    }
    if ( pPars->nRandFuncs ) {
        pPars->fGlucose = 1;
        Exa3_ManExactSynthesisRand( pPars );
    }
    else if ( pPars->fGlucose )
        Exa3_ManExactSynthesis( pPars );
    else if ( pPars->fCadical )
        Exa7_ManExactSynthesis( pPars );
    else if ( pPars->fKissat )
        Exa8_ManExactSynthesis( pPars );
    else
        Exa3_ManExactSynthesis2( pPars );
    if ( argc == globalUtilOptind && Abc_FrameReadNtk(pAbc) )
        ABC_FREE( pPars->pTtStr );
    return 0;

usage:
    Abc_Print( -2, "usage: lutexact [-NMKTFUS <num>] [-Y string] [-P string] [-iaorfgckdsmpvh] <hex>\n" );
    Abc_Print( -2, "\t           exact synthesis of N-input function using M K-input lookup-tables\n" );
    Abc_Print( -2, "\t-N <num> : the number of input variables [default = %d]\n", pPars->nVars );
    Abc_Print( -2, "\t-M <num> : the number of K-input nodes [default = %d]\n", pPars->nNodes );
    Abc_Print( -2, "\t-K <num> : the number of node fanins [default = %d]\n", pPars->nLutSize );
    Abc_Print( -2, "\t-T <num> : the runtime limit in seconds [default = %d]\n", pPars->RuntimeLim );
    Abc_Print( -2, "\t-F <num> : the number of random functions to try [default = unused]\n" );
    Abc_Print( -2, "\t-U <num> : the number of positive minterms in the random function [default = unused]\n" );
    Abc_Print( -2, "\t-S <num> : the random seed for random function generation with -F <num> [default = %d]\n", pPars->Seed );
    Abc_Print( -2, "\t-Y <str> : charasteristic string of a symmetric function [default = %s]\n", pPars->pSymStr ? pPars->pSymStr : "unused" );
    Abc_Print( -2, "\t-P <str> : variable permutation (for example, \"abcd_aef\" for S44) [default = %s]\n", pPars->pPermStr ? pPars->pPermStr : "unused" );
    Abc_Print( -2, "\t-i       : toggle using incremental solving [default = %s]\n", pPars->fUseIncr ? "yes" : "no" );
    Abc_Print( -2, "\t-a       : toggle using only AND-gates when K = 2 [default = %s]\n", pPars->fOnlyAnd ? "yes" : "no" );
    Abc_Print( -2, "\t-o       : toggle using additional optimizations [default = %s]\n", pPars->fFewerVars ? "yes" : "no" );
    Abc_Print( -2, "\t-r       : toggle synthesizing a single-rail cascade [default = %s]\n", pPars->fLutCascade ? "yes" : "no" );
    Abc_Print( -2, "\t-f       : toggle fixing LUT inputs in cascade mapping [default = %s]\n", pPars->fLutInFixed ? "yes" : "no" );
    Abc_Print( -2, "\t-g       : toggle using Glucose 3.0 by Gilles Audemard and Laurent Simon [default = %s]\n", pPars->fGlucose ? "yes" : "no" );
    Abc_Print( -2, "\t-c       : toggle using CaDiCal 2.2.0-rc1 by Armin Biere et al [default = %s]\n", pPars->fCadical ? "yes" : "no" );
    Abc_Print( -2, "\t-k       : toggle using Kissat 4.0.2 by Armin Biere [default = %s]\n", pPars->fKissat ? "yes" : "no" );
    Abc_Print( -2, "\t-d       : toggle dumping decomposed networks into BLIF files [default = %s]\n", pPars->fDumpBlif ? "yes" : "no" );
    Abc_Print( -2, "\t-s       : toggle silent computation (no messages, except when a solution is found) [default = %s]\n", pPars->fSilent ? "yes" : "no" );
    Abc_Print( -2, "\t-m       : toggle minimum-node solution possibly smaller than \"-M <num>\" [default = %s]\n", pPars->fMinNodes ? "yes" : "no" );
    Abc_Print( -2, "\t-p       : toggle use specialized permutation when minimizing nodes [default = %s]\n", pPars->fUsePerm ? "yes" : "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", pPars->fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    Abc_Print( -2, "\t<hex>    : truth table in hex notation\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAndExact( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Exa9_ManExactSynthesis( Bmc_EsPar_t * pPars );
    extern int Exa9_ManExactSynthesisIter( Bmc_EsPar_t * pPars );
    extern char * Abc_NtkReadTruth( Abc_Ntk_t * pNtk );
    int c;
    Bmc_EsPar_t Pars, * pPars = &Pars;
    Bmc_EsParSetDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NMTSHYiadsmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVars < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nNodes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNodes < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->RuntimeLim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->RuntimeLim < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->Seed < 0 )
                goto usage;
            break;
        case 'H':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-H\" should be followed by a string.\n" );
                goto usage;
            }
            pPars->n1HotAlgo = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'Y':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Y\" should be followed by a string.\n" );
                goto usage;
            }
            pPars->pSymStr = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'i':
            pPars->fUseIncr ^= 1;
            break;
        case 'a':
            pPars->fOnlyAnd ^= 1;
            break;
        case 'd':
            pPars->fDumpBlif ^= 1;
            break;
        case 's':
            pPars->fSilent ^= 1;
            break;
        case 'm':
            pPars->fMinNodes ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
        pPars->pTtStr = argv[globalUtilOptind];
    else if ( argc == globalUtilOptind && Abc_FrameReadNtk(pAbc) ) 
    {
        pPars->pTtStr = Abc_NtkReadTruth( Abc_FrameReadNtk(pAbc) );
        if ( pPars->pTtStr )  
            pPars->nVars = Abc_NtkCiNum(Abc_FrameReadNtk(pAbc));
    }
    if ( pPars->pTtStr == NULL && pPars->pSymStr == NULL && pPars->nRandFuncs == 0 )
    {
        Abc_Print( -1, "Truth table should be given on the command line.\n" );
        return 1;
    }
    if ( pPars->nVars == 0 && pPars->pTtStr )
        pPars->nVars = 2 + Abc_Base2Log((int)strlen(pPars->pTtStr));
    if ( pPars->pTtStr && (1 << (pPars->nVars-2)) != (int)strlen(pPars->pTtStr) )
    {
        Abc_Print( -1, "Truth table is expected to have %d hex digits (instead of %d).\n", (1 << (pPars->nVars-2)), strlen(pPars->pTtStr) );
        return 1;
    }
    if ( pPars->nVars == 0 && pPars->pSymStr )
        pPars->nVars = (int)strlen(pPars->pSymStr) - 1;
    if ( pPars->pSymStr && pPars->nVars+1 != strlen(pPars->pSymStr) )
    {
        Abc_Print( -1, "The char string of the %d-variable symmetric function should have %d zeros and ones (instead of %d).\n", pPars->nVars, pPars->nVars+1, strlen(pPars->pSymStr) );
        return 1;
    }
    if ( pPars->nVars > pPars->nNodes + 1 )
    {
        Abc_Print( -1, "Function with %d variales cannot be implemented with %d two-input nodes.\n", pPars->nVars, pPars->nNodes );
        return 1;
    }
    if ( pPars->nVars > 14 )
    {
        Abc_Print( -1, "Function should not have more than 14 inputs.\n" );
        return 1;
    }
    if ( pPars->nNodes > 16 )
    {
        Abc_Print( -1, "Node count cannot be more than 16 inputs.\n" );
        return 1;
    }
    if ( pPars->fMinNodes )
        Exa9_ManExactSynthesisIter( pPars );
    else
        Exa9_ManExactSynthesis( pPars );
    if ( argc == globalUtilOptind && Abc_FrameReadNtk(pAbc) )
        ABC_FREE( pPars->pTtStr );
    return 0;

usage:
    Abc_Print( -2, "usage: andexact [-NMTSH <num>] [-Y str] [-iadmsvh] <hex>\n" );
    Abc_Print( -2, "\t           exact synthesis of N-input function using two-input gates\n" );
    Abc_Print( -2, "\t-N <num> : the number of input variables [default = %d]\n", pPars->nVars );
    Abc_Print( -2, "\t-M <num> : the number of two-input nodes [default = %d]\n", pPars->nNodes );
    Abc_Print( -2, "\t-T <num> : the runtime limit in seconds [default = %d]\n", pPars->RuntimeLim );
    Abc_Print( -2, "\t-S <num> : the random seed for random function generation with -F <num> [default = %d]\n", pPars->Seed );
    Abc_Print( -2, "\t-H <num> : the 1-hotness algorithm used (0 = naive; 1 = seq; 2 = bim; 3 = cmd) [default = %d]\n", pPars->n1HotAlgo );
    Abc_Print( -2, "\t-Y <str> : charasteristic string of a symmetric function [default = %s]\n", pPars->pSymStr ? pPars->pSymStr : "unused" );
    Abc_Print( -2, "\t-i       : toggle using incremental SAT (CEGAR over minterms) [default = %s]\n", pPars->fUseIncr ? "yes" : "no" );
    Abc_Print( -2, "\t-a       : toggle using only AND-gates when K = 2 [default = %s]\n", pPars->fOnlyAnd ? "yes" : "no" );
    Abc_Print( -2, "\t-m       : toggle minimum-node solution possibly smaller than \"-M <num>\" [default = %s]\n", pPars->fMinNodes ? "yes" : "no" );
    Abc_Print( -2, "\t-d       : toggle dumping decomposed networks into BLIF files [default = %s]\n", pPars->fDumpBlif ? "yes" : "no" );
    Abc_Print( -2, "\t-s       : toggle silent computation (no messages, except when a solution is found) [default = %s]\n", pPars->fSilent ? "yes" : "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", pPars->fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    Abc_Print( -2, "\t<hex>    : truth table in hex notation\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAllExact( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Zyx_ManExactSynthesis( Bmc_EsPar_t * pPars );
    int c;
    Bmc_EsPar_t Pars, * pPars = &Pars;
    Bmc_EsParSetDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "MINKianegvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMajSupp = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMajSupp < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVars < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nNodes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNodes < 0 )
                goto usage;
            break;
       case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 0 )
                goto usage;
            break;
        case 'i':
            pPars->fUseIncr ^= 1;
            break;
        case 'a':
            pPars->fOnlyAnd ^= 1;
            break;
        case 'n':
            pPars->fOrderNodes ^= 1;
            break;
        case 'e':
            pPars->fEnumSols ^= 1;
            break;
        case 'g':
            pPars->fGlucose ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pPars->nMajSupp > 0 )
    {
        if ( pPars->nMajSupp != 5 && pPars->nMajSupp != 7 && pPars->nMajSupp != 9 )
        {
            Abc_Print( -1, "Currently only support majority with 5, 7 or 9 inputs.\n" );
            return 1;
        }
        pPars->nVars = pPars->nMajSupp;
        pPars->nLutSize = 3;
        pPars->fMajority = 1;
        pPars->fUseIncr = 1;
        if ( pPars->nNodes == 0 )
        {
            if ( pPars->nMajSupp == 5 )
                pPars->nNodes = 4;
            if ( pPars->nMajSupp == 7 )
                pPars->nNodes = 7;
            if ( pPars->nMajSupp == 9 )
                pPars->nNodes = 10;
        }
    }
    else
    {
        if ( pPars->nVars == 0 )
        {
            Abc_Print( -1, "The number of variables (-I num) needs to be specified on the command line.\n" );
            return 1;
        }
        if ( pPars->nNodes == 0 )
        {
            Abc_Print( -1, "The number of nodes (-N num) needs to be specified on the command line.\n" );
            return 1;
        }
        if ( argc == globalUtilOptind + 1 )
            pPars->pTtStr = argv[globalUtilOptind];
        if ( pPars->pTtStr == NULL )
        {
            Abc_Print( -1, "Truth table should be given on the command line.\n" );
            return 1;
        }
        if ( (1 << (pPars->nVars-2)) != (int)strlen(pPars->pTtStr) )
        {
            Abc_Print( -1, "Truth table is expected to have %d hex digits (instead of %d).\n", (1 << (pPars->nVars-2)), strlen(pPars->pTtStr) );
            return 1;
        }
    }
    if ( pPars->nVars > pPars->nNodes * (pPars->nLutSize - 1) + 1 )
    {
        Abc_Print( -1, "Function with %d variales cannot be implemented with %d %d-input LUTs.\n", pPars->nVars, pPars->nNodes, pPars->nLutSize );
        return 1;
    }
    if ( pPars->nVars > 10 )
    {
        Abc_Print( -1, "Function should not have more than 10 inputs.\n" );
        return 1;
    }
    if ( pPars->nLutSize > 6 )
    {
        Abc_Print( -1, "Node size should not be more than 6 inputs.\n" );
        return 1;
    }
    if ( !pPars->fUseIncr )
    {
        if ( pPars->fMajority )
        {
            Abc_Print( -1, "Cannot synthesize majority in the non-incremental mode (use \'-i\').\n" );
            return 1;
        }
        if ( pPars->nLutSize > 3 )
        {
            Abc_Print( -1, "Cannot synthesize LUT4 and larger in non-incremental mode (use \'-i\').\n" );
            return 1;
        }
    }
    Zyx_ManExactSynthesis( pPars );
    return 0;

usage:
    Abc_Print( -2, "usage: allexact [-MIKN <num>] [-ianevh] <hex>\n" );
    Abc_Print( -2, "\t           exact synthesis of I-input function using N K-input gates\n" );
    Abc_Print( -2, "\t-M <num> : the majority support size (overrides -I and -K) [default = %d]\n", pPars->nMajSupp );
    Abc_Print( -2, "\t-I <num> : the number of input variables [default = %d]\n", pPars->nVars );
    Abc_Print( -2, "\t-K <num> : the number of node fanins [default = %d]\n", pPars->nLutSize );
    Abc_Print( -2, "\t-N <num> : the number of K-input nodes [default = %d]\n", pPars->nNodes );
    Abc_Print( -2, "\t-i       : toggle using incremental solving [default = %s]\n", pPars->fUseIncr ? "yes" : "no" );
    Abc_Print( -2, "\t-a       : toggle using only AND-gates when K = 2 [default = %s]\n", pPars->fOnlyAnd ? "yes" : "no" );
    Abc_Print( -2, "\t-n       : toggle using node ordering by fanins [default = %s]\n", pPars->fOrderNodes ? "yes" : "no" );
    Abc_Print( -2, "\t-e       : toggle enumerating all solutions [default = %s]\n", pPars->fEnumSols ? "yes" : "no" );
//    Abc_Print( -2, "\t-g       : toggle using Glucose 3.0 by Gilles Audemard and Laurent Simon [default = %s]\n", pPars->fGlucose ? "yes" : "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", pPars->fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    Abc_Print( -2, "\t<hex>    : truth table in hex notation\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTopoExact( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkTopoExact( Abc_Ntk_t * pFunc, Abc_Ntk_t * pTopo, int nTimeOut, int nSeed, int fAndGates, int fVerbose );
    Abc_Ntk_t * pNtkRes = NULL;
    Abc_Ntk_t * pTopo = NULL;
    int nTimeOut = 0;    
    int nSeed = 0;
    char * pFileName = NULL;
    int c, fAndGates = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "TSavh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSeed < 0 )
                goto usage;
            break;
       case 'a':
            fAndGates ^= 1;
            break;
       case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pNtkCur == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pAbc->pNtkCur) )
    {
        Abc_Print( -1, "This command expect an AIG as the current network and BLIF file on the command line.\n" );
        return 1;
    }
    if ( argc == globalUtilOptind + 1 )
        pFileName = argv[globalUtilOptind];
    if ( pFileName == NULL )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    pTopo = Io_Read( pFileName, Io_ReadFileType(pFileName), 1, 0 );
    if ( pTopo == NULL ) 
    {
        Abc_Print( -1, "The topology file is not specified on the command line.\n" );
        return 1;
    }
    if ( Abc_NtkGetFaninMax(pTopo) > 6 )
    {
        Abc_NtkDelete( pTopo );
        Abc_Print( -1, "The topology network has nodes with more than 6 inputs.\n" );
        return 1;
    }
    if ( Abc_NtkCiNum(pAbc->pNtkCur) != Abc_NtkCiNum(pTopo) )
    {
        Abc_NtkDelete( pTopo );
        Abc_Print( -1, "The number of combinational inputs of the networks does not match.\n" );
        return 1;
    }
    if ( Abc_NtkCoNum(pAbc->pNtkCur) != Abc_NtkCoNum(pTopo) )
    {
        Abc_NtkDelete( pTopo );
        Abc_Print( -1, "The number of combinational outputs of the networks does not match.\n" );
        return 1;
    }
    pTopo = Abc_NtkDupDfs( pNtkRes = pTopo );
    Abc_NtkDelete( pNtkRes );
    pNtkRes = Abc_NtkTopoExact( pAbc->pNtkCur, pTopo, nTimeOut, nSeed, fAndGates, fVerbose );
    Abc_NtkDelete( pTopo );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );    
    return 0;

usage:
    Abc_Print( -2, "usage: topoexact [-TS num] [-avh] <file>\n" );
    Abc_Print( -2, "\t           exact synthesis solution for the fixed topology\n" );
    Abc_Print( -2, "\t-T <num> : the runtime limit in seconds [default = %d]\n", nTimeOut );
    Abc_Print( -2, "\t-S <num> : the random seed to randomize the SAT solver [default = %d]\n", nSeed );
    Abc_Print( -2, "\t-a       : toggle using only and-gates (not xor-gates) [default = %s]\n", fAndGates ? "yes" : "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    Abc_Print( -2, "\t<file>   : BLIF file name with the topology\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandNetExact( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Tn_ReadHexTruth( char * pInput, word * pTruth );
    extern void Tn_SolveProblem( int nIns, int nOuts, word * pOuts, char * pTypes, int nEdgeLimit, int nLevelLimit, int nSolsMax, int Seed, int TimeOut, int fVerbose );
    int c, nIns = 0, nOuts = 0, nEdgeLimit = 0, nLevelLimit = 0, nSolsMax = 1, Seed = 0, TimeOut = 0, fVerbose = 0;
    char * pTypes = NULL;  
    word Truths[16] = {0};    
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CELNSTVvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pTypes = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by an integer.\n" );
                goto usage;
            }
            nEdgeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nEdgeLimit < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevelLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevelLimit < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nSolsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSolsMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeOut < 0 )
                goto usage;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            fVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( fVerbose < 0 )
                goto usage;
            break;
       case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    for ( c = globalUtilOptind; c < argc; c++ ) {
        if ( Abc_TtIsHexDigit(argv[c][0]) == -1 ) {
            Abc_Print( -1, "Cannot read truth table \"%s\".\n", argv[c] );
            goto usage;
        }
        int nVarsOut = Tn_ReadHexTruth( argv[c], Truths + nOuts++ );
        if ( nIns == 0 )
            nIns = nVarsOut;
        else if ( nIns != nVarsOut ) {
            Abc_Print( -1, "The support size of output functions is not the same.\n" ); 
            goto usage;
        }
    }

    printf( "Finished reading %d output%s\n\n", nOuts, nOuts == 1 ? "" : "s" );
    Tn_SolveProblem( nIns, nOuts, Truths, pTypes, nEdgeLimit, nLevelLimit, nSolsMax, Seed, TimeOut, fVerbose );    
    return 0;

usage:

    Abc_Print( -2, "usage: netexact -C <str> [-ELNSTV <num>] <truth[0]> ... <truth[m-1]>\n" );
    Abc_Print( -2, "                   this program synthesizes networks for multi-output functions\n" );
    Abc_Print( -2, "\n" );     
    Abc_Print( -2, "      -C <str>  :  the configuration string (no default)\n" );
    Abc_Print( -2, "      -E <num>  :  the max number of edges (default = no limit)\n" );
    Abc_Print( -2, "      -L <num>  :  the max number of levels (default = no limit)\n" );        
    Abc_Print( -2, "      -N <num>  :  the max number of solutions (default = 1)\n" );        
    Abc_Print( -2, "      -S <num>  :  the random seed (default = 0)\n" );        
    Abc_Print( -2, "      -T <num>  :  the timeout in seconds (default = no timeout)\n" );                
    Abc_Print( -2, "      -V <num>  :  the verbosiness levels (default = %d)\n", fVerbose );             
    Abc_Print( -2, "    <truth[0]>  :  the truth table of the first output in the hexadecimal notation\n" );
    Abc_Print( -2, "  <truth[m-1]>  :  the truth table of the last output in the hexadecimal notation\n" );
    Abc_Print( -2, "                   the truth tables are assumed to depend on the same variables\n" );
    Abc_Print( -2, "                   the strings should contain 2^(<num_inputs>-2) hexadecimal digits\n" );
    Abc_Print( -2, "\n" );        
    Abc_Print( -2, "                   Example 1: Synthesizing 3-node 2-edge 2-input and-gate:\n" );
    Abc_Print( -2, "                     %s -C *11** -E 2  8\n", argv[0] );
    Abc_Print( -2, "                   Example 2: Synthesizing 4-node 5-edge 3-input majority gate:\n" );
    Abc_Print( -2, "                     %s -C *111*** -E 5  E8\n", argv[0] );        
    Abc_Print( -2, "                   Example 3: Synthesizing 10-edge 3-input 2-output full-adder:\n" );
    Abc_Print( -2, "                     %s -C *222****** -E 10  E8 96\n", argv[0] );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestExact( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Zyx_TestExact( char * pFileName );
    char * pFileName = NULL;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
       case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
        pFileName = argv[globalUtilOptind];
    if ( pFileName == NULL )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    Zyx_TestExact( pFileName );
    return 0;

usage:
    Abc_Print( -2, "usage: testexact <file>\n" );
    Abc_Print( -2, "\t           tests solution of the exact synthesis problem\n" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    Abc_Print( -2, "\t<file>   : file name in the specified format\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMajGen( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Gem_Enumerate( int nVars, int fDump, int fVerbose );
    int c, nVars = 8, fDump = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ndvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'd':
            fDump ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    Gem_Enumerate( nVars, fDump, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: majgen [-N <num>] [-dvh]>\n" );
    Abc_Print( -2, "\t           generates networks for majority gates\n" );
    Abc_Print( -2, "\t-N <num> : the maximum number of variables [default = %d]\n", nVars );
    Abc_Print( -2, "\t-d       : toggle dumping functions into a file [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-v       : toggle verbose printout [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandLogic( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash( pNtk ) )
    {
        Abc_Print( -1, "This command is only applicable to strashed networks.\n" );
        return 1;
    }

    // get the new network
    pNtkRes = Abc_NtkToLogic( pNtk );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Converting to a logic network has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: logic [-h]\n" );
    Abc_Print( -2, "\t        transforms an AIG into a logic network with SOPs\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandComb( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fRemoveLatches;
    int nLatchesToAdd;
    extern void Abc_NtkMakeSeq( Abc_Ntk_t * pNtk, int nLatchesToAdd );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fRemoveLatches = 0;
    nLatchesToAdd = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Llh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLatchesToAdd = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLatchesToAdd < 0 )
                goto usage;
            break;
        case 'l':
            fRemoveLatches ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsComb(pNtk) && nLatchesToAdd == 0 )
    {
        Abc_Print( -1, "The network is already combinational.\n" );
        return 0;
    }
    if ( !Abc_NtkIsComb(pNtk) && nLatchesToAdd != 0 )
    {
        Abc_Print( -1, "The network is already combinational.\n" );
        return 0;
    }

    // get the new network
    pNtkRes = Abc_NtkDup( pNtk );
    if ( nLatchesToAdd )
        Abc_NtkMakeSeq( pNtkRes, nLatchesToAdd );
    else
        Abc_NtkMakeComb( pNtkRes, fRemoveLatches );
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: comb [-L <num>] [-lh]\n" );
    Abc_Print( -2, "\t           converts comb network into seq, and vice versa\n" );
    Abc_Print( -2, "\t-L <num> : number of latches to add to comb network (0 = do not add) [default = %d]\n", nLatchesToAdd );
    Abc_Print( -2, "\t-l       : toggle converting latches to PIs/POs or removing them [default = %s]\n", fRemoveLatches? "remove": "convert" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMiter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char Buffer[32];
    Abc_Ntk_t * pNtk, * pNtk1, * pNtk2, * pNtkRes;
    int fDelete1, fDelete2;
    char ** pArgvNew;
    int nArgcNew;
    int c;
    int fCheck;
    int fComb;
    int fImplic;
    int fMulti;
    int nPartSize;
    int fTrans;
    int fIgnoreNames;

    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    fComb  = 0;
    fCheck = 1;
    fImplic = 0;
    fMulti = 0;
    nPartSize = 0;
    fTrans = 0;
    fIgnoreNames = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Pcmitnh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nPartSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPartSize < 0 )
                goto usage;
            break;
        case 'c':
            fComb ^= 1;
            break;
        case 'm':
            fMulti ^= 1;
            break;
        case 'i':
            fImplic ^= 1;
            break;
        case 't':
            fTrans ^= 1;
            break;
        case 'n':
            fIgnoreNames ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( fTrans )
    {
        if ( (Abc_NtkPoNum(pNtk) & 1) == 1 )
        {
            Abc_Print( -1, "Abc_CommandMiter(): The number of outputs should be even.\n" );
            return 0;
        }
        // replace the current network
        pNtkRes = Abc_NtkDupTransformMiter( pNtk );
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
        Abc_Print( 1, "The miter (current network) is transformed by XORing POs pair-wise.\n" );
        return 0;
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( !Abc_NtkPrepareTwoNtks( stdout, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2, 1 ) )
        return 1;

    if ( fIgnoreNames )
    {
        if ( !fDelete1 )
        {
            pNtk1 = Abc_NtkStrash( pNtk1, 0, 1, 0 );
            fDelete1 = 1;
        }
        if ( !fDelete2 )
        {
            pNtk2 = Abc_NtkStrash( pNtk2, 0, 1, 0 );
            fDelete2 = 1;
        }
        Abc_NtkShortNames( pNtk1 );
        Abc_NtkShortNames( pNtk2 );
    }
    // compute the miter
    pNtkRes = Abc_NtkMiter( pNtk1, pNtk2, fComb, nPartSize, fImplic, fMulti );
    if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
    if ( fDelete2 ) Abc_NtkDelete( pNtk2 );

    // get the new network
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Miter computation has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    if ( nPartSize == 0 )
        strcpy( Buffer, "unused" );
    else
        sprintf(Buffer, "%d", nPartSize );
    Abc_Print( -2, "usage: miter [-P <num>] [-cimtnh] <file1> <file2>\n" );
    Abc_Print( -2, "\t           computes the miter of the two circuits\n" );
    Abc_Print( -2, "\t-P <num> : output partition size [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-c       : toggles deriving combinational miter (latches as POs) [default = %s]\n", fComb? "yes": "no" );
    Abc_Print( -2, "\t-i       : toggles deriving implication miter (file1 => file2) [default = %s]\n", fImplic? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggles creating multi-output miter [default = %s]\n", fMulti? "yes": "no" );
    Abc_Print( -2, "\t-t       : toggle XORing pair-wise POs of the miter [default = %s]\n", fTrans? "yes": "no" );
    Abc_Print( -2, "\t-n       : toggle ignoring names when matching CIs/COs [default = %s]\n", fIgnoreNames? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\tfile1    : (optional) the file with the first network\n");
    Abc_Print( -2, "\tfile2    : (optional) the file with the second network\n");
    Abc_Print( -2, "\t           if no files are given, uses the current network and its spec\n");
    Abc_Print( -2, "\t           if one file is given, uses the current network and the file\n\n");
    Abc_Print( -2, "\t           Please note that, when used without \"-n\", this command tries to match\n" );
    Abc_Print( -2, "\t           primary inputs by name and, to achieve this, it will order them alphabetically,\n" );
    Abc_Print( -2, "\t           which results in incorrect QBF miters and confusing counter-examples.\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMiter2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Vec_Ptr_t * Abc_NtkReadNodeNames( Abc_Ntk_t * pNtk, char * pFileName );
    extern Abc_Ntk_t * Abc_NtkSpecialMiter( Abc_Ntk_t * pNtk, Vec_Ptr_t * vNodes );

    Abc_Ntk_t * pNtk, * pNtkRes;
    Vec_Ptr_t * vNodes;
    char * pFileName;
    int c, fVerbose = 0;
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    // get the second network
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "The file with node names is not given.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "The base network should be logic network from BLIF file.\n" );
        return 1;
    }
    // read the second network
    pFileName = argv[globalUtilOptind];
    if ( (vNodes = Abc_NtkReadNodeNames(pNtk, pFileName)) == NULL )
    {
        Abc_Print( -1, "Cannot read node names from file \"%s\".\n", pFileName );
        return 1;
    }
    pNtkRes = Abc_NtkSpecialMiter( pNtk, vNodes );
    Vec_PtrFree( vNodes );
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: miter2 [-h] <file>\n" );
    Abc_Print( -2, "\t         derives specialized miter\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file name with node names\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDemiter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c, fDual, fVerbose;
    extern int Abc_NtkDarDemiter( Abc_Ntk_t * pNtk );
    extern int Abc_NtkDarDemiterDual( Abc_Ntk_t * pNtk, int fVerbose );
    // set defaults
    fDual = 0;
    fVerbose = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "dvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'd':
            fDual ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "The network is not strashed.\n" );
        return 1;
    }

    if ( fDual )
    {
        if ( (Abc_NtkPoNum(pNtk) & 1) )
        {
            Abc_Print( -1, "The number of POs should be even.\n" );
            return 0;
        }
        if ( !Abc_NtkDarDemiterDual( pNtk, fVerbose ) )
        {
            Abc_Print( -1, "Demitering has failed.\n" );
            return 1;
        }
        return 0;
    }
/*
    if ( Abc_NtkPoNum(pNtk) != 1 )
    {
        Abc_Print( -1, "The network is not a single-output miter.\n" );
        return 1;
    }
    if ( !Abc_NodeIsExorType(Abc_ObjFanin0(Abc_NtkPo(pNtk,0))) )
    {
        Abc_Print( -1, "The miter's PO is not an EXOR.\n" );
        return 1;
    }
    if ( !Abc_NtkDemiter( pNtk ) )
    {
        Abc_Print( -1, "Demitering has failed.\n" );
        return 1;
    }
*/
    // get the new network
    if ( !Abc_NtkDarDemiter( pNtk ) )
    {
        Abc_Print( -1, "Demitering has failed.\n" );
        return 1;
    }
    // replace the current network
//    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: demiter [-dvh]\n" );
    Abc_Print( -2, "\t        splits sequential miter into two circuits\n" );
    Abc_Print( -2, "\t-d    : expects a dual-output miter (without XORs) [default = %s]\n", fDual? "yes": "no" );
    Abc_Print( -2, "\t-v    : toggles outputting verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandOrPos( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);//, * pNtkRes;
    int fReverse = 0;
    int fComb = 0;
    int fXor = 0;
    int c;
    extern int Abc_NtkCombinePos( Abc_Ntk_t * pNtk, int fAnd, int fXor );

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "rxh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'r':
            fReverse ^= 1;
            break;
        case 'x':
            fXor ^= 1;
            break;
        case 'c':
            fComb ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "The network is not strashed.\n" );
        return 1;
    }
    // get the new network
    if ( fReverse )
    {
        extern Aig_Man_t * Abc_NtkToDarBmc( Abc_Ntk_t * pNtk, Vec_Int_t ** pvMap );
        Aig_Man_t * pMan = Abc_NtkToDarBmc( pNtk, NULL );
        Abc_Ntk_t * pNtkRes = Abc_NtkFromAigPhase( pMan );
        Aig_ManStop( pMan );
        // perform expansion
        if ( Abc_NtkPoNum(pNtk) != Abc_NtkPoNum(pNtkRes) )
            Abc_Print( 1,"Expanded %d outputs into %d outputs using OR decomposition.\n", Abc_NtkPoNum(pNtk), Abc_NtkPoNum(pNtkRes) );
        else
            Abc_Print( 1,"The output(s) cannot be structurally decomposed.\n" );
        // clear counter-example
        if ( pAbc->pCex )
            ABC_FREE( pAbc->pCex );
        // replace the current network
        ABC_FREE( pNtkRes->pName );
        pNtkRes->pName = Extra_UtilStrsav(pNtk->pName);
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    }
    else
    {
        if ( !Abc_NtkCombinePos( pNtk, 0, fXor ) )
        {
            Abc_Print( -1, "ORing the POs has failed.\n" );
            return 1;
        }
        // update counter-example
        if ( pAbc->pCex )
            pAbc->pCex->iPo = 0;
        // replace the current network
    //    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: orpos [-rxh]\n" );
    Abc_Print( -2, "\t        creates single-output miter by ORing the POs of the current network\n" );
    Abc_Print( -2, "\t-r    : performs the reverse transform (OR decomposition) [default = %s]\n", fReverse? "yes": "no" );
    Abc_Print( -2, "\t-x    : toggles combining the PO using XOR [default = %s]\n", fXor? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAndPos( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);//, * pNtkRes;
    int fComb = 0;
    int c;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ch" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fComb ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "The network is not strashed.\n" );
        return 1;
    }

    if ( Abc_NtkPoNum(pNtk) == 1 )
    {
        Abc_Print( -1, "The network already has one PO.\n" );
        return 1;
    }

    if ( Abc_NtkLatchNum(pNtk) )
    {
        Abc_Print( -1, "The miter has latches. ORing is not performed.\n" );
        return 1;
    }

    // get the new network
    if ( !Abc_NtkCombinePos( pNtk, 1, 0 ) )
    {
        Abc_Print( -1, "ANDing the POs has failed.\n" );
        return 1;
    }
    // replace the current network
//    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: andpos [-h]\n" );
    Abc_Print( -2, "\t        creates single-output miter by ANDing the POs of the current network\n" );
//    Abc_Print( -2, "\t-c    : computes combinational miter (latches as POs) [default = %s]\n", fComb? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandZeroPo( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);//, * pNtkRes = NULL;
    int c, iOutput = -1;
    int fSkipSweep = 0;
    int fUseConst1 = 0;
    extern void Abc_NtkDropOneOutput( Abc_Ntk_t * pNtk, int iOutput, int fSkipSweep, int fUseConst1 );

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nsoh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            iOutput = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iOutput < 0 )
                goto usage;
            break;
        case 's':
            fSkipSweep ^= 1;
            break;
        case 'o':
            fUseConst1 ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "The network is not strashed.\n" );
        return 1;
    }
    if ( iOutput < 0 )
    {
        Abc_Print( -1, "The output index is not specified.\n" );
        return 1;
    }
    if ( iOutput >= Abc_NtkPoNum(pNtk) )
    {
        Abc_Print( -1, "The output index is larger than the allowed POs.\n" );
        return 1;
    }

    // get the new network
//    pNtkRes = Abc_NtkDup( pNtk );
//    Abc_NtkDropOneOutput( pNtkRes, iOutput );
//    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    Abc_NtkDropOneOutput( pNtk, iOutput, fSkipSweep, fUseConst1 );
    return 0;

usage:
    Abc_Print( -2, "usage: zeropo [-N <num>] [-soh]\n" );
    Abc_Print( -2, "\t           replaces the PO driver by constant 0\n" );
    Abc_Print( -2, "\t-N <num> : the zero-based index of the PO to replace [default = %d]\n", iOutput );
    Abc_Print( -2, "\t-s       : performs comb sweep after removimg a PO [default = %s]\n", !fSkipSweep? "yes": "no" );
    Abc_Print( -2, "\t-o       : toggles using const 1 instead of const 0 [default = %s]\n", fUseConst1? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSwapPos( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pNtkRes;
    int c, iOutput = -1;
    extern void Abc_NtkSwapOneOutput( Abc_Ntk_t * pNtk, int iOutput );

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            iOutput = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iOutput < 0 )
                goto usage;
            break;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "The network is not strashed.\n" );
        return 1;
    }
    if ( iOutput < 0 )
    {
        Abc_Print( -1, "The output index is not specified.\n" );
        return 1;
    }
    if ( iOutput >= Abc_NtkPoNum(pNtk) )
    {
        Abc_Print( -1, "The output index is larger than the allowed POs.\n" );
        return 1;
    }

    // get the new network
    pNtkRes = Abc_NtkDup( pNtk );
    Abc_NtkSwapOneOutput( pNtkRes, iOutput );
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: swappos [-N <num>] [-h]\n" );
    Abc_Print( -2, "\t           swap the 0-th PO with the <num>-th PO\n" );
    Abc_Print( -2, "\t-N <num> : the zero-based index of the PO to swap [default = %d]\n", iOutput );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRemovePo( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);//, * pNtkRes = NULL;
    int c, iOutput = -1;
    int fRemoveConst0 = 1;
    extern void Abc_NtkRemovePo( Abc_Ntk_t * pNtk, int iOutput, int fRemoveConst0 );

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nzh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            iOutput = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iOutput < 0 )
                goto usage;
            break;
        case 'z':
            fRemoveConst0 ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "The network is not strashed.\n" );
        return 1;
    }
    if ( iOutput < 0 )
    {
        Abc_Print( -1, "The output index is not specified.\n" );
        return 1;
    }
    if ( iOutput >= Abc_NtkPoNum(pNtk) )
    {
        Abc_Print( -1, "The output index is larger than the allowed POs.\n" );
        return 1;
    }

    // get the new network
//    pNtkRes = Abc_NtkDup( pNtk );
//    Abc_NtkRemovePo( pNtkRes, iOutput );
//    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    Abc_NtkRemovePo( pNtk, iOutput, fRemoveConst0 );
    return 0;

usage:
    Abc_Print( -2, "usage: removepo [-N <num>] [-zh]\n" );
    Abc_Print( -2, "\t           remove PO with number <num> if it is const0\n" );
    Abc_Print( -2, "\t-N <num> : the zero-based index of the PO to remove [default = %d]\n", iOutput );
    Abc_Print( -2, "\t-z       : toggle removing const1 instead of const0 [default = %s]\n", fRemoveConst0? "const0": "const1" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDropSat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkDropSatOutputs( Abc_Ntk_t * pNtk, Vec_Ptr_t * vCexes, int fVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pNtkRes = NULL;
    int fNoSweep = 0;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "svh" ) ) != EOF )
    {
        switch ( c )
        {
        case 's':
            fNoSweep ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for AIGs (run \"strash\").\n" );
        return 1;
    }
    if ( pAbc->vCexVec == NULL )
    {
        Abc_Print( -1, "CEX array is not defined. Run \"bmc3 -az\", \"sim3 -az\", or \"pdr -az\".\n" );
        return 1;
    }
    if ( Vec_PtrSize(pAbc->vCexVec) != Abc_NtkPoNum(pNtk) )
    {
        Abc_Print( -1, "CEX array size (%d) does not match the number of outputs (%d).\n", Vec_PtrSize(pAbc->vCexVec), Abc_NtkPoNum(pNtk) );
        return 1;
    }
    Abc_NtkDropSatOutputs( pNtk, pAbc->vCexVec, fVerbose );
    if ( !fNoSweep )
    {
        pNtkRes = Abc_NtkDarLatchSweep( pNtk, 1, 1, 1, 0, -1, -1, 0, 0 );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "Removing SAT outputs has failed.\n" );
            return 1;
        }
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: dropsat [-sh]\n" );
    Abc_Print( -2, "\t         replaces satisfiable POs by constant 0 and cleans up the AIG\n" );
    Abc_Print( -2, "\t-s     : toggles skipping sequential sweep [default = %s]\n", fNoSweep? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAddPi( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // get the new network
    if ( Abc_NtkPiNum(pNtk) == 0 )
    {
        Abc_Ntk_t * pNtkRes = Abc_NtkDup( pNtk );
        Abc_Obj_t * pObj = Abc_NtkCreatePi( pNtkRes );
        Abc_ObjAssignName( pObj, "dummy_pi", NULL );
        Abc_NtkOrderCisCos( pNtkRes );
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: addpi [-h]\n" );
    Abc_Print( -2, "\t         if the network has no PIs, add one dummy PI\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAddFlop( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -2, "The current network is not an AIG (run \"strash\").\n");
        return 0;
    }
    // get the new network
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Ntk_t * pNtkRes = Abc_NtkDup( pNtk );
        Abc_NtkAddLatch( pNtkRes, Abc_AigConst1(pNtkRes), ABC_INIT_ONE );
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: addflop [-h]\n" );
    Abc_Print( -2, "\t         if the network has no flops, add one dummy flop\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAppend( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtk2;
    char * FileName;
    int fComb = 0;
    int c;
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ch" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fComb ^= 1;
            break;
        default:
            goto usage;
        }
    }

    // get the second network
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "The network to append is not given.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "The base network should be strashed for the appending to work.\n" );
        return 1;
    }

    // read the second network
    FileName = argv[globalUtilOptind];
    pNtk2 = Io_Read( FileName, Io_ReadFileType(FileName), 1, 0 );
    if ( pNtk2 == NULL )
        return 1;

    // check if the second network is combinational
    if ( Abc_NtkLatchNum(pNtk2) )
    {
        Abc_NtkDelete( pNtk2 );
        Abc_Print( -1, "The second network has latches. Appending does not work for such networks.\n" );
        return 0;
    }

    // get the new network
    if ( !Abc_NtkAppend( pNtk, pNtk2, 1 ) )
    {
        Abc_NtkDelete( pNtk2 );
        Abc_Print( -1, "Appending the networks failed.\n" );
        return 1;
    }
    Abc_NtkDelete( pNtk2 );
    // sweep dangling logic
    Abc_AigCleanup( (Abc_Aig_t *)pNtk->pManFunc );
    // replace the current network
//    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: append [-h] <file>\n" );
    Abc_Print( -2, "\t         appends a combinational network on top of the current network\n" );
//    Abc_Print( -2, "\t-c     : computes combinational miter (latches as POs) [default = %s]\n", fComb? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file name with the second network\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPutOnTop( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkPutOnTop( Abc_Ntk_t * pNtk, Abc_Ntk_t * pNtk2 );

    Abc_Ntk_t * pNtk, * pNtk2, * pNtkRes = NULL;
    char * FileName;
    int fComb = 0;
    int c;
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ch" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fComb ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( argc > globalUtilOptind + 1 )
    {
        for ( c = 1; c < argc; c++ )
        {
            Abc_Ntk_t * pTemp, * pLogic = Io_Read( argv[c], Io_ReadFileType(argv[c]), 1, 0 );
            if ( pLogic == NULL )
                return 1;
            if ( Abc_NtkIsStrash(pLogic) )
            {
                pLogic = Abc_NtkToLogic( pTemp = pLogic );
                Abc_NtkDelete( pTemp );
            }
            if ( pLogic == NULL )
                return 1;
            if ( pNtkRes == NULL )
                pNtkRes = pLogic;
            else
            {
                pNtkRes = Abc_NtkPutOnTop( pTemp = pNtkRes, pLogic );
                Abc_NtkDelete( pTemp );
                Abc_NtkDelete( pLogic );
                if ( pNtkRes == NULL )
                    return 1;
            }
        }
        assert( Abc_NtkIsLogic(pNtkRes) );
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
        return 0;
    }

    // get the second network
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "The network to append is not given.\n" );
        return 1;
    }

    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "The base network should be in the logic form.\n" );
        return 1;
    }

    // check if the second network is combinational
    if ( Abc_NtkLatchNum(pNtk) )
    {
        Abc_Print( -1, "The current network has latches. This command does not work for such networks.\n" );
        return 0;
    }

    // read the second network
    FileName = argv[globalUtilOptind];
    pNtk2 = Io_Read( FileName, Io_ReadFileType(FileName), 1, 0 );
    if ( pNtk2 == NULL )
        return 1;

    // check if the second network is combinational
    if ( Abc_NtkLatchNum(pNtk2) )
    {
        Abc_NtkDelete( pNtk2 );
        Abc_Print( -1, "The second network has latches. This command does not work for such networks.\n" );
        return 0;
    }
    // compare inputs/outputs
    if ( Abc_NtkPoNum(pNtk) != Abc_NtkPiNum(pNtk2) )
    {
        Abc_NtkDelete( pNtk2 );
        Abc_Print( -1, "The PO count (%d) of the first network is not equal to PI count (%d) of the second network.\n", Abc_NtkPoNum(pNtk), Abc_NtkPiNum(pNtk2) );
        return 0;
    }

    // get the new network
    if ( Abc_NtkIsLogic(pNtk2) )
        pNtkRes = Abc_NtkPutOnTop( pNtk, pNtk2 );
    else if ( Abc_NtkIsStrash(pNtk2) )
    {
        Abc_Ntk_t * pLogic = Abc_NtkToLogic( pNtk2 );
        pNtkRes = Abc_NtkPutOnTop( pNtk, pLogic );
        Abc_NtkDelete( pLogic );
    }
    else assert( 0 );
    Abc_NtkDelete( pNtk2 );
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: putontop [-h] <file>\n" );
    Abc_Print( -2, "\t         connects PIs of network in <file> to POs of current network\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file name with the second network\n");
    Abc_Print( -2, "\t       : (given several files, all networks are stacked on top of each other)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFrames( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkTemp, * pNtkRes;
    int nFrames;
    int fInitial;
    int fVerbose;
    int c;
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    nFrames  = 5;
    fInitial = 0;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames <= 0 )
                goto usage;
            break;
        case 'i':
            fInitial ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // get the new network
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        pNtkTemp = Abc_NtkStrash( pNtk, 0, 0, 0 );
        pNtkRes  = Abc_NtkFrames( pNtkTemp, nFrames, fInitial, fVerbose );
        Abc_NtkDelete( pNtkTemp );
    }
    else
        pNtkRes  = Abc_NtkFrames( pNtk, nFrames, fInitial, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Unrolling the network has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: frames [-F <num>] [-ivh]\n" );
    Abc_Print( -2, "\t           unrolls the network for a number of time frames\n" );
    Abc_Print( -2, "\t-F <num> : the number of frames to unroll [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-i       : toggles initializing the first frame [default = %s]\n", fInitial? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles outputting verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDFrames( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkTemp, * pNtkRes;
    int nPrefix;
    int nFrames;
    int fInitial;
    int fVerbose;
    int c;

    extern Abc_Ntk_t * Abc_NtkDarFrames( Abc_Ntk_t * pNtk, int nPrefix, int nFrames, int fInitial, int fVerbose );
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    nPrefix  = 5;
    nFrames  = 5;
    fInitial = 0;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NFivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nPrefix = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPrefix <= 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames <= 0 )
                goto usage;
            break;
        case 'i':
            fInitial ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( nPrefix > nFrames )
    {
        Abc_Print( -1, "Prefix (%d) cannot be more than the number of frames (%d).\n", nPrefix, nFrames );
        return 1;
    }

    // get the new network
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        pNtkTemp = Abc_NtkStrash( pNtk, 0, 0, 0 );
        pNtkRes  = Abc_NtkDarFrames( pNtkTemp, nPrefix, nFrames, fInitial, fVerbose );
        Abc_NtkDelete( pNtkTemp );
    }
    else
        pNtkRes  = Abc_NtkDarFrames( pNtk, nPrefix, nFrames, fInitial, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Unrolling the network has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: dframes [-NF <num>] [-ivh]\n" );
    Abc_Print( -2, "\t         unrolls the network with simplification\n" );
    Abc_Print( -2, "\t-N num : the number of frames to use as prefix [default = %d]\n", nPrefix );
    Abc_Print( -2, "\t-F num : the number of frames to unroll [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-i     : toggles initializing the first frame [default = %s]\n", fInitial? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles outputting verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}



/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSop( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkFaninSort( Abc_Ntk_t * pNtk );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c, fCubeSort = 1, fMode = -1, nCubeLimit = 1000000;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Csdnh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCubeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCubeLimit < 0 )
                goto usage;
            break;
        case 's':
            fCubeSort ^= 1;
            break;
        case 'd':
            fMode = 1;
            break;
        case 'n':
            fMode = 0;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Converting to SOP is possible only for logic networks.\n" );
        return 1;
    }
    if ( fCubeSort && Abc_NtkHasSop(pNtk) )
    {
        Abc_NtkSortSops(pNtk);
        return 0;
    }
    if ( !fCubeSort && Abc_NtkHasBdd(pNtk) && !Abc_NtkBddToSop(pNtk, -1, ABC_INFINITY, 0) )
    {
        Abc_Print( -1, "Converting to SOP has failed.\n" );
        return 0;
    }
    if ( !Abc_NtkToSop(pNtk, fMode, nCubeLimit) )
    {
        Abc_Print( -1, "Converting to SOP has failed.\n" );
        return 0;
    }
    if ( !fCubeSort )
        Abc_NtkFaninSort( pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: sop [-C num] [-sdnh]\n" );
    Abc_Print( -2, "\t         converts node functions to SOP\n" );
    Abc_Print( -2, "\t-C num : the limit on the number of cubes at a node [default = %d]\n", nCubeLimit );
    Abc_Print( -2, "\t-s     : toggles cube sort when converting from BDDs [default = %s]\n", fCubeSort ? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggles using only positive polarity [default = %s]\n", fMode == 1 ? "yes": "no"  );
    Abc_Print( -2, "\t-n     : toggles using only negative polarity [default = %s]\n", fMode == 0 ? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBdd( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int fReorder = 1, fBdd2Sop = 0;
    int c;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "rsh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'r':
            fReorder ^= 1;
            break;
        case 's':
            fBdd2Sop ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Converting to BDD is possible only for logic networks.\n" );
        return 1;
    }
    if ( fBdd2Sop && Abc_NtkHasSop(pNtk) )
        return !Abc_NtkSopToBdd(pNtk);
    if ( Abc_NtkIsBddLogic(pNtk) )
    {
        Abc_Print( -1, "The logic network is already in the BDD form.\n" );
        return 0;
    }
    if ( !Abc_NtkToBdd(pNtk) )
    {
        Abc_Print( -1, "Converting to BDD has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: bdd [-rsh]\n" );
    Abc_Print( -2, "\t         converts node functions to BDD\n" );
    Abc_Print( -2, "\t-r     : toggles enabling dynamic variable reordering [default = %s]\n", fReorder? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggles constructing BDDs directly from SOPs [default = %s]\n", fBdd2Sop? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Converting to AIG is possible only for logic networks.\n" );
        return 1;
    }
    if ( Abc_NtkIsAigLogic(pNtk) )
    {
        Abc_Print( -1, "The logic network is already in the AIG form.\n" );
        return 0;
    }
    if ( !Abc_NtkToAig(pNtk) )
    {
        Abc_Print( -1, "Converting to AIG has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: aig [-h]\n" );
    Abc_Print( -2, "\t         converts node functions to AIG\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandReorder( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fVerbose;
    extern void Abc_NtkBddReorder( Abc_Ntk_t * pNtk, int fVerbose );

    // set defaults
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // get the new network
    if ( !Abc_NtkIsBddLogic(pNtk) )
    {
        Abc_Print( -1, "Variable reordering is possible when node functions are BDDs (run \"bdd\").\n" );
        return 1;
    }
    Abc_NtkBddReorder( pNtk, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: reorder [-vh]\n" );
    Abc_Print( -2, "\t         reorders local functions of the nodes using sifting\n" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBidec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fVerbose;
    extern void Abc_NtkBidecResyn( Abc_Ntk_t * pNtk, int fVerbose );

    // set defaults
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // get the new network
    if ( !Abc_NtkIsAigLogic(pNtk) )
    {
        Abc_Print( -1, "Bi-decomposition only works when node functions are AIGs (run \"aig\").\n" );
        return 1;
    }
    Abc_NtkBidecResyn( pNtk, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: bidec [-vh]\n" );
    Abc_Print( -2, "\t         applies bi-decomposition to local functions of the nodes\n" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandOrder( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    FILE * pFile;
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    char * pFileName;
    int c;
    int fReverse;
    int fVerbose;
    extern void Abc_NtkImplementCiOrder( Abc_Ntk_t * pNtk, char * pFileName, int fReverse, int fVerbose );
    extern void Abc_NtkFindCiOrder( Abc_Ntk_t * pNtk, int fReverse, int fVerbose );

    // set defaults
    fReverse = 0;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "rvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'r':
            fReverse ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
//    if ( Abc_NtkLatchNum(pNtk) > 0 )
//    {
//        Abc_Print( -1, "Currently this procedure does not work for sequential networks.\n" );
//        return 1;
//    }

    // if the var order file is given, implement this order
    pFileName = NULL;
    if ( argc == globalUtilOptind + 1 )
    {
        pFileName = argv[globalUtilOptind];
        pFile = fopen( pFileName, "r" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Cannot open file \"%s\" with the BDD variable order.\n", pFileName );
            return 1;
        }
        fclose( pFile );
    }
    if ( pFileName )
        Abc_NtkImplementCiOrder( pNtk, pFileName, fReverse, fVerbose );
    else
        Abc_NtkFindCiOrder( pNtk, fReverse, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: order [-rvh] <file>\n" );
    Abc_Print( -2, "\t         computes a good static CI variable order\n" );
    Abc_Print( -2, "\t-r     : toggle reverse ordering [default = %s]\n", fReverse? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : (optional) file with the given variable order\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMuxes( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, fGlobal = 0, fUseAdd = 0, Limit = 1000000;
    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Bgah" ) ) != EOF )
    {
        switch ( c )
        {
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            Limit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Limit < 0 )
                goto usage;
            break;
        case 'g':
            fGlobal ^= 1;
            break;
        case 'a':
            fUseAdd ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( fGlobal )
    {
        if ( !Abc_NtkIsStrash(pNtk) )
        {
            Abc_Print( -1, "The current network should be an AIG.\n" );
            return 1;
        }
    }
    else
    {
        if ( !Abc_NtkIsBddLogic(pNtk) )
        {
            Abc_Print( -1, "Only a BDD logic network can be converted to MUXes.\n" );
            return 1;
        }
    }

    // get the new network
    pNtkRes = Abc_NtkBddToMuxes( pNtk, fGlobal, Limit, fUseAdd );
    if ( pNtkRes == NULL )
    {
        Abc_Print( 0, "Converting to MUXes has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: muxes [-B num] [-gah]\n" );
    Abc_Print( -2, "\t          converts the current network into a network derived by\n" );
    Abc_Print( -2, "\t          replacing all nodes by DAGs isomorphic to the local BDDs\n" );
    Abc_Print( -2, "\t-B <num>: limit on live BDD nodes during collapsing [default = %d]\n", Limit );
    Abc_Print( -2, "\t-g      : toggle visualizing the global BDDs of primary outputs [default = %s].\n", fGlobal? "yes": "no" );
    Abc_Print( -2, "\t-a      : toggle using ADDs instead of BDDs [default = %s].\n", fUseAdd? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCubes( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkSopToCubes( Abc_Ntk_t * pNtk, int fXor );
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, fXor = 0;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "xh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'x':
            fXor ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsSopLogic(pNtk) )
    {
        Abc_Print( -1, "Only a SOP logic network can be transformed into cubes.\n" );
        return 1;
    }

    // get the new network
    pNtkRes = Abc_NtkSopToCubes( pNtk, fXor );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Converting to cubes has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: cubes [-xh]\n" );
    Abc_Print( -2, "\t        converts the current network into a network derived by creating\n" );
    Abc_Print( -2, "\t        a separate node for each product and sum in the local SOPs\n" );
    Abc_Print( -2, "\t-x    : toggle using XOR instead of OR [default = %s]\n", fXor? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandExpand( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkExpandCubes( Abc_Ntk_t * pNtk, Gia_Man_t * pGia, int fVerbose );
    Abc_Ntk_t * pStrash, * pNtk2, * pNtk = Abc_FrameReadNtk(pAbc);
    Gia_Man_t * pGia; int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsSopLogic(pNtk) )
    {
        Abc_Print( -1, "Only a SOP logic network can be transformed into cubes.\n" );
        return 1;
    }
    if ( Abc_NtkLevel(pNtk) > 1 )
    {
        Abc_Print( -1, "The number of logic levels is more than 1 (collapse the network and try again).\n" );
        return 1;
    }
    // read the offset representation
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( 0, "Using the complement of the current network as its offset.\n" );
        pNtk2 = Abc_NtkDup( pNtk );
    }
    else
    {
        char * FileName = argv[globalUtilOptind];
        pNtk2 = Io_Read( FileName, Io_ReadFileType(FileName), 1, 0 );
        if ( pNtk2 == NULL )
        {
            Abc_Print( -1, "Failed to read the current network from file \"%s\".\n", FileName );
            return 1;
        }
    }
    // strash the network
    pStrash = Abc_NtkStrash( pNtk2, 0, 1, 0 );
    Abc_NtkDelete( pNtk2 );
    // convert it into an AIG
    pGia = Abc_NtkClpGia( pStrash );
    //Gia_AigerWrite( pGia, "aig_dump.aig", 0, 0, 0 );
    Abc_NtkDelete( pStrash );
    // get the new network
    Abc_NtkExpandCubes( pNtk, pGia, fVerbose );
    Gia_ManStop( pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: expand [-vh] <file>\n" );
    Abc_Print( -2, "\t        expands cubes against the offset\n" );
    Abc_Print( -2, "\t-v    : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    Abc_Print( -2, "\tfile  : (optional) representation of on-set plus dc-set\n");

    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSplitSop( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkSplitSop( Abc_Ntk_t * pNtk, int nCubesMax, int fVerbose );
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, fVerbose = 0, nCubesMax = 100;
    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nCubesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCubesMax < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsSopLogic(pNtk) )
    {
        Abc_Print( -1, "Only a SOP logic network can be transformed into cubes.\n" );
        return 1;
    }

    // get the new network
    pNtkRes = Abc_NtkSplitSop( pNtk, nCubesMax, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Converting to cubes has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: splitsop [-N num] [-vh]\n" );
    Abc_Print( -2, "\t         splits nodes whose SOP size is larger than the given one\n" );
    Abc_Print( -2, "\t-N num : the maximum number of cubes after splitting [default = %d]\n", nCubesMax );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandExtSeqDcs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fVerbose;
    extern int Abc_NtkExtractSequentialDcs( Abc_Ntk_t * pNet, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( -1, "The current network has no latches.\n" );
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Extracting sequential don't-cares works only for AIGs (run \"strash\").\n" );
        return 0;
    }
    if ( !Abc_NtkExtractSequentialDcs( pNtk, fVerbose ) )
    {
        Abc_Print( -1, "Extracting sequential don't-cares has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: ext_seq_dcs [-vh]\n" );
    Abc_Print( -2, "\t         create EXDC network using unreachable states\n" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandReach( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Saig_ParBbr_t Pars, * pPars = &Pars;
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    char * pLogFileName = NULL;

    extern int Abc_NtkDarReach( Abc_Ntk_t * pNtk, Saig_ParBbr_t * pPars );

    // set defaults
    Bbr_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "TBFLproyvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBddMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBddMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nIterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIterMax < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'p':
            pPars->fPartition ^= 1;
            break;
        case 'r':
            pPars->fReorder ^= 1;
            break;
        case 'o':
            pPars->fReorderImage ^= 1;
            break;
        case 'y':
            pPars->fSkipOutCheck ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( -1, "The current network has no latches.\n" );
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Reachability analysis works only for AIGs (run \"strash\").\n" );
        return 1;
    }
    if ( pAbc->fBatchMode && (pAbc->Status == 0 || pAbc->Status == 1) ) 
    { 
        Abc_Print( 1, "The miters is already solved; skipping the command.\n" ); 
        return 0;
    }
    pAbc->Status  = Abc_NtkDarReach( pNtk, pPars );
    pAbc->nFrames = pPars->iFrame;
    Abc_FrameReplaceCex( pAbc, &pNtk->pSeqModel );
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "reach" );
    return 0;

usage:
    Abc_Print( -2, "usage: reach [-TBF num] [-L file] [-proyvh]\n" );
    Abc_Print( -2, "\t         verifies sequential miter using BDD-based reachability\n" );
    Abc_Print( -2, "\t-T num : approximate time limit in seconds (0=infinite) [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-B num : max number of nodes in the intermediate BDDs [default = %d]\n", pPars->nBddMax );
    Abc_Print( -2, "\t-F num : max number of reachability iterations [default = %d]\n", pPars->nIterMax );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n", pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-p     : enable partitioned image computation [default = %s]\n", pPars->fPartition? "yes": "no" );
    Abc_Print( -2, "\t-r     : enable dynamic BDD variable reordering [default = %s]\n", pPars->fReorder? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggles BDD variable reordering during image computation [default = %s]\n", pPars->fReorderImage? "yes": "no" );
    Abc_Print( -2, "\t-y     : skip checking property outputs [default = %s]\n", pPars->fSkipOutCheck? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

Vec_Int_t * Vec_IntReadList( char * pStr, char Separ )
{
    Vec_Int_t * vRes = Vec_IntAlloc( 10 );
    Vec_IntPush( vRes, atoi(pStr) );
    for ( int c = 0; c < strlen(pStr); c++ )
        if ( pStr[c] == Separ )
            Vec_IntPush( vRes, atoi(pStr+c+1) );
    return vRes;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCone( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    Abc_Obj_t * pNode, * pNodeCo;
    Vec_Int_t * vPoIds = NULL;
    int c;
    int fUseAllCis;
    int fUseMffc;
    int Output;
    int nRange;

    extern Abc_Ntk_t * Abc_NtkSelectPos( Abc_Ntk_t * pNtkInit, Vec_Int_t * vPoIds );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fUseAllCis = 0;
    fUseMffc = 0;
    Output = -1;
    nRange = -1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ORNmah" ) ) != EOF )
    {
        switch ( c )
        {
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            Output = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Output < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRange = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRange < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            vPoIds = Vec_IntReadList( argv[globalUtilOptind], ',' );
            globalUtilOptind++;
            if ( vPoIds == NULL )
                goto usage;
            break;
        case 'm':
            fUseMffc ^= 1;
            break;
        case 'a':
            fUseAllCis ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsLogic(pNtk) && !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently can only be applied to the logic network or an AIG.\n" );
        return 1;
    }

    if ( argc > globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }

    pNodeCo = NULL;
    if ( argc == globalUtilOptind + 1 )
    {
        pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] );
        if ( pNode == NULL )
        {
            Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] );
            return 1;
        }
        if ( fUseMffc )
            pNtkRes = Abc_NtkCreateMffc( pNtk, pNode, argv[globalUtilOptind] );
        else
            pNtkRes = Abc_NtkCreateCone( pNtk, pNode, argv[globalUtilOptind], fUseAllCis );
    }
    else if ( vPoIds )
    {
        pNtkRes = Abc_NtkSelectPos( pNtk, vPoIds );
        Vec_IntFree( vPoIds );
    }
    else if ( nRange > 0 )
    {
        if ( Output == -1 )
        {
            Abc_Print( -1, "The starting PO ID is not specified.\n" );
            return 1;
        }        
        if ( Output >= Abc_NtkPoNum(pNtk) )
        {
            Abc_Print( -1, "The 0-based output number (%d) is larger than the number of primary outputs (%d).\n", Output, Abc_NtkPoNum(pNtk) );
            return 1;
        }        assert( vPoIds == NULL );
        vPoIds = Vec_IntAlloc( nRange );
        for ( c = Output; c < Output + nRange; c++ )
            Vec_IntPush( vPoIds, c );
        pNtkRes = Abc_NtkSelectPos( pNtk, vPoIds );
        Vec_IntFree( vPoIds );
    }
    else if ( Output >= 0 )
    {
        if ( Output >= Abc_NtkPoNum(pNtk) )
        {
            Abc_Print( -1, "The 0-based output number (%d) is larger than the number of primary outputs (%d).\n", Output, Abc_NtkPoNum(pNtk) );
            return 1;
        }        assert( vPoIds == NULL );
        vPoIds = Vec_IntAlloc( 1 );
        Vec_IntPush( vPoIds, Output );
        pNtkRes = Abc_NtkSelectPos( pNtk, vPoIds );
        Vec_IntFree( vPoIds );
    }
    else
    {
        if ( Output == -1 )
        {
            Abc_Print( -1, "The starting PO ID is not specified.\n" );
            return 1;
        }
        if ( Output >= Abc_NtkCoNum(pNtk) )
        {
            Abc_Print( -1, "The 0-based output number (%d) is larger than the number of combinational outputs (%d).\n", Output, Abc_NtkCoNum(pNtk) );
            return 1;
        }
        pNodeCo = Abc_NtkCo( pNtk, Output );
        if ( fUseMffc )
            pNtkRes = Abc_NtkCreateMffc( pNtk, Abc_ObjFanin0(pNodeCo), Abc_ObjName(pNodeCo) );
        else
            pNtkRes = Abc_NtkCreateCone( pNtk, Abc_ObjFanin0(pNodeCo), Abc_ObjName(pNodeCo), fUseAllCis );
    }
    if ( pNodeCo && Abc_ObjFaninC0(pNodeCo) )
    {
        Abc_NtkPo(pNtkRes, 0)->fCompl0  ^= 1;
//        Abc_Print( -1, "The extracted cone represents the complement function of the CO.\n" );
    }
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Writing the logic cone of one node has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: cone [-ORN num] [-amh] <name>\n" );
    Abc_Print( -2, "\t         replaces the current network by one or more logic cones\n" );
    Abc_Print( -2, "\t-a     : toggle keeping all CIs or structral support only [default = %s]\n", fUseAllCis? "all": "structural" );
    Abc_Print( -2, "\t-m     : toggle keeping only MFFC or complete TFI cone [default = %s]\n", fUseMffc? "MFFC": "TFI cone" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t-O num : (optional) the 0-based number of the CO to extract\n");
    Abc_Print( -2, "\t-R num : (optional) the number of outputs to extract\n");
    Abc_Print( -2, "\t-N <list> : (optional) a comma-separated list of zero-based primary output indexes\n");
    Abc_Print( -2, "\tname   : (optional) the name of the node to extract\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandNode( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    Abc_Obj_t * pNode;
    int c;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
       case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Currently can only be applied to a logic network.\n" );
        return 1;
    }

    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }

    pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] );
    if ( pNode == NULL )
    {
        Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] );
        return 1;
    }

    pNtkRes = Abc_NtkCreateFromNode( pNtk, pNode );
//    pNtkRes = Abc_NtkDeriveFromBdd( pNtk->pManFunc, pNode->pData, NULL, NULL );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Splitting one node has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: node [-h] <name>\n" );
    Abc_Print( -2, "\t         replaces the current network by the network composed of one node\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tname   : the node name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRange( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    pNtk = Abc_FrameReadNtk(pAbc);
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
       case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently can only be applied to an AIG.\n" );
        return 1;
    }
    pNtkRes = Abc_NtkCreateFromRange( pNtk );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Deriving the network has failed.\n" );
        return 1;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: range [-h]\n" );
    Abc_Print( -2, "\t         computes the range of output values as one node\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCof( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk;
    Abc_Obj_t * pNode;
    int c, Const;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
       case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Currently can only be applied to a logic network.\n" );
        return 1;
    }

    if ( argc != globalUtilOptind + 2 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }
    pNode = Abc_NtkFindCi( pNtk, argv[globalUtilOptind] );
    if ( pNode == NULL )
        pNode = Abc_NtkFindNode( pNtk, argv[globalUtilOptind] );
    if ( pNode == NULL )
    {
        Abc_Print( -1, "Cannot find node \"%s\".\n", argv[globalUtilOptind] );
        return 1;
    }
    Const = atoi( argv[globalUtilOptind+1] );
    if ( Const != 0 && Const != 1 )
    {
        Abc_Print( -1, "Constant should be 0 or 1.\n", argv[globalUtilOptind+1] );
        return 1;
    }
    Abc_ObjReplaceByConstant( pNode, Const );
    return 0;

usage:
    Abc_Print( -2, "usage: cof [-h] <node> <const>\n" );
    Abc_Print( -2, "\t          replaces one node in a logic network by constant 0 or 1\n" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t<node>  : the node to replace\n");
    Abc_Print( -2, "\t<const> : the constant to replace the node with\n");
    Abc_Print( -2, "\tname    : the node name\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTopmost( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, nLevels;
    extern Abc_Ntk_t * Abc_NtkTopmost( Abc_Ntk_t * pNtk, int nLevels );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nLevels = 10;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevels = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevels < 0 )
                goto usage;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }

    if ( Abc_NtkLatchNum(pNtk) > 0 )
    {
        Abc_Print( -1, "Currently only works for combinational circuits.\n" );
        return 0;
    }

    pNtkRes = Abc_NtkTopmost( pNtk, nLevels );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "The command has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: topmost [-N num] [-h]\n" );
    Abc_Print( -2, "\t         replaces the current network by several of its topmost levels\n" );
    Abc_Print( -2, "\t-N num : max number of levels [default = %d]\n", nLevels );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tname   : the node name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBottommost( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, nLevels;
    extern Abc_Ntk_t * Abc_NtkBottommost( Abc_Ntk_t * pNtk, int nLevels );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nLevels = 10;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevels = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevels < 0 )
                goto usage;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }

    if ( Abc_NtkLatchNum(pNtk) > 0 )
    {
        Abc_Print( -1, "Currently only works for combinational circuits.\n" );
        return 0;
    }

    pNtkRes = Abc_NtkBottommost( pNtk, nLevels );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "The command has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: bottommost [-N num] [-h]\n" );
    Abc_Print( -2, "\t         replaces the current network by several of its bottommost levels\n" );
    Abc_Print( -2, "\t-N num : max number of levels [default = %d]\n", nLevels );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tname   : the node name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTopAnd( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    extern Abc_Ntk_t * Abc_NtkTopAnd( Abc_Ntk_t * pNtk );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }

    if ( Abc_NtkLatchNum(pNtk) > 0 )
    {
        Abc_Print( -1, "Currently can only works for combinational circuits.\n" );
        return 0;
    }
    if ( Abc_NtkPoNum(pNtk) != 1 )
    {
        Abc_Print( -1, "Currently expects a single-output miter.\n" );
        return 0;
    }
    if ( Abc_ObjFaninC0(Abc_NtkPo(pNtk, 0)) )
    {
        Abc_Print( -1, "The PO driver is complemented. AND-decomposition is impossible.\n" );
        return 0;
    }
    if ( !Abc_ObjIsNode(Abc_ObjChild0(Abc_NtkPo(pNtk, 0))) )
    {
        Abc_Print( -1, "The PO driver is not a node. AND-decomposition is impossible.\n" );
        return 0;
    }
    pNtkRes = Abc_NtkTopAnd( pNtk );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "The command has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: topand [-h]\n" );
    Abc_Print( -2, "\t         performs AND-decomposition of single-output combinational miter\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tname   : the node name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTrim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    Gia_Man_t * pGia, * pNew;
    Aig_Man_t * pAig;
    int c;
    pNtk = Abc_FrameReadNtk(pAbc);
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Trimming works only for AIGs (run \"strash\").\n" );
        return 1;
    }
    // convert to GIA
    pAig = Abc_NtkToDar( pNtk, 0, 1 );
    pGia = Gia_ManFromAigSimple( pAig );
    Aig_ManStop( pAig );
    // perform trimming
    pNew = Gia_ManDupTrimmed( pGia, 1, 1, 0, -1 );
    Gia_ManStop( pGia );
    // convert back
    pAig = Gia_ManToAigSimple( pNew );
    Gia_ManStop( pNew );
    pNtkRes = Abc_NtkFromAigPhase( pAig );
    Aig_ManStop( pAig );
    // duplicate the name and the spec
    ABC_FREE( pNtkRes->pName );
    ABC_FREE( pNtkRes->pSpec );
    pNtkRes->pName = Extra_UtilStrsav(pNtk->pName);
    pNtkRes->pSpec = Extra_UtilStrsav(pNtk->pSpec);
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: trim [-h]\n" );
    Abc_Print( -2, "\t         removes POs fed by constants and PIs w/o fanout\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandShortNames( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c, fKeepIo = 0, fAlpha = 0;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "akh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fAlpha ^= 1;
            break;
        case 'k':
            fKeepIo ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( fAlpha )
        Abc_NtkCharNames( pNtk );
    else if ( fKeepIo )
        Abc_NtkCleanNames( pNtk );
    else
        Abc_NtkShortNames( pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: short_names [-akh]\n" );
    Abc_Print( -2, "\t         replaces PI/PO/latch names by short char strings\n" );
    Abc_Print( -2, "\t-a     : toggle using simple character names for PIs/POs [default = %s]\n", fAlpha? "yes": "no" );
    Abc_Print( -2, "\t-k     : toggle keeping PI/PO names unchanged [default = %s]\n", fKeepIo? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMoveNames( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkMoveNames( Abc_Ntk_t * pNtk, Abc_Ntk_t * pOld );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Ntk_t * pNtk2;
    char * FileName;
    int c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    // get the second network
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "The network to take names from is not given.\n" );
        return 1;
    }

    // read the second network
    FileName = argv[globalUtilOptind];
    pNtk2 = Io_Read( FileName, Io_ReadFileType(FileName), 1, 0 );
    if ( pNtk2 == NULL )
        return 1;

    // compare inputs/outputs
    if ( Abc_NtkPiNum(pNtk) != Abc_NtkPiNum(pNtk2) )
    {
        Abc_NtkDelete( pNtk2 );
        Abc_Print( -1, "The PI count (%d) of the first network is not equal to PI count (%d) of the second network.\n", Abc_NtkPiNum(pNtk), Abc_NtkPiNum(pNtk2) );
        return 0;
    }
    // compare inputs/outputs
    if ( Abc_NtkPoNum(pNtk) != Abc_NtkPoNum(pNtk2) )
    {
        Abc_NtkDelete( pNtk2 );
        Abc_Print( -1, "The PO count (%d) of the first network is not equal to PO count (%d) of the second network.\n", Abc_NtkPoNum(pNtk), Abc_NtkPoNum(pNtk2) );
        return 0;
    }
    // compare inputs/outputs
    if ( Abc_NtkLatchNum(pNtk) != Abc_NtkLatchNum(pNtk2) )
    {
        Abc_NtkDelete( pNtk2 );
        Abc_Print( -1, "The flop count (%d) of the first network is not equal to flop count (%d) of the second network.\n", Abc_NtkLatchNum(pNtk), Abc_NtkLatchNum(pNtk2) );
        return 0;
    }
    Abc_NtkMoveNames( pNtk, pNtk2 );
    Abc_NtkDelete( pNtk2 );
    return 0;

usage:
    Abc_Print( -2, "usage: move_names [-h] <file>\n" );
    Abc_Print( -2, "\t         moves PI/PO/latch names from the other network\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file with network that has required names\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandExdcFree( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( pNtk->pExdc == NULL )
    {
        Abc_Print( -1, "The network has no EXDC.\n" );
        return 1;
    }

    Abc_NtkDelete( pNtk->pExdc );
    pNtk->pExdc = NULL;

    // replace the current network
    pNtkRes = Abc_NtkDup( pNtk );
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: exdc_free [-h]\n" );
    Abc_Print( -2, "\t         frees the EXDC network of the current network\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandExdcGet( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( pNtk->pExdc == NULL )
    {
        Abc_Print( -1, "The network has no EXDC.\n" );
        return 1;
    }

    // replace the current network
    pNtkRes = Abc_NtkDup( pNtk->pExdc );
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: exdc_get [-h]\n" );
    Abc_Print( -2, "\t         replaces the current network by the EXDC of the current network\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandExdcSet( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    FILE * pFile;
    Abc_Ntk_t * pNtk, * pNtkNew, * pNtkRes;
    char * FileName;
    int c;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( argc != globalUtilOptind + 1 )
    {
        goto usage;
    }

    // get the input file name
    FileName = argv[globalUtilOptind];
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".mv", ".blif", ".pla", ".eqn", ".bench" )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );

    // set the new network
    pNtkNew = Io_Read( FileName, Io_ReadFileType(FileName), 1, 0 );
    if ( pNtkNew == NULL )
    {
        Abc_Print( -1, "Reading network from file has failed.\n" );
        return 1;
    }

    // replace the EXDC
    if ( pNtk->pExdc )
    {
        Abc_NtkDelete( pNtk->pExdc );
        pNtk->pExdc = NULL;
    }
    pNtkRes = Abc_NtkDup( pNtk );
    pNtkRes->pExdc = pNtkNew;

    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: exdc_set [-h] <file>\n" );
    Abc_Print( -2, "\t         sets the network from file as EXDC for the current network\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file with the new EXDC network\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCareSet( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    FILE * pFile;
    Abc_Ntk_t * pNtk, * pNtkNew, * pNtkRes;
    char * FileName;
    int c;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( argc != globalUtilOptind + 1 )
    {
        goto usage;
    }

    // get the input file name
    FileName = argv[globalUtilOptind];
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".mv", ".blif", ".pla", ".eqn", ".bench" )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );

    // set the new network
    pNtkNew = Io_Read( FileName, Io_ReadFileType(FileName), 1, 0 );
    if ( pNtkNew == NULL )
    {
        Abc_Print( -1, "Reading network from file has failed.\n" );
        return 1;
    }

    // replace the EXDC
    if ( pNtk->pExcare )
    {
        Abc_NtkDelete( (Abc_Ntk_t *)pNtk->pExcare );
        pNtk->pExcare = NULL;
    }
    pNtkRes = Abc_NtkDup( pNtk );
    pNtkRes->pExcare = pNtkNew;

    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: care_set [-h] <file>\n" );
    Abc_Print( -2, "\t         sets the network from file as a care for the current network\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file with the new care network\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Cut_Params_t Params, * pParams = &Params;
    Cut_Man_t * pCutMan;
    Cut_Oracle_t * pCutOracle = NULL;
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fOracle;
    extern Cut_Man_t * Abc_NtkCuts( Abc_Ntk_t * pNtk, Cut_Params_t * pParams );
    extern void Abc_NtkCutsOracle( Abc_Ntk_t * pNtk, Cut_Oracle_t * pCutOracle );

    // set defaults
    fOracle = 0;
    memset( pParams, 0, sizeof(Cut_Params_t) );
    pParams->nVarsMax    = 5;     // the max cut size ("k" of the k-feasible cuts)
    pParams->nKeepMax    = 1000;  // the max number of cuts kept at a node
    pParams->fTruth      = 1;     // compute truth tables
    pParams->fFilter     = 1;     // filter dominated cuts
    pParams->fDrop       = 0;     // drop cuts on the fly
    pParams->fDag        = 1;     // compute DAG cuts
    pParams->fTree       = 0;     // compute tree cuts
    pParams->fGlobal     = 0;     // compute global cuts
    pParams->fLocal      = 0;     // compute local cuts
    pParams->fFancy      = 0;     // compute something fancy
    pParams->fRecordAig  = 1;     // compute something fancy
    pParams->fMap        = 0;     // compute mapping delay
    pParams->fAdjust     = 0;     // removes useless fanouts
    pParams->fNpnSave    = 0;     // enables dumping truth tables
    pParams->fVerbose    = 0;     // the verbosiness flag
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KMtfdxyglzamjvosh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nVarsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nVarsMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nKeepMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nKeepMax < 0 )
                goto usage;
            break;
        case 't':
            pParams->fTruth ^= 1;
            break;
        case 'f':
            pParams->fFilter ^= 1;
            break;
        case 'd':
            pParams->fDrop ^= 1;
            break;
        case 'x':
            pParams->fDag ^= 1;
            break;
        case 'y':
            pParams->fTree ^= 1;
            break;
        case 'g':
            pParams->fGlobal ^= 1;
            break;
        case 'l':
            pParams->fLocal ^= 1;
            break;
        case 'z':
            pParams->fFancy ^= 1;
            break;
        case 'a':
            pParams->fRecordAig ^= 1;
            break;
        case 'm':
            pParams->fMap ^= 1;
            break;
        case 'j':
            pParams->fAdjust ^= 1;
            break;
        case 'v':
            pParams->fVerbose ^= 1;
            break;
        case 'o':
            fOracle ^= 1;
            break;
        case 's':
            pParams->fNpnSave ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Cut computation is available only for AIGs (run \"strash\").\n" );
        return 1;
    }
    if ( pParams->nVarsMax < CUT_SIZE_MIN || pParams->nVarsMax > CUT_SIZE_MAX )
    {
        Abc_Print( -1, "Can only compute the cuts for %d <= K <= %d.\n", CUT_SIZE_MIN, CUT_SIZE_MAX );
        return 1;
    }
    if ( pParams->fDag && pParams->fTree )
    {
        Abc_Print( -1, "Cannot compute both DAG cuts and tree cuts at the same time.\n" );
        return 1;
    }

    if ( pParams->fNpnSave )
    {
        pParams->nVarsMax = 6;
        pParams->fTruth = 1;
    }

    if ( fOracle )
        pParams->fRecord = 1;
    pCutMan = Abc_NtkCuts( pNtk, pParams );
    if ( fOracle )
        pCutOracle = Cut_OracleStart( pCutMan );
    Cut_ManStop( pCutMan );
    if ( fOracle )
    {
        assert(pCutOracle);
        Abc_NtkCutsOracle( pNtk, pCutOracle );
        Cut_OracleStop( pCutOracle );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: cut [-K num] [-M num] [-tfdcovamjsvh]\n" );
    Abc_Print( -2, "\t         computes k-feasible cuts for the AIG\n" );
    Abc_Print( -2, "\t-K num : max number of leaves (%d <= num <= %d) [default = %d]\n",     CUT_SIZE_MIN, CUT_SIZE_MAX, pParams->nVarsMax );
    Abc_Print( -2, "\t-M num : max number of cuts stored at a node [default = %d]\n",        pParams->nKeepMax );
    Abc_Print( -2, "\t-t     : toggle truth table computation [default = %s]\n",             pParams->fTruth?   "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle filtering of duplicated/dominated [default = %s]\n",   pParams->fFilter?  "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle dropping when fanouts are done [default = %s]\n",      pParams->fDrop?    "yes": "no" );
    Abc_Print( -2, "\t-x     : toggle computing only DAG cuts [default = %s]\n",             pParams->fDag?     "yes": "no" );
    Abc_Print( -2, "\t-y     : toggle computing only tree cuts [default = %s]\n",            pParams->fTree?    "yes": "no" );
    Abc_Print( -2, "\t-g     : toggle computing only global cuts [default = %s]\n",          pParams->fGlobal?  "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle computing only local cuts [default = %s]\n",           pParams->fLocal?   "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle fancy computations [default = %s]\n",                  pParams->fFancy?   "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle recording cut functions [default = %s]\n",             pParams->fRecordAig?"yes": "no" );
    Abc_Print( -2, "\t-m     : toggle delay-oriented FPGA mapping [default = %s]\n",         pParams->fMap?     "yes": "no" );
    Abc_Print( -2, "\t-j     : toggle removing fanouts due to XOR/MUX [default = %s]\n",     pParams->fAdjust?  "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle creating library of 6-var functions [default = %s]\n", pParams->fNpnSave?  "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",        pParams->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandScut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Cut_Params_t Params, * pParams = &Params;
    Cut_Man_t * pCutMan;
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    extern Cut_Man_t * Abc_NtkSeqCuts( Abc_Ntk_t * pNtk, Cut_Params_t * pParams );

    // set defaults
    memset( pParams, 0, sizeof(Cut_Params_t) );
    pParams->nVarsMax  = 5;     // the max cut size ("k" of the k-feasible cuts)
    pParams->nKeepMax  = 1000;  // the max number of cuts kept at a node
    pParams->fTruth    = 0;     // compute truth tables
    pParams->fFilter   = 1;     // filter dominated cuts
    pParams->fSeq      = 1;     // compute sequential cuts
    pParams->fVerbose  = 0;     // the verbosiness flag
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KMtvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nVarsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nVarsMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nKeepMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nKeepMax < 0 )
                goto usage;
            break;
        case 't':
            pParams->fTruth ^= 1;
            break;
        case 'v':
            pParams->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
/*
    if ( !Abc_NtkIsSeq(pNtk) )
    {
        Abc_Print( -1, "Sequential cuts can be computed for sequential AIGs (run \"seq\").\n" );
        return 1;
    }
*/
    if ( pParams->nVarsMax < CUT_SIZE_MIN || pParams->nVarsMax > CUT_SIZE_MAX )
    {
        Abc_Print( -1, "Can only compute the cuts for %d <= K <= %d.\n", CUT_SIZE_MIN, CUT_SIZE_MAX );
        return 1;
    }

    pCutMan = Abc_NtkSeqCuts( pNtk, pParams );
    Cut_ManStop( pCutMan );
    return 0;

usage:
    Abc_Print( -2, "usage: scut [-K num] [-M num] [-tvh]\n" );
    Abc_Print( -2, "\t         computes k-feasible cuts for the sequential AIG\n" );
    Abc_Print( -2, "\t-K num : max number of leaves (%d <= num <= %d) [default = %d]\n",   CUT_SIZE_MIN, CUT_SIZE_MAX, pParams->nVarsMax );
    Abc_Print( -2, "\t-M num : max number of cuts stored at a node [default = %d]\n",      pParams->nKeepMax );
    Abc_Print( -2, "\t-t     : toggle truth table computation [default = %s]\n",           pParams->fTruth?   "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",      pParams->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandEspresso( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fVerbose;
    extern void Abc_NtkEspresso( Abc_Ntk_t * pNtk, int fVerbose );

    if ( argc == 2 && !strcmp(argv[1], "-h") )
    {
        Abc_Print( -2, "The espresso command is currently disabled.\n" );
        return 1;
    }

    Abc_Print( -1, "This command is currently disabled.\n" );
    return 0;

    // set defaults
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "SOP minimization is possible for logic networks (run \"renode\").\n" );
        return 1;
    }
//    Abc_NtkEspresso( pNtk, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: espresso [-vh]\n" );
    Abc_Print( -2, "\t         minimizes SOPs of the local functions using Espresso\n" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandGen( Abc_Frame_t * pAbc, int argc, char ** argv )
{
//    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int nVars;    // the number of variables
    int nArgs;    // the number of arguments
    int nLutSize = -1; // the size of LUTs
    int nLuts = -1;    // the number of LUTs
    int fAdder;
    int fAdderTree;
    int fSorter;
    int fMesh;
    int fMulti;
    int fBooth;
    int fFpga;
    int fOneHot;
    int fRandom;
    int fGraph;
    int fVerbose;
    char * FileName;
    char Command[1000];
    extern void Abc_GenAdder( char * pFileName, int nVars );
    extern void Abc_GenSorter( char * pFileName, int nVars );
    extern void Abc_GenMesh( char * pFileName, int nVars );
    extern void Abc_GenMulti( char * pFileName, int nVars );
    extern void Abc_GenBooth( char * pFileName, int nVars );
    extern void Abc_GenFpga( char * pFileName, int nLutSize, int nLuts, int nVars );
    extern void Abc_GenOneHot( char * pFileName, int nVars );
    extern void Abc_GenRandom( char * pFileName, int nPis );
    extern void Abc_GenGraph( char * pFileName, int nPis );
    extern void Abc_GenAdderTree( char * pFileName, int nArgs, int nBits );

    // set defaults
    nVars = 8;
    nArgs = 8;
    fAdder = 0;
    fAdderTree = 0;
    fSorter = 0;
    fMesh = 0;
    fMulti = 0;
    fBooth = 0;
    fFpga = 0;
    fOneHot = 0;
    fRandom = 0;
    fGraph = 0;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NAKLatsembfnrgvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            nArgs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nArgs < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLuts < 0 )
                goto usage;
            break;
        case 'a':
            fAdder ^= 1;
            break;
        case 't':
            fAdderTree ^= 1;
            break;
        case 's':
            fSorter ^= 1;
            break;
        case 'e':
            fMesh ^= 1;
            break;
        case 'm':
            fMulti ^= 1;
            break;
        case 'b':
            fBooth ^= 1;
            break;
        case 'f':
            fFpga ^= 1;
            break;
        case 'n':
            fOneHot ^= 1;
            break;
        case 'r':
            fRandom ^= 1;
            break;
        case 'g':
            fGraph ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( argc != globalUtilOptind + 1 )
    {
        goto usage;
    }
    if ( nVars < 1 )
    {
        Abc_Print( -1, "The number of variables should be a positive integer.\n" );
        return 0;
    }
    // get the input file name
    FileName = argv[globalUtilOptind];
    if ( fAdder )
        Abc_GenAdder( FileName, nVars );
    else if ( fSorter )
        Abc_GenSorter( FileName, nVars );
    else if ( fMesh )
        Abc_GenMesh( FileName, nVars );
    else if ( fMulti )
        Abc_GenMulti( FileName, nVars );
    else if ( fBooth )
        Abc_GenBooth( FileName, nVars );
    else if ( fFpga )
        Abc_GenFpga( FileName, nLutSize, nLuts, nVars );
//        Abc_GenFpga( FileName, 2, 2, 3 );
//        Abc_GenFpga( FileName, 3, 2, 5 );
    else if ( fOneHot )
        Abc_GenOneHot( FileName, nVars );
    else if ( fRandom )
        Abc_GenRandom( FileName, nVars );
    else if ( fGraph )
        Abc_GenGraph( FileName, nVars );
    else if ( fAdderTree )
    {
        printf( "Generating adder tree with %d arguments and %d bits.\n", nArgs, nVars );
        Abc_GenAdderTree( FileName, nArgs, nVars );
        sprintf( Command, "%%read %s; %%blast; &put", FileName );
        Cmd_CommandExecute( pAbc, Command );
        return 0;
    }
    else
    {
        Abc_Print( -1, "Type of circuit is not specified.\n" );
        return 0;
    }
    // read the file just produced
    sprintf(Command, "read %s", FileName );
    Cmd_CommandExecute( pAbc, Command );
    return 0;

usage:
    Abc_Print( -2, "usage: gen [-NAKL num] [-atsembfnrgvh] <file>\n" );
    Abc_Print( -2, "\t         generates simple circuits\n" );
    Abc_Print( -2, "\t-N num : the number of variables [default = %d]\n", nVars );
    Abc_Print( -2, "\t-A num : the number of arguments (for adder tree) [default = %d]\n", nArgs );
    Abc_Print( -2, "\t-K num : the LUT size (to be used with switch -f) [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-L num : the LUT count (to be used with switch -f) [default = %d]\n", nLuts );
    Abc_Print( -2, "\t-a     : generate ripple-carry adder [default = %s]\n", fAdder? "yes": "no" );
    Abc_Print( -2, "\t-t     : generate an adder tree [default = %s]\n", fAdderTree? "yes": "no" );
    Abc_Print( -2, "\t-s     : generate a sorter [default = %s]\n", fSorter? "yes": "no" );
    Abc_Print( -2, "\t-e     : generate a mesh [default = %s]\n", fMesh? "yes": "no" );
    Abc_Print( -2, "\t-m     : generate a multiplier [default = %s]\n", fMulti? "yes": "no" );
    Abc_Print( -2, "\t-b     : generate a signed Booth multiplier [default = %s]\n", fBooth? "yes": "no" );
    Abc_Print( -2, "\t-f     : generate a LUT FPGA structure [default = %s]\n", fFpga? "yes": "no" );
    Abc_Print( -2, "\t-g     : generate a graph structure [default = %s]\n", fGraph? "yes": "no" );
    Abc_Print( -2, "\t-n     : generate one-hotness conditions [default = %s]\n", fOneHot? "yes": "no" );
    Abc_Print( -2, "\t-r     : generate random single-output function [default = %s]\n", fRandom? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : output file name\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandGenTF( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_GenThresh( char * pFileName, int nBits, Vec_Int_t * vNums, int nLutSize, char * pArch );
    int c, nBits = 0, nLutSize = -1, fVerbose = 0, nSum = 0;
    char Command[1000], * pFileName = "out.blif", * pArch = NULL;
    Vec_Int_t * vNums = NULL;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WKAvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nBits = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBits < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a file name.\n" );
                goto usage;
            }
            pArch = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind )
        goto usage;
    if ( nBits == 0 )
    {
        Abc_Print( -1, "Bit-width should be specified.\n" );
        return 0;        
    }
    if ( nLutSize != -1 && nLutSize != 4 && nLutSize != 6 )
    {
        Abc_Print( -1, "LUT size %d is not supported.\n", nLutSize );
        return 0;
    }
    if ( pArch )
    {
        int Counts[2] = {0};
        for ( c = 0; c < strlen(pArch); c++ )
            if ( pArch[c] == '(' )
                Counts[0]++;
            else if ( pArch[c] == ')' )
                Counts[1]++;
            else if ( pArch[c] >= '1' && pArch[c] <= '9' )
                nSum += pArch[c] - '0';
            else if ( pArch[c] >= 'A' && pArch[c] <= 'Z' )
                nSum += pArch[c] - 'A' + 10;
            else {
                Abc_Print( -1, "Architecture description contains a wrong symbol (%c).\n", pArch[c] );
                return 0;            
            }
        if ( Counts[0] != Counts[1] )
        {
            Abc_Print( -1, "Mismatching number of opening and closing parentheses (%d and %d).\n", Counts[0], Counts[1] );
            return 0; 
        }
    }
    vNums = Vec_IntAlloc( argc );
    for ( c = globalUtilOptind; c < argc; c++ )
        Vec_IntPush( vNums, atoi(argv[c]) );
    if ( Vec_IntSize(vNums) < 3 ) {
        Abc_Print( -1, "Expecting that at least two weights and a threshold are specified on the command line.\n" );
        Vec_IntFree( vNums );
        return 0; 
    }
    if ( pArch && nSum != Vec_IntSize(vNums)-1 ) {
        Abc_Print( -1, "The architecture assumes %d sum inputs while there are %d weights.\n", nSum, Vec_IntSize(vNums)-1 );
        Vec_IntFree( vNums );
        return 0; 
    }
    printf( "Generating threshold function with %d inputs and bit-width %d.\n", Vec_IntSize(vNums)-1, nBits );
    Abc_GenThresh( pFileName, nBits, vNums, nLutSize, pArch );    
    if ( nLutSize == 4 || nLutSize == 6 )
        sprintf(Command, "read %s; strash; if -K %d -am; mfs2 -W 10 -L 10 -M 1000", pFileName, nLutSize );
    else
        sprintf(Command, "read %s", pFileName );
    Cmd_CommandExecute( pAbc, Command );
    Vec_IntFree( vNums );
    return 0;

usage:
    Abc_Print( -2, "usage: gentf [-WK num] [-A str] [-vh] <w1> <w2> ... <wn> <thresh>\n" );
    Abc_Print( -2, "\t         generates threshold function\n" );
    Abc_Print( -2, "\t-W num : the bit-width [default = none]\n" );
    Abc_Print( -2, "\t-K num : the LUT size [default = none]\n" );
    Abc_Print( -2, "\t-A str : the circuit architecture [default = none]\n");
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<nums> : weights and threshold\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandGenAT( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_GenAT( char * pFileName, Vec_Int_t * vNums );
    extern void Abc_GenATDual( char * pFileName, Vec_Int_t * vNums );
    int c, fDual = 0, fVerbose = 0;
    char Command[1000], * pFileName = "out.blif";
    Vec_Int_t * vNums = NULL;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "dvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'd':
            fDual ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind )
        goto usage;
    vNums = Vec_IntAlloc( argc );
    for ( c = globalUtilOptind; c < argc; c++ )
        Vec_IntPush( vNums, atoi(argv[c]) );
    if ( fDual )
        Abc_GenATDual( pFileName, vNums );
    else
        Abc_GenAT( pFileName, vNums );
    sprintf(Command, "read %s", pFileName );
    Cmd_CommandExecute( pAbc, Command );
    Vec_IntFree( vNums );
    return 0;

usage:
    Abc_Print( -2, "usage: genat [-dvh] <n1> <n2> ... <nn>\n" );
    Abc_Print( -2, "\t         generates the adder tree\n" );
    Abc_Print( -2, "\t-d     : toggle building dual tree [default = %s]\n", fDual? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<nums> : input counts by rank\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandGenPop( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkLutCascadeFromPopcountLuts( int nVars, int nLutSize, int fVerbose, char * pFileName );
    char * pFileName = NULL;
    Abc_Ntk_t * pNtk = NULL;
    int c, nVars = 10, nLutSize = 6, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NKvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
        pFileName = argv[globalUtilOptind];
    pNtk = Abc_NtkLutCascadeFromPopcountLuts( nVars, nLutSize, fVerbose, pFileName );
    if ( pNtk == NULL )
    {
        fprintf( pAbc->Err, "Deriving the network has failed.\n" );
        return 1;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: genpop [-NK num] [-vh] <file.v>\n" );
    Abc_Print( -2, "\t            generates the adder tree\n" );
    Abc_Print( -2, "\t-N <num>  : the number of support variables [default = %d]\n", nVars );
    Abc_Print( -2, "\t-K <num>  : the number of LUT inputs [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-v        : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h        : print the command usage\n");
    Abc_Print( -2, "\t-<file.v> : (optional) Verilog file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandGenFsm( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_GenFsm( char * pFileName, int nIns, int nOuts, int nStates, int nLines, int ProbI, int ProbO );
    int c, nIns, nOuts, nStates, nLines, ProbI, ProbO, fVerbose;
    char * FileName;
    // set defaults
    nIns     =   30;
    nOuts    =    1;
    nStates  =   20;
    nLines   =  100;
    ProbI    =   10;
    ProbO    =  100;
    fVerbose =    0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IOSLPQvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIns = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIns < 0 )
                goto usage;
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            nOuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nOuts < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nStates = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nStates < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLines = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLines < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            ProbI = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( ProbI < 0 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by an integer.\n" );
                goto usage;
            }
            ProbO = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( ProbO < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( argc != globalUtilOptind + 1 )
    {
        goto usage;
    }
    if ( nIns < 1 || nStates < 1 || nLines < 1 || ProbI < 1 || ProbO < 1 )
    {
        Abc_Print( -1, "The number of inputs. states, lines, and probablity should be positive integers.\n" );
        goto usage;
    }
    // get the input file name
    FileName = argv[globalUtilOptind];
    Abc_GenFsm( FileName, nIns, nOuts, nStates, nLines, ProbI, ProbO );
    return 0;

usage:
    Abc_Print( -2, "usage: genfsm [-IOSLPQ num] [-vh] <file>\n" );
    Abc_Print( -2, "\t         generates random FSM in KISS format\n" );
    Abc_Print( -2, "\t-I num : the number of input variables [default = %d]\n", nIns );
    Abc_Print( -2, "\t-O num : the number of output variables [default = %d]\n", nOuts );
    Abc_Print( -2, "\t-S num : the number of state variables [default = %d]\n", nStates );
    Abc_Print( -2, "\t-L num : the number of lines (product terms) [default = %d]\n", nLines );
    Abc_Print( -2, "\t-P num : percentage propability of a variable present in the input cube [default = %d]\n", ProbI );
    Abc_Print( -2, "\t-Q num : percentage propability of a variable present in the output cube [default = %d]\n", ProbO );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : output file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCover( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fVerbose;
    int fUseSop;
    int fUseEsop;
    int fUseInvs;
    int nFaninMax;
    int nCubesMax;
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    fUseSop   =  1;
    fUseEsop  =  0;
    fVerbose  =  0;
    fUseInvs  =  1;
    nFaninMax =  8;
    nCubesMax =  8;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IPsxivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nFaninMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFaninMax < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nCubesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCubesMax < 0 )
                goto usage;
            break;
        case 's':
            fUseSop ^= 1;
            break;
        case 'x':
            fUseEsop ^= 1;
            break;
        case 'i':
            fUseInvs ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for strashed networks.\n" );
        return 1;
    }

    // run the command
    pNtkRes = Abc_NtkSopEsopCover( pNtk, nFaninMax, nCubesMax, fUseEsop, fUseSop, fUseInvs, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: cover [-IP num] [-sxvh]\n" );
    Abc_Print( -2, "\t         decomposition into a network of SOP/ESOP PLAs\n" );
    Abc_Print( -2, "\t         (this command is known to have bugs)\n");
    Abc_Print( -2, "\t-I num : maximum number of inputs [default = %d]\n", nFaninMax );
    Abc_Print( -2, "\t-P num : maximum number of products [default = %d]\n", nCubesMax );
    Abc_Print( -2, "\t-s     : toggle the use of SOPs [default = %s]\n", fUseSop? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggle the use of ESOPs [default = %s]\n", fUseEsop? "yes": "no" );
//    Abc_Print( -2, "\t-i     : toggle the use of interters [default = %s]\n", fUseInvs? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandInter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtk1, * pNtk2, * pNtkRes = NULL;
    char ** pArgvNew;
    int nArgcNew;
    int c, fDelete1, fDelete2;
    int fRelation;
    int fVerbose;
    extern Abc_Ntk_t * Abc_NtkInter( Abc_Ntk_t * pNtkOn, Abc_Ntk_t * pNtkOff, int fRelation, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fRelation = 0;
    fVerbose  = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "rvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'r':
            fRelation ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( !Abc_NtkPrepareTwoNtks( stdout, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2, 1 ) )
        return 1;
    if ( nArgcNew == 0 )
    {
        Abc_Obj_t * pObj;
        int i;
        Abc_Print( -1, "Deriving new circuit structure for the current network.\n" );
        Abc_NtkForEachPo( pNtk2, pObj, i )
            Abc_ObjXorFaninC( pObj, 0 );
    }
    if ( fRelation && Abc_NtkCoNum(pNtk1) != 1 )
    {
        Abc_Print( -1, "Computation of interplants as a relation only works for single-output functions.\n" );
        Abc_Print( -1, "Use command \"cone\" to extract one output cone from the multi-output network.\n" );
    }
    else
        pNtkRes = Abc_NtkInter( pNtk1, pNtk2, fRelation, fVerbose );
    if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
    if ( fDelete2 ) Abc_NtkDelete( pNtk2 );

    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: inter [-rvh] <onset.blif> <offset.blif>\n" );
    Abc_Print( -2, "\t         derives interpolant of two networks representing onset and offset;\n" );
    Abc_Print( -2, "\t-r     : toggle computing interpolant as a relation [default = %s]\n", fRelation? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t         \n" );
    Abc_Print( -2, "\t         Comments:\n" );
    Abc_Print( -2, "\t         \n" );
    Abc_Print( -2, "\t         The networks given on the command line should have the same CIs/COs.\n" );
    Abc_Print( -2, "\t         If only one network is given on the command line, this network\n" );
    Abc_Print( -2, "\t         is assumed to be the offset, while the current network is the onset.\n" );
    Abc_Print( -2, "\t         If no network is given on the command line, the current network is\n" );
    Abc_Print( -2, "\t         assumed to be the onset and its complement is taken to be the offset.\n" );
    Abc_Print( -2, "\t         The resulting interpolant is stored as the current network.\n" );
    Abc_Print( -2, "\t         To verify that the interpolant agrees with the onset and the offset,\n" );
    Abc_Print( -2, "\t         save it in file \"inter.blif\" and run the following:\n" );
    Abc_Print( -2, "\t         (a) \"miter -i <onset.blif> <inter.blif>; iprove\"\n" );
    Abc_Print( -2, "\t         (b) \"miter -i <inter.blif> <offset_inv.blif>; iprove\"\n" );
    Abc_Print( -2, "\t         where <offset_inv.blif> is the network derived by complementing the\n" );
    Abc_Print( -2, "\t         outputs of <offset.blif>: \"r <offset.blif>; st -i; w <offset_inv.blif>\"\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDouble( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int nFrames;
    int fVerbose;
    extern Abc_Ntk_t * Abc_NtkDouble( Abc_Ntk_t * pNtk );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nFrames    = 50;
    fVerbose   =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsSopLogic(pNtk) )
    {
        Abc_Print( -1, "Only works for logic SOP networks.\n" );
        return 1;
    }

    pNtkRes = Abc_NtkDouble( pNtk );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: double [-vh]\n" );
    Abc_Print( -2, "\t         puts together two parallel copies of the current network\n" );
//    Abc_Print( -2, "\t-F num : the number of frames to simulate [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBb2Wb( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkConvertBb2Wb( char * pFileNameIn, char * pFileNameOut, int fSeq, int fVerbose );
    int c;
    int fSeq;
    int fVerbose;
    // set defaults
    fSeq = 0;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "svh" ) ) != EOF )
    {
        switch ( c )
        {
        case 's':
            fSeq ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 2 )
    {
        Abc_Print( -1, "Expecting two files names on the command line.\n" );
        goto usage;
    }
    Abc_NtkConvertBb2Wb( argv[globalUtilOptind], argv[globalUtilOptind+1], fSeq, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: bb2wb [-svh] <file_in> <file_out>\n" );
    Abc_Print( -2, "\t             replaces black boxes by white boxes with AND functions\n" );
    Abc_Print( -2, "\t             (file names should have standard extensions, e.g. \"blif\")\n" );
    Abc_Print( -2, "\t-s         : toggle using sequential white boxes [default = %s]\n", fSeq? "yes": "no" );
    Abc_Print( -2, "\t-v         : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h         : print the command usage\n");
    Abc_Print( -2, "\t<file_in>  : input file with design containing black boxes\n");
    Abc_Print( -2, "\t<file_out> : output file with design containing white boxes\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandOutdec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkDarOutdec( Abc_Ntk_t * pNtk, int nLits, int fVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Ntk_t * pNtkRes;
    int c, nLits = 1;
    int fVerbose = 0;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Lvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLits = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLits < 1 || nLits > 2 )
            {
                Abc_Print( 1,"Currently, command \"outdec\" works for 1-lit and 2-lit primes only.\n" );
                goto usage;
            }
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for strashed networks.\n" );
        return 1;
    }
    pNtkRes = Abc_NtkDarOutdec( pNtk, nLits, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: outdec [-Lvh]\n" );
    Abc_Print( -2, "\t         performs prime decomposition of the first output\n" );
    Abc_Print( -2, "\t-L num : the number of literals in the primes [default = %d]\n", nLits );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandNodeDup( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkNodeDup( Abc_Ntk_t * pNtk, int nLimit, int fVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Ntk_t * pNtkRes;
    int c, nLimit = 30;
    int fVerbose = 0;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for logic networks.\n" );
        return 1;
    }
    if ( nLimit < 2 )
    {
        Abc_Print( -1, "The fanout limit should be more than 1.\n" );
        return 1;
    }
    pNtkRes = Abc_NtkNodeDup( pNtk, nLimit, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: nodedup [-Nvh]\n" );
    Abc_Print( -2, "\t         duplicates internal nodes with high fanout\n" );
    Abc_Print( -2, "\t-N num : the number of fanouts to start duplication [default = %d]\n", nLimit );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandWrap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * pFileName = NULL, * pFileName2 = NULL;
    FILE * pFile = NULL, * pFile2 = NULL;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 2 )
    {
        Abc_Print( 1,"Two file names are expected on the command line.\n" );
        return 0;
    }
    pFileName  = argv[globalUtilOptind];
    pFileName2 = argv[globalUtilOptind+1];
    pFile  = fopen( pFileName, "rb" );
    pFile2 = fopen( pFileName2, "wb" );
    if ( pFile && pFile2 )
    {
        char Buffer[1000];
        while ( fgets( Buffer, 1000, pFile ) != NULL )
        {
            if ( Buffer[strlen(Buffer)-1] == '\n' )
                Buffer[strlen(Buffer)-1] = 0;            
            if ( Buffer[strlen(Buffer)-1] == '\r' )
                Buffer[strlen(Buffer)-1] = 0;
            fprintf( pFile2, "  printf(\"%s\\n\");\n", Buffer );
        }
    }
    if ( pFile  ) fclose(pFile);   
    if ( pFile2 ) fclose(pFile2);   
    return 0;

usage:
    Abc_Print( -2, "usage: wrap [-h] <file> <file2>\n" );
    Abc_Print( -2, "\t           wrapping lines\n" );
    Abc_Print( -2, "\t<file>   : input text file\n");
    Abc_Print( -2, "\t<file2>  : output text file\n");    
    return 1;

}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestColor( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_ColorTest();
    Abc_ColorTest();
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTest( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_Gen2CodeTest();
    extern void Dau_NetworkEnumTest();
    //Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int nCutMax      =  1;
    int nLeafMax     =  4;
    int nDivMax      =  2;
    int nDecMax      =  3;
    int nNumOnes     =  0;
    int fNewAlgo     =  0;
    int fNewOrder    =  0;
    int fVerbose     =  0;
    int fVeryVerbose =  0;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CKDNMaovwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutMax < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLeafMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLeafMax < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nDivMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDivMax < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nDecMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDecMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nNumOnes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNumOnes < 0 )
                goto usage;
            break;
        case 'a':
            fNewAlgo ^= 1;
            break;
        case 'o':
            fNewOrder ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
/*
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
*/
/*
    if ( Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for logic networks.\n" );
        return 1;
    }
*/
/*
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( -1, "Only works for sequential networks.\n" );
        return 1;
    }
*/

/*
    if ( pNtk )
    {
        extern Abc_Ntk_t * Au_ManPerformTest( Abc_Ntk_t * p, int nCutMax, int nLeafMax, int nDivMax, int nDecMax, int fVerbose, int fVeryVerbose );
        Abc_Ntk_t * pNtkRes = Au_ManPerformTest( pNtk, nCutMax, nLeafMax, nDivMax, nDecMax, fVerbose, fVeryVerbose );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "Command has failed.\n" );
            return 1;
        }
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    }
*/
/*
    if ( pNtk )
    {
        Aig_Man_t * pAig = Abc_NtkToDar( pNtk, 0, 1 );
        Saig_ManBmcTerSimTestPo( pAig );
        Aig_ManStop( pAig );
    }
*/
/*
    if ( !Abc_NtkIsTopo(pNtk) )
    {
        Abc_Print( -1, "Current network is not in a topological order.\n" );
        return 1;
    }
*/
//    if ( pNtk )
//        Abc_NtkMakeLegit( pNtk );
    {
//        extern void Ifd_ManDsdTest();
//        Ifd_ManDsdTest();
    }
/*
    {
        extern void Abc_EnumerateCubeStates();
        extern void Abc_EnumerateCubeStatesZdd();
        if ( fNewAlgo )
            Abc_EnumerateCubeStatesZdd();
        else
            Abc_EnumerateCubeStates();
        return 0;
    }
*/
    {
//        extern void Abc_EnumerateFuncs( int nDecMax, int nDivMax, int fVerbose );
//        Abc_EnumerateFuncs( 4, 7, 0 );
    }
/*
    if ( fNewAlgo )
    {
        extern void Abc_SuppTest( int nOnes, int nVars, int fUseSimple, int fCheck, int fVerbose );
        Abc_SuppTest( nNumOnes, nDecMax, fNewOrder, 0, fVerbose );
    }
    else
    {
        extern void Bmc_EcoMiterTest();
        Bmc_EcoMiterTest();
    }
*/

    {
//        extern void Nf_ManPrepareLibraryTest();
//        Nf_ManPrepareLibraryTest();
//        return 0;
    }
/*
    if ( pNtk )
    {
//        extern Abc_Ntk_t * Abc_NtkBarBufsOnOffTest( Abc_Ntk_t * pNtk );
//        Abc_Ntk_t * pNtkRes = Abc_NtkBarBufsOnOffTest( pNtk );
        extern Abc_Ntk_t * Abc_NtkPcmTest( Abc_Ntk_t * pNtk, int fNewAlgo, int fVerbose );
//        extern Abc_Ntk_t * Abc_NtkPcmTestAig( Abc_Ntk_t * pNtk, int fVerbose );
        Abc_Ntk_t * pNtkRes;
//        if ( Abc_NtkIsLogic(pNtk) )
            pNtkRes = Abc_NtkPcmTest( pNtk, fNewAlgo, fVerbose );
//        else
//            pNtkRes = Abc_NtkPcmTestAig( pNtk, fVerbose );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "Command has failed.\n" );
            return 1;
        }
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    }
*/
/*
    {
        extern void Abc_IsopTestNew();
        Abc_IsopTestNew();
    }
*/
    {
//        extern void Cba_PrsReadBlifTest();
//        Cba_PrsReadBlifTest();
    }
//    Abc_NtkComputePaths( Abc_FrameReadNtk(pAbc) );
    //Dau_NetworkEnumTest();
    //Extra_SimulationTest( nDivMax, nNumOnes, fNewOrder );
    //Mnist_ExperimentWithScaling( nDecMax );
    //Gyx_ProblemSolveTest();
/*
    {
        extern Abc_Ntk_t * Abc_NtkFromArray();
        Abc_Ntk_t * pNtkRes = Abc_NtkFromArray();
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    }
*/
    //Gia_ManTestProblem();
    //Abc_ReadPlaTest( "resub2.pla" );
    return 0;
usage:
    Abc_Print( -2, "usage: test [-CKDNM] [-aovwh] <file_name>\n" );
    Abc_Print( -2, "\t         testbench for new procedures\n" );
    Abc_Print( -2, "\t-C num : the max number of cuts [default = %d]\n", nCutMax );
    Abc_Print( -2, "\t-K num : the max number of leaves [default = %d]\n", nLeafMax );
    Abc_Print( -2, "\t-D num : the max number of divisors [default = %d]\n", nDivMax );
    Abc_Print( -2, "\t-N num : the max number of node inputs [default = %d]\n", nDecMax );
    Abc_Print( -2, "\t-M num : the max number of ones in the vector [default = %d]\n", nNumOnes );
    Abc_Print( -2, "\t-a     : toggle using new algorithm [default = %s]\n", fNewAlgo? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle using new ordering [default = %s]\n", fNewOrder? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing very verbose information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandQuaVar( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, iVar, fUniv, fVerbose, RetValue;
    extern int Abc_NtkQuantify( Abc_Ntk_t * pNtk, int fUniv, int iVar, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    iVar = 0;
    fUniv = 0;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Iuvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            iVar = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iVar < 0 )
                goto usage;
            break;
        case 'u':
            fUniv ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum( pNtk ) )
    {
        Abc_Print( -1, "This command cannot be applied to an AIG with choice nodes.\n" );
        return 1;
    }

    // get the strashed network
    pNtkRes = Abc_NtkStrash( pNtk, 0, 1, 0 );
    RetValue = Abc_NtkQuantify( pNtkRes, fUniv, iVar, fVerbose );
    // clean temporary storage for the cofactors
    Abc_NtkCleanData( pNtkRes );
    Abc_AigCleanup( (Abc_Aig_t *)pNtkRes->pManFunc );
    // check the result
    if ( !RetValue )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: qvar [-I num] [-uvh]\n" );
    Abc_Print( -2, "\t         quantifies one variable using the AIG\n" );
    Abc_Print( -2, "\t-I num : the zero-based index of a variable to quantify [default = %d]\n", iVar );
    Abc_Print( -2, "\t-u     : toggle universal quantification [default = %s]\n", fUniv? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandQuaRel( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, iVar, fInputs, fVerbose;
    extern Abc_Ntk_t * Abc_NtkTransRel( Abc_Ntk_t * pNtk, int fInputs, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    iVar = 0;
    fInputs = 1;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Iqvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            iVar = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iVar < 0 )
                goto usage;
            break;
        case 'q':
            fInputs ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum( pNtk ) )
    {
        Abc_Print( -1, "This command cannot be applied to an AIG with choice nodes.\n" );
        return 1;
    }
    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "This command works only for sequential circuits.\n" );
        return 1;
    }

    // get the strashed network
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        pNtk = Abc_NtkStrash( pNtk, 0, 1, 0 );
        pNtkRes = Abc_NtkTransRel( pNtk, fInputs, fVerbose );
        Abc_NtkDelete( pNtk );
    }
    else
        pNtkRes = Abc_NtkTransRel( pNtk, fInputs, fVerbose );
    // check if the result is available
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: qrel [-qvh]\n" );
    Abc_Print( -2, "\t         computes transition relation of the sequential network\n" );
//    Abc_Print( -2, "\t-I num : the zero-based index of a variable to quantify [default = %d]\n", iVar );
    Abc_Print( -2, "\t-q     : perform quantification of inputs [default = %s]\n", fInputs? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandQuaReach( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, nIters, fVerbose;
    extern Abc_Ntk_t * Abc_NtkReachability( Abc_Ntk_t * pNtk, int nIters, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nIters   = 256;
    fVerbose =   0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum( pNtk ) )
    {
        Abc_Print( -1, "This command cannot be applied to an AIG with choice nodes.\n" );
        return 1;
    }
    if ( !Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "This command works only for combinational transition relations.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }
    if ( Abc_NtkPoNum(pNtk) > 1 )
    {
        Abc_Print( -1, "The transition relation should have one output.\n" );
        return 1;
    }
    if ( Abc_NtkPiNum(pNtk) % 2 != 0 )
    {
        Abc_Print( -1, "The transition relation should have an even number of inputs.\n" );
        return 1;
    }

    pNtkRes = Abc_NtkReachability( pNtk, nIters, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: qreach [-I num] [-vh]\n" );
    Abc_Print( -2, "\t         computes unreachable states using AIG-based quantification\n" );
    Abc_Print( -2, "\t         assumes that the current network is a transition relation\n" );
    Abc_Print( -2, "\t         assumes that the initial state is composed of all zeros\n" );
    Abc_Print( -2, "\t-I num : the number of image computations to perform [default = %d]\n", nIters );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSenseInput( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Vec_Int_t * vResult;
    int c, nConfLim, fVerbose;

    extern Vec_Int_t * Abc_NtkSensitivity( Abc_Ntk_t * pNtk, int nConfLim, int fVerbose );
    // set defaults
    nConfLim   = 1000;
    fVerbose   =    1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Cvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLim < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkGetChoiceNum( pNtk ) )
    {
        Abc_Print( -1, "This command cannot be applied to an AIG with choice nodes.\n" );
        return 1;
    }
    if ( !Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "This command works only for combinational transition relations.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }
    if ( Abc_NtkPoNum(pNtk) < 2 )
    {
        Abc_Print( -1, "The network should have at least two outputs.\n" );
        return 1;
    }

    vResult = Abc_NtkSensitivity( pNtk, nConfLim, fVerbose );
    Vec_IntFree( vResult );
    return 0;

usage:
    Abc_Print( -2, "usage: senseinput [-C num] [-vh]\n" );
    Abc_Print( -2, "\t         computes sensitivity of POs to PIs under constraint\n" );
    Abc_Print( -2, "\t         constraint should be represented as the last PO\n" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", nConfLim );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandIStrash( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes, * pNtkTemp;
    int c;
    extern Abc_Ntk_t * Abc_NtkIvyStrash( Abc_Ntk_t * pNtk );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        pNtkTemp = Abc_NtkStrash( pNtk, 0, 1, 0 );
        pNtkRes = Abc_NtkIvyStrash( pNtkTemp );
        Abc_NtkDelete( pNtkTemp );
    }
    else
        pNtkRes = Abc_NtkIvyStrash( pNtk );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: istrash [-h]\n" );
    Abc_Print( -2, "\t         perform sequential structural hashing\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandICut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c, nInputs;
    extern void Abc_NtkIvyCuts( Abc_Ntk_t * pNtk, int nInputs );

    // set defaults
    nInputs = 5;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Kh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nInputs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nInputs < 0 )
                goto usage;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }

    Abc_NtkIvyCuts( pNtk, nInputs );
    return 0;

usage:
    Abc_Print( -2, "usage: icut [-K num] [-h]\n" );
    Abc_Print( -2, "\t         computes sequential cuts of the given size\n" );
    Abc_Print( -2, "\t-K num : the number of cut inputs (2 <= num <= 6) [default = %d]\n", nInputs );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandIRewrite( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, fUpdateLevel, fUseZeroCost, fVerbose;
    extern Abc_Ntk_t * Abc_NtkIvyRewrite( Abc_Ntk_t * pNtk, int fUpdateLevel, int fUseZeroCost, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fUpdateLevel = 1;
    fUseZeroCost = 0;
    fVerbose     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lzvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'z':
            fUseZeroCost ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }

    pNtkRes = Abc_NtkIvyRewrite( pNtk, fUpdateLevel, fUseZeroCost, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: irw [-lzvh]\n" );
    Abc_Print( -2, "\t         perform combinational AIG rewriting\n" );
    Abc_Print( -2, "\t-l     : toggle preserving the number of levels [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle using zero-cost replacements [default = %s]\n", fUseZeroCost? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDRewrite( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    Dar_RwrPar_t Pars, * pPars = &Pars;
    int c;

    extern Abc_Ntk_t * Abc_NtkDRewrite( Abc_Ntk_t * pNtk, Dar_RwrPar_t * pPars );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Dar_ManDefaultRwrParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CNMflzrvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutsMax < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSubgMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSubgMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMinSaved = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMinSaved < 0 )
                goto usage;
            break;
        case 'f':
            pPars->fFanout ^= 1;
            break;
        case 'l':
            pPars->fUpdateLevel ^= 1;
            break;
        case 'z':
            pPars->fUseZeros ^= 1;
            break;
        case 'r':
            pPars->fRecycle ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pPars->fUseZeros )
        pPars->nMinSaved = 0;
    if ( pPars->nMinSaved == 0 )
        pPars->fUseZeros = 1;
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }
    pNtkRes = Abc_NtkDRewrite( pNtk, pPars );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: drw [-C num] [-NM num] [-lfzrvwh]\n" );
    Abc_Print( -2, "\t         performs combinational AIG rewriting\n" );
    Abc_Print( -2, "\t-C num : the max number of cuts at a node [default = %d]\n", pPars->nCutsMax );
    Abc_Print( -2, "\t-N num : the max number of subgraphs tried [default = %d]\n", pPars->nSubgMax );
    Abc_Print( -2, "\t-M num : the min number of nodes saved after one step (0 <= num) [default = %d]\n", pPars->nMinSaved );
    Abc_Print( -2, "\t-l     : toggle preserving the number of levels [default = %s]\n", pPars->fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle representing fanouts [default = %s]\n", pPars->fFanout? "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle using zero-cost replacements [default = %s]\n", pPars->fUseZeros? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle using cut recycling [default = %s]\n", pPars->fRecycle? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle very verbose printout [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDRefactor( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    Dar_RefPar_t Pars, * pPars = &Pars;
    int c;

    extern Abc_Ntk_t * Abc_NtkDRefactor( Abc_Ntk_t * pNtk, Dar_RefPar_t * pPars );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Dar_ManDefaultRefParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "MKCelzvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMffcMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMffcMin < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLeafMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLeafMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutsMax < 0 )
                goto usage;
            break;
        case 'e':
            pPars->fExtend ^= 1;
            break;
        case 'l':
            pPars->fUpdateLevel ^= 1;
            break;
        case 'z':
            pPars->fUseZeros ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }
    if ( pPars->nLeafMax < 4 || pPars->nLeafMax > 15 )
    {
        Abc_Print( -1, "This command only works for cut sizes 4 <= K <= 15.\n" );
        return 1;
    }
    pNtkRes = Abc_NtkDRefactor( pNtk, pPars );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: drf [-M num] [-K num] [-C num] [-elzvwh]\n" );
    Abc_Print( -2, "\t         performs combinational AIG refactoring\n" );
    Abc_Print( -2, "\t-M num : the min MFFC size to attempt refactoring [default = %d]\n", pPars->nMffcMin );
    Abc_Print( -2, "\t-K num : the max number of cuts leaves [default = %d]\n", pPars->nLeafMax );
    Abc_Print( -2, "\t-C num : the max number of cuts to try at a node [default = %d]\n", pPars->nCutsMax );
    Abc_Print( -2, "\t-e     : toggle extending tbe cut below MFFC [default = %s]\n", pPars->fExtend? "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle preserving the number of levels [default = %s]\n", pPars->fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle using zero-cost replacements [default = %s]\n", pPars->fUseZeros? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle very verbose printout [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDc2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int fBalance, fVerbose, fUpdateLevel, fFanout, fPower, c;

    extern Abc_Ntk_t * Abc_NtkDC2( Abc_Ntk_t * pNtk, int fBalance, int fUpdateLevel, int fFanout, int fPower, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fBalance     = 0;
    fVerbose     = 0;
    fUpdateLevel = 0;
    fFanout      = 1;
    fPower       = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "blfpvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'b':
            fBalance ^= 1;
            break;
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'f':
            fFanout ^= 1;
            break;
        case 'p':
            fPower ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }
    pNtkRes = Abc_NtkDC2( pNtk, fBalance, fUpdateLevel, fFanout, fPower, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: dc2 [-blfpvh]\n" );
    Abc_Print( -2, "\t         performs combinational AIG optimization\n" );
    Abc_Print( -2, "\t-b     : toggle internal balancing [default = %s]\n", fBalance? "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle updating level [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle representing fanouts [default = %s]\n", fFanout? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle power-aware rewriting [default = %s]\n", fPower? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDChoice( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int fBalance, fVerbose, fUpdateLevel, fConstruct, c;
    int nConfMax, nLevelMax;

    extern Abc_Ntk_t * Abc_NtkDChoice( Abc_Ntk_t * pNtk, int fBalance, int fUpdateLevel, int fConstruct, int nConfMax, int nLevelMax, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fBalance     = 1;
    fUpdateLevel = 1;
    fConstruct   = 0;
    nConfMax     = 1000;
    nLevelMax    = 0;
    fVerbose     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CLblcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfMax < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevelMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevelMax < 0 )
                goto usage;
            break;
        case 'b':
            fBalance ^= 1;
            break;
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'c':
            fConstruct ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }
    pNtkRes = Abc_NtkDChoice( pNtk, fBalance, fUpdateLevel, fConstruct, nConfMax, nLevelMax, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: dchoice [-C num] [-L num] [-blcvh]\n" );
    Abc_Print( -2, "\t         performs partitioned choicing using new AIG package\n" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", nConfMax );
    Abc_Print( -2, "\t-L num : the max level of nodes to consider (0 = not used) [default = %d]\n", nLevelMax );
    Abc_Print( -2, "\t-b     : toggle internal balancing [default = %s]\n", fBalance? "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle updating level [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle constructive computation of choices [default = %s]\n", fConstruct? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDch( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Dch_Pars_t Pars, * pPars = &Pars;
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    extern Abc_Ntk_t * Abc_NtkDch( Abc_Ntk_t * pNtk, Dch_Pars_t * pPars );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Dch_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WCSsptgcfrxvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSatVarMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSatVarMax < 0 )
                goto usage;
            break;
        case 's':
            pPars->fSynthesis ^= 1;
            break;
        case 'p':
            pPars->fPower ^= 1;
            break;
        case 't':
            pPars->fSimulateTfo ^= 1;
            break;
        case 'g':
            pPars->fUseGia ^= 1;
            break;
        case 'c':
            pPars->fUseCSat ^= 1;
            break;
        case 'f':
            pPars->fLightSynth ^= 1;
            break;
        case 'r':
            pPars->fSkipRedSupp ^= 1;
            break;
        case 'x':
            pPars->fUseNew ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }
    pNtkRes = Abc_NtkDch( pNtk, pPars );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: dch [-WCS num] [-sptgcfrxvh]\n" );
    Abc_Print( -2, "\t         computes structural choices using a new approach\n" );
    Abc_Print( -2, "\t-W num : the max number of simulation words [default = %d]\n", pPars->nWords );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-S num : the max number of SAT variables [default = %d]\n", pPars->nSatVarMax );
    Abc_Print( -2, "\t-s     : toggle synthesizing three snapshots [default = %s]\n", pPars->fSynthesis? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle power-aware rewriting [default = %s]\n", pPars->fPower? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle simulation of the TFO classes [default = %s]\n", pPars->fSimulateTfo? "yes": "no" );
    Abc_Print( -2, "\t-g     : toggle using GIA to prove equivalences [default = %s]\n", pPars->fUseGia? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle using circuit-based SAT vs. MiniSat [default = %s]\n", pPars->fUseCSat? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle using faster logic synthesis [default = %s]\n", pPars->fLightSynth? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle skipping choices with redundant support [default = %s]\n", pPars->fSkipRedSupp? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggle using new choice computation [default = %s]\n", pPars->fUseNew? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDrwsat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int fBalance, fVerbose, c;

    extern Abc_Ntk_t * Abc_NtkDrwsat( Abc_Ntk_t * pNtk, int fBalance, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fBalance = 0;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "bvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'b':
            fBalance ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }
    pNtkRes = Abc_NtkDrwsat( pNtk, fBalance, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: drwsat [-bvh]\n" );
    Abc_Print( -2, "\t         performs combinational AIG optimization for SAT\n" );
    Abc_Print( -2, "\t-b     : toggle internal balancing [default = %s]\n", fBalance? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandIRewriteSeq( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, fUpdateLevel, fUseZeroCost, fVerbose;
    extern Abc_Ntk_t * Abc_NtkIvyRewriteSeq( Abc_Ntk_t * pNtk, int fUseZeroCost, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fUpdateLevel = 0;
    fUseZeroCost = 0;
    fVerbose     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lzvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'z':
            fUseZeroCost ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }

    pNtkRes = Abc_NtkIvyRewriteSeq( pNtk, fUseZeroCost, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: irws [-zvh]\n" );
    Abc_Print( -2, "\t         perform sequential AIG rewriting\n" );
//    Abc_Print( -2, "\t-l     : toggle preserving the number of levels [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle using zero-cost replacements [default = %s]\n", fUseZeroCost? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandIResyn( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, fUpdateLevel, fVerbose;
    extern Abc_Ntk_t * Abc_NtkIvyResyn( Abc_Ntk_t * pNtk, int fUpdateLevel, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fUpdateLevel = 1;
    fVerbose     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lzvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }

    pNtkRes = Abc_NtkIvyResyn( pNtk, fUpdateLevel, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: iresyn [-lvh]\n" );
    Abc_Print( -2, "\t         performs combinational resynthesis\n" );
    Abc_Print( -2, "\t-l     : toggle preserving the number of levels [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandISat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, fUpdateLevel, fVerbose;
    int nConfLimit;

    extern Abc_Ntk_t * Abc_NtkIvySat( Abc_Ntk_t * pNtk, int nConfLimit, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nConfLimit   = 100000;
    fUpdateLevel = 1;
    fVerbose     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Clzvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }

    pNtkRes = Abc_NtkIvySat( pNtk, nConfLimit, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: isat [-C num] [-vh]\n" );
    Abc_Print( -2, "\t         tries to prove the miter constant 0\n" );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n",    nConfLimit );
//    Abc_Print( -2, "\t-l     : toggle preserving the number of levels [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandIFraig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, fProve, fVerbose, fDoSparse;
    int nConfLimit;
    int nPartSize;
    int nLevelMax;

    extern Abc_Ntk_t * Abc_NtkIvyFraig( Abc_Ntk_t * pNtk, int nConfLimit, int fDoSparse, int fProve, int fTransfer, int fVerbose );
    extern Abc_Ntk_t * Abc_NtkDarFraigPart( Abc_Ntk_t * pNtk, int nPartSize, int nConfLimit, int nLevelMax, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nPartSize    = 0;
    nLevelMax    = 0;
    nConfLimit   = 100;
    fDoSparse    = 1;
    fProve       = 0;
    fVerbose     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PCLspvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nPartSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPartSize < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
         case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevelMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevelMax < 0 )
                goto usage;
            break;
        case 's':
            fDoSparse ^= 1;
            break;
        case 'p':
            fProve ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }

    if ( nPartSize > 0 )
        pNtkRes = Abc_NtkDarFraigPart( pNtk, nPartSize, nConfLimit, nLevelMax, fVerbose );
    else
        pNtkRes = Abc_NtkIvyFraig( pNtk, nConfLimit, fDoSparse, fProve, 0, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: ifraig [-P num] [-C num] [-L num] [-spvh]\n" );
    Abc_Print( -2, "\t         performs fraiging using a new method\n" );
    Abc_Print( -2, "\t-P num : partition size (0 = partitioning is not used) [default = %d]\n", nPartSize );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n", nConfLimit );
    Abc_Print( -2, "\t-L num : limit on node level to fraig (0 = fraig all nodes) [default = %d]\n", nLevelMax );
    Abc_Print( -2, "\t-s     : toggle considering sparse functions [default = %s]\n", fDoSparse? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle proving the miter outputs [default = %s]\n", fProve? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDFraig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, nConfLimit, fDoSparse, fProve, fSpeculate, fChoicing, fVerbose;

    extern Abc_Ntk_t * Abc_NtkDarFraig( Abc_Ntk_t * pNtk, int nConfLimit, int fDoSparse, int fProve, int fTransfer, int fSpeculate, int fChoicing, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nConfLimit   = 100;
    fDoSparse    = 1;
    fProve       = 0;
    fSpeculate   = 0;
    fChoicing    = 0;
    fVerbose     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Csprcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
        case 's':
            fDoSparse ^= 1;
            break;
        case 'p':
            fProve ^= 1;
            break;
        case 'r':
            fSpeculate ^= 1;
            break;
        case 'c':
            fChoicing ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }

    pNtkRes = Abc_NtkDarFraig( pNtk, nConfLimit, fDoSparse, fProve, 0, fSpeculate, fChoicing, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: dfraig [-C num] [-sprcvh]\n" );
    Abc_Print( -2, "\t         performs fraiging using a new method\n" );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n", nConfLimit );
    Abc_Print( -2, "\t-s     : toggle considering sparse functions [default = %s]\n", fDoSparse? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle proving the miter outputs [default = %s]\n", fProve? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle speculative reduction [default = %s]\n", fSpeculate? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle accumulation of choices [default = %s]\n", fChoicing? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCSweep( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, nCutsMax, nLeafMax, fVerbose;

    extern Abc_Ntk_t * Abc_NtkCSweep( Abc_Ntk_t * pNtk, int nCutsMax, int nLeafMax, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nCutsMax  =  8;
    nLeafMax  =  6;
    fVerbose  =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CKvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutsMax < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLeafMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLeafMax < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( nCutsMax < 2 )
    {
        Abc_Print( -1, "The number of cuts cannot be less than 2.\n" );
        return 1;
    }

    if ( nLeafMax < 3 || nLeafMax > 16 )
    {
        Abc_Print( -1, "The number of leaves is infeasible.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }

    pNtkRes = Abc_NtkCSweep( pNtk, nCutsMax, nLeafMax, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: csweep [-C num] [-K num] [-vh]\n" );
    Abc_Print( -2, "\t         performs cut sweeping using a new method\n" );
    Abc_Print( -2, "\t-C num : limit on the number of cuts (C >= 2) [default = %d]\n", nCutsMax );
    Abc_Print( -2, "\t-K num : limit on the cut size (3 <= K <= 16) [default = %d]\n", nLeafMax );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandIProve( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Prove_Params_t Params, * pParams = &Params;
    Abc_Ntk_t * pNtk, * pNtkTemp;
    int c, RetValue, iOut = -1;
    char * pLogFileName = NULL;
    abctime clk;

    extern int Abc_NtkIvyProve( Abc_Ntk_t ** ppNtk, void * pPars );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Prove_ParamsSetDefault( pParams );
    pParams->fUseRewriting = 1;
    pParams->fVerbose      = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NCFGMILrfbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nItersMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nItersMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nMiteringLimitStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nMiteringLimitStart < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nFraigingLimitStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nFraigingLimitStart < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nFraigingLimitMulti = (float)atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nFraigingLimitMulti < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nMiteringLimitLast = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nMiteringLimitLast < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nTotalInspectLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nTotalInspectLimit < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'r':
            pParams->fUseRewriting ^= 1;
            break;
        case 'f':
            pParams->fUseFraiging ^= 1;
            break;
        case 'b':
            pParams->fUseBdds ^= 1;
            break;
        case 'v':
            pParams->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( Abc_NtkLatchNum(pNtk) > 0 )
    {
        Abc_Print( -1, "The network has registers. Use \"dprove\".\n" );
        return 1;
    }

    clk = Abc_Clock();

    if ( Abc_NtkIsStrash(pNtk) )
        pNtkTemp = Abc_NtkDup( pNtk );
    else
        pNtkTemp = Abc_NtkStrash( pNtk, 0, 0, 0 );

    RetValue = Abc_NtkIvyProve( &pNtkTemp, pParams );

    // verify that the pattern is correct
    if ( RetValue == 0 )
    {
        Abc_Obj_t * pObj;
        int i;
        int * pSimInfo = Abc_NtkVerifySimulatePattern( pNtk, pNtkTemp->pModel );
        Abc_NtkForEachCo( pNtk, pObj, i )
            if ( pSimInfo[i] == 1 )
            {
                iOut = i;
                break;
            }
        if ( i == Abc_NtkCoNum(pNtk) )
            Abc_Print( 1, "ERROR in Abc_NtkMiterProve(): Generated counter-example is invalid.\n" );
        ABC_FREE( pSimInfo );
    }
    pAbc->Status = RetValue;
    if ( RetValue == -1 )
        Abc_Print( 1, "UNDECIDED      " );
    else if ( RetValue == 0 )
        Abc_Print( 1, "SATISFIABLE (output = %d) ", iOut );
    else
        Abc_Print( 1, "UNSATISFIABLE  " );
    //Abc_Print( -1, "\n" );

    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkTemp );
    // update counter example
    if ( RetValue == 0 && Abc_NtkLatchNum(pNtkTemp) == 0 )
    {
        Abc_Cex_t * pCex = Abc_CexDeriveFromCombModel( pNtkTemp->pModel, Abc_NtkPiNum(pNtkTemp), 0, iOut );
        Abc_FrameReplaceCex( pAbc, &pCex );
    }
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "iprove" );
    return 0;

usage:
    Abc_Print( -2, "usage: iprove [-NCFGMI num] [-L file] [-rfbvh]\n" );
    Abc_Print( -2, "\t         performs CEC using a new method\n" );
    Abc_Print( -2, "\t-N num : max number of iterations [default = %d]\n", pParams->nItersMax );
    Abc_Print( -2, "\t-C num : max starting number of conflicts in mitering [default = %d]\n", pParams->nMiteringLimitStart );
    Abc_Print( -2, "\t-F num : max starting number of conflicts in fraiging [default = %d]\n", pParams->nFraigingLimitStart );
    Abc_Print( -2, "\t-G num : multiplicative coefficient for fraiging [default = %d]\n", (int)pParams->nFraigingLimitMulti );
    Abc_Print( -2, "\t-M num : max last-gasp number of conflicts in mitering [default = %d]\n", pParams->nMiteringLimitLast );
    Abc_Print( -2, "\t-I num : max number of clause inspections in all SAT calls [default = %d]\n", (int)pParams->nTotalInspectLimit );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n",                            pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-r     : toggle the use of rewriting [default = %s]\n", pParams->fUseRewriting? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle the use of FRAIGing [default = %s]\n", pParams->fUseFraiging? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle the use of BDDs [default = %s]\n", pParams->fUseBdds? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", pParams->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
/*
int Abc_CommandHaig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    FILE * stdout, * pErr;
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int nIters;
    int nSteps;
    int fRetimingOnly;
    int fAddBugs;
    int fUseCnf;
    int fVerbose;

    extern Abc_Ntk_t * Abc_NtkDarHaigRecord( Abc_Ntk_t * pNtk, int nIters, int nSteps, int fRetimingOnly, int fAddBugs, int fUseCnf, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);



    // set defaults
    nIters        = 3;
    nSteps        = 3000;
    fRetimingOnly = 0;
    fAddBugs      = 0;
    fUseCnf       = 0;
    fVerbose      = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ISrbcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nSteps = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSteps < 0 )
                goto usage;
            break;
        case 'r':
            fRetimingOnly ^= 1;
            break;
        case 'b':
            fAddBugs ^= 1;
            break;
        case 'c':
            fUseCnf ^= 1;
            break;
        case 'v':
            fUseCnf ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for strashed networks.\n" );
        return 1;
    }

    pNtkRes = Abc_NtkDarHaigRecord( pNtk, nIters, nSteps, fRetimingOnly, fAddBugs, fUseCnf, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: haig [-IS num] [-rbcvh]\n" );
    Abc_Print( -2, "\t         run a few rounds of comb+seq synthesis to test HAIG recording\n" );
    Abc_Print( -2, "\t         the current network is set to be the result of synthesis performed\n" );
    Abc_Print( -2, "\t         (this network can be verified using command \"dsec\")\n" );
    Abc_Print( -2, "\t         HAIG is written out into the file \"haig.blif\"\n" );
    Abc_Print( -2, "\t         (this HAIG can be proved using \"r haig.blif; st; dprove -abc -F 16\")\n" );
    Abc_Print( -2, "\t-I num : the number of rounds of comb+seq synthesis [default = %d]\n", nIters );
    Abc_Print( -2, "\t-S num : the number of forward retiming moves performed [default = %d]\n", nSteps );
    Abc_Print( -2, "\t-r     : toggle the use of retiming only [default = %s]\n", fRetimingOnly? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle bug insertion [default = %s]\n", fAddBugs? "yes": "no" );
    Abc_Print( -2, "\t-c     : enable CNF-based proof (no speculative reduction) [default = %s]\n", fUseCnf? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}
*/

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandQbf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int nPars;
    int nIters;
    int fDumpCnf;
    int fVerbose;

    extern void Abc_NtkQbf( Abc_Ntk_t * pNtk, int nPars, int nIters, int fDumpCnf, int fVerbose );
    // set defaults
    nPars    =  -1;
    nIters   = 500;
    fDumpCnf =   0;
    fVerbose =   0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PIdvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nPars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPars < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'd':
            fDumpCnf ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "Works only for combinational networks.\n" );
        return 1;
    }
    if ( Abc_NtkPoNum(pNtk) != 1 )
    {
        Abc_Print( -1, "The miter should have one primary output.\n" );
        return 1;
    }
    if ( !(nPars > 0 && nPars < Abc_NtkPiNum(pNtk)) )
    {
        Abc_Print( -1, "The number of parameter variables is invalid (should be > 0 and < PI num).\n" );
        return 1;
    }
    if ( Abc_NtkIsStrash(pNtk) )
        Abc_NtkQbf( pNtk, nPars, nIters, fDumpCnf, fVerbose );
    else
    {
        pNtk = Abc_NtkStrash( pNtk, 0, 1, 0 );
        Abc_NtkQbf( pNtk, nPars, nIters, fDumpCnf, fVerbose );
        Abc_NtkDelete( pNtk );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: qbf [-PI num] [-dvh]\n" );
    Abc_Print( -2, "\t         solves QBF problem EpVxM(p,x)\n" );
    Abc_Print( -2, "\t-P num : number of parameters p (should be the first PIs) [default = %d]\n", nPars );
    Abc_Print( -2, "\t-I num : quit after the given iteration even if unsolved [default = %d]\n", nIters );
    Abc_Print( -2, "\t-d     : toggle dumping QDIMACS file instead of solving [default = %s]\n", fDumpCnf? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t         Consider specification of the two-input XOR and its implementation in the form of a 4:1 MUX:\n\n" );
    Abc_Print( -2, "\t         > # file s.blif\n" );
    Abc_Print( -2, "\t         > .model xor2\n" );
    Abc_Print( -2, "\t         > .inputs d0 d1 d2 d3 a b\n" );
    Abc_Print( -2, "\t         > .outputs F\n" );
    Abc_Print( -2, "\t         > .names a b F\n" );
    Abc_Print( -2, "\t         > 01 1\n" );
    Abc_Print( -2, "\t         > 10 1\n" );
    Abc_Print( -2, "\t         > .end\n\n" );
    Abc_Print( -2, "\t         > # file i.blif\n" );
    Abc_Print( -2, "\t         > .model mux41\n" );
    Abc_Print( -2, "\t         > .inputs d0 d1 d2 d3 a b\n" );
    Abc_Print( -2, "\t         > .outputs F\n" );
    Abc_Print( -2, "\t         > .names d0 d1 d2 d3 a b F\n" );
    Abc_Print( -2, "\t         > 1---00 1\n" );
    Abc_Print( -2, "\t         > -1--10 1\n" );
    Abc_Print( -2, "\t         > --1-01 1\n" );
    Abc_Print( -2, "\t         > ---111 1\n" );
    Abc_Print( -2, "\t         > .end\n\n" );
    Abc_Print( -2, "\t         The following run shows how to assign data inputs to the MUX (the first 4 inputs of the miter) to get the XOR:\n\n" );
    Abc_Print( -2, "\t         > abc 51> miter -n i.blif s.blif; st -i; ps\n" );
    Abc_Print( -2, "\t         > i_s_miter: i/o =    6/    1  lat =    0  and =     15  lev =  6\n\n" );
    Abc_Print( -2, "\t         > abc 53> qbf -P 4\n" );
    Abc_Print( -2, "\t         > Parameters: 0110  Statistics: 0=2 1=2\n" );
    Abc_Print( -2, "\t         > Solved after 1 iterations.  Total runtime =     0.00 sec\n\n" );
    Abc_Print( -2, "\t         > abc 53> &get; &qbf -P 4\n" );
    Abc_Print( -2, "\t         > Parameters: 0110  Statistics: 0=2 1=2\n" );
    Abc_Print( -2, "\t         > The problem is SAT after 2 iterations.  Time =     0.00 sec\n\n" );
    Abc_Print( -2, "\t         What we synthesized is the truth table of the XOR gate!\n" );
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAigSim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int SimulateAigTop( char *fname1, char *fname2, char * mask, int verbose );
    char * pMask = NULL;
    char ** pArgvNew = NULL;
    int nArgcNew = 0;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Mvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a string.\n" );
                goto usage;
            }
            pMask = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 2 ) {
        Abc_Print( -1, "Expecting two files names on the command line.\n" );
        return 1;
    }
    SimulateAigTop( pArgvNew[0], pArgvNew[1], pMask, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: aigsim -M <str> [-vh] <file1> <file2>\n" );
    Abc_Print( -2, "\t           combinational AIG simulation\n" );
    Abc_Print( -2, "\t-M <str> : mask to select inputs for simulation [default = unused]\n" );
    Abc_Print( -2, "\t-v       : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t<file1>  : the first file to simulate\n");
    Abc_Print( -2, "\t<file2>  : the second file to simulate\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandNpnLoad( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Npn_ManLoad( char * pFileName );
    char * pFileName;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 1 )
        goto usage;
    pFileName = argv[globalUtilOptind];
    Npn_ManLoad( pFileName );
    return 0;

usage:
    Abc_Print( -2, "usage: npnload <filename>\n" );
    Abc_Print( -2, "\t         loads previously saved 6-input function library from file\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandNpnSave( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Npn_ManSave( char * pFileName );
    char * pFileName;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 1 )
        goto usage;
    pFileName = argv[globalUtilOptind];
    Npn_ManSave( pFileName );
    return 0;

usage:
    Abc_Print( -2, "usage: npnsave <filename>\n" );
    Abc_Print( -2, "\t         saves current 6-input function library into file\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSendAig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
//    const int BRIDGE_NETLIST = 106;
//    const int BRIDGE_ABS_NETLIST = 107;

    int c, fAndSpace = 1, fAbsNetlist = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ah" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fAndSpace ^= 1;
            break;
        case 'b':
            fAbsNetlist ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( !Abc_FrameIsBridgeMode() )
    {
        Abc_Print( -1, "The bridge mode is not available.\n" );
        return 1;
    }
    if ( fAndSpace )
    {
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( -1, "There is no AIG in the &-space.\n" );
            return 1;
        }
        Gia_ManToBridgeAbsNetlist( stdout, pAbc->pGia, fAbsNetlist ? BRIDGE_ABS_NETLIST : BRIDGE_NETLIST );
    }
    else
    {
        Aig_Man_t * pAig;
        Gia_Man_t * pGia;
        if ( pAbc->pNtkCur == NULL )
        {
            Abc_Print( -1, "There is no network in the main-space.\n" );
            return 1;
        }
        if ( !Abc_NtkIsStrash(pAbc->pNtkCur) )
        {
            Abc_Print( -1, "The main-space network is not an AIG.\n" );
            return 1;
        }
        pAig = Abc_NtkToDar( pAbc->pNtkCur, 0, 1 );
        pGia = Gia_ManFromAig( pAig );
        Aig_ManStop( pAig );
        Gia_ManToBridgeAbsNetlist( stdout, pGia, fAbsNetlist ? BRIDGE_ABS_NETLIST : BRIDGE_NETLIST  );
        Gia_ManStop( pGia );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: send_aig -a\n" );
    Abc_Print( -2, "\t         sends current AIG to the bridge\n" );
    Abc_Print( -2, "\t-a     : toggle sending AIG from &-space [default = %s]\n", fAndSpace? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle sending netlist tagged as \"abstraction\". [default = %s]\n", fAbsNetlist? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSendStatus( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Gia_ManToBridgeResult( FILE * pFile, int Result, Abc_Cex_t * pCex, int iPoProved );
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( !Abc_FrameIsBridgeMode() )
    {
        Abc_Print( -1, "The bridge mode is not available.\n" );
        return 1;
    }
    if ( pAbc->Status == 0 && pAbc->pCex == NULL )
    {
        Abc_Print( -1, "Status is \"sat\", but current CEX is not available.\n" );
        return 1;
    }
    Gia_ManToBridgeResult( stdout, pAbc->Status, pAbc->pCex, 0 );
    return 0;

usage:
    Abc_Print( -2, "usage: send_status\n" );
    Abc_Print( -2, "\t         sends current status to the bridge\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBackup( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( pAbc->pNtkBackup )
        Abc_NtkDelete( pAbc->pNtkBackup );
    pAbc->pNtkBackup = Abc_NtkDup( pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: backup [-h]\n" );
    Abc_Print( -2, "\t        backs up the current network\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}
int Abc_CommandRestore( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pAbc->pNtkBackup == NULL )
    {
        Abc_Print( -1, "There is no backup network.\n" );
        return 1;
    }
    Abc_FrameReplaceCurrentNetwork( pAbc, Abc_NtkDup(pAbc->pNtkBackup) );
    pAbc->nFrames = -1;
    pAbc->Status = -1;
    return 0;

usage:
    Abc_Print( -2, "usage: restore [-h]\n" );
    Abc_Print( -2, "\t        restores the current network\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMinisat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
#ifdef USE_MINISAT22
    extern int MainSat(int argc, char** argv);
    MainSat( argc, argv );
#else
    printf( "This command is currently disabled.\n" );
#endif
    return 1;
}
int Abc_CommandMinisimp( Abc_Frame_t * pAbc, int argc, char ** argv )
{
#ifdef USE_MINISAT22
    extern int MainSimp(int argc, char** argv);
    MainSimp( argc, argv );
#else
    printf( "This command is currently disabled.\n" );
#endif
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFraig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char Buffer[100];
    Fraig_Params_t Params, * pParams = &Params;
    Abc_Ntk_t * pNtk, * pNtkRes;
    int fAllNodes;
    int fExdc;
    int c;
    int fPartition = 0;
    extern void Abc_NtkFraigPartitionedTime( Abc_Ntk_t * pNtk, void * pParams );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fExdc     = 0;
    fAllNodes = 0;
    memset( pParams, 0, sizeof(Fraig_Params_t) );
    pParams->nPatsRand  = 2048; // the number of words of random simulation info
    pParams->nPatsDyna  = 2048; // the number of words of dynamic simulation info
    pParams->nBTLimit   =  100; // the max number of backtracks to perform
    pParams->fFuncRed   =    1; // performs only one level hashing
    pParams->fFeedBack  =    1; // enables solver feedback
    pParams->fDist1Pats =    1; // enables distance-1 patterns
    pParams->fDoSparse  =    1; // performs equiv tests for sparse functions
    pParams->fChoicing  =    0; // enables recording structural choices
    pParams->fTryProve  =    0; // tries to solve the final miter
    pParams->fVerbose   =    0; // the verbosiness flag
    pParams->fVerboseP  =    0; // the verbosiness flag
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "RDCrscptvaeh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nPatsRand = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nPatsRand < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nPatsDyna = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nPatsDyna < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nBTLimit < 0 )
                goto usage;
            break;

        case 'r':
            pParams->fFuncRed ^= 1;
            break;
        case 's':
            pParams->fDoSparse ^= 1;
            break;
        case 'c':
            pParams->fChoicing ^= 1;
            break;
        case 'p':
            pParams->fTryProve ^= 1;
            break;
        case 'v':
            pParams->fVerbose ^= 1;
            break;
        case 't':
            fPartition ^= 1;
            break;
        case 'a':
            fAllNodes ^= 1;
            break;
        case 'e':
            fExdc ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) && !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Can only fraig a logic network or an AIG.\n" );
        return 1;
    }

    // report the proof
    pParams->fVerboseP = pParams->fTryProve;

    // get the new network
    if ( fPartition )
    {
        pNtkRes = Abc_NtkDup( pNtk );
        if ( Abc_NtkIsStrash(pNtk) )
            Abc_NtkFraigPartitionedTime( pNtk, &Params );
        else
        {
            pNtk = Abc_NtkStrash( pNtk, fAllNodes, !fAllNodes, 0 );
            Abc_NtkFraigPartitionedTime( pNtk, &Params );
            Abc_NtkDelete( pNtk );
        }
    }
    else
    {
        if ( Abc_NtkIsStrash(pNtk) )
            pNtkRes = Abc_NtkFraig( pNtk, &Params, fAllNodes, fExdc );
        else
        {
            pNtk = Abc_NtkStrash( pNtk, fAllNodes, !fAllNodes, 0 );
            pNtkRes = Abc_NtkFraig( pNtk, &Params, fAllNodes, fExdc );
            Abc_NtkDelete( pNtk );
        }
    }
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Fraiging has failed.\n" );
        return 1;
    }

    if ( pParams->fTryProve ) // report the result
        Abc_NtkMiterReport( pNtkRes );

    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    sprintf(Buffer, "%d", pParams->nBTLimit );
    Abc_Print( -2, "usage: fraig [-R num] [-D num] [-C num] [-rscpvtah]\n" );
    Abc_Print( -2, "\t         transforms a logic network into a functionally reduced AIG\n" );
    Abc_Print( -2, "\t         (known bugs: takes an UNSAT miter and returns a SAT one)\n");
    Abc_Print( -2, "\t         (there are newer fraiging commands, \"ifraig\" and \"dfraig\")\n" );
    Abc_Print( -2, "\t-R num : number of random patterns (127 < num < 32769) [default = %d]\n",     pParams->nPatsRand );
    Abc_Print( -2, "\t-D num : number of systematic patterns (127 < num < 32769) [default = %d]\n", pParams->nPatsDyna );
    Abc_Print( -2, "\t-C num : number of backtracks for one SAT problem [default = %s]\n",    pParams->nBTLimit==-1? "infinity" : Buffer );
    Abc_Print( -2, "\t-r     : toggle functional reduction [default = %s]\n",                 pParams->fFuncRed? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle considering sparse functions [default = %s]\n",         pParams->fDoSparse? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle accumulation of choices [default = %s]\n",              pParams->fChoicing? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle proving the miter outputs [default = %s]\n",              pParams->fTryProve? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n",                       pParams->fVerbose?  "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle functional sweeping using EXDC [default = %s]\n",       fExdc? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle between all nodes and DFS nodes [default = %s]\n",      fAllNodes? "all": "dfs" );
    Abc_Print( -2, "\t-t     : toggle using partitioned representation [default = %s]\n",     fPartition? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFraigTrust( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fDuplicate;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fDuplicate = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "dh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'd':
            fDuplicate ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // get the new network
    pNtkRes = Abc_NtkFraigTrust( pNtk );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Fraiging in the trust mode has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: fraig_trust [-h]\n" );
    Abc_Print( -2, "\t        transforms the current network into an AIG assuming it is FRAIG with choices\n" );
//    Abc_Print( -2, "\t-d    : toggle duplication of logic [default = %s]\n", fDuplicate? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFraigStore( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fDuplicate;

    // set defaults
    fDuplicate = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "dh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'd':
            fDuplicate ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // get the new network
    if ( !Abc_NtkFraigStore( pNtk ) )
    {
        Abc_Print( -1, "Fraig storing has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: fraig_store [-h]\n" );
    Abc_Print( -2, "\t        saves the current network in the AIG database\n" );
//    Abc_Print( -2, "\t-d    : toggle duplication of logic [default = %s]\n", fDuplicate? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFraigRestore( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int nPatsRand  =    0;    // the number of words of random simulation info
    int nPatsDyna  =    0;    // the number of words of dynamic simulation info
    int nBTLimit   = 1000;    // the max number of backtracks to perform

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "RDCh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nPatsRand = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPatsRand < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nPatsDyna = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPatsDyna < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimit < 0 )
                goto usage;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // get the new network
    pNtkRes = Abc_NtkFraigRestore( nPatsRand, nPatsDyna, nBTLimit );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Fraig restoring has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: fraig_restore [-RDC num] [-h]\n" );
    Abc_Print( -2, "\t         makes the current network by fraiging the AIG database\n" );
    Abc_Print( -2, "\t-R num : number of random patterns (127 < num < 32769) [default = design-dependent]\n" );
    Abc_Print( -2, "\t-D num : number of systematic patterns (127 < num < 32769) [default = design-dependent]\n" );
    Abc_Print( -2, "\t-C num : number of backtracks for one SAT problem [default = %d]\n",  nBTLimit );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFraigClean( Abc_Frame_t * pAbc, int argc, char ** argv )
{
//    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fDuplicate;
    // set defaults
    fDuplicate = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "dh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'd':
            fDuplicate ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    Abc_NtkFraigStoreClean();
    return 0;

usage:
    Abc_Print( -2, "usage: fraig_clean [-h]\n" );
    Abc_Print( -2, "\t        cleans the internal FRAIG storage\n" );
//    Abc_Print( -2, "\t-d    : toggle duplication of logic [default = %s]\n", fDuplicate? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFraigSweep( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseInv;
    int fExdc;
    int fVerbose;
    int fVeryVerbose;
    extern int Abc_NtkFraigSweep( Abc_Ntk_t * pNtk, int fUseInv, int fExdc, int fVerbose, int fVeryVerbose );
    // set defaults
    fUseInv   = 1;
    fExdc     = 0;
    fVerbose  = 0;
    fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ievwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'i':
            fUseInv ^= 1;
            break;
        case 'e':
            fExdc ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Cannot sweep AIGs (use \"fraig\").\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Transform the current network into a logic network.\n" );
        return 1;
    }
    // modify the current network
    if ( !Abc_NtkFraigSweep( pNtk, fUseInv, fExdc, fVerbose, fVeryVerbose ) )
    {
        Abc_Print( -1, "Sweeping has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: fraig_sweep [-evwh]\n" );
    Abc_Print( -2, "\t        performs technology-dependent sweep\n" );
    Abc_Print( -2, "\t-e    : toggle functional sweeping using EXDC [default = %s]\n", fExdc? "yes": "no" );
    Abc_Print( -2, "\t-v    : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w    : prints equivalence class information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFraigDress( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkDress( Abc_Ntk_t * pNtk, char * pFileName, int fVerbose );
    extern void Abc_NtkDress2( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nConflictLimit, int fVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pNtk2;
    char * pFileName;
    int c;
    int nConfs;
    int fVerbose;
    // set defaults
    nConfs   = 1000;
    fVerbose =    0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Cvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfs < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for logic networks.\n" );
        return 1;
    }
    if ( argc != globalUtilOptind && argc != globalUtilOptind + 1 )
        goto usage;
    if ( argc == globalUtilOptind && Abc_NtkSpec(pNtk) == NULL )
    {
        Abc_Print( -1, "The current network has no spec.\n" );
        return 1;
    }
    // get the input file name
    pFileName = (argc == globalUtilOptind + 1) ? argv[globalUtilOptind] : Abc_NtkSpec(pNtk);
    // modify the current network
//    Abc_NtkDress( pNtk, pFileName, fVerbose );
    pNtk2 = Io_Read( pFileName, Io_ReadFileType(pFileName), 1, 0 );
    Abc_NtkDress2( pNtk, pNtk2, nConfs, fVerbose );
    Abc_NtkDelete( pNtk2 );
    return 0;

usage:
    Abc_Print( -2, "usage: dress [-C num] [-vh] <file>\n" );
    Abc_Print( -2, "\t         transfers internal node names from file to the current network\n" );
    Abc_Print( -2, "\t<file> : network with names (if not given, the current network spec is used)\n" );
    Abc_Print( -2, "\t-C num : the maximum number of conflicts at each node [default = %d]\n", nConfs );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDumpEquiv( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkDumpEquiv( Abc_Ntk_t * pNtks[2], char * pFileName, int nConfs, int fByName, int fVerbose );
    Abc_Ntk_t * pNtks[2] = {NULL};
    char * pFileName[2], * pFileNameOut;
    int c, nConfs = 1000, fByName = 1, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Cnvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfs < 0 )
                goto usage;
            break;
        case 'n':
            fByName ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 3 )
    {
        Abc_Print( -1, "Expecting three file names on the command line.\n" );
        goto usage;
    }
    pFileName[0] = argv[globalUtilOptind];
    pFileName[1] = argv[globalUtilOptind+1];
    pFileNameOut = argv[globalUtilOptind+2];
    for ( c = 0; c < 2; c++ )
    {
        pNtks[c] = Io_Read( pFileName[c], Io_ReadFileType(pFileName[c]), 1, 0 );
        if ( pNtks[c] == NULL )
            goto usage;
        Abc_NtkToAig( pNtks[c] );
    }
//    if ( Abc_NtkCiNum(pNtks[0]) != Abc_NtkCiNum(pNtks[1]) )
//        Abc_Print( -1, "The number of primary inputs of networks \"%s\" and \"%s\" does not match.\n", Abc_NtkName(pNtks[0]), Abc_NtkName(pNtks[1]) );
//    else if ( Abc_NtkCoNum(pNtks[0]) != Abc_NtkCoNum(pNtks[1]) )
//        Abc_Print( -1, "The number of primary outputs of networks \"%s\" and \"%s\" does not match.\n", Abc_NtkName(pNtks[0]), Abc_NtkName(pNtks[1]) );
//    else
        Abc_NtkDumpEquiv( pNtks, pFileNameOut, nConfs, fByName, fVerbose );
    Abc_NtkDelete( pNtks[0] );
    Abc_NtkDelete( pNtks[1] );
    return 0;

usage:
    Abc_Print( -2, "usage: dump_equiv [-C num] [-nvh] <file1.blif> <file2.blif> <file_dump_equiv.txt>\n" );
    Abc_Print( -2, "\t          computes equivalence classes of nodes in <file1> and <file2>\n" );
    Abc_Print( -2, "\t          By default this procedure performs matching of primary inputs by name.\n" );
    Abc_Print( -2, "\t          Those inputs that cannot be matched are treated as free variables.\n" );
    Abc_Print( -2, "\t          There is no effort to match primary outputs. Indeed, if two outputs\n" );
    Abc_Print( -2, "\t          are equivalent, they will belong to the same equivalence class in the end.\n" );
    Abc_Print( -2, "\t-C num  : the maximum number of conflicts at each node [default = %d]\n", nConfs );
    Abc_Print( -2, "\t-n      : enable matching of primary inputs by name [default = %s]\n", fByName? "yes": "no" );
    Abc_Print( -2, "\t-v      : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t<file1> : first network whose nodes are considered\n" );
    Abc_Print( -2, "\t<file2> : second network whose nodes are considered\n" );
    Abc_Print( -2, "\t<file_dump_equiv> : text file with node equivalence classes\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRecStart3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * FileName, * pTemp;
    char ** pArgvNew;
    int c, nArgcNew;
    FILE * pFile;
    Gia_Man_t * pGia = NULL;
    int nVars = 6;
    int nCuts = 32;
    int fFuncOnly = 0;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCfvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 1 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCuts < 1 )
                goto usage;
            break;
        case 'f':
            fFuncOnly ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( !(nVars >= 3 && nVars <= 16) )
    {
        Abc_Print( -1, "The range of allowed values is 3 <= K <= 16.\n" );
        return 0;
    }
    if ( Abc_NtkRecIsRunning3() )
    {
        Abc_Print( -1, "The AIG subgraph recording is already started.\n" );
        return 0;
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
        Abc_Print( 1, "File name is not given on the command line. Starting a new record.\n" );
    else
    {
        // get the input file name
        FileName = pArgvNew[0];
        // fix the wrong symbol
        for ( pTemp = FileName; *pTemp; pTemp++ )
            if ( *pTemp == '>' )
                *pTemp = '\\';
        if ( (pFile = fopen( FileName, "r" )) == NULL )
        {
            Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
            if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", NULL, NULL, NULL, NULL )) )
                Abc_Print( 1, "Did you mean \"%s\"?", FileName );
            Abc_Print( 1, "\n" );
            return 1;
        }
        fclose( pFile );
        pGia = Gia_AigerRead( FileName, 0, 1, 0 );
        if ( pGia == NULL )
        {
            Abc_Print( -1, "Reading AIGER has failed.\n" );
            return 0;
        }
    }
    Abc_NtkRecStart3( pGia, nVars, nCuts, fFuncOnly, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: rec_start3 [-K num] [-C num] [-fvh] <file>\n" );
    Abc_Print( -2, "\t         starts recording AIG subgraphs (should be called for\n" );
    Abc_Print( -2, "\t         an empty network or after reading in a previous record)\n" );
    Abc_Print( -2, "\t-K num : the largest number of inputs [default = %d]\n", nVars );
    Abc_Print( -2, "\t-C num : the max number of cuts used at a node (0 < num < 2^12) [default = %d]\n", nCuts );
    Abc_Print( -2, "\t-f     : toggles recording functions without AIG subgraphs [default = %s]\n", fFuncOnly? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles additional verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : AIGER file with the library\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRecStop3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "dh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( !Abc_NtkRecIsRunning3() )
    {
        Abc_Print( -1, "This command works only after calling \"rec_start3\".\n" );
        return 0;
    }
    Abc_NtkRecStop3();
    return 0;

usage:
    Abc_Print( -2, "usage: rec_stop3 [-h]\n" );
    Abc_Print( -2, "\t        cleans the internal storage for AIG subgraphs\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRecPs3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fPrintLib = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ph" ) ) != EOF )
    {
        switch ( c )
        {
        case 'p':
            fPrintLib ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( !Abc_NtkRecIsRunning3() )
    {
        Abc_Print( -1, "This command works for AIGs only after calling \"rec_start3\".\n" );
        return 0;
    }
    Abc_NtkRecPs3(fPrintLib);
    return 0;

usage:
    Abc_Print( -2, "usage: rec_ps3 [-h]\n" );
    Abc_Print( -2, "\t        prints statistics about the recorded AIG subgraphs\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRecAdd3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fUseSOPB = 0;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "gh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'g':
            fUseSOPB = 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works for AIGs.\n" );
        return 0;
    }
    if ( !Abc_NtkRecIsRunning3() )
    {
        Abc_Print( -1, "This command works for AIGs after calling \"rec_start3\".\n" );
        return 0;
    }
    Abc_NtkRecAdd3( pNtk, fUseSOPB );
    return 0;

usage:
    Abc_Print( -2, "usage: rec_add3 [-h]\n" );
    Abc_Print( -2, "\t        adds subgraphs from the current network to the set\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRecDump3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkRecDumpTt3( char * pFileName, int fBinary );
    char * FileName;
    char ** pArgvNew;
    int nArgcNew;
    Gia_Man_t * pGia;
    int fAscii = 0;
    int fBinary = 0;
    int c;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "abh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fAscii ^= 1;
            break;
        case 'b':
            fBinary ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( !Abc_NtkRecIsRunning3() )
    {
        Abc_Print( -1, "The AIG subgraph recording is not started.\n" );
        return 1;
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    // get the input file name
    FileName = pArgvNew[0];
    if ( fAscii )
        Abc_NtkRecDumpTt3( FileName, 0 );
    else if ( fBinary )
        Abc_NtkRecDumpTt3( FileName, 1 );
    else
    {
        pGia = Abc_NtkRecGetGia3();
        if( pGia == NULL )
        {
            Abc_Print( 0, "Library AIG is not available.\n" );
            return 1;
        }
        if( Gia_ManPoNum(pGia) == 0 )
        {
            Abc_Print( 0, "No structure in the library.\n" );
            return 1;
        }
        Gia_AigerWrite( pGia, FileName, 0, 0, 0 );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: rec_dump3 [-abh] <file>\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t-a     : toggles dumping TTs into an ASCII file [default = %s]\n", fAscii? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggles dumping TTs into a binary file [default = %s]\n", fBinary? "yes": "no" );
    Abc_Print( -2, "\t<file> : AIGER file to write the library\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRecMerge3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    char * FileName, * pTemp;
    char ** pArgvNew;
    int nArgcNew;
    FILE * pFile;
    Gia_Man_t * pGia = NULL;

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "dh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( !Abc_NtkRecIsRunning3() )
    {
        Abc_Print( -1, "This command works for AIGs only after calling \"rec_start3\".\n" );
        return 0;
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    else
    {
        // get the input file name
        FileName = pArgvNew[0];
        // fix the wrong symbol
        for ( pTemp = FileName; *pTemp; pTemp++ )
            if ( *pTemp == '>' )
                *pTemp = '\\';
        if ( (pFile = fopen( FileName, "r" )) == NULL )
        {
            Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
            if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", NULL, NULL, NULL, NULL )) )
                Abc_Print( 1, "Did you mean \"%s\"?", FileName );
            Abc_Print( 1, "\n" );
            return 1;
        }
        fclose( pFile );
        pGia = Gia_AigerRead( FileName, 0, 1, 0 );
        if ( pGia == NULL )
        {
            Abc_Print( -1, "Reading AIGER has failed.\n" );
            return 0;
        }
    }
    Abc_NtkRecLibMerge3(pGia);
    Gia_ManStop( pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: rec_merge3 [-h] <file>\n" );
    Abc_Print( -2, "\t         merge libraries\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : AIGER file with the library\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    char Buffer[100];
    double DelayTarget;
    double AreaMulti;
    double DelayMulti;
    float LogFan = 0;
    float Slew = 0; // choose based on the library
    float Gain = 250;
    int nGatesMin = 0;
    int fAreaOnly;
    int fRecovery;
    int fSweep;
    int fSwitching;
    int fSkipFanout;
    int fUseProfile;
    int fUseBuffs;
    int fVerbose;
    int c;
    extern Abc_Ntk_t * Abc_NtkMap( Abc_Ntk_t * pNtk, Mio_Library_t* userLib, double DelayTarget, double AreaMulti, double DelayMulti, float LogFan, float Slew, float Gain, int nGatesMin, int fRecovery, int fSwitching, int fSkipFanout, int fUseProfile, int fUseBuffs, int fVerbose );
    extern int Abc_NtkFraigSweep( Abc_Ntk_t * pNtk, int fUseInv, int fExdc, int fVerbose, int fVeryVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    DelayTarget =-1;
    AreaMulti   = 0;
    DelayMulti  = 0;
    fAreaOnly   = 0;
    fRecovery   = 1;
    fSweep      = 0;
    fSwitching  = 0;
    fSkipFanout = 0;
    fUseProfile = 0;
    fUseBuffs   = 0;
    fVerbose    = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "DABFSGMarspfuovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            DelayTarget = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( DelayTarget <= 0.0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a floating point number.\n" );
                goto usage;
            }
            AreaMulti = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by a floating point number.\n" );
                goto usage;
            }
            DelayMulti = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a floating point number.\n" );
                goto usage;
            }
            LogFan = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( LogFan < 0.0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a floating point number.\n" );
                goto usage;
            }
            Slew = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Slew <= 0.0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by a floating point number.\n" );
                goto usage;
            }
            Gain = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Gain <= 0.0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nGatesMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nGatesMin < 0 )
                goto usage;
            break;
        case 'a':
            fAreaOnly ^= 1;
            break;
        case 'r':
            fRecovery ^= 1;
            break;
        case 's':
            fSweep ^= 1;
            break;
        case 'p':
            fSwitching ^= 1;
            break;
        case 'f':
            fSkipFanout ^= 1;
            break;
        case 'u':
            fUseProfile ^= 1;
            break;
        case 'o':
            fUseBuffs ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( fAreaOnly )
        DelayTarget = ABC_INFINITY;

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        pNtk = Abc_NtkStrash( pNtk, 0, 0, 0 );
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Strashing before mapping has failed.\n" );
            return 1;
        }
        pNtk = Abc_NtkBalance( pNtkRes = pNtk, 0, 0, 1 );
        Abc_NtkDelete( pNtkRes );
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Balancing before mapping has failed.\n" );
            return 1;
        }
        Abc_Print( 0, "The network was strashed and balanced before mapping.\n" );
        // get the new network
        pNtkRes = Abc_NtkMap( pNtk, /*userLib=*/NULL, DelayTarget, AreaMulti, DelayMulti, LogFan, Slew, Gain, nGatesMin, fRecovery, fSwitching, fSkipFanout, fUseProfile, fUseBuffs, fVerbose );
        if ( pNtkRes == NULL )
        {
            Abc_NtkDelete( pNtk );
            Abc_Print( -1, "Mapping has failed.\n" );
            return 1;
        }
        Abc_NtkDelete( pNtk );
    }
    else
    {
        // get the new network
        pNtkRes = Abc_NtkMap( pNtk, /*userLib=*/NULL, DelayTarget, AreaMulti, DelayMulti, LogFan, Slew, Gain, nGatesMin, fRecovery, fSwitching, fSkipFanout, fUseProfile, fUseBuffs, fVerbose );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "Mapping has failed.\n" );
            return 1;
        }
    }

    if ( fSweep )
    {
        Abc_NtkFraigSweep( pNtkRes, 0, 0, 0, 0 );
        if ( Abc_NtkHasMapping(pNtkRes) )
        {
            pNtkRes = Abc_NtkDupDfs( pNtk = pNtkRes );
            Abc_NtkDelete( pNtk );
        }
    }

    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    if ( DelayTarget == -1 )
        sprintf(Buffer, "not used" );
    else
        sprintf(Buffer, "%.3f", DelayTarget );
    Abc_Print( -2, "usage: map [-DABFSG float] [-M num] [-arspfuovh]\n" );
    Abc_Print( -2, "\t           performs standard cell mapping of the current network\n" );
    Abc_Print( -2, "\t-D float : sets the global required times [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-A float : \"area multiplier\" to bias gate selection [default = %.2f]\n", AreaMulti );
    Abc_Print( -2, "\t-B float : \"delay multiplier\" to bias gate selection [default = %.2f]\n", DelayMulti );
    Abc_Print( -2, "\t-F float : the logarithmic fanout delay parameter [default = %.2f]\n", LogFan );
    Abc_Print( -2, "\t-S float : the slew parameter used to generate the library [default = %.2f]\n", Slew );
    Abc_Print( -2, "\t-G float : the gain parameter used to generate the library [default = %.2f]\n", Gain );
    Abc_Print( -2, "\t-M num   : skip gate classes whose size is less than this [default = %d]\n", nGatesMin );
    Abc_Print( -2, "\t-a       : toggles area-only mapping [default = %s]\n", fAreaOnly? "yes": "no" );
    Abc_Print( -2, "\t-r       : toggles area recovery [default = %s]\n", fRecovery? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggles sweep after mapping [default = %s]\n", fSweep? "yes": "no" );
    Abc_Print( -2, "\t-p       : optimizes power by minimizing switching [default = %s]\n", fSwitching? "yes": "no" );
    Abc_Print( -2, "\t-f       : do not use large gates to map high-fanout nodes [default = %s]\n", fSkipFanout? "yes": "no" );
    Abc_Print( -2, "\t-u       : use standard-cell profile [default = %s]\n", fUseProfile? "yes": "no" );
    Abc_Print( -2, "\t-o       : toggles using buffers to decouple combinational outputs [default = %s]\n", fUseBuffs? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAmap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Amap_Par_t Pars, * pPars = &Pars;
    Abc_Ntk_t * pNtk, * pNtkRes;
    int fSweep;
    int c;
    extern Abc_Ntk_t * Abc_NtkDarAmap( Abc_Ntk_t * pNtk, Amap_Par_t * pPars );
    extern int Abc_NtkFraigSweep( Abc_Ntk_t * pNtk, int fUseInv, int fExdc, int fVerbose, int fVeryVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fSweep = 0;
    Amap_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FACEQmxisvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->nIterFlow = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIterFlow < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->nIterArea = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIterArea < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutsMax < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->fEpsilon = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->fEpsilon < 0.0 || pPars->fEpsilon > 1.0 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->fADratio = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->fADratio < 0.0 )
                goto usage;
            break;
        case 'm':
            pPars->fUseMuxes ^= 1;
            break;
        case 'x':
            pPars->fUseXors ^= 1;
            break;
        case 'i':
            pPars->fFreeInvs ^= 1;
            break;
        case 's':
            fSweep ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        pNtk = Abc_NtkStrash( pNtk, 0, 0, 0 );
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Strashing before mapping has failed.\n" );
            return 1;
        }
        pNtk = Abc_NtkBalance( pNtkRes = pNtk, 0, 0, 1 );
        Abc_NtkDelete( pNtkRes );
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Balancing before mapping has failed.\n" );
            return 1;
        }
        Abc_Print( 0, "The network was strashed and balanced before mapping.\n" );
        // get the new network
        pNtkRes = Abc_NtkDarAmap( pNtk, pPars );
        if ( pNtkRes == NULL )
        {
            Abc_NtkDelete( pNtk );
            Abc_Print( -1, "Mapping has failed.\n" );
            return 1;
        }
        Abc_NtkDelete( pNtk );
    }
    else
    {
        // get the new network
        pNtkRes = Abc_NtkDarAmap( pNtk, pPars );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "Mapping has failed.\n" );
            return 1;
        }
    }

    if ( fSweep )
    {
        Abc_NtkFraigSweep( pNtkRes, 0, 0, 0, 0 );
        if ( Abc_NtkHasMapping(pNtkRes) )
        {
            pNtkRes = Abc_NtkDupDfs( pNtk = pNtkRes );
            Abc_NtkDelete( pNtk );
        }
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: amap [-FAC <num>] [-EQ <float>] [-mxisvh]\n" );
    Abc_Print( -2, "\t           performs standard cell mapping of the current network\n" );
    Abc_Print( -2, "\t-F num   : the number of iterations of area flow [default = %d]\n", pPars->nIterFlow );
    Abc_Print( -2, "\t-A num   : the number of iterations of exact area [default = %d]\n", pPars->nIterArea );
    Abc_Print( -2, "\t-C num   : the maximum number of cuts at a node [default = %d]\n", pPars->nCutsMax );
    Abc_Print( -2, "\t-E float : sets epsilon used for tie-breaking [default = %f]\n", pPars->fEpsilon );
    Abc_Print( -2, "\t-Q float : area/delay preference ratio [default = %.2f (area-only)] \n", pPars->fADratio );
    Abc_Print( -2, "\t-m       : toggles using MUX matching [default = %s]\n", pPars->fUseMuxes? "yes": "no" );
    Abc_Print( -2, "\t-x       : toggles using XOR matching [default = %s]\n", pPars->fUseXors? "yes": "no" );
    Abc_Print( -2, "\t-i       : toggles assuming inverters are free [default = %s]\n", pPars->fFreeInvs? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggles sweep after mapping [default = %s]\n", fSweep? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPhaseMap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkChangePerform( Abc_Ntk_t * pNtk, int fVerbose );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int fVerbose = 0, c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkHasMapping(pNtk) )
    {
        Abc_Print( -1, "Cannot unmap the network that is not mapped.\n" );
        return 1;
    }
    Abc_NtkChangePerform( pNtk, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: phase_map [-vh]\n" );
    Abc_Print( -2, "\t        tries to replace each gate by its complement (area-only)\n" );
    Abc_Print( -2, "\t-v    : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandStochMap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtkRes = NULL, * pNtk = Abc_FrameReadNtk(pAbc);
    extern void Mio_IntallAndLibrary();    
    extern void Abc_NtkStochMap( int nSuppMax, int nIters, int TimeOut, int Seed, int fOverlap, int fVerbose, char * pScript, int nProcs );
    int c, nMaxSize = 14, nIters = 1, TimeOut = 0, Seed = 0, nProcs = 1, fOverlap = 0, fVerbose = 0; char * pScript;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NITSPovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nMaxSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMaxSize < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeOut < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nProcs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nProcs < 0 )
                goto usage;
            break;            
        case 'o':
            fOverlap ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Abc_CommandStochMap(): There is no AIG.\n" );
        return 0;
    }
    if ( Abc_NtkIsStrash(pNtk) ) 
    {
        extern Abc_Ntk_t * Abc_NtkDarAmap( Abc_Ntk_t * pNtk, Amap_Par_t * pPars );
        Amap_Par_t Pars, * pPars = &Pars;
        Amap_ManSetDefaultParams( pPars );
        Mio_IntallAndLibrary();
        pNtkRes = Abc_NtkDarAmap( pNtk, pPars );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "Mapping has failed.\n" );
            return 1;
        }
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
        pNtk = Abc_FrameReadNtk(pAbc);
    }
    if ( !Abc_NtkIsMappedLogic(pNtk) )
    {
        Abc_Print( -1, "Abc_CommandStochMap(): Expecting a mapped current newtork as input.\n" );
        return 0;
    }    
    if ( argc != globalUtilOptind + 1 )
    {
        printf( "Expecting a synthesis script in quotes on the command line (for example: \"&st; &dch; &if\").\n" );
        goto usage;
    }
    pScript = Abc_UtilStrsav( argv[globalUtilOptind] );
    Abc_NtkStochMap( nMaxSize, nIters, TimeOut, Seed, fOverlap, fVerbose, pScript, nProcs );
    ABC_FREE( pScript );
    if ( pNtkRes )
    {
        pNtk = Abc_FrameReadNtk(pAbc);
        pNtkRes = Abc_NtkStrash( pNtk, 1, 1, 0 );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "Strashing has failed.\n" );
            return 1;
        }
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: stochmap [-NITSP <num>] [-ovh] <script>\n" );
    Abc_Print( -2, "\t           performs stochastic mapping\n" );
    Abc_Print( -2, "\t-N <num> : the max support size of a partition [default = %d]\n",        nMaxSize );
    Abc_Print( -2, "\t-I <num> : the number of optimization iterations [default = %d]\n",      nIters  );
    Abc_Print( -2, "\t-T <num> : the timeout in seconds (0 = no timeout) [default = %d]\n",    TimeOut );
    Abc_Print( -2, "\t-S <num> : user-specified random seed (0 <= num <= 100) [default = %d]\n", Seed  );
    Abc_Print( -2, "\t-P <num> : the number of concurrent processes (1 <= num <= 100) [default = %d]\n", nProcs );
    Abc_Print( -2, "\t-o       : toggle using overlapping partitions [default = %s]\n",        fOverlap? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n",       fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t<script> : synthesis script to use for each partition\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandUnmap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkHasMapping(pNtk) )
    {
        Abc_Print( -1, "Cannot unmap the network that is not mapped.\n" );
        return 1;
    }

    // get the new network
    if ( !Abc_NtkMapToSop( pNtk ) )
    {
        Abc_Print( -1, "Unmapping has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: unmap [-h]\n" );
    Abc_Print( -2, "\t        replaces the library gates by the logic nodes represented using SOPs\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAttach( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsSopLogic(pNtk) )
    {
        Abc_Print( -1, "Can only attach gates if the nodes have SOP representations.\n" );
        return 1;
    }

    // get the new network
    if ( !Abc_NtkAttach( pNtk ) )
    {
        Abc_Print( -1, "Attaching gates has failed.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: attach [-h]\n" );
    Abc_Print( -2, "\t        replaces the SOP functions by the gates from the library\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSuperChoice( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    extern Abc_Ntk_t * Abc_NtkSuperChoice( Abc_Ntk_t * pNtk );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Superchoicing works only for the AIG representation (run \"strash\").\n" );
        return 1;
    }

    // get the new network
    pNtkRes = Abc_NtkSuperChoice( pNtk );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Superchoicing has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: superc [-h]\n" );
    Abc_Print( -2, "\t      performs superchoicing\n" );
    Abc_Print( -2, "\t      (accumulate: \"r file.blif; rsup; b; sc; f -ac; wb file_sc.blif\")\n" );
    Abc_Print( -2, "\t      (map without supergate library: \"r file_sc.blif; ft; map\")\n" );
    Abc_Print( -2, "\t-h  : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSuperChoiceLut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int nLutSize;
    int nCutSizeMax;
    int fVerbose;
    extern int Abc_NtkSuperChoiceLut( Abc_Ntk_t * pNtk, int nLutSize, int nCutSizeMax, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fVerbose = 1;
    nLutSize = 4;
    nCutSizeMax = 10;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KNh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nCutSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutSizeMax < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Superchoicing works only for the AIG representation (run \"strash\").\n" );
        return 1;
    }

    // convert the network into the SOP network
    pNtkRes = Abc_NtkToLogic( pNtk );

    // get the new network
    if ( !Abc_NtkSuperChoiceLut( pNtkRes, nLutSize, nCutSizeMax, fVerbose ) )
    {
        Abc_NtkDelete( pNtkRes );
        Abc_Print( -1, "Superchoicing has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: supercl [-K num] [-N num] [-vh]\n" );
    Abc_Print( -2, "\t        performs superchoicing for K-LUTs\n" );
    Abc_Print( -2, "\t        (accumulate: \"r file.blif; b; scl; f -ac; wb file_sc.blif\")\n" );
    Abc_Print( -2, "\t        (FPGA map: \"r file_sc.blif; ft; read_lut lutlibK; fpga\")\n" );
    Abc_Print( -2, "\t-K num : the number of LUT inputs [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-N num : the max size of the cut [default = %d]\n", nCutSizeMax );
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTimeScale( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkTimeScale( Abc_Ntk_t * pNtk, float Scale );
    Abc_Ntk_t * pNtk;
    float nTimeScale;
    int c, fVerbose;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nTimeScale = (float)0.01;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Th" ) ) != EOF )
    {
        switch ( c )
        {
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nTimeScale = atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeScale < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( pNtk->pManTime == NULL )
    {
        Abc_Print( -1, "Timing manager is not defined.\n" );
        return 1;
    }
    Abc_NtkTimeScale( pNtk, nTimeScale );
    return 0;

usage:
    Abc_Print( -2, "usage: timescale [-T float] [-vh]\n" );
    Abc_Print( -2, "\t           scales timing information of the current network\n" );
    Abc_Print( -2, "\t-T float : multiplicative factor [default = %f]\n", nTimeScale );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRewire( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t *Abc_ManRewire(Abc_Ntk_t *pNtk, Gia_Man_t *pExc, int nIters, float levelGrowRatio, int nExpands, int nGrowth, int nDivs, int nFaninMax, int nTimeOut, int nMode, int nMappedMode, int nDist, int fDch, int fTiming, int nSeed, int fCheck, int fVerbose);
    Abc_Ntk_t *pNtk, *pTemp;
    Gia_Man_t *pExc = NULL;
    FILE *pFile = NULL;
    int c, nIters = 100000, nExpands = 128, nGrowth = 4, nDivs = -1, nFaninMax = 8, nSeed = 1, nTimeOut = 0, nVerbose = 1, nMode = 0, nMappedMode = 0, nDist = 0, fCheck = 0, fDch = 1, fTiming = 0;
    float nLevelGrowRatio = 0;
    Extra_UtilGetoptReset();

    pNtk = Abc_FrameReadNtk(pAbc);

    while ( ( c = Extra_UtilGetopt( argc, argv, "IEGDFSTMALRCVdtch" ) ) != EOF ) {
        switch ( c ) {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nExpands = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nGrowth = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nDivs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nFaninMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nMode = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nMappedMode = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nDist = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a positive number.\n" );
                goto usage;
            }
            nLevelGrowRatio = atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'C':
            pFile = fopen( argv[globalUtilOptind], "rb" );
            if ( pFile == NULL )
            {
                Abc_Print( -1, "Cannot open input file \"%s\".\n", argv[globalUtilOptind] );
                return 1;
            }
            fclose( pFile );
            pExc = Gia_AigerRead( argv[globalUtilOptind], 0, 0, 0 );
            if ( pExc == NULL )
            {
                Abc_Print( -1, "Reading AIGER has failed.\n" );
                return 1;
            }
            globalUtilOptind++;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'c':
            fCheck ^= 1;
            break;
        case 'd':
            fDch ^= 1;
            break;
        case 't':
            fTiming ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( argc > globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( nMode == 0 && !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Rewiring operates only on specific network representations. Use \"strash\" to apply it to an AIG, or add the \"-M 1\" flag to enable it for a mapped network.\n" );
        return 1;
    }
    if ( nMode == 1 && Abc_FrameReadLibGen2() == NULL )
    {
        Abc_Print( -1, "Library is not available.\n" );
        return 1;
    }

    pTemp = Abc_ManRewire( pNtk, pExc, nIters, nLevelGrowRatio, nExpands, nGrowth, nDivs, nFaninMax, nTimeOut, nMode, nMappedMode, nDist, fDch, fTiming, nSeed, fCheck, nVerbose );
    if ( pExc )
        Gia_ManStop( pExc );
    Abc_FrameReplaceCurrentNetwork( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: rewire [-IEGDFLRMASTV <num>]\n" );
    Abc_Print( -2, "\t-I <num>  :  the number of iterations [default = %d]\n",                                  nIters );
    Abc_Print( -2, "\t-E <num>  :  the number of fanins to add to all nodes [default = %d]\n",                  nExpands );
    Abc_Print( -2, "\t-G <num>  :  the number of fanins to add to one node [default = %d]\n",                   nGrowth );
    Abc_Print( -2, "\t-D <num>  :  the number of shared divisors to extract (-1: unlimited) [default = %d]\n",  nDivs );
    Abc_Print( -2, "\t-F <num>  :  the limit on the fanin count at a node [default = %d]\n",                    nFaninMax);
    Abc_Print( -2, "\t-L <num>  :  localization distances (0: unlimited) [default = %d]\n",                     nDist);
    Abc_Print( -2, "\t-R <num>  :  level constraint (0: unlimited, 1: preserve level) [default = %g]\n",        nLevelGrowRatio);
    Abc_Print( -2, "\t-M <num>  :  optimization target [default = %s]\n",                                       nMode ? "mapped" : "AIG" );
    Abc_Print( -2, "\t-A <num>  :  mapper (0: amap, 1: &nf, 2: &simap) (experimental) [default = %d]\n",        nMappedMode );
    Abc_Print( -2, "\t-C <file> :  AIGER specifying external cares\n");
    Abc_Print( -2, "\t-S <num>  :  the random seed (0: random, >= 1: user defined) [default = %d]\n",           nSeed );
    Abc_Print( -2, "\t-T <num>  :  the timeout in seconds (0: unlimited) [default = %d]\n",                     nTimeOut );
    Abc_Print( -2, "\t-V <num>  :  the verbosity level [default = %d]\n",                                       nVerbose );
    Abc_Print( -2, "\t-c        :  check the equivalence [default = %s]\n",                                     fCheck ? "yes" : "no" );
    Abc_Print( -2, "\t-d        :  toggle perform \"dch\" before mapping [default = %s]\n",                     fDch ? "yes" : "no" );
    Abc_Print( -2, "\t-t        :  toggle timing-driven rewiring [default = %s]\n",                             fTiming ? "yes" : "no" );
    Abc_Print( -2, "\t-h        :  prints the command usage\n" );
    Abc_Print( -2, "\n\tThis command was contributed by Jiun-Hao Chen from National Taiwan University.\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
#if 0
int Abc_CommandFpga( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char Buffer[100];
    char LutSize[100];
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fRecovery;
    int fSwitching;
    int fLatchPaths;
    int fVerbose;
    int nLutSize;
    float DelayTarget;

    extern Abc_Ntk_t * Abc_NtkFpga( Abc_Ntk_t * pNtk, float DelayTarget, int fRecovery, int fSwitching, int fLatchPaths, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fRecovery   = 1;
    fSwitching  = 0;
    fLatchPaths = 0;
    fVerbose    = 0;
    DelayTarget =-1;
    nLutSize    =-1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "aplvhDK" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fRecovery ^= 1;
            break;
        case 'p':
            fSwitching ^= 1;
            break;
        case 'l':
            fLatchPaths ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            DelayTarget = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( DelayTarget <= 0.0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    // create the new LUT library
    if ( nLutSize >= 3 && nLutSize <= 10 )
        Fpga_SetSimpleLutLib( nLutSize );
/*
    else
    {
        Abc_Print( -1, "Cannot perform FPGA mapping with LUT size %d.\n", nLutSize );
        return 1;
    }
*/
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        // strash and balance the network
        pNtk = Abc_NtkStrash( pNtk, 0, 0, 0 );
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Strashing before FPGA mapping has failed.\n" );
            return 1;
        }
        pNtk = Abc_NtkBalance( pNtkRes = pNtk, 0, 0, 1 );
        Abc_NtkDelete( pNtkRes );
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Balancing before FPGA mapping has failed.\n" );
            return 1;
        }
        Abc_Print( 1, "The network was strashed and balanced before FPGA mapping.\n" );
        // get the new network
        pNtkRes = Abc_NtkFpga( pNtk, DelayTarget, fRecovery, fSwitching, fLatchPaths, fVerbose );
        if ( pNtkRes == NULL )
        {
            Abc_NtkDelete( pNtk );
            Abc_Print( -1, "FPGA mapping has failed.\n" );
            return 1;
        }
        Abc_NtkDelete( pNtk );
    }
    else
    {
        // get the new network
        pNtkRes = Abc_NtkFpga( pNtk, DelayTarget, fRecovery, fSwitching, fLatchPaths, fVerbose );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "FPGA mapping has failed.\n" );
            return 1;
        }
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    if ( DelayTarget == -1 )
        sprintf(Buffer, "best possible" );
    else
        sprintf(Buffer, "%.2f", DelayTarget );
    if ( nLutSize == -1 )
        sprintf(LutSize, "library" );
    else
        sprintf(LutSize, "%d", nLutSize );
    Abc_Print( -2, "usage: fpga [-D float] [-K num] [-aplvh]\n" );
    Abc_Print( -2, "\t           performs FPGA mapping of the current network\n" );
    Abc_Print( -2, "\t-a       : toggles area recovery [default = %s]\n", fRecovery? "yes": "no" );
    Abc_Print( -2, "\t-p       : optimizes power by minimizing switching activity [default = %s]\n", fSwitching? "yes": "no" );
    Abc_Print( -2, "\t-l       : optimizes latch paths for delay, other paths for area [default = %s]\n", fLatchPaths? "yes": "no" );
    Abc_Print( -2, "\t-D float : sets the required time for the mapping [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-K num   : the number of LUT inputs (2 < num < 11) [default = %s]%s\n", LutSize, (nLutSize == -1 ? " (type \"print_lut\")" : "") );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFpgaFast( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char Buffer[100];
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fRecovery;
    int fVerbose;
    int nLutSize;
    float DelayTarget;

    extern Abc_Ntk_t * Abc_NtkFpgaFast( Abc_Ntk_t * pNtk, int nLutSize, int fRecovery, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fRecovery   = 1;
    fVerbose    = 0;
    DelayTarget =-1;
    nLutSize    = 5;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "avhDK" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fRecovery ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            DelayTarget = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( DelayTarget <= 0.0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        // strash and balance the network
        pNtk = Abc_NtkStrash( pNtk, 0, 0, 0 );
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Strashing before FPGA mapping has failed.\n" );
            return 1;
        }
        pNtk = Abc_NtkBalance( pNtkRes = pNtk, 0, 0, 1 );
        Abc_NtkDelete( pNtkRes );
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Balancing before FPGA mapping has failed.\n" );
            return 1;
        }
        Abc_Print( 1, "The network was strashed and balanced before FPGA mapping.\n" );
        // get the new network
        pNtkRes = Abc_NtkFpgaFast( pNtk, nLutSize, fRecovery, fVerbose );
        if ( pNtkRes == NULL )
        {
            Abc_NtkDelete( pNtk );
            Abc_Print( -1, "FPGA mapping has failed.\n" );
            return 1;
        }
        Abc_NtkDelete( pNtk );
    }
    else
    {
        // get the new network
        pNtkRes = Abc_NtkFpgaFast( pNtk, nLutSize, fRecovery, fVerbose );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "FPGA mapping has failed.\n" );
            return 1;
        }
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    if ( DelayTarget == -1 )
        sprintf(Buffer, "not used" );
    else
        sprintf(Buffer, "%.2f", DelayTarget );
    Abc_Print( -2, "usage: ffpga [-K num] [-avh]\n" );
    Abc_Print( -2, "\t           performs fast FPGA mapping of the current network\n" );
    Abc_Print( -2, "\t-a       : toggles area recovery [default = %s]\n", fRecovery? "yes": "no" );
//    Abc_Print( -2, "\t-D float : sets the required time for the mapping [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-K num   : the number of LUT inputs (2 < num < 32) [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}
#endif

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandIf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkIf( Abc_Ntk_t * pNtk, If_Par_t * pPars );
    char Buffer[100], LutSize[100];
    Abc_Ntk_t * pNtk, * pNtkRes;
    If_Par_t Pars, * pPars = &Pars;
    int c;
    pNtk = Abc_FrameReadNtk(pAbc);
    If_ManSetDefaultPars( pPars );
    pPars->pLutLib = (If_LibLut_t *)Abc_FrameReadLibLut();
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCFAGRNTXYZUDEWSJqalepmrsdbgxyzuoiktncfvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 0 )
                goto usage;
            // if the LUT size is specified, disable library
            pPars->pLutLib = NULL;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutsMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nFlowIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFlowIters < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nAreaIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nAreaIters < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by a positive integer no less than 3.\n" );
                goto usage;
            }
            pPars->nGateSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nGateSize < 2 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nRelaxRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRelaxRatio < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer no less than 3.\n" );
                goto usage;
            }
            pPars->nNonDecLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNonDecLimit < 2 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by a positive integer 0,1,or 2.\n" );
                goto usage;
            }
            pPars->nStructType = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nStructType < 0 || pPars->nStructType > 2 )
                goto usage;
            break;
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by a positive integer 0,1,or 2.\n" );
                goto usage;
            }
            pPars->nAndDelay = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nAndArea < 0 )
                goto usage;
            break;
        case 'Y':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Y\" should be followed by a positive integer 0,1,or 2.\n" );
                goto usage;
            }
            pPars->nAndArea = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nAndDelay < 0 )
                goto usage;
            break;
        case 'U':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-U\" should be followed by a positive integer 3, 4, 5, or 6.\n" );
                goto usage;
            }
            pPars->nLutDecSize = atoi(argv[globalUtilOptind]);
            pPars->fUserLut2D = 1;
            globalUtilOptind++;
            if ( pPars->nLutDecSize < 3 || pPars->nLutDecSize > 6 )
                goto usage;
            break;
        case 'Z':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Z\" should be followed by a positive integer 3, 4, 5, or 6.\n" );
                goto usage;
            }
            pPars->nLutDecSize = atoi(argv[globalUtilOptind]);
            pPars->fUserLutDec = 1;
            globalUtilOptind++;
            if ( pPars->nLutDecSize < 3 || pPars->nLutDecSize > 6 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->DelayTarget = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelayTarget <= 0.0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->Epsilon = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->Epsilon < 0.0 || pPars->Epsilon > 1.0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->WireDelay = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->WireDelay < 0.0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by string.\n" );
                goto usage;
            }
            pPars->pLutStruct = argv[globalUtilOptind];
            globalUtilOptind++;
            if ( strlen(pPars->pLutStruct) != 2 && strlen(pPars->pLutStruct) != 3 )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a 2- or 3-char string (e.g. \"44\" or \"555\").\n" );
                goto usage;
            }
            break;
        case 'J':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-J\" should be followed by string.\n" );
                goto usage;
            }
            pPars->pLutStruct = argv[globalUtilOptind];
            pPars->fEnableStructN = 1;
            globalUtilOptind++;
            if ( strlen(pPars->pLutStruct) != 2 && strlen(pPars->pLutStruct) != 3 )
            {
                Abc_Print( -1, "Command line switch \"-J\" should be followed by a 2-char string (e.g. \"44\" or \"66\" \").\n" );
                goto usage;
            }
            break;
        case 'q':
            pPars->fPreprocess ^= 1;
            break;
        case 'a':
            pPars->fArea ^= 1;
            break;
        case 'r':
            pPars->fExpRed ^= 1;
            break;
        //case 'f':
        //    pPars->fFancy ^= 1;
        //    break;
        case 'l':
            pPars->fLatchPaths ^= 1;
            break;
        case 'e':
            pPars->fEdge ^= 1;
            break;
        case 'p':
            pPars->fPower ^= 1;
            break;
        case 'm':
            pPars->fCutMin ^= 1;
            break;
        case 's':
            pPars->fDelayOptLut ^= 1;
            break;
        case 'd':
            pPars->fBidec ^= 1;
            break;
        case 'b':
            pPars->fUseBat ^= 1;
            break;
        case 'g':
            pPars->fDelayOpt ^= 1;
            break;
        case 'x':
            pPars->fDsdBalance ^= 1;
            break;
        case 'y':
            pPars->fUserRecLib ^= 1;
            break;
        case 'u':
            pPars->fUserSesLib ^= 1;
            break;
        case 'o':
            pPars->fUseBuffs ^= 1;
            break;
        //case 'j':
        //    pPars->fEnableCheck07 ^= 1;
        //    break;
        case 'i':
            pPars->fUseCofVars ^= 1;
            break;
        case 'k':
            pPars->fUseDsdTune ^= 1;
            break;
        case 't':
            pPars->fDoAverage ^= 1;
            break;
        case 'n':
            pPars->fUseDsd ^= 1;
            break;
        case 'c':
            pPars->fUseTtPerm ^= 1;
            break;
        case 'f':
            pPars->fDumpFile ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'z':
            pPars->fDeriveLuts ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( pPars->nLutSize == -1 )
    {
        if ( pPars->pLutLib == NULL )
        {
            Abc_Print( -1, "The LUT library is not given.\n" );
            return 1;
        }
        pPars->nLutSize = pPars->pLutLib->LutMax;
    }

    if ( pPars->nLutSize < 2 || pPars->nLutSize > IF_MAX_LUTSIZE )
    {
        Abc_Print( -1, "Incorrect LUT size (%d).\n", pPars->nLutSize );
        return 1;
    }

    if ( pPars->nCutsMax < 1 || pPars->nCutsMax >= (1<<12) )
    {
        Abc_Print( -1, "Incorrect number of cuts.\n" );
        return 1;
    }

    // enable truth table computation if choices are selected
    if ( (c = Abc_NtkGetChoiceNum( pNtk )) )
    {
//        if ( !Abc_FrameReadFlag("silentmode") )
//            Abc_Print( 0, "Performing LUT mapping with %d choices.\n", c );
        pPars->fExpRed = 0;
    }

    if ( pPars->fUseBat )
    {
        if ( pPars->nLutSize < 4 || pPars->nLutSize > 6 )
        {
            Abc_Print( -1, "This feature only works for {4,5,6}-LUTs.\n" );
            return 1;
        }
        pPars->fCutMin = 1;
    }

    if ( pPars->fEnableCheck07 + pPars->fUseCofVars + pPars->fUseDsdTune + (pPars->pLutStruct != NULL) > 1 )
    {
        Abc_Print( -1, "Only one additional check can be performed at the same time.\n" );
        return 1;
    }
    if ( pPars->fEnableCheck07 )
    {
        if ( pPars->nLutSize > 9 )
        {
            Abc_Print( -1, "This feature only works for up to 9-input LUTs.\n" );
            return 1;
        }
        pPars->pFuncCell = If_CutPerformCheckJ;
        pPars->fCutMin = 1;
    }
    if ( pPars->fUseCofVars )
    {
        if ( !(pPars->nLutSize & 1) )
        {
            Abc_Print( -1, "This feature only works for odd-sized LUTs.\n" );
            return 1;
        }
        pPars->fCutMin = 1;
    }
    if ( pPars->fUseDsdTune )
    {
        If_DsdMan_t * pDsdMan = (If_DsdMan_t *)Abc_FrameReadManDsd();
        if ( pDsdMan == NULL )
        {
            Abc_Print( -1, "DSD manager is not available.\n" );
            return 1;
        }
        if ( pPars->nLutSize > If_DsdManVarNum(pDsdMan) )
        {
            Abc_Print( -1, "LUT size (%d) is more than the number of variables in the DSD manager (%d).\n", pPars->nLutSize, If_DsdManVarNum(pDsdMan) );
            return 1;
        }
        if ( pPars->fDeriveLuts && If_DsdManGetCellStr(pDsdMan) == NULL )
        {
            Abc_Print( -1, "DSD manager is not matched with any particular cell.\n" );
            return 1;
        }
        pPars->fCutMin = 1;
        pPars->fUseDsd = 1;
        If_DsdManSetNewAsUseless( pDsdMan );
    }
    if ( pPars->pLutStruct )
    {
        if ( pPars->fDsdBalance )
        {
            Abc_Print( -1, "Incompatible options (-S and -x).\n" );
            return 1;
        }
        if ( pPars->nLutSize < 6 || pPars->nLutSize > 16 )
        {
            Abc_Print( -1, "This feature only works for [6;16]-LUTs.\n" );
            return 1;
        }
        if ( pPars->fEnableStructN )
        {
            pPars->pFuncCell = pPars->fDelayOptLut ? NULL : If_CutPerformCheckXX;
        }
        else
        {
            pPars->pFuncCell = pPars->fDelayOptLut ? NULL : If_CutPerformCheck16;
        }
        pPars->fCutMin = 1;
        pPars->nLutDecSize = pPars->pLutStruct[0] - '0';
    }
    else
    {
        pPars->fDeriveLuts = 0;
    }

    if ( pPars->fUserLutDec || pPars->fUserLut2D )
    {
        if ( pPars->nLutDecSize == 0 )
        {
            Abc_Print( -1, "LUT decomposition size (%d) must be set.\n", pPars->nLutDecSize );
            return 1;
        }
        if ( pPars->nLutDecSize >= pPars->nLutSize )
        {
            Abc_Print( -1, "LUT size (%d) must be greater than the LUT decomposition size (%d).\n", pPars->nLutSize, pPars->nLutDecSize );
            return 1;
        }
        if ( pPars->nLutSize < 4 || pPars->nLutSize > 11 )
        {
            Abc_Print( -1, "This feature only works for [4;11]-LUTs.\n" );
            return 1;
        }
    }

    // enable truth table computation if cut minimization is selected
    if ( pPars->fCutMin )
    {
        pPars->fTruth = 1;
        pPars->fExpRed = 0;
    }
    // modify the subgraph recording
    if ( pPars->fUserRecLib || pPars->fUserSesLib )
    {
        pPars->fTruth      =  1;
        pPars->fCutMin     =  1;
        pPars->fExpRed     =  0;
        pPars->fUsePerm    =  1;
        pPars->pLutLib     =  NULL;
    }
    // modify for delay optimization
    if ( pPars->fDelayOpt || pPars->fDsdBalance || pPars->fDelayOptLut || pPars->fUserLutDec || pPars->fUserLut2D )
    {
        pPars->fTruth      =  1;
        pPars->fCutMin     =  1;
        pPars->fExpRed     =  0;
        pPars->fUseDsd     =  pPars->fDsdBalance || pPars->fDelayOptLut;
        pPars->pLutLib     =  NULL;
    }
    // modify for delay optimization
    if ( pPars->nGateSize > 0 )
    {
        pPars->fTruth      =  1;
        pPars->fCutMin     =  1;
        pPars->fExpRed     =  0;
        pPars->fUsePerm    =  1;
        pPars->pLutLib     =  NULL;
        pPars->nLutSize    =  pPars->nGateSize;
    }

    if ( pPars->fUseDsd || pPars->fUseTtPerm )
    {
        pPars->fTruth      =  1;
        pPars->fCutMin     =  1;
        pPars->fExpRed     =  0;
    }

    if ( pPars->fUseDsd )
    {
        int LutSize = (pPars->pLutStruct && pPars->pLutStruct[2] == 0)? pPars->pLutStruct[0] - '0' : 0;
        If_DsdMan_t * p = (If_DsdMan_t *)Abc_FrameReadManDsd();
        if ( pPars->pLutStruct && pPars->pLutStruct[2] != 0 )
        {
            printf( "DSD only works for LUT structures XY.\n" );
            return 0;
        }
        if ( p && pPars->nLutSize > If_DsdManVarNum(p) )
        {
            printf( "DSD manager has incompatible number of variables.\n" );
            return 0;
        }
        if ( p && LutSize != If_DsdManLutSize(p) && !pPars->fDsdBalance )
        {
            printf( "DSD manager has different LUT size.\n" );
            return 0;
        }
        if ( p == NULL )
        {
            if ( LutSize > DAU_MAX_VAR || pPars->nLutSize > DAU_MAX_VAR )
            {
                printf( "Size of required DSD manager (%d) exceeds the precompiled limit (%d) (change parameter DAU_MAX_VAR).\n", LutSize, DAU_MAX_VAR );
                return 0;
            }
            Abc_FrameSetManDsd( If_DsdManAlloc(pPars->nLutSize, LutSize) );
        }
    }

    if ( pPars->fUserRecLib )
    {
        if ( !Abc_NtkRecIsRunning3() )
        {
            printf( "LMS manager is not running (use \"rec_start3\").\n" );
            return 0;
        }
        if ( Abc_NtkRecInputNum3() != pPars->nLutSize )
        {
            printf( "The number of library inputs (%d) is different from the K parameters (%d).\n", Abc_NtkRecInputNum3(), pPars->nLutSize );
            return 0;
        }
    }

    if ( pPars->fUserSesLib )
    {
        if ( !Abc_ExactIsRunning() )
        {
            printf( "BMS manager is not running (use \"bms_start\").\n" );
            return 0;
        }
        if ( Abc_ExactInputNum() < pPars->nLutSize )
        {
            printf( "The number of library inputs (%d) is smaller than the K parameters (%d).\n", Abc_ExactInputNum(), pPars->nLutSize );
            return 0;
        }
    }

    // complain if truth tables are requested but the cut size is too large
    if ( pPars->fTruth && pPars->nLutSize > IF_MAX_FUNC_LUTSIZE )
    {
        Abc_Print( -1, "Truth tables cannot be computed for LUT larger than %d inputs.\n", IF_MAX_FUNC_LUTSIZE );
        return 1;
    }

    // disable cut-expansion if edge-based heuristics are selected
//    if ( pPars->fEdge )
//        pPars->fExpRed = 0;

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        // strash and balance the network
        pNtk = Abc_NtkStrash( pNtk, 0, 0, 0 );
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Strashing before FPGA mapping has failed.\n" );
            return 1;
        }
        pNtk = Abc_NtkBalance( pNtkRes = pNtk, 0, 0, 1 );
        Abc_NtkDelete( pNtkRes );
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Balancing before FPGA mapping has failed.\n" );
            return 1;
        }
        if ( !Abc_FrameReadFlag("silentmode") )
            Abc_Print( 1, "The network was strashed and balanced before FPGA mapping.\n" );
        // get the new network
        pNtkRes = Abc_NtkIf( pNtk, pPars );
        if ( pNtkRes == NULL )
        {
            Abc_NtkDelete( pNtk );
            Abc_Print( -1, "FPGA mapping has failed.\n" );
            return 0;
        }
        Abc_NtkDelete( pNtk );
    }
    else
    {
        // get the new network
        pNtkRes = Abc_NtkIf( pNtk, pPars );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "FPGA mapping has failed.\n" );
            return 0;
        }
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    if ( pPars->DelayTarget == -1 )
        sprintf(Buffer, "best possible" );
    else
        sprintf(Buffer, "%.2f", pPars->DelayTarget );
    if ( pPars->nLutSize == -1 )
        sprintf(LutSize, "library" );
    else
        sprintf(LutSize, "%d", pPars->nLutSize );
    Abc_Print( -2, "usage: if [-KCFAGRNTXYZMU num] [-DEW float] [-SJ str] [-qarlepmsdbgxyuoiktnczfvh]\n" );
    Abc_Print( -2, "\t           performs FPGA technology mapping of the network\n" );
    Abc_Print( -2, "\t-K num   : the number of LUT inputs (2 < num < %d) [default = %s]\n", IF_MAX_LUTSIZE+1, LutSize );
    Abc_Print( -2, "\t-C num   : the max number of priority cuts (0 < num < 2^12) [default = %d]\n", pPars->nCutsMax );
    Abc_Print( -2, "\t-F num   : the number of area flow recovery iterations (num >= 0) [default = %d]\n", pPars->nFlowIters );
    Abc_Print( -2, "\t-A num   : the number of exact area recovery iterations (num >= 0) [default = %d]\n", pPars->nAreaIters );
    Abc_Print( -2, "\t-G num   : the max AND/OR gate size for mapping (0 = unused) [default = %d]\n", pPars->nGateSize );
    Abc_Print( -2, "\t-R num   : the delay relaxation ratio (num >= 0) [default = %d]\n", pPars->nRelaxRatio );
    Abc_Print( -2, "\t-N num   : the max size of non-decomposable nodes [default = unused]\n", pPars->nNonDecLimit );
    Abc_Print( -2, "\t-T num   : the type of LUT structures [default = any]\n" );
    Abc_Print( -2, "\t-X num   : delay of AND-gate in LUT library units [default = %d]\n", pPars->nAndDelay );
    Abc_Print( -2, "\t-Y num   : area of AND-gate in LUT library units [default = %d]\n", pPars->nAndArea );
    Abc_Print( -2, "\t-U num   : the number of LUT inputs for delay-driven LUT decomposition [default = not used]\n" );
    Abc_Print( -2, "\t-Z num   : the number of LUT inputs for delay-driven LUT decomposition [default = not used]\n" );
    Abc_Print( -2, "\t-D float : sets the delay constraint for the mapping [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-E float : sets epsilon used for tie-breaking [default = %f]\n", pPars->Epsilon );
    Abc_Print( -2, "\t-W float : sets wire delay between adjects LUTs [default = %f]\n", pPars->WireDelay );
    Abc_Print( -2, "\t-S str   : string representing the LUT structure [default = %s]\n", pPars->pLutStruct ? pPars->pLutStruct : "not used" );
    Abc_Print( -2, "\t-J str   : string representing the LUT structure (new method) [default = %s]\n", pPars->pLutStruct ? pPars->pLutStruct : "not used" );
    Abc_Print( -2, "\t-q       : toggles preprocessing using several starting points [default = %s]\n", pPars->fPreprocess? "yes": "no" );
    Abc_Print( -2, "\t-a       : toggles area-oriented mapping [default = %s]\n", pPars->fArea? "yes": "no" );
    Abc_Print( -2, "\t-r       : enables expansion/reduction of the best cuts [default = %s]\n", pPars->fExpRed? "yes": "no" );
    Abc_Print( -2, "\t-l       : optimizes latch paths for delay, other paths for area [default = %s]\n", pPars->fLatchPaths? "yes": "no" );
    Abc_Print( -2, "\t-e       : uses edge-based cut selection heuristics [default = %s]\n", pPars->fEdge? "yes": "no" );
    Abc_Print( -2, "\t-p       : uses power-aware cut selection heuristics [default = %s]\n", pPars->fPower? "yes": "no" );
    Abc_Print( -2, "\t-m       : enables cut minimization by removing vacuous variables [default = %s]\n", pPars->fCutMin? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggles delay-oriented mapping used with -S <NN> [default = %s]\n", pPars->fDelayOptLut? "yes": "no" );
    Abc_Print( -2, "\t-d       : toggles deriving local AIGs using bi-decomposition [default = %s]\n", pPars->fBidec? "yes": "no" );
    Abc_Print( -2, "\t-b       : toggles the use of one special feature [default = %s]\n", pPars->fUseBat? "yes": "no" );
    Abc_Print( -2, "\t-g       : toggles delay optimization by SOP balancing [default = %s]\n", pPars->fDelayOpt? "yes": "no" );
    Abc_Print( -2, "\t-x       : toggles delay optimization by DSD balancing [default = %s]\n", pPars->fDsdBalance? "yes": "no" );
    Abc_Print( -2, "\t-y       : toggles delay optimization with recorded library [default = %s]\n", pPars->fUserRecLib? "yes": "no" );
    Abc_Print( -2, "\t-u       : toggles delay optimization with SAT-based library [default = %s]\n", pPars->fUserSesLib? "yes": "no" );
    Abc_Print( -2, "\t-o       : toggles using buffers to decouple combinational outputs [default = %s]\n", pPars->fUseBuffs? "yes": "no" );
    //Abc_Print( -2, "\t-j       : toggles enabling additional check [default = %s]\n", pPars->fEnableCheck07? "yes": "no" );
    Abc_Print( -2, "\t-i       : toggles using cofactoring variables [default = %s]\n", pPars->fUseCofVars? "yes": "no" );
    Abc_Print( -2, "\t-k       : toggles matching based on precomputed DSD manager [default = %s]\n", pPars->fUseDsdTune? "yes": "no" );
    Abc_Print( -2, "\t-t       : toggles optimizing average rather than maximum level [default = %s]\n", pPars->fDoAverage? "yes": "no" );
    Abc_Print( -2, "\t-n       : toggles computing DSDs of the cut functions [default = %s]\n", pPars->fUseDsd? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggles computing truth tables in a new way [default = %s]\n", pPars->fUseTtPerm? "yes": "no" );
    Abc_Print( -2, "\t-z       : toggles deriving LUTs when mapping into LUT structures [default = %s]\n", pPars->fDeriveLuts? "yes": "no" );
    Abc_Print( -2, "\t-f       : toggles dumping truth tables into a binary file [default = %s]\n", pPars->fDumpFile? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandIfif( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkPerformIfif( Abc_Ntk_t * pNtk, Ifif_Par_t * pPars );
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Ifif_Par_t Pars, * pPars = &Pars;
    int c, fError;

    pPars->nLutSize     =  -1;    // the LUT size
    pPars->pLutLib      = (If_LibLut_t *)Abc_FrameReadLibLut();       // the LUT library
    pPars->DelayWire    = (float)0.5;    // wire delay
    pPars->nDegree      =   0;    // structure degree
    pPars->fCascade     =   0;    // cascade
    pPars->fVerbose     =   0;    // verbose
    pPars->fVeryVerbose =   0;    // verbose

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "DNcvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->DelayWire = atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelayWire < 0.0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->nDegree = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nDegree < 0 )
                goto usage;
            break;
        case 'c':
            pPars->fCascade ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "Need mapped network.\n" );
        return 1;
    }
    if ( pPars->pLutLib == NULL )
    {
        Abc_Print( -1, "LUT library is not given.\n" );
        return 1;
    }

    pPars->nLutSize = Abc_NtkGetFaninMax( pNtk );
    if ( pPars->nLutSize > pPars->pLutLib->LutMax )
    {
        Abc_Print( -1, "The max node size (%d) exceeds the LUT size (%d).\n", pPars->nLutSize, pPars->pLutLib->LutMax );
        return 1;
    }
    if ( pPars->nLutSize < pPars->pLutLib->LutMax )
        Abc_Print( 0, "Node size (%d) is less than LUT size (%d).\n", pPars->nLutSize, pPars->pLutLib->LutMax );
    // check delay information
    fError = 0;
    for ( c = 0; c < pPars->pLutLib->LutMax; c++ )
    {
        pPars->pLutDelays[c] = ( pPars->pLutLib->fVarPinDelays ? pPars->pLutLib->pLutDelays[pPars->pLutLib->LutMax][c] : pPars->pLutLib->pLutDelays[pPars->pLutLib->LutMax][0] );
        if ( pPars->DelayWire >= pPars->pLutDelays[c] )
        {
            fError = 1;
            printf(" Wire delay (%.2f) exceeds pin+wire delay (%.2f) for pin %d in the LUT library.\n", pPars->DelayWire, pPars->pLutDelays[c], c );
        }
    }
    if ( fError )
        return 1;

    // call the mapper
    Abc_NtkPerformIfif( pNtk, pPars );
    return 0;

usage:
    Abc_Print( -2, "usage: ifif [-DNcvwh]\n" );
    Abc_Print( -2, "\t           technology mapper into N-node K-LUT structures\n" );
    Abc_Print( -2, "\t           (takes a LUT network and maps it into a delay-optimal network\n" );
    Abc_Print( -2, "\t            of N-node K-LUT structures using the current LUT library)\n" );
    Abc_Print( -2, "\t-D float : wire delay (should be less than the LUT delay) [default = %.2f]\n", pPars->DelayWire );
    Abc_Print( -2, "\t-N num   : degree of the LUT structure [default = %d]\n", pPars->nDegree );
    Abc_Print( -2, "\t-c       : toggles using LUT cascade vs LUT cluster [default = %s]\n", pPars->fCascade? "cascade": "cluster" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles very verbose output [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDsdSave( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * FileName;
    char ** pArgvNew;
    int nArgcNew;
    int c, fSecond = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "bh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'b':
            fSecond ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    // get the input file name
    FileName = (nArgcNew == 1) ? pArgvNew[0] : NULL;
    if ( fSecond )
    {
        if ( !Abc_FrameReadManDsd2() )
        {
            Abc_Print( -1, "The DSD manager is not started.\n" );
            return 1;
        }
        If_DsdManSave( (If_DsdMan_t *)Abc_FrameReadManDsd2(), FileName );
    }
    else
    {
        if ( !Abc_FrameReadManDsd() )
        {
            Abc_Print( -1, "The DSD manager is not started.\n" );
            return 1;
        }
        If_DsdManSave( (If_DsdMan_t *)Abc_FrameReadManDsd(), FileName );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: dsd_save [-bh] <file>\n" );
    Abc_Print( -2, "\t         saves DSD manager into a file\n");
    Abc_Print( -2, "\t-b     : toggles processing second manager [default = %s]\n", fSecond? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : (optional) file name to write\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDsdLoad( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * FileName, * pTemp;
    char ** pArgvNew;
    int c, nArgcNew, fSecond = 0;
    FILE * pFile;
    If_DsdMan_t * pDsdMan;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "bh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'b':
            fSecond ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    // get the input file name
    FileName = pArgvNew[0];
    // fix the wrong symbol
    for ( pTemp = FileName; *pTemp; pTemp++ )
        if ( *pTemp == '>' )
            *pTemp = '\\';
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", NULL, NULL, NULL, NULL )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );
    if ( fSecond )
    {
        Abc_FrameSetManDsd2( NULL );
        pDsdMan = If_DsdManLoad(FileName);
        if ( pDsdMan == NULL )
            return 1;
        Abc_FrameSetManDsd2( pDsdMan );
    }
    else
    {
        Abc_FrameSetManDsd( NULL );
        pDsdMan = If_DsdManLoad(FileName);
        if ( pDsdMan == NULL )
            return 1;
        Abc_FrameSetManDsd( pDsdMan );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: dsd_load [-bh] <file>\n" );
    Abc_Print( -2, "\t         loads DSD manager from file\n");
    Abc_Print( -2, "\t-b     : toggles processing second manager [default = %s]\n", fSecond? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file name to read\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDsdFree( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fSecond = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "bh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'b':
            fSecond ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( fSecond )
    {
        if ( !Abc_FrameReadManDsd2() )
        {
            Abc_Print( -1, "The DSD manager is not started.\n" );
            return 0;
        }
        Abc_FrameSetManDsd2( NULL );
    }
    else
    {
        if ( !Abc_FrameReadManDsd() )
        {
            Abc_Print( -1, "The DSD manager is not started.\n" );
            return 0;
        }
        Abc_FrameSetManDsd( NULL );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: dsd_free [-bh]\n" );
    Abc_Print( -2, "\t         deletes DSD manager\n" );
    Abc_Print( -2, "\t-b     : toggles processing second manager [default = %s]\n", fSecond? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDsdPs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, Number = 0, Support = 0, fOccurs = 0, fTtDump = 0, fSecond = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NSotbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a floating point number.\n" );
                goto usage;
            }
            Number = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Number < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a floating point number.\n" );
                goto usage;
            }
            Support = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Support < 0 )
                goto usage;
            break;
        case 'o':
            fOccurs ^= 1;
            break;
        case 't':
            fTtDump ^= 1;
            break;
        case 'b':
            fSecond ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( fSecond )
    {
        if ( !Abc_FrameReadManDsd2() )
        {
            Abc_Print( -1, "The DSD manager is not started.\n" );
            return 0;
        }
        If_DsdManPrint( (If_DsdMan_t *)Abc_FrameReadManDsd2(), NULL, Number, Support, fOccurs, fTtDump, fVerbose );
    }
    else
    {
        if ( !Abc_FrameReadManDsd() )
        {
            Abc_Print( -1, "The DSD manager is not started.\n" );
            return 0;
        }
        If_DsdManPrint( (If_DsdMan_t *)Abc_FrameReadManDsd(), NULL, Number, Support, fOccurs, fTtDump, fVerbose );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: dsd_ps [-NS num] [-obvh]\n" );
    Abc_Print( -2, "\t         prints statistics of the DSD manager\n" );
    Abc_Print( -2, "\t-N num : show structures whose ID divides by N [default = %d]\n",   Number );
    Abc_Print( -2, "\t-S num : show structures whose support size is S [default = %d]\n", Support );
    Abc_Print( -2, "\t-o     : toggles printing occurrence distribution [default = %s]\n", fOccurs? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggles dumping truth tables [default = %s]\n",            fTtDump? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggles processing second manager [default = %s]\n",       fSecond? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n",                  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDsdMatch( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * pStruct = NULL;
    int c, fVerbose = 0, fFast = 0, fAdd = 0, fSpec = 0, LutSize = 0, nConfls = 10000, nProcs = 1, nInputs = 0;
    If_DsdMan_t * pDsdMan = (If_DsdMan_t *)Abc_FrameReadManDsd();
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCPISfasvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a floating point number.\n" );
                goto usage;
            }
            LutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( LutSize < 4 || LutSize > 6 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a floating point number.\n" );
                goto usage;
            }
            nConfls = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by a floating point number.\n" );
                goto usage;
            }
            nProcs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a floating point number.\n" );
                goto usage;
            }
            nInputs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by string.\n" );
                goto usage;
            }
            pStruct = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'f':
            fFast ^= 1;
            break;
        case 'a':
            fAdd ^= 1;
            break;
        case 's':
            fSpec ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( !Abc_FrameReadManDsd() )
    {
        Abc_Print( -1, "The DSD manager is not started.\n" );
        return 0;
    }
    if ( pStruct )
    {
        char * pStructCur = If_DsdManGetCellStr( pDsdMan );
        if ( pStructCur && strcmp(pStructCur, pStruct) )
        {
            Abc_Print( -1, "DSD manager matched with cell %s should be cleaned by \"dsd_filter -m\" before matching with cell %s.\n", pStructCur, pStruct );
            return 0;
        }
        Id_DsdManTuneStr( pDsdMan, pStruct, nConfls, nProcs, nInputs, fVerbose );
    }
    else
        If_DsdManTune( pDsdMan, LutSize, fFast, fAdd, fSpec, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: dsd_match [-KCPI num] [-fasvh] [-S str]\n" );
    Abc_Print( -2, "\t         matches DSD structures with the given cell\n" );
    Abc_Print( -2, "\t-K num : LUT size used for tuning [default = %d]\n",        LutSize );
    Abc_Print( -2, "\t-C num : the maximum number of conflicts [default = %d]\n", nConfls );
    Abc_Print( -2, "\t-P num : the maximum number of processes [default = %d]\n", nProcs );
    Abc_Print( -2, "\t-I num : skip checking if support is less than this [default = %d]\n", nInputs );
    Abc_Print( -2, "\t-f     : toggles using fast check [default = %s]\n",        fFast? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggles adding tuning to the current one [default = %s]\n",    fAdd? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggles using specialized check [default = %s]\n", fSpec? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n",          fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-S str : string representing programmable cell [default = %s]\n", pStruct ? pStruct : "not used" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDsdMerge( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * FileName, * pTemp;
    char ** pArgvNew;
    int c, nArgcNew;
    FILE * pFile;
    If_DsdMan_t * pDsdMan;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( !Abc_FrameReadManDsd() )
    {
        Abc_Print( -1, "The DSD manager is not started.\n" );
        return 0;
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    // get the input file name
    FileName = pArgvNew[0];
    // fix the wrong symbol
    for ( pTemp = FileName; *pTemp; pTemp++ )
        if ( *pTemp == '>' )
            *pTemp = '\\';
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", NULL, NULL, NULL, NULL )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );
    pDsdMan = If_DsdManLoad(FileName);
    if ( pDsdMan == NULL )
        return 1;
    If_DsdManMerge( (If_DsdMan_t *)Abc_FrameReadManDsd(), pDsdMan );
    If_DsdManFree( pDsdMan, 0 );
    return 0;

usage:
    Abc_Print( -2, "usage: dsd_merge [-h] <file>\n" );
    Abc_Print( -2, "\t         merges DSD manager from file with the current one\n");
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file name to read\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDsdFilter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    If_DsdMan_t * pDsd = (If_DsdMan_t *)Abc_FrameReadManDsd();
    int c, nLimit = 0, nLutSize = -1, fCleanOccur = 0, fCleanMarks = 0, fInvMarks = 0, fUnate = 0, fThresh = 0, fThreshHeuristic = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "LKomiutsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a floating point number.\n" );
                goto usage;
            }
            nLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a floating point number.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'o':
            fCleanOccur ^= 1;
            break;
        case 'm':
            fCleanMarks ^= 1;
            break;
        case 'i':
            fInvMarks ^= 1;
            break;
        case 'u':
            fUnate ^= 1;
            break;
        case 't':
            fThresh ^= 1;
            break;
        case 's':
            fThreshHeuristic ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pDsd == NULL )
    {
        Abc_Print( -1, "The DSD manager is not started.\n" );
        return 0;
    }
    if ( nLimit > 0 )
        Abc_FrameSetManDsd( If_DsdManFilter(pDsd, nLimit) );
    if ( nLutSize >= 0 )
        If_DsdManSetLutSize( pDsd, nLutSize );
    if ( fCleanOccur )
        If_DsdManCleanOccur( pDsd, fVerbose );
    if ( fCleanMarks )
        If_DsdManCleanMarks( pDsd, fVerbose );
    if ( fInvMarks )
        If_DsdManInvertMarks( pDsd, fVerbose );
#ifdef ABC_USE_CUDD
    else if ( nLimit == 0 )
        Id_DsdManTuneThresh( pDsd, fUnate, fThresh, fThreshHeuristic, fVerbose );
#endif
    return 0;

usage:
    Abc_Print( -2, "usage: dsd_filter [-LK num] [-omiutsvh]\n" );
    Abc_Print( -2, "\t         filtering structured and modifying parameters of DSD manager\n" );
    Abc_Print( -2, "\t-L num : remove structures with fewer occurrences that this [default = %d]\n", nLimit );
    Abc_Print( -2, "\t-K num : new LUT size to set for the DSD manager [default = %d]\n",           nLutSize );
    Abc_Print( -2, "\t-o     : toggles cleaning occurrence counters [default = %s]\n",              fCleanOccur? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggles cleaning matching marks [default = %s]\n",                   fCleanMarks? "yes": "no" );
    Abc_Print( -2, "\t-i     : toggles inverting matching marks [default = %s]\n",                  fInvMarks? "yes": "no" );
    Abc_Print( -2, "\t-u     : toggles marking unate functions [default = %s]\n",                   fUnate? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggles marking threshold functions [default = %s]\n",               fThresh? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggles marking threshold functions heuristically [default = %s]\n", fThreshHeuristic?"yes":"no");
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n",                            fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t        \n" );
    Abc_Print( -2, "\t         Option \"dsd_filter -s\" was contributed by Augusto Neutzling and Jody Matos from\n" );
    Abc_Print( -2, "\t         Federal University of Rio Grande do Sul, Brazil. The paper describing the method:\n" );
    Abc_Print( -2, "\t         A. Neutzling, J. M. Matos, A. Mishchenko, R. Ribas, and A. Reis,\n" );
    Abc_Print( -2, "\t         \"Threshold logic synthesis based on cut pruning\". Proc. ICCAD 2015.\n" );
//    Abc_Print( -2, "\t        http://www.eecs.berkeley.edu/~alanmi/publications/2015/iccad15_thresh.pdf\n" );
    return 1;
}



/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandInit( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Abc_Obj_t * pObj;
    char * pInitStr = NULL;
    int fZeros    = 0;
    int fOnes     = 0;
    int fRandom   = 0;
    int fDontCare = 0;
    int fUseCexCs = 0;
    int fUseCexNs = 0;
    int c, i;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Szordcnh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a file name.\n" );
                goto usage;
            }
            pInitStr = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'z':
            fZeros ^= 1;
            break;
        case 'o':
            fOnes ^= 1;
            break;
        case 'r':
            fRandom ^= 1;
            break;
        case 'd':
            fDontCare ^= 1;
            break;
        case 'c':
            fUseCexCs ^= 1;
            break;
        case 'n':
            fUseCexNs ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( 0, "The current network is combinational.\n" );
        return 0;
    }

    if ( pInitStr != NULL )
    {
        if ( (int)strlen(pInitStr) != Abc_NtkLatchNum(pNtk) )
        {
            Abc_Print( -1, "The length of init string (%d) differs from the number of flops (%d).\n", strlen(pInitStr), Abc_NtkLatchNum(pNtk) );
            return 1;
        }
        Abc_NtkForEachLatch( pNtk, pObj, i )
            if ( pInitStr[i] == '0' )
                Abc_LatchSetInit0( pObj );
            else if ( pInitStr[i] == '1' )
                Abc_LatchSetInit1( pObj );
            else
                Abc_LatchSetInitDc( pObj );
        return 0;
    }

    if ( fZeros )
    {
        Abc_NtkForEachLatch( pNtk, pObj, i )
            Abc_LatchSetInit0( pObj );
    }
    else if ( fOnes )
    {
        Abc_NtkForEachLatch( pNtk, pObj, i )
            Abc_LatchSetInit1( pObj );
    }
    else if ( fRandom )
    {
        srand( time(NULL) );
        Abc_NtkForEachLatch( pNtk, pObj, i )
            if ( rand() & 1 )
                Abc_LatchSetInit1( pObj );
            else
                Abc_LatchSetInit0( pObj );
    }
    else if ( fDontCare )
    {
        Abc_NtkForEachLatch( pNtk, pObj, i )
            Abc_LatchSetInitDc( pObj );
    }
    else if ( fUseCexCs || fUseCexNs )
    {
        extern Vec_Int_t * Saig_ManReturnFailingState( Aig_Man_t * pMan, Abc_Cex_t * p, int fNextOne );
        Aig_Man_t * pMan;
        Vec_Int_t * vFailState;
        if ( fUseCexCs && fUseCexNs )
        {
            Abc_Print( -1, "The two options (-c and -n) are incompatible.\n" );
            return 0;
        }
        if ( !Abc_NtkIsStrash(pNtk) )
        {
            Abc_Print( -1, "The current network should be an AIG.\n" );
            return 0;
        }
        if ( pAbc->pCex == NULL )
        {
            Abc_Print( -1, "The current CEX is not available.\n" );
            return 0;
        }
        pMan = Abc_NtkToDar( pNtk, 0, 1 );
        vFailState = Saig_ManReturnFailingState( pMan, pAbc->pCex, fUseCexNs );
        //Vec_IntPrint( vFailState );
        Aig_ManStop( pMan );
        Abc_NtkForEachLatch( pNtk, pObj, i )
            if ( Vec_IntEntry( vFailState, i ) )
                Abc_LatchSetInit1( pObj );
            else
                Abc_LatchSetInit0( pObj );
        Vec_IntFree( vFailState );
    }
    else
        Abc_Print( -1, "The initial states remain unchanged.\n" );
    return 0;

usage:
    Abc_Print( -2, "usage: init [-zordcnh] [-S <init_string>]\n" );
    Abc_Print( -2, "\t         resets initial states of all latches\n" );
    Abc_Print( -2, "\t-z     : set zeros initial states [default = %s]\n", fZeros? "yes": "no" );
    Abc_Print( -2, "\t-o     : set ones initial states [default = %s]\n", fOnes? "yes": "no" );
    Abc_Print( -2, "\t-d     : set don't-care initial states [default = %s]\n", fDontCare? "yes": "no" );
    Abc_Print( -2, "\t-r     : set random initial states [default = %s]\n", fRandom? "yes": "no" );
    Abc_Print( -2, "\t-c     : set failure current state from the CEX (and run \"zero\") [default = %s]\n", fUseCexCs? "yes": "no" );
    Abc_Print( -2, "\t-n     : set next state after failure from the CEX (and run \"zero\") [default = %s]\n", fUseCexNs? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t-S str : (optional) initial state  [default = unused]\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandZero( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( 0, "The current network is combinational.\n" );
        return 0;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for AIGs.\n" );
        return 0;
    }

    // get the new network
    pNtkRes = Abc_NtkRestrashZero( pNtk, 0 );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Converting to sequential AIG has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: zero [-h]\n" );
    Abc_Print( -2, "\t        converts latches to have const-0 initial value\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandUndc( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c, fUseCex = 0;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ch" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fUseCex ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( fUseCex )
    {
        char * pInit;
        Abc_Cex_t * pTemp;
        int k, nFlopsX = 0;
        if ( pAbc->pCex == NULL )
        {
            Abc_Print( -1, "Current CEX is not available.\n" );
            return 1;
        }
        pInit = Abc_NtkCollectLatchValuesStr( pAbc->pNtkCur );
        // count the number of X-valued flops
        for ( k = 0; k < Abc_NtkLatchNum(pAbc->pNtkCur); k++ )
            nFlopsX += (int)(pInit[k] == 'x');
        // compare this value
        if ( Abc_NtkPiNum(pNtk) + nFlopsX != pAbc->pCex->nPis )
        {
            Abc_Print( -1, "The number of PIs (%d) plus X-valued flops (%d) in the original network does not match the number of PIs in the current CEX (%d).\n",
                Abc_NtkPiNum(pNtk), Abc_NtkLatchNum(pNtk), pAbc->pCex->nPis );
            return 1;
        }
        pAbc->pCex = Abc_CexTransformUndc( pTemp = pAbc->pCex, pInit );
        assert( pAbc->pCex->nPis == Abc_NtkPiNum(pAbc->pNtkCur) );
        assert( pAbc->pCex->nRegs == Abc_NtkLatchNum(pAbc->pNtkCur) );
        Abc_CexFree( pTemp );
        ABC_FREE( pInit );
        return 0;
    }

    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( 0, "The current network is combinational.\n" );
        return 0;
    }

    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command works only for logic networks.\n" );
        return 0;
    }

    // get the new network
    Abc_NtkConvertDcLatches( pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: undc [-ch]\n" );
    Abc_Print( -2, "\t        converts latches with DC init values into free PIs\n" );
    Abc_Print( -2, "\t-c    : toggles transforming CEX after \"logic;undc;st;zero\" [default = %s]\n", fUseCex? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandOneHot( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    extern Abc_Ntk_t * Abc_NtkConvertOnehot( Abc_Ntk_t * pNtk );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( 0, "The current network is combinational.\n" );
        return 0;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command works only for logic networks.\n" );
        return 0;
    }
    // get the new network
    pNtkRes = Abc_NtkConvertOnehot( pNtk );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Converting to one-hot encoding has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: onehot [-h]\n" );
    Abc_Print( -2, "\t        converts natural encoding into one-hot encoding\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPipe( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int nLatches;
    extern void Abc_NtkLatchPipe( Abc_Ntk_t * pNtk, int nLatches );
    // set defaults
    nLatches = 5;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Lh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nLatches = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLatches < 0 )
                goto usage;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( 0, "Abc_CommandPipe(): Expecting a logic network (run command \"logic\").\n" );
        return 0;
    }

    if ( !Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( 0, "Abc_CommandPipe(): Expecting a combinational network.\n" );
        return 0;
    }

    // update the network
    Abc_NtkLatchPipe( pNtk, nLatches );
    return 0;

usage:
    Abc_Print( -2, "usage: pipe [-L num] [-h]\n" );
    Abc_Print( -2, "\t         inserts the given number of latches at each PI for pipelining\n" );
    Abc_Print( -2, "\t-L num : the number of latches to insert [default = %d]\n", nLatches );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSeq( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( -1, "The network has no latches.\n" );
        return 0;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Conversion to sequential AIG works only for combinational AIGs (run \"strash\").\n" );
        return 1;
    }

    // get the new network
//    pNtkRes = Abc_NtkAigToSeq( pNtk );
    pNtkRes = NULL;
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Converting to sequential AIG has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: seq [-h]\n" );
    Abc_Print( -2, "\t        converts AIG into sequential AIG\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandUnseq( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fShare;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fShare = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "sh" ) ) != EOF )
    {
        switch ( c )
        {
        case 's':
            fShare ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
/*
    if ( !Abc_NtkIsSeq(pNtk) )
    {
        Abc_Print( -1, "Conversion to combinational AIG works only for sequential AIG (run \"seq\").\n" );
        return 1;
    }
*/
    // share the latches on the fanout edges
//    if ( fShare )
//        Seq_NtkShareFanouts(pNtk);

    // get the new network
//    pNtkRes = Abc_NtkSeqToLogicSop( pNtk );
    pNtkRes = NULL;
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Converting sequential AIG into an SOP logic network has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: unseq [-sh]\n" );
    Abc_Print( -2, "\t        converts sequential AIG into an SOP logic network\n" );
    Abc_Print( -2, "\t-s    : toggle sharing latches [default = %s]\n", fShare? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandRetime( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, nMaxIters;
    int fForward;
    int fBackward;
    int fOneStep;
    int fUseOldNames;
    int fVerbose;
    int Mode;
    int nDelayLim;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Mode      =  5;
    nDelayLim =  0;
    fForward  =  0;
    fBackward =  0;
    fOneStep  =  0;
    fUseOldNames = 0;
    fVerbose  =  0;
    nMaxIters = 15;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "MDfbsovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
                goto usage;
            }
            Mode = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Mode < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nDelayLim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDelayLim < 0 )
                goto usage;
            break;
        case 'f':
            fForward ^= 1;
            break;
        case 'b':
            fBackward ^= 1;
            break;
        case 's':
            fOneStep ^= 1;
            break;
        case 'o':
            fUseOldNames ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( fForward && fBackward )
    {
        Abc_Print( -1, "Only one switch \"-f\" or \"-b\" can be selected at a time.\n" );
        return 1;
    }

    if ( !Abc_NtkLatchNum(pNtk) )
    {
//        Abc_Print( -1, "The network has no latches. Retiming is not performed.\n" );
        return 0;
    }

    if ( Mode < 0 || Mode > 6 )
    {
        Abc_Print( -1, "The mode (%d) is incorrect. Retiming is not performed.\n", Mode );
        return 0;
    }

    if ( Abc_NtkIsStrash(pNtk) )
    {
        if ( Abc_NtkGetChoiceNum(pNtk) )
        {
            Abc_Print( -1, "Retiming with choice nodes is not implemented.\n" );
            return 0;
        }
        // convert the network into an SOP network
        pNtkRes = Abc_NtkToLogic( pNtk );
        // perform the retiming
        Abc_NtkRetime( pNtkRes, Mode, nDelayLim, fForward, fBackward, fOneStep, fUseOldNames, fVerbose );
        // replace the current network
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
        return 0;
    }

    // get the network in the SOP form
    if ( !Abc_NtkToSop(pNtk, -1, ABC_INFINITY) )
    {
        Abc_Print( -1, "Converting to SOPs has failed.\n" );
        return 0;
    }

    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "The network is not a logic network. Retiming is not performed.\n" );
        return 0;
    }

    // perform the retiming
    Abc_NtkRetime( pNtk, Mode, nDelayLim, fForward, fBackward, fOneStep, fUseOldNames, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: retime [-MD num] [-fbsovh]\n" );
    Abc_Print( -2, "\t         retimes the current network using one of the algorithms:\n" );
    Abc_Print( -2, "\t             1: most forward retiming\n" );
    Abc_Print( -2, "\t             2: most backward retiming\n" );
    Abc_Print( -2, "\t             3: forward and backward min-area retiming\n" );
    Abc_Print( -2, "\t             4: forward and backward min-delay retiming\n" );
    Abc_Print( -2, "\t             5: mode 3 followed by mode 4\n" );
    Abc_Print( -2, "\t             6: Pan's optimum-delay retiming using binary search\n" );
    Abc_Print( -2, "\t-M num : the retiming algorithm to use [default = %d]\n", Mode );
    Abc_Print( -2, "\t-D num : the minimum delay target (0=unused) [default = %d]\n", nDelayLim );
    Abc_Print( -2, "\t-f     : enables forward-only retiming in modes 3,4,5 [default = %s]\n", fForward? "yes": "no" );
    Abc_Print( -2, "\t-b     : enables backward-only retiming in modes 3,4,5 [default = %s]\n", fBackward? "yes": "no" );
    Abc_Print( -2, "\t-s     : enables retiming one step only in mode 4 [default = %s]\n", fOneStep? "yes": "no" );
    Abc_Print( -2, "\t-o     : enables usind old flop naming conventions [default = %s]\n", fUseOldNames? "yes": "no" );
    Abc_Print( -2, "\t-v     : enables verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
//    Abc_Print( -2, "\t-I num : max number of iterations of l-value computation [default = %d]\n", nMaxIters );
//    Abc_Print( -2, "\t-f     : toggle forward retiming (for AIGs) [default = %s]\n", fForward? "yes": "no" );
//    Abc_Print( -2, "\t-b     : toggle backward retiming (for AIGs) [default = %s]\n", fBackward? "yes": "no" );
//    Abc_Print( -2, "\t-i     : toggle computation of initial state [default = %s]\n", fInitial? "yes": "no" );
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDRetime( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int fMinArea;
    int fForwardOnly;
    int fBackwardOnly;
    int fInitial;
    int nStepsMax;
    int fFastAlgo;
    int fVerbose;
    int c, nMaxIters;
    extern Abc_Ntk_t * Abc_NtkDarRetime( Abc_Ntk_t * pNtk, int nStepsMax, int fVerbose );
    extern Abc_Ntk_t * Abc_NtkDarRetimeF( Abc_Ntk_t * pNtk, int nStepsMax, int fVerbose );
    extern Abc_Ntk_t * Abc_NtkDarRetimeMinArea( Abc_Ntk_t * pNtk, int nMaxIters, int fForwardOnly, int fBackwardOnly, int fInitial, int fVerbose );
    extern Abc_Ntk_t * Abc_NtkDarRetimeMostFwd( Abc_Ntk_t * pNtk, int nMaxIters, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fMinArea  = 1;
    fForwardOnly = 0;
    fBackwardOnly = 0;
    fInitial = 1;
    nStepsMax = 100000;
    fFastAlgo = 0;
    nMaxIters = 20;
    fVerbose  = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NSmfbiavh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nMaxIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMaxIters < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nStepsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nStepsMax < 0 )
                goto usage;
            break;
        case 'm':
            fMinArea ^= 1;
            break;
        case 'f':
            fForwardOnly ^= 1;
            break;
        case 'b':
            fBackwardOnly ^= 1;
            break;
        case 'i':
            fInitial ^= 1;
            break;
        case 'a':
            fFastAlgo ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkLatchNum(pNtk) )
    {
//        Abc_Print( -1, "The network has no latches. Retiming is not performed.\n" );
        return 0;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for structrally hashed networks. Run \"st\".\n" );
        return 0;
    }

    // perform the retiming
    if ( fMinArea )
        pNtkRes = Abc_NtkDarRetimeMinArea( pNtk, nMaxIters, fForwardOnly, fBackwardOnly, fInitial, fVerbose );
    else if ( fFastAlgo )
        pNtkRes = Abc_NtkDarRetime( pNtk, nStepsMax, fVerbose );
    else
//        pNtkRes = Abc_NtkDarRetimeF( pNtk, nStepsMax, fVerbose );
        pNtkRes = Abc_NtkDarRetimeMostFwd( pNtk, nMaxIters, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Retiming has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: dretime [-NS num] [-mfbiavh]\n" );
    Abc_Print( -2, "\t         new implementation of min-area (or most-forward) retiming\n" );
    Abc_Print( -2, "\t-m     : toggle min-area retiming and most-forward retiming [default = %s]\n", fMinArea? "min-area": "most-fwd" );
    Abc_Print( -2, "\t-f     : enables forward-only retiming [default = %s]\n", fForwardOnly? "yes": "no" );
    Abc_Print( -2, "\t-b     : enables backward-only retiming [default = %s]\n", fBackwardOnly? "yes": "no" );
    Abc_Print( -2, "\t-i     : enables init state computation [default = %s]\n", fInitial? "yes": "no" );
    Abc_Print( -2, "\t-N num : the max number of one-frame iterations to perform [default = %d]\n", nMaxIters );
    Abc_Print( -2, "\t-S num : the max number of forward retiming steps to perform [default = %d]\n", nStepsMax );
    Abc_Print( -2, "\t-a     : enables a fast most-forward algorithm [default = %s]\n", fFastAlgo? "yes": "no" );
    Abc_Print( -2, "\t-v     : enables verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFlowRetime( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c, nMaxIters;
    int fForward;
    int fBackward;
    int fVerbose;
    int fComputeInit, fGuaranteeInit, fBlockConst;
    int fFastButConservative;
    int maxDelay;

    extern Abc_Ntk_t* Abc_FlowRetime_MinReg( Abc_Ntk_t * pNtk, int fVerbose,
                                             int fComputeInit, int fGuaranteeInit, int fBlockConst,
                                             int fForward, int fBackward, int nMaxIters,
                                             int maxDelay, int fFastButConservative);

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fForward  =  0;
    fFastButConservative = 0;
    fBackward =  0;
    fComputeInit =  1;
    fGuaranteeInit =  0;
    fVerbose  =  0;
    fBlockConst  =  0;
    nMaxIters = 999;
    maxDelay  = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "MDfcgbkivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nMaxIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMaxIters < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a positive integer.\n" );
                goto usage;
            }
            maxDelay = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( maxDelay < 0 )
                goto usage;
           break;
        case 'f':
            fForward ^= 1;
            break;
        case 'c':
            fFastButConservative ^= 1;
            break;
        case 'i':
            fComputeInit ^= 1;
            break;
        case 'b':
            fBackward ^= 1;
            break;
        case 'g':
            fGuaranteeInit ^= 1;
            break;
        case 'k':
            fBlockConst ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( fForward && fBackward )
    {
        Abc_Print( -1, "Only one switch \"-f\" or \"-b\" can be selected at a time.\n" );
        return 1;
    }

    if ( fGuaranteeInit && !fComputeInit )
    {
      Abc_Print( -1, "Initial state guarantee (-g) requires initial state computation (-i).\n" );
      return 1;
    }

    if ( !Abc_NtkLatchNum(pNtk) )
    {
        Abc_Print( -1, "The network has no latches. Retiming is not performed.\n" );
        return 0;
    }

    if ( Abc_NtkGetChoiceNum(pNtk) )
      {
        Abc_Print( -1, "Retiming with choice nodes is not implemented.\n" );
        return 0;
      }

    // perform the retiming
    pNtkRes = Abc_FlowRetime_MinReg( pNtk, fVerbose, fComputeInit,
                                     fGuaranteeInit, fBlockConst,
                                     fForward, fBackward,
                                     nMaxIters, maxDelay, fFastButConservative );

    if (pNtkRes != pNtk)
      Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );

    return 0;

usage:
    Abc_Print( -2, "usage: fretime [-M num] [-D num] [-fbvih]\n" );
    Abc_Print( -2, "\t         retimes the current network using flow-based algorithm\n" );
    Abc_Print( -2, "\t-M num : the maximum number of iterations [default = %d]\n", nMaxIters );
    Abc_Print( -2, "\t-D num : the maximum delay [default = none]\n" );
    Abc_Print( -2, "\t-i     : enables init state computation [default = %s]\n", fComputeInit? "yes": "no" );
    Abc_Print( -2, "\t-k     : blocks retiming over const nodes [default = %s]\n", fBlockConst? "yes": "no" );
    Abc_Print( -2, "\t-g     : guarantees init state computation [default = %s]\n", fGuaranteeInit? "yes": "no" );
    Abc_Print( -2, "\t-c     : very fast (but conserv.) delay constraints [default = %s]\n", fFastButConservative? "yes": "no" );
    Abc_Print( -2, "\t-f     : enables forward-only retiming  [default = %s]\n", fForward? "yes": "no" );
    Abc_Print( -2, "\t-b     : enables backward-only retiming [default = %s]\n", fBackward? "yes": "no" );
    Abc_Print( -2, "\t-v     : enables verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCRetime( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fVerbose;
    extern Abc_Ntk_t * Abc_NtkCRetime( Abc_Ntk_t * pNtk, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fVerbose    = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for logic networks.\n" );
        return 1;
    }
    if ( !Abc_NtkLatchNum(pNtk) )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    // modify the current network
    pNtkRes = Abc_NtkCRetime( pNtk, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Sequential cleanup has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: cretime [-vh]\n" );
    Abc_Print( -2, "\t         performs most-forward retiming with equiv classes\n" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSeqFpga( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkNew, * pNtkRes;
    int c, nMaxIters;
    int fVerbose;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nMaxIters = 15;
    fVerbose  =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nMaxIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMaxIters < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( Abc_NtkHasAig(pNtk) )
    {
/*
        // quit if there are choice nodes
        if ( Abc_NtkGetChoiceNum(pNtk) )
        {
            Abc_Print( -1, "Currently cannot map/retime networks with choice nodes.\n" );
            return 0;
        }
*/
//        if ( Abc_NtkIsStrash(pNtk) )
//            pNtkNew = Abc_NtkAigToSeq(pNtk);
//        else
//            pNtkNew = Abc_NtkDup(pNtk);
        pNtkNew = NULL;
    }
    else
    {
        // strash and balance the network
        pNtkNew = Abc_NtkStrash( pNtk, 0, 0, 0 );
        if ( pNtkNew == NULL )
        {
            Abc_Print( -1, "Strashing before FPGA mapping/retiming has failed.\n" );
            return 1;
        }

        pNtkNew = Abc_NtkBalance( pNtkRes = pNtkNew, 0, 0, 1 );
        Abc_NtkDelete( pNtkRes );
        if ( pNtkNew == NULL )
        {
            Abc_Print( -1, "Balancing before FPGA mapping has failed.\n" );
            return 1;
        }

        // convert into a sequential AIG
//        pNtkNew = Abc_NtkAigToSeq( pNtkRes = pNtkNew );
        pNtkNew = NULL;
        Abc_NtkDelete( pNtkRes );
        if ( pNtkNew == NULL )
        {
            Abc_Print( -1, "Converting into a seq AIG before FPGA mapping/retiming has failed.\n" );
            return 1;
        }

        Abc_Print( 1, "The network was strashed and balanced before FPGA mapping/retiming.\n" );
    }

    // get the new network
//    pNtkRes = Seq_NtkFpgaMapRetime( pNtkNew, nMaxIters, fVerbose );
    pNtkRes = NULL;
    if ( pNtkRes == NULL )
    {
//        Abc_Print( -1, "Sequential FPGA mapping has failed.\n" );
        Abc_NtkDelete( pNtkNew );
        return 0;
    }
    Abc_NtkDelete( pNtkNew );
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: sfpga [-I num] [-vh]\n" );
    Abc_Print( -2, "\t         performs integrated sequential FPGA mapping/retiming\n" );
    Abc_Print( -2, "\t-I num : max number of iterations of l-value computation [default = %d]\n", nMaxIters );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSeqMap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkNew, * pNtkRes;
    int c, nMaxIters;
    int fVerbose;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nMaxIters = 15;
    fVerbose  =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nMaxIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMaxIters < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( Abc_NtkHasAig(pNtk) )
    {
/*
        // quit if there are choice nodes
        if ( Abc_NtkGetChoiceNum(pNtk) )
        {
            Abc_Print( -1, "Currently cannot map/retime networks with choice nodes.\n" );
            return 0;
        }
*/
//        if ( Abc_NtkIsStrash(pNtk) )
//            pNtkNew = Abc_NtkAigToSeq(pNtk);
//        else
//            pNtkNew = Abc_NtkDup(pNtk);
        pNtkNew = NULL;
    }
    else
    {
        // strash and balance the network
        pNtkNew = Abc_NtkStrash( pNtk, 0, 0, 0 );
        if ( pNtkNew == NULL )
        {
            Abc_Print( -1, "Strashing before SC mapping/retiming has failed.\n" );
            return 1;
        }

        pNtkNew = Abc_NtkBalance( pNtkRes = pNtkNew, 0, 0, 1 );
        Abc_NtkDelete( pNtkRes );
        if ( pNtkNew == NULL )
        {
            Abc_Print( -1, "Balancing before SC mapping/retiming has failed.\n" );
            return 1;
        }

        // convert into a sequential AIG
//        pNtkNew = Abc_NtkAigToSeq( pNtkRes = pNtkNew );
        pNtkNew = NULL;
        Abc_NtkDelete( pNtkRes );
        if ( pNtkNew == NULL )
        {
            Abc_Print( -1, "Converting into a seq AIG before SC mapping/retiming has failed.\n" );
            return 1;
        }

        Abc_Print( -1, "The network was strashed and balanced before SC mapping/retiming.\n" );
    }

    // get the new network
//    pNtkRes = Seq_MapRetime( pNtkNew, nMaxIters, fVerbose );
    pNtkRes = NULL;
    if ( pNtkRes == NULL )
    {
//        Abc_Print( -1, "Sequential FPGA mapping has failed.\n" );
        Abc_NtkDelete( pNtkNew );
        return 0;
    }
    Abc_NtkDelete( pNtkNew );

    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: smap [-I num] [-vh]\n" );
    Abc_Print( -2, "\t         performs integrated sequential standard-cell mapping/retiming\n" );
    Abc_Print( -2, "\t-I num : max number of iterations of l-value computation [default = %d]\n", nMaxIters );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSeqSweep( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    Fra_Ssw_t Pars, * pPars = &Pars;
    int c;
    extern Abc_Ntk_t * Abc_NtkDarSeqSweep( Abc_Ntk_t * pNtk, Fra_Ssw_t * pPars );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    pPars->nPartSize  = 0;
    pPars->nOverSize  = 0;
    pPars->nFramesP   = 0;
    pPars->nFramesK   = 1;
    pPars->nMaxImps   = 5000;
    pPars->nMaxLevs   = 0;
    pPars->fUseImps   = 0;
    pPars->fRewrite   = 0;
    pPars->fFraiging  = 0;
    pPars->fLatchCorr = 0;
    pPars->fWriteImps = 0;
    pPars->fUse1Hot   = 0;
    pPars->fVerbose   = 0;
    pPars->TimeLimit  = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PQNFILirfletvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nPartSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nPartSize < 2 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nOverSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nOverSize < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesP = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesP < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesK = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesK <= 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxImps = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxImps <= 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxLevs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxLevs <= 0 )
                goto usage;
            break;
        case 'i':
            pPars->fUseImps ^= 1;
            break;
        case 'r':
            pPars->fRewrite ^= 1;
            break;
        case 'f':
            pPars->fFraiging ^= 1;
            break;
        case 'l':
            pPars->fLatchCorr ^= 1;
            break;
        case 'e':
            pPars->fWriteImps ^= 1;
            break;
        case 't':
            pPars->fUse1Hot ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( 0, "The network is combinational (run \"fraig\" or \"fraig_sweep\").\n" );
        return 0;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for structrally hashed networks. Run \"st\".\n" );
        return 0;
    }

    if ( pPars->nFramesK > 1 && pPars->fUse1Hot )
    {
        Abc_Print( -1, "Currrently can only use one-hotness for simple induction (K=1).\n" );
        return 0;
    }

    if ( pPars->nFramesP && pPars->fUse1Hot )
    {
        Abc_Print( -1, "Currrently can only use one-hotness without prefix.\n" );
        return 0;
    }

    // get the new network
    pNtkRes = Abc_NtkDarSeqSweep( pNtk, pPars );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Sequential sweeping has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: ssweep [-PQNFL <num>] [-lrfetvh]\n" );
    Abc_Print( -2, "\t         performs sequential sweep using K-step induction\n" );
    Abc_Print( -2, "\t-P num : max partition size (0 = no partitioning) [default = %d]\n", pPars->nPartSize );
    Abc_Print( -2, "\t-Q num : partition overlap (0 = no overlap) [default = %d]\n", pPars->nOverSize );
    Abc_Print( -2, "\t-N num : number of time frames to use as the prefix [default = %d]\n", pPars->nFramesP );
    Abc_Print( -2, "\t-F num : number of time frames for induction (1=simple) [default = %d]\n", pPars->nFramesK );
    Abc_Print( -2, "\t-L num : max number of levels to consider (0=all) [default = %d]\n", pPars->nMaxLevs );
//    Abc_Print( -2, "\t-I num : max number of implications to consider [default = %d]\n", pPars->nMaxImps );
//    Abc_Print( -2, "\t-i     : toggle using implications [default = %s]\n", pPars->fUseImps? "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle latch correspondence only [default = %s]\n", pPars->fLatchCorr? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle AIG rewriting [default = %s]\n", pPars->fRewrite? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle fraiging (combinational SAT sweeping) [default = %s]\n", pPars->fFraiging? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle writing implications as assertions [default = %s]\n", pPars->fWriteImps? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle using one-hotness conditions [default = %s]\n", pPars->fUse1Hot? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSeqSweep2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    Ssw_Pars_t Pars, * pPars = &Pars;
    int c, nConstrs = 0;
    extern Abc_Ntk_t * Abc_NtkDarSeqSweep2( Abc_Ntk_t * pNtk, Ssw_Pars_t * pPars );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Ssw_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PQFCLSIVMNXRBcmplkodsefqvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nPartSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nPartSize < 2 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nOverSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nOverSize < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesK = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesK <= 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit <= 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxLevs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxLevs <= 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesAddSim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesAddSim < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nItersStop = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nItersStop < 0 )
                goto usage;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSatVarMax2 = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSatVarMax2 < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRecycleCalls2 = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRecycleCalls2 < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nConstrs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConstrs < 0 )
                goto usage;
            break;
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLimitMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLimitMax < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSkip = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSkip < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSkipLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSkipLimit < 0 )
                goto usage;
            break;
        case 'c':
            pPars->fConstrs ^= 1;
            break;
        case 'm':
            pPars->fMergeFull ^= 1;
            break;
        case 'p':
            pPars->fPolarFlip ^= 1;
            break;
        case 'l':
            pPars->fLatchCorr ^= 1;
            break;
        case 'k':
            pPars->fConstCorr ^= 1;
            break;
        case 'o':
            pPars->fOutputCorr ^= 1;
            break;
//        case 'f':
//            pPars->fSemiFormal ^= 1;
//            break;
        case 'd':
            pPars->fDynamic ^= 1;
            break;
        case 's':
            pPars->fLocalSim ^= 1;
            break;
        case 'e':
            pPars->fEquivDump ^= 1;
            break;
        case 'f':
            pPars->fEquivDump2 ^= 1;
            break;
        case 'q':
            pPars->fStopWhenGone ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fFlopVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( 0, "The network is combinational (run \"fraig\" or \"fraig_sweep\").\n" );
        return 0;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( 0, "This command works only for structrally hashed networks. Run \"st\".\n" );
        return 0;
    }

    if ( Abc_NtkPiNum(pNtk) == 0 )
    {
        Abc_Print( 0, "This command works only for designs with primary inputs.\n" );
        return 0;
    }

    // if constraints are to be used, network should have no constraints
    if ( nConstrs > 0 )
    {
        if ( Abc_NtkConstrNum(pNtk) > 0 )
        {
            Abc_Print( -1, "The network already has %d constraints.\n", Abc_NtkConstrNum(pNtk) );
            return 0;
        }
        else
        {
            Abc_Print( 0, "Setting the number of constraints to be %d.\n", nConstrs );
            pNtk->nConstrs = nConstrs;
        }
    }

    if ( pPars->fConstrs )
    {
        if ( Abc_NtkConstrNum(pNtk) == Abc_NtkPoNum(pNtk) )
        {
            Abc_Print( 0, "Command cannot be applied because the network has only constraint outputs (no primary outputs).\n" );
            return 0;
        }
        if ( Abc_NtkConstrNum(pNtk) > 0 )
            Abc_Print( 0, "Performing scorr with %d constraints.\n", Abc_NtkConstrNum(pNtk) );
        else
        {
            Abc_Print( 0, "Performing constraint-based scorr without constraints.\n" );
            pPars->fConstrs = 0;
        }
    }
    if ( pPars->fEquivDump && pPars->fEquivDump2 )
    {
        Abc_Print( 0, "Command line switches \'-e\' and \'-f\' cannot be used at the same time.\n" );
        return 0;
    }

    // get the new network
    pNtkRes = Abc_NtkDarSeqSweep2( pNtk, pPars );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Sequential sweeping has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: scorr [-PQFCLSIVMNXRB <num>] [-cmplkodsefqvwh]\n" );
    Abc_Print( -2, "\t         performs sequential sweep using K-step induction\n" );
    Abc_Print( -2, "\t-P num : max partition size (0 = no partitioning) [default = %d]\n", pPars->nPartSize );
    Abc_Print( -2, "\t-Q num : partition overlap (0 = no overlap) [default = %d]\n", pPars->nOverSize );
    Abc_Print( -2, "\t-F num : number of time frames for induction (1=simple) [default = %d]\n", pPars->nFramesK );
    Abc_Print( -2, "\t-C num : max number of conflicts at a node (0=inifinite) [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-L num : max number of levels to consider (0=all) [default = %d]\n", pPars->nMaxLevs );
    Abc_Print( -2, "\t-N num : number of last POs treated as constraints (0=none) [default = %d]\n", pPars->fConstrs );
    Abc_Print( -2, "\t-S num : additional simulation frames for c-examples (0=none) [default = %d]\n", pPars->nFramesAddSim );
    Abc_Print( -2, "\t-I num : iteration number to stop and output SR-model (-1=none) [default = %d]\n", pPars->nItersStop );
    Abc_Print( -2, "\t-V num : min var num needed to recycle the SAT solver [default = %d]\n", pPars->nSatVarMax2 );
    Abc_Print( -2, "\t-M num : min call num needed to recycle the SAT solver [default = %d]\n", pPars->nRecycleCalls2 );
    Abc_Print( -2, "\t-N num : set last <num> POs to be constraints (use with -c) [default = %d]\n", nConstrs );
    Abc_Print( -2, "\t-X num : the number of iterations of little or no improvement [default = %d]\n", pPars->nLimitMax );
    Abc_Print( -2, "\t-R num : the number used to skip some constraints [default = %d]\n", pPars->nSkip );
    Abc_Print( -2, "\t-B num : the limit on the size of constraints to skip [default = %d]\n", pPars->nSkipLimit );
    Abc_Print( -2, "\t-c     : toggle using explicit constraints [default = %s]\n", pPars->fConstrs? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle full merge if constraints are present [default = %s]\n", pPars->fMergeFull? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle aligning polarity of SAT variables [default = %s]\n", pPars->fPolarFlip? "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle doing latch correspondence [default = %s]\n", pPars->fLatchCorr? "yes": "no" );
    Abc_Print( -2, "\t-k     : toggle doing constant correspondence [default = %s]\n", pPars->fConstCorr? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle doing \'PO correspondence\' [default = %s]\n", pPars->fOutputCorr? "yes": "no" );
//    Abc_Print( -2, "\t-f     : toggle filtering using iterative BMC [default = %s]\n", pPars->fSemiFormal? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle dynamic addition of constraints [default = %s]\n", pPars->fDynamic? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle local simulation in the cone of influence [default = %s]\n", pPars->fLocalSim? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle dumping disproved internal equivalences [default = %s]\n", pPars->fEquivDump? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle dumping proved internal equivalences [default = %s]\n", pPars->fEquivDump2? "yes": "no" );
    Abc_Print( -2, "\t-q     : toggle quitting when PO is not a constant candidate [default = %s]\n", pPars->fStopWhenGone? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printout of flop equivalences [default = %s]\n", pPars->fFlopVerbose? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestSeqSweep( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * pFileName;
    Fra_Ssw_t Pars, * pPars = &Pars;
    int c;
//    extern Abc_Ntk_t * Abc_NtkDarSeqSweep( Abc_Ntk_t * pNtk, Fra_Ssw_t * pPars );
    extern int Fra_FraigInductionTest( char * pFileName, Fra_Ssw_t * pParams );

    // set defaults
    pPars->nPartSize  = 0;
    pPars->nOverSize  = 0;
    pPars->nFramesP   = 0;
    pPars->nFramesK   = 1;
    pPars->nMaxImps   = 5000;
    pPars->nMaxLevs   = 0;
    pPars->fUseImps   = 0;
    pPars->fRewrite   = 0;
    pPars->fFraiging  = 0;
    pPars->fLatchCorr = 0;
    pPars->fWriteImps = 0;
    pPars->fUse1Hot   = 0;
    pPars->fVerbose   = 0;
    pPars->TimeLimit  = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PQNFILirfletvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nPartSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nPartSize < 2 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nOverSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nOverSize < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesP = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesP < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesK = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesK <= 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxImps = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxImps <= 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxLevs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxLevs <= 0 )
                goto usage;
            break;
        case 'i':
            pPars->fUseImps ^= 1;
            break;
        case 'r':
            pPars->fRewrite ^= 1;
            break;
        case 'f':
            pPars->fFraiging ^= 1;
            break;
        case 'l':
            pPars->fLatchCorr ^= 1;
            break;
        case 'e':
            pPars->fWriteImps ^= 1;
            break;
        case 't':
            pPars->fUse1Hot ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    // get the input file name
    if ( argc == globalUtilOptind + 1 )
        pFileName = argv[globalUtilOptind];
    else
    {
        Abc_Print( -1, "File name should be given on the command line.\n" );
        return 1;
    }
    Fra_FraigInductionTest( pFileName, pPars );
    return 0;

usage:
    Abc_Print( -2, "usage: testssw [-PQNFL num] [-lrfetvh] <file>\n" );
    Abc_Print( -2, "\t         performs sequential sweep using K-step induction\n" );
    Abc_Print( -2, "\t         (outputs a file with a set of pairs of equivalent nodes)\n" );
    Abc_Print( -2, "\t-P num : max partition size (0 = no partitioning) [default = %d]\n", pPars->nPartSize );
    Abc_Print( -2, "\t-Q num : partition overlap (0 = no overlap) [default = %d]\n", pPars->nOverSize );
    Abc_Print( -2, "\t-N num : number of time frames to use as the prefix [default = %d]\n", pPars->nFramesP );
    Abc_Print( -2, "\t-F num : number of time frames for induction (1=simple) [default = %d]\n", pPars->nFramesK );
    Abc_Print( -2, "\t-L num : max number of levels to consider (0=all) [default = %d]\n", pPars->nMaxLevs );
//    Abc_Print( -2, "\t-I num : max number of implications to consider [default = %d]\n", pPars->nMaxImps );
//    Abc_Print( -2, "\t-i     : toggle using implications [default = %s]\n", pPars->fUseImps? "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle latch correspondence only [default = %s]\n", pPars->fLatchCorr? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle AIG rewriting [default = %s]\n", pPars->fRewrite? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle fraiging (combinational SAT sweeping) [default = %s]\n", pPars->fFraiging? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle writing implications as assertions [default = %s]\n", pPars->fWriteImps? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle using one-hotness conditions [default = %s]\n", pPars->fUse1Hot? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestScorr( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkTestScorr( char * pFileNameIn, char * pFileNameOut, int nStepsMax, int nBTLimit, int fNewAlgo, int fFlopOnly, int fFfNdOnly, int fVerbose );

    Abc_Ntk_t * pNtkRes;
    int c;
    int nConfMax;
    int nStepsMax;
    int fNewAlgo;
    int fFlopOnly;
    int fFfNdOnly;
    int fVerbose;
    // set defaults
    nConfMax  = 100;
    nStepsMax =  -1;
    fNewAlgo  =   0;
    fFlopOnly =   0;
    fFfNdOnly =   0;
    fVerbose  =   0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CSnfsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfMax < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nStepsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nStepsMax < 0 )
                goto usage;
            break;
        case 'n':
            fNewAlgo ^= 1;
            break;
        case 'f':
            fFlopOnly ^= 1;
            break;
        case 's':
            fFfNdOnly ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 2 )
    {
        Abc_Print( -1, "Expecting two files names on the command line.\n" );
        goto usage;
    }
    if ( fFlopOnly && fFfNdOnly )
    {
        Abc_Print( -1, "These two options (-f and -s) are incompatible.\n" );
        goto usage;
    }
    // get the new network
    pNtkRes = Abc_NtkTestScorr( argv[globalUtilOptind], argv[globalUtilOptind+1], nStepsMax, nConfMax, fNewAlgo, fFlopOnly, fFfNdOnly, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Sequential sweeping has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: testscorr [-CS num] [-nfsvh] <file_in> <file_out>\n" );
    Abc_Print( -2, "\t             outputs the list of sequential equivalences into a file\n" );
    Abc_Print( -2, "\t             (if <file_in> is in BENCH, init state file should be the same directory)\n" );
    Abc_Print( -2, "\t-C num     : limit on the number of conflicts [default = %d]\n", nConfMax );
    Abc_Print( -2, "\t-S num     : limit on refinement iterations (-1=no limit, 0=after BMC, etc) [default = %d]\n", nStepsMax );
    Abc_Print( -2, "\t-n         : toggle between \"scorr\" and \"&scorr\" [default = %s]\n", fNewAlgo? "&scorr": "scorr" );
    Abc_Print( -2, "\t-f         : toggle reporting only flop/flop equivs [default = %s]\n", fFlopOnly? "yes": "no" );
    Abc_Print( -2, "\t-s         : toggle reporting only flop/flop and flop/node equivs [default = %s]\n", fFfNdOnly? "yes": "no" );
    Abc_Print( -2, "\t-v         : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h         : print the command usage\n");
    Abc_Print( -2, "\t<file_in>  : input file with design for sequential equivalence computation\n");
    Abc_Print( -2, "\t<file_out> : output file with the list of pairs of equivalent signals\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandLcorr( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int nFramesP;
    int nConfMax;
    int nVarsMax;
    int nLimitMax;
    int fNewAlgor;
    int fVerbose;
    extern Abc_Ntk_t * Abc_NtkDarLcorr( Abc_Ntk_t * pNtk, int nFramesP, int nConfMax, int fVerbose );
    extern Abc_Ntk_t * Abc_NtkDarLcorrNew( Abc_Ntk_t * pNtk, int nVarsMax, int nConfMax, int nLimitMax, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);



    // set defaults
    nFramesP   =     0;
    nConfMax   =  1000;
    nVarsMax   =  1000;
    nLimitMax  =     0;
    fNewAlgor  =     1;
    fVerbose   =     0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PCSXnvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nFramesP = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFramesP < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfMax < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nVarsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVarsMax < 0 )
                goto usage;
            break;
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by an integer.\n" );
                goto usage;
            }
            nLimitMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLimitMax < 0 )
                goto usage;
            break;
        case 'n':
            fNewAlgor ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "The network is combinational (run \"fraig\" or \"fraig_sweep\").\n" );
        return 0;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for structrally hashed networks. Run \"st\".\n" );
        return 0;
    }

    // get the new network
    if ( fNewAlgor )
        pNtkRes = Abc_NtkDarLcorrNew( pNtk, nVarsMax, nConfMax, nLimitMax, fVerbose );
    else
        pNtkRes = Abc_NtkDarLcorr( pNtk, nFramesP, nConfMax, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Sequential sweeping has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: lcorr [-PCSX num] [-nvh]\n" );
    Abc_Print( -2, "\t         computes latch correspondence using 1-step induction\n" );
    Abc_Print( -2, "\t-P num : number of time frames to use as the prefix [default = %d]\n", nFramesP );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n", nConfMax );
    Abc_Print( -2, "\t-S num : the max number of SAT variables [default = %d]\n", nVarsMax );
    Abc_Print( -2, "\t-X num : the number of iterations of little or no improvement [default = %d]\n", nLimitMax );
    Abc_Print( -2, "\t-n     : toggle using new algorithm [default = %s]\n", fNewAlgor? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSeqCleanup( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int c;
    int fLatchConst  =   1;
    int fLatchEqual  =   1;
    int fSaveNames   =   1;
    int fUseMvSweep  =   0;
    int nFramesSymb  =   1;
    int nFramesSatur = 512;
    int fVerbose     =   0;
    int fVeryVerbose =   0;
    pNtk = Abc_FrameReadNtk(pAbc);

    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "cenmFSvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fLatchConst ^= 1;
            break;
        case 'e':
            fLatchEqual ^= 1;
            break;
        case 'n':
            fSaveNames ^= 1;
            break;
        case 'm':
            fUseMvSweep ^= 1;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFramesSymb = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFramesSymb < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nFramesSatur = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFramesSatur < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for structrally hashed networks.\n" );
        return 1;
    }
    if ( !Abc_NtkLatchNum(pNtk) )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    // modify the current network
    pNtkRes = Abc_NtkDarLatchSweep( pNtk, fLatchConst, fLatchEqual, fSaveNames, fUseMvSweep, nFramesSymb, nFramesSatur, fVerbose, fVeryVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Sequential cleanup has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: scleanup [-cenmFSvwh]\n" );
    Abc_Print( -2, "\t         performs sequential cleanup of the current network\n" );
    Abc_Print( -2, "\t         by removing nodes and latches that do not feed into POs\n" );
    Abc_Print( -2, "\t-c     : sweep stuck-at latches detected by ternary simulation [default = %s]\n", fLatchConst? "yes": "no" );
    Abc_Print( -2, "\t-e     : merge equal latches (same data inputs and init states) [default = %s]\n", fLatchEqual? "yes": "no" );
    Abc_Print( -2, "\t-n     : toggle preserving latch names [default = %s]\n", fSaveNames? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle using hybrid ternary/symbolic simulation [default = %s]\n", fUseMvSweep? "yes": "no" );
    Abc_Print( -2, "\t-F num : the number of first frames simulated symbolically [default = %d]\n", nFramesSymb );
    Abc_Print( -2, "\t-S num : the number of frames when symbolic saturation begins [default = %d]\n", nFramesSatur );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle very verbose output [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCycle( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int nFrames;
    int fUseXval;
    int fVerbose;
    extern void Abc_NtkCycleInitState( Abc_Ntk_t * pNtk, int nFrames, int fUseXval, int fVerbose );
    extern void Abc_NtkCycleInitStateSop( Abc_Ntk_t * pNtk, int nFrames, int fVerbose );
    // set defaults
    nFrames    = 100;
    fUseXval   =   0;
    fVerbose   =   0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fxvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'x':
            fUseXval ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) && !Abc_NtkIsSopLogic(pNtk) )
    {
        Abc_Print( -1, "Only works for strashed networks or logic SOP networks.\n" );
        return 1;
    }
    if ( !Abc_NtkLatchNum(pNtk) )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( fUseXval && !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "X-valued simulation only works for AIGs. Run \"strash\".\n" );
        return 0;
    }
    if ( fUseXval )
        Abc_NtkCycleInitState( pNtk, nFrames, 1, fVerbose );
    else if ( Abc_NtkIsStrash(pNtk) )
        Abc_NtkCycleInitState( pNtk, nFrames, 0, fVerbose );
    else
        Abc_NtkCycleInitStateSop( pNtk, nFrames, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: cycle [-F num] [-xvh]\n" );
    Abc_Print( -2, "\t         cycles sequential circuit for the given number of timeframes\n" );
    Abc_Print( -2, "\t         to derive a new initial state (which may be on the envelope)\n" );
    Abc_Print( -2, "\t-F num : the number of frames to simulate [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-x     : use x-valued primary inputs [default = %s]\n", fUseXval? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandXsim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int nFrames;
    int fXInputs;
    int fXState;
    int fVerbose;
    extern void Abc_NtkXValueSimulate( Abc_Ntk_t * pNtk, int nFrames, int fXInputs, int fXState, int fVerbose );
    // set defaults
    nFrames    = 10;
    fXInputs   =  0;
    fXState    =  0;
    fVerbose   =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fisvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'i':
            fXInputs ^= 1;
            break;
        case 's':
            fXState ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for strashed networks.\n" );
        return 1;
    }
    if ( !Abc_NtkLatchNum(pNtk) )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    Abc_NtkXValueSimulate( pNtk, nFrames, fXInputs, fXState, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: xsim [-F num] [-isvh]\n" );
    Abc_Print( -2, "\t         performs X-valued simulation of the AIG\n" );
    Abc_Print( -2, "\t-F num : the number of frames to simulate [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-i     : toggle X-valued representation of inputs [default = %s]\n", fXInputs? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle X-valued representation of state [default = %s]\n", fXState? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int fNew;
    int fComb;
    int nFrames;
    int nWords;
    int TimeOut;
    int fMiter;
    int fVerbose;
    char * pFileSim;
    char * pLogFileName = NULL;
    extern int Abc_NtkDarSeqSim( Abc_Ntk_t * pNtk, int nFrames, int nWords, int TimeOut, int fNew, int fMiter, int fVerbose, char * pFileSim );
    // set defaults
    fNew       =  0;
    fComb      =  0;
    nFrames    = 32;
    nWords     =  8;
    TimeOut    = 30;
    fMiter     =  1;
    fVerbose   =  0;
    pFileSim   = NULL;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FWTALnmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeOut < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a file name.\n" );
                goto usage;
            }
            pFileSim = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'n':
            fNew ^= 1;
            break;
        case 'm':
            fMiter ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for strashed networks.\n" );
        return 1;
    }
    if ( pFileSim != NULL && Abc_NtkLatchNum(pNtk) )
    {
        Abc_Print( -1, "Currently simulation with user-specified patterns works only for comb miters.\n" );
        return 1;
    }
    ABC_FREE( pNtk->pSeqModel );
    pAbc->Status = Abc_NtkDarSeqSim( pNtk, nFrames, nWords, TimeOut, fNew, fMiter, fVerbose, pFileSim );
    Abc_FrameReplaceCex( pAbc, &pNtk->pSeqModel );
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "sim" );
    return 0;

usage:
    Abc_Print( -2, "usage: sim [-FWT num] [-AL file] [-nmvh]\n" );
    Abc_Print( -2, "\t          performs random simulation of the sequential miter\n" );
    Abc_Print( -2, "\t-F num  : the number of frames to simulate [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-W num  : the number of words to simulate [default = %d]\n", nWords );
    Abc_Print( -2, "\t-T num  : approximate runtime limit in seconds [default = %d]\n", TimeOut );
    Abc_Print( -2, "\t-A file : text file name with user's patterns [default = random simulation]\n" );
    Abc_Print( -2, "\t          (patterns are listed, one per line, as sequences of 0s and 1s)\n" );
    Abc_Print( -2, "\t-L file : the log file name [default = %s]\n",  pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-n      : toggle new vs. old implementation [default = %s]\n", fNew? "new": "old" );
    Abc_Print( -2, "\t-m      : toggle miter vs. any circuit [default = %s]\n", fMiter? "miter": "circuit" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSim3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_NtkDarSeqSim3( Abc_Ntk_t * pNtk, Ssw_RarPars_t * pPars );
    Ssw_RarPars_t Pars, * pPars = &Pars;
    Abc_Ntk_t * pNtkRes, * pNtk = Abc_FrameReadNtk(pAbc);
    Vec_Ptr_t * vSeqModelVec;
    char * pLogFileName = NULL;
    int c;
    Ssw_RarSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FWBRSNTGLadivzh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFrames < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBinSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBinSize < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRounds < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRestart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRestart < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRandSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRandSeed < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeOut < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeOutGap = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeOutGap < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'a':
            pPars->fSolveAll ^= 1;
            break;
        case 'd':
            pPars->fDropSatOuts ^= 1;
            break;
        case 'i':
            pPars->fSetLastState ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'z':
            pPars->fNotVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for strashed networks.\n" );
        return 1;
    }
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( -1, "Only works for sequential networks.\n" );
        return 1;
    }
    ABC_FREE( pNtk->pSeqModel );
    pAbc->Status = Abc_NtkDarSeqSim3( pNtk, pPars );
    Abc_FrameReplaceCex( pAbc, &pNtk->pSeqModel );
    vSeqModelVec = pNtk->vSeqModelVec;  pNtk->vSeqModelVec = NULL;
    if ( pPars->fSetLastState && pAbc->pNtkCur->pData )
    {
        Abc_Obj_t * pObj;
        Vec_Int_t * vInit = (Vec_Int_t *)pAbc->pNtkCur->pData;
        pAbc->pNtkCur->pData = NULL;
        Abc_NtkForEachLatch( pAbc->pNtkCur, pObj, c )
            if ( Vec_IntEntry(vInit, c) )
                Abc_LatchSetInit1( pObj );
        Vec_IntFree( vInit );
        pNtkRes = Abc_NtkRestrashZero( pAbc->pNtkCur, 0 );
        if ( pNtkRes == NULL )
        {
            Abc_Print( -1, "Removing SAT outputs has failed.\n" );
            return 1;
        }
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
        pNtk = Abc_FrameReadNtk(pAbc);
    }
    if ( pPars->fSolveAll && pPars->fDropSatOuts )
    {
        if ( vSeqModelVec == NULL )
            Abc_Print( 1,"The array of counter-examples is not available.\n" );
        else if ( Vec_PtrSize(vSeqModelVec) != Abc_NtkPoNum(pNtk) )
            Abc_Print( 1,"The array size does not match the number of outputs.\n" );
        else
        {
            extern void Abc_NtkDropSatOutputs( Abc_Ntk_t * pNtk, Vec_Ptr_t * vCexes, int fVerbose );
            Abc_NtkDropSatOutputs( pNtk, vSeqModelVec, pPars->fVerbose );
            pNtkRes = Abc_NtkDarLatchSweep( pNtk, 1, 1, 1, 0, -1, -1, 0, 0 );
            if ( pNtkRes == NULL )
            {
                Abc_Print( -1, "Removing SAT outputs has failed.\n" );
                return 1;
            }
            Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
        }
    }
    if ( vSeqModelVec )
    {
        Abc_FrameReplaceCexVec( pAbc, &vSeqModelVec );
        pAbc->nFrames = -1;
    }
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "sim3" );
    return 0;

usage:
    Abc_Print( -2, "usage: sim3 [-FWBRSNTG num] [-L file] [-advzh]\n" );
    Abc_Print( -2, "\t         performs random simulation of the sequential miter\n" );
    Abc_Print( -2, "\t-F num : the number of frames to simulate [default = %d]\n",                         pPars->nFrames );
    Abc_Print( -2, "\t-W num : the number of words to simulate [default = %d]\n",                          pPars->nWords );
    Abc_Print( -2, "\t-B num : the number of flops in one bin [default = %d]\n",                           pPars->nBinSize );
    Abc_Print( -2, "\t-R num : the number of simulation rounds [default = %d]\n",                          pPars->nRounds );
    Abc_Print( -2, "\t-S num : the number of rounds before a restart [default = %d]\n",                    pPars->nRestart );
    Abc_Print( -2, "\t-N num : random number seed (1 <= num <= 1000) [default = %d]\n",                    pPars->nRandSeed );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n",                     pPars->TimeOut );
    Abc_Print( -2, "\t-G num : approximate runtime gap in seconds since the last CEX [default = %d]\n",    pPars->TimeOutGap );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n",                                          pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-a     : toggle solving all outputs (do not stop when one is SAT) [default = %s]\n", pPars->fSolveAll?    "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle dropping (replacing by 0) SAT outputs [default = %s]\n",             pPars->fDropSatOuts? "yes": "no" );
    Abc_Print( -2, "\t-i     : toggle changing init state to a last rare state [default = %s]\n",          pPars->fVerbose?     "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",                      pPars->fVerbose?     "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle suppressing report about solved outputs [default = %s]\n",           pPars->fNotVerbose?  "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDarPhase( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int nFrames, nPref;
    int fIgnore;
    int fPrint;
    int fUpdateCex;
    int c, fVerbose;
    extern Abc_Ntk_t * Abc_NtkPhaseAbstract( Abc_Ntk_t * pNtk, int nFrames, int nPref, int fIgnore, int fPrint, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nFrames     = 0;
    nPref       = 0;
    fIgnore     = 0;
    fPrint      = 0;
    fUpdateCex  = 0;
    fVerbose    = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FPipcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nPref = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPref < 0 )
                goto usage;
            break;
        case 'i':
            fIgnore ^= 1;
            break;
        case 'p':
            fPrint ^= 1;
            break;
        case 'c':
            fUpdateCex ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for structrally hashed networks.\n" );
        return 1;
    }
    if ( fUpdateCex )
    {
        Abc_Cex_t * pCexNew;
        if ( pAbc->pCex == NULL )
        {
            Abc_Print( -1, "Counter-example is not available.\n" );
            return 1;
        }
        if ( pAbc->pCex->nPis % Abc_NtkPiNum(pNtk) != 0 )
        {
            Abc_Print( -1, "PI count of the CEX is not a multiple of PI count of the current AIG.\n" );
            return 1;
        }
        pCexNew = Abc_CexTransformPhase( pAbc->pCex, Abc_NtkPiNum(pNtk), Abc_NtkPoNum(pNtk), Abc_NtkLatchNum(pNtk) );
        {
            Aig_Man_t * pAig = Abc_NtkToDar( pNtk, 0, 1 );
            Gia_Man_t * pGia = Gia_ManFromAig( pAig );
            int iPo = Gia_ManSetFailedPoCex( pGia, pCexNew );
            Gia_ManStop( pGia );
            Aig_ManStop( pAig );
            if ( iPo == -1 )
            {
                Abc_Print( -1, "The counter-example does not fail any of the outputs of the original AIG.\n" );
                return 1;
            }
        }
        Abc_FrameReplaceCex( pAbc, &pCexNew );
        return 0;
    }
    if ( !Abc_NtkLatchNum(pNtk) )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( fPrint )
    {
        Abc_NtkPhaseAbstract( pNtk, 0, nPref, fIgnore, 1, fVerbose );
        return 0;
    }
    // modify the current network
    pNtkRes = Abc_NtkPhaseAbstract( pNtk, nFrames, nPref, fIgnore, 0, fVerbose );
    if ( pNtkRes == NULL )
    {
//        Abc_Print( -1, "Phase abstraction has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: phase [-FP <num>] [-ipcvh]\n" );
    Abc_Print( -2, "\t         performs sequential cleanup of the current network\n" );
    Abc_Print( -2, "\t         by removing nodes and latches that do not feed into POs\n" );
    Abc_Print( -2, "\t-F num : the number of frames to abstract [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-P num : the number of prefix frames to skip [default = %d]\n", nPref );
    Abc_Print( -2, "\t-i     : toggle ignoring the initial state [default = %s]\n", fIgnore? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle printing statistics about generators [default = %s]\n", fPrint? "yes": "no" );
    Abc_Print( -2, "\t-c     : update the current CEX derived for a new AIG after \"phase\"\n" );
    Abc_Print( -2, "\t         to match the current AIG (the one before \"phase\") [default = %s]\n", fUpdateCex? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSynch( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtkRes, * pNtk1, * pNtk2, * pNtk;
    char ** pArgvNew;
    int nArgcNew;
    int fDelete1, fDelete2;
    int c;
    int nWords;
    int fVerbose;

    extern Abc_Ntk_t * Abc_NtkDarSynch( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nWords, int fVerbose );
    extern Abc_Ntk_t * Abc_NtkDarSynchOne( Abc_Ntk_t * pNtk, int nWords, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nWords   =  32;
    fVerbose =   1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Wvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords <= 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew == 0 )
    {
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Empty network.\n" );
            return 1;
        }
        pNtkRes = Abc_NtkDarSynchOne( pNtk, nWords, fVerbose );
    }
    else
    {
        if ( !Abc_NtkPrepareTwoNtks( stdout, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2, 1 ) )
            return 1;
        if ( Abc_NtkLatchNum(pNtk1) == 0 || Abc_NtkLatchNum(pNtk2) == 0 )
        {
            if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
            if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
            Abc_Print( -1, "The network has no latches..\n" );
            return 0;
        }

        // modify the current network
        pNtkRes = Abc_NtkDarSynch( pNtk1, pNtk2, nWords, fVerbose );
        if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
        if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
    }
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Synchronization has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: synch [-W <num>] [-vh] <file1> <file2>\n" );
    Abc_Print( -2, "\t         derives and applies synchronization sequence\n" );
    Abc_Print( -2, "\t-W num : the number of simulation words [default = %d]\n", nWords );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tfile1  : (optional) the file with the first design\n");
    Abc_Print( -2, "\tfile2  : (optional) the file with the second design\n\n");
    Abc_Print( -2, "\t         If no designs are given on the command line,\n" );
    Abc_Print( -2, "\t         assumes the current network has no initial state,\n" );
    Abc_Print( -2, "\t         derives synchronization sequence and applies it.\n\n" );
    Abc_Print( -2, "\t         If two designs are given on the command line\n" );
    Abc_Print( -2, "\t         assumes both of them have no initial state,\n" );
    Abc_Print( -2, "\t         derives sequences for both designs, synchorinizes\n" );
    Abc_Print( -2, "\t         them, and creates SEC miter comparing two designs.\n\n" );
    Abc_Print( -2, "\t         If only one design is given on the command line,\n" );
    Abc_Print( -2, "\t         considers the second design to be the current network,\n" );
    Abc_Print( -2, "\t         and derives SEC miter for them, as described above.\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandClockGate( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Cgt_Par_t Pars, * pPars = &Pars;
    Abc_Ntk_t * pNtkRes, * pNtk, * pNtkCare;
    int c;

    extern Abc_Ntk_t * Abc_NtkDarClockGate( Abc_Ntk_t * pNtk, Abc_Ntk_t * pCare, Cgt_Par_t * pPars );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Cgt_SetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "LNDCVKavwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLevelMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLevelMax <= 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nCandMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCandMax <= 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nOdcMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nOdcMax <= 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nConfMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nConfMax <= 0 )
                goto usage;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nVarsMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVarsMin <= 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFlopsMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFlopsMin <= 0 )
                goto usage;
            break;
        case 'a':
            pPars->fAreaOnly ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }

    if ( argc == globalUtilOptind + 1 )
    {
        pNtkCare = Io_Read( argv[globalUtilOptind], Io_ReadFileType(argv[globalUtilOptind]), 1, 0 );
        if ( pNtkCare == NULL )
        {
            Abc_Print( -1, "Reading care network has failed.\n" );
            return 1;
        }
        // modify the current network
        pNtkRes = Abc_NtkDarClockGate( pNtk, pNtkCare, pPars );
        Abc_NtkDelete( pNtkCare );
    }
    else if ( argc == globalUtilOptind )
    {
        pNtkRes = Abc_NtkDarClockGate( pNtk, NULL, pPars );
    }
    else
    {
        Abc_Print( -1, "Wrong number of arguments.\n" );
        return 0;
    }
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Clock gating has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: clockgate [-LNDCVK <num>] [-avwh] <file>\n" );
    Abc_Print( -2, "\t         sequential clock gating with observability don't-cares\n" );
    Abc_Print( -2, "\t-L num : max level number of a clock gate [default = %d]\n", pPars->nLevelMax );
    Abc_Print( -2, "\t-N num : max number of candidates for a flop [default = %d]\n", pPars->nCandMax );
    Abc_Print( -2, "\t-D num : max number of ODC levels to consider [default = %d]\n", pPars->nOdcMax );
    Abc_Print( -2, "\t-C num : max number of conflicts at a node [default = %d]\n", pPars->nConfMax );
    Abc_Print( -2, "\t-V num : min number of vars to recycle SAT solver [default = %d]\n", pPars->nVarsMin );
    Abc_Print( -2, "\t-K num : min number of flops to recycle SAT solver [default = %d]\n", pPars->nFlopsMin );
    Abc_Print( -2, "\t-a     : toggle minimizing area-only [default = %s]\n", pPars->fAreaOnly? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle even more detailed output [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tfile   : (optional) constraints for primary inputs and register outputs\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandExtWin( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtkRes, * pNtk;
    int c;
    int nObjId;
    int nDist;
    int fVerbose;

    extern Abc_Ntk_t * Abc_NtkDarExtWin( Abc_Ntk_t * pNtk, int nObjId, int nDist, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nObjId   = -1;
    nDist    =  5;
    fVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NDvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nObjId = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nObjId <= 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nDist = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDist <= 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for structrally hashed networks.\n" );
        return 1;
    }

    if ( argc != globalUtilOptind )
    {
        Abc_Print( -1, "Not enough command-line arguments.\n" );
        return 1;
    }
    // modify the current network
    pNtkRes = Abc_NtkDarExtWin( pNtk, nObjId, nDist, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Extracting sequential window has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: extwin [-ND <num>] [-vh]\n" );
    Abc_Print( -2, "\t         extracts sequential window from the AIG\n" );
    Abc_Print( -2, "\t-N num : the ID of the object to use as the center [default = %d]\n", nObjId );
    Abc_Print( -2, "\t-D num : the \"radius\" of the window [default = %d]\n", nDist );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandInsWin( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtkRes, * pNtk, * pNtkCare;
    int c;
    int nObjId;
    int nDist;
    int fVerbose;

    extern Abc_Ntk_t * Abc_NtkDarInsWin( Abc_Ntk_t * pNtk, Abc_Ntk_t * pWnd, int nObjId, int nDist, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nObjId   = -1;
    nDist    =  5;
    fVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NDvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nObjId = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nObjId <= 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nDist = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDist <= 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Only works for structrally hashed networks.\n" );
        return 1;
    }

    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Not enough command-line arguments.\n" );
        return 1;
    }
    pNtkCare = Io_Read( argv[globalUtilOptind], Io_ReadFileType(argv[globalUtilOptind]), 1, 0 );
    if ( pNtkCare == NULL )
    {
        Abc_Print( -1, "Reading care network has failed.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtkCare) )
    {
        Abc_Ntk_t * pNtkTemp;
        pNtkCare = Abc_NtkStrash( pNtkTemp = pNtkCare, 0, 1, 0 );
        Abc_NtkDelete( pNtkTemp );
    }
    // modify the current network
    pNtkRes = Abc_NtkDarInsWin( pNtk, pNtkCare, nObjId, nDist, fVerbose );
    Abc_NtkDelete( pNtkCare );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Inserting sequential window has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: inswin [-ND <num>] [-vh] <file>\n" );
    Abc_Print( -2, "\t         inserts sequential window into the AIG\n" );
    Abc_Print( -2, "\t-N num : the ID of the object to use as the center [default = %d]\n", nObjId );
    Abc_Print( -2, "\t-D num : the \"radius\" of the window [default = %d]\n", nDist );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tfile   : file with the AIG to be inserted\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSymFun( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Ntk_SymFunGenerate( int nVars, int fVerbose );
    word * pFun = NULL;
    char * pStr,  * pTruth, * pCommand;
    int c, k, nVars = -1, fCounter = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ncvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a file name.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'c':
            fCounter ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }
    if ( fCounter )
    {
        if ( nVars == -1 )
        {
            printf( "The number of variables should be specified on the command line using \"-N <num>\".\n" );
            return 1;
        }
        extern Vec_Ptr_t * Abc_SopGenerateCounters( int nVars );
        Vec_Ptr_t * vSops = Abc_SopGenerateCounters( nVars );
        Abc_Ntk_t * pNtk = Abc_NtkCreateWithNodes( vSops );
        Vec_PtrFreeFree( vSops );
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtk );
        Abc_FrameClearVerifStatus( pAbc );
        return 0;
    }
    if ( nVars != -1 )
    {
        if ( nVars < 1 || nVars > 16 )
        {
            printf( "Cannot generate functions for less than 1 and more than %d variables.\n", nVars );
            return 1;
        }
        Ntk_SymFunGenerate( nVars, fVerbose );
        return 0;
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Not enough command-line arguments.\n" );
        return 1;
    }
    // make sure the string is composed of N+1 zeros and ones
    pStr = argv[globalUtilOptind];
    nVars = strlen(pStr) - 1;
    for ( k = 0; k <= nVars; k++ )
        if ( pStr[k] != '0' && pStr[k] != '1' )
            break;
    if ( k <= nVars )
    {
        Abc_Print( -1, "The string should be composed of zeros and ones.\n" );
        return 1;
    }
    // generate and print one function
    pFun = Abc_TtSymFunGenerate( pStr, nVars );
    pTruth = ABC_CALLOC( char, nVars > 2 ? (1 << (nVars-2)) + 1 : 2 );
    Extra_PrintHexadecimalString( pTruth, (unsigned *)pFun, nVars );
    ABC_FREE( pFun );
    if ( fVerbose )
    {
        if ( nVars > 6 )
            printf( "Generated truth table of the %d-variable function and set it as the current network.\n", nVars );
        else
            printf( "Generated truth table of the %d-variable function (%s) and set it as the current network\n", nVars, pTruth );
    }
    else if ( nVars <= 8 )
        printf( "%s\n", pTruth );
    // read the truth table to be the current network in ABC
    pCommand = ABC_CALLOC( char, strlen(pTruth) + 100 );
    sprintf( pCommand, "read_truth %s", pTruth );
    Cmd_CommandExecute( pAbc, pCommand );
    ABC_FREE( pCommand );
    ABC_FREE( pTruth );
    return 0;

usage:
    Abc_Print( -2, "usage: symfun [-N num] [-cvh] <ones>\n" );
    Abc_Print( -2, "\t           generated a single-output symmetric function\n" );
    Abc_Print( -2, "\t-N <num> : prints truth tables of all N-var symmetric functions [default = not used]\n" );
    Abc_Print( -2, "\t-c       : toggle generating a counter [default = %s]\n", fCounter? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t<ones>   : the string of N+1 zeros and ones, where N is the number of variables\n" );
    Abc_Print( -2, "\t           For example, to get 3-input NAND-gate, use \"symfun 1000\".\n" );
    Abc_Print( -2, "\t           To get 5-input majority gate, use \"symfun 000111\".\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandATMap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkATMap( int nXVars, int nYVars, int nAdder, char ** pGPC, int nGPCs, int fReturn, int fVerbose );
    int c, nXVars = -1, nYVars = -1, nAdder = 2, fReturn = 0, fVerbose = 1;
    char * pGPCs0[1] = { (char*)"3:11:1" };
    char ** pGPCs = NULL; int nGPCs = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "XYArvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by a file name.\n" );
                goto usage;
            }
            nXVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'Y':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Y\" should be followed by a file name.\n" );
                goto usage;
            }
            nYVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a file name.\n" );
                goto usage;
            }
            nAdder = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'r':
            fReturn ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( nAdder < 2 || nAdder > 4 )
    {
        printf( "The terminal adder should have 2, 3, or 4 bits.\n" );
        return 0;
    }
    pGPCs = argv + globalUtilOptind;
    nGPCs = argc - globalUtilOptind;
    if ( nGPCs == 0 )
    {
        printf( "GPCs are not listed on the command line. The simplest GPC (full adder) will be used.\n" );
        pGPCs = pGPCs0;
        nGPCs = 1;
    }
    Abc_NtkATMap( nXVars, nYVars, nAdder, pGPCs, nGPCs, fReturn, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: atmap [-XYA num] [-G str] [-rv] <GPC(0)> <GPC(1)> ... <GPC(N-1)>\n" );
    Abc_Print( -2, "\t           maps rectangular adder tree using GPCs\n" );
    Abc_Print( -2, "\t-X <num> : the number of different ranks [default = %d]\n", nXVars );
    Abc_Print( -2, "\t-Y <num> : the number of bits of each rank [default = %d]\n", nYVars );
    Abc_Print( -2, "\t-A <num> : the number of arguments in the terminal adder [default = %d]\n", nAdder );
    Abc_Print( -2, "\t-r       : return to the first GPC after each step [default = %s]\n", fReturn? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n\n");
    Abc_Print( -2, "\t           For example, to map an adder tree with dimensions 4 x 648 using GPC(6,6,6,6:1,2,2,2,2,1)\n" );
    Abc_Print( -2, "\t           having LUT efficiency E = 1.75, use the command line \"atmap -X 4 -Y 648 6666:122221:8 3:11:1\"\n" );
    Abc_Print( -2, "\t           where 8 is the number of 6-LUTs needed to implement the GPC and E = (24-10)/8 = 1.75.\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPermute( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkRestrashRandom( Abc_Ntk_t * pNtk );
    extern void Abc_NtkPermutePiUsingFanout( Abc_Ntk_t * pNtk );
    Abc_Ntk_t * pNtk = pAbc->pNtkCur, * pNtkRes = NULL;
    char * pFlopPermFile = NULL, * pInPermFile = NULL, * pOutPermFile = NULL, * pMapPermFile = NULL;
    int fInputs = 1;
    int fOutputs = 1;
    int fFlops = 1;
    int fNodes = 1;
    int fFanout = 0;
    int Seed = -1;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "SIOFMiofnxh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a file name.\n" );
                goto usage;
            }
            pInPermFile = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by a file name.\n" );
                goto usage;
            }
            pOutPermFile = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a file name.\n" );
                goto usage;
            }
            pFlopPermFile = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a file name.\n" );
                goto usage;
            }
            pMapPermFile = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'i':
            fInputs ^= 1;
            break;
        case 'o':
            fOutputs ^= 1;
            break;
        case 'f':
            fFlops ^= 1;
            break;
        case 'n':
            fNodes ^= 1;
            break;
        case 'x':
            fFanout ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }
    if ( Seed >= 0 )
        srand( (unsigned)Seed );
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( fFanout )
    {
        if ( Abc_NtkLatchNum(pNtk) )
        {
            Abc_Print( -1, "Currently \"permute -x\" works only for combinational networks.\n" );
            return 1;
        }
        Abc_NtkPermutePiUsingFanout( pNtk );
        return 0;
    }
    if ( fNodes && !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "To permute nodes, the network should be structurally hashed.\n" );
        return 1;
    }
    if ( fNodes ) {
        pNtkRes = Abc_NtkRestrashRandom( pNtk );
        if ( pMapPermFile ) {
            if ( Abc_NtkObjNumMax(pNtkRes) != Abc_NtkObjNumMax(pNtk) ) {
                printf( "Cannot output 1-to-1 node mapping because the networks have different node counts.\n" );
                return 1;
            }
            FILE * pFile = fopen( pMapPermFile, "wb" );
            if ( pFile == NULL ) {
                printf( "Cannot open output file \"%s\" to dump the permutation of internal nodes.\n", pMapPermFile );
                return 1;
            }
            Abc_Obj_t * pObj; int i, iNode, Counter = 0;
            int StartOld = Abc_NtkObjNumMax(pNtk)    - Abc_NtkNodeNum(pNtk);
            int StartNew = Abc_NtkObjNumMax(pNtkRes) - Abc_NtkNodeNum(pNtkRes);
            Abc_NtkForEachNode( pNtk, pObj, i ) {
                if ( Counter++ != i - StartOld ) {
                    printf( "Cannot output 1-to-1 node mapping because node order is non-standard.\n" );
                    fclose( pFile );
                    return 1;
                }
                iNode = pObj->pCopy->Id - StartNew;
                if ( iNode < 0 || iNode >= Abc_NtkNodeNum(pNtkRes) ) {
                    printf( "Cannot output 1-to-1 node mapping because node IDs are out of order.\n" );
                    fclose( pFile );
                    return 1;
                }
                fprintf( pFile, "%d ", iNode+1 );
            }
            fprintf( pFile, "\n" );
            fclose( pFile );
            printf( "Finished dumping the permutation of internal nodes into file \"%s\".\n", pMapPermFile );
        }
    }
    else
        pNtkRes = Abc_NtkDup( pNtk );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command \"permute\" has failed.\n" );
        return 1;
    }
    Abc_NtkPermute( pNtkRes, fInputs, fOutputs, fFlops, pInPermFile, pOutPermFile, pFlopPermFile );
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: permute [-S num] [-iofnxh] [-I filename] [-O filename] [-F filename] [-M filename]\n" );
    Abc_Print( -2, "\t                performs random permutation of inputs/outputs/flops\n" );
    Abc_Print( -2, "\t-S num        : the random seed to generate permutations (0 <= num < INT_MAX) [default = %d]\n", Seed );
    Abc_Print( -2, "\t-i            : toggle permuting primary inputs [default = %s]\n", fInputs? "yes": "no" );
    Abc_Print( -2, "\t-o            : toggle permuting primary outputs [default = %s]\n", fOutputs? "yes": "no" );
    Abc_Print( -2, "\t-f            : toggle permuting flip-flops [default = %s]\n", fFlops? "yes": "no" );
    Abc_Print( -2, "\t-n            : toggle deriving new topological ordering of nodes [default = %s]\n", fNodes? "yes": "no" );
    Abc_Print( -2, "\t-x            : toggle permuting inputs based on their fanout count [default = %s]\n", fFanout? "yes": "no" );
    Abc_Print( -2, "\t-h            : print the command usage\n");
    Abc_Print( -2, "\t-I <filename> : (optional) file with the input permutation\n" );
    Abc_Print( -2, "\t-O <filename> : (optional) file with the output permutation\n" );
    Abc_Print( -2, "\t-F <filename> : (optional) file with the flop permutation\n" );
    Abc_Print( -2, "\t-M <filename> : (optional) file with the resulting permutation of internal nodes\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandUnpermute( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = pAbc->pNtkCur, * pNtkRes = NULL;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    pNtkRes = Abc_NtkDup( pNtk );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Command \"unpermute\" has failed.\n" );
        return 1;
    }
    Abc_NtkUnpermute( pNtkRes );
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: unpermute [-h]\n" );
    Abc_Print( -2, "\t        restores inputs/outputs/flops before the last permutation\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCubeEnum( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_EnumerateCubeStates();
    extern void Abc_EnumerateCubeStatesZdd();
    int c, fZddAlgo = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "zvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'z':
            fZddAlgo ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }
    if ( fZddAlgo )
        Abc_EnumerateCubeStatesZdd();
    else
        Abc_EnumerateCubeStates();
    return 0;

usage:
    Abc_Print( -2, "usage: cubeenum [-vh]\n" );
    Abc_Print( -2, "\t         enumerates reachable states of 2x2x2 cube\n" );
    Abc_Print( -2, "\t         (http://en.wikipedia.org/wiki/Pocket_Cube)\n" );
    Abc_Print( -2, "\t-z     : toggle using ZDD-based algorithm [default = %s]\n", fZddAlgo? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPathEnum( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_EnumerateFrontierTest( int nSize );
    int c, nSize = 4, fZddAlgo = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nzvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSize < 0 )
                goto usage;
            break;
        case 'z':
            fZddAlgo ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }
    Abc_EnumerateFrontierTest( nSize );
    return 0;

usage:
    Abc_Print( -2, "usage: pathenum [-N num] [-vh]\n" );
    Abc_Print( -2, "\t         enumerates self-avoiding paths on the NxN grid\n" );
    Abc_Print( -2, "\t-N num : the size of the grid to consider [default = %d]\n", nSize );
//    Abc_Print( -2, "\t-z     : toggle using ZDD-based algorithm [default = %s]\n", fZddAlgo? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFunEnum( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Dtt_EnumerateLf( int nVars, int nNodeMax, int fDelay, int fMulti, int fVerbose, char* pFileName );
    extern void Dau_FunctionEnum( int nInputs, int nVars, int nNodeMax, int fUseTwo, int fReduce, int fVerbose );
    extern Gia_Man_t * Dau_ConstructAigFromFile( char * pFileName );
    int c, nInputs = 4, nVars = 4, nNodeMax = 32, fUseTwo = 0, fReduce = 0, fSimple = 0, fDelay = 0, fMulti = 0, fDump = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "SIMtrldmpvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nInputs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nInputs < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nNodeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodeMax < 0 )
                goto usage;
            break;
        case 't':
            fUseTwo ^= 1;
            break;
        case 'r':
            fReduce ^= 1;
            break;
        case 'l':
            fSimple ^= 1;
            break;
        case 'd':
            fDelay ^= 1;
            break;
        case 'm':
            fMulti ^= 1;
            break;
        case 'p':
            fDump ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }
    if ( fSimple || fDelay )
    {
        char Buffer[100];
        if ( nVars < 3 || nVars > 5 )
        {
            Abc_Print( -1, "The number of inputs should be 3 <= I <= 5.\n" );
            goto usage;
        }
        sprintf( Buffer, "Lflib%d.txt", nVars );
        Dtt_EnumerateLf( nVars, nNodeMax, fDelay, fMulti, fVerbose, fDump?Buffer:NULL );
        if ( fDump )
        {
            Gia_Man_t * pTemp;
            pTemp = Dau_ConstructAigFromFile( Buffer );
            Abc_FrameUpdateGia( pAbc, pTemp );
            Gia_DumpAiger( pTemp, "Lflib", nVars, 1 );
        }
    }
    else
    {
        if ( nVars < 2 || nVars > 6 )
        {
            Abc_Print( -1, "The number of inputs should be 2 <= I <= 6.\n" );
            goto usage;
        }
        if ( nInputs < nVars || nInputs > 6 )
        {
            Abc_Print( -1, "The intermediate support size should be I <= S <= 6.\n" );
            goto usage;
        }
        Dau_FunctionEnum( nInputs, nVars, nNodeMax, fUseTwo, fReduce, fVerbose );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: funenum [-SIM num] [-trldmvph]\n" );
    Abc_Print( -2, "\t         enumerates minimum 2-input-gate implementations\n" );
    Abc_Print( -2, "\t-S num : the maximum intermediate support size [default = %d]\n",     nInputs );
    Abc_Print( -2, "\t-I num : the number of inputs of Boolean functions [default = %d]\n", nVars );
    Abc_Print( -2, "\t-M num : the maximum number of 2-input gates [default = %d]\n",       nNodeMax );
    Abc_Print( -2, "\t-t     : toggle adding combination of two gates [default = %s]\n",    fUseTwo?  "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle reducing the last level [default = %s]\n",            fReduce?  "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle generating L(f) rather than C(f) [default = %s]\n",   fSimple?  "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle generating D(f) rather than C(f) [default = %s]\n",   fDelay?   "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle generating multiplicity statistics [default = %s]\n", fMulti?   "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n",                     fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle dumping result library (formula and AIG) [default = %s]\n",fDump?"yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}



/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char Buffer[16];
    Abc_Ntk_t * pNtk, * pNtk1, * pNtk2;
    int fDelete1, fDelete2;
    char ** pArgvNew;
    int nArgcNew;
    int c;
    int fSat;
    int fVerbose;
    int nSeconds;
    int nPartSize;
    int nConfLimit;
    int nInsLimit;
    int fPartition;
    int fIgnoreNames;

    extern void Abc_NtkCecSat( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nConfLimit, int nInsLimit );
    extern void Abc_NtkCecFraig( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nSeconds, int fVerbose );
    extern void Abc_NtkCecFraigPart( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nSeconds, int nPartSize, int fVerbose );
    extern void Abc_NtkCecFraigPartAuto( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nSeconds, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fSat     =  0;
    fVerbose =  0;
    nSeconds = 20;
    nPartSize  = 0;
    nConfLimit = 10000;
    nInsLimit  = 0;
    fPartition = 0;
    fIgnoreNames = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "TCIPpsnvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nSeconds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSeconds < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nInsLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nInsLimit < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nPartSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPartSize < 0 )
                goto usage;
            break;
        case 'p':
            fPartition ^= 1;
            break;
        case 's':
            fSat ^= 1;
            break;
        case 'n':
            fIgnoreNames ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( pNtk && pNtk->vPhases != NULL )
    {
        Abc_Print( -1, "Cannot compare networks with phases defined.\n" );
        return 1;
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( !Abc_NtkPrepareTwoNtks( stdout, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2, 1 ) )
        return 1;

    if ( fIgnoreNames )
    {
        if ( !fDelete1 )
        {
            pNtk1 = Abc_NtkStrash( pNtk1, 0, 1, 0 );
            fDelete1 = 1;
        }
        if ( !fDelete2 )
        {
            pNtk2 = Abc_NtkStrash( pNtk2, 0, 1, 0 );
            fDelete2 = 1;
        }
        Abc_NtkShortNames( pNtk1 );
        Abc_NtkShortNames( pNtk2 );
    }

    // perform equivalence checking
    if ( fPartition )
        Abc_NtkCecFraigPartAuto( pNtk1, pNtk2, nSeconds, fVerbose );
    else if ( nPartSize )
        Abc_NtkCecFraigPart( pNtk1, pNtk2, nSeconds, nPartSize, fVerbose );
    else if ( fSat )
        Abc_NtkCecSat( pNtk1, pNtk2, nConfLimit, nInsLimit );
    else
        Abc_NtkCecFraig( pNtk1, pNtk2, nSeconds, fVerbose );

    if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
    if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
    return 0;

usage:
    if ( nPartSize == 0 )
        strcpy( Buffer, "unused" );
    else
        sprintf(Buffer, "%d", nPartSize );
    Abc_Print( -2, "usage: cec [-T num] [-C num] [-I num] [-P num] [-psnvh] <file1> <file2>\n" );
    Abc_Print( -2, "\t         performs combinational equivalence checking\n" );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n", nSeconds );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n",    nConfLimit );
    Abc_Print( -2, "\t-I num : limit on the number of clause inspections [default = %d]\n", nInsLimit );
    Abc_Print( -2, "\t-P num : partition size for multi-output networks [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-p     : toggle automatic partitioning [default = %s]\n", fPartition? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle \"SAT only\" and \"FRAIG + SAT\" [default = %s]\n", fSat? "SAT only": "FRAIG + SAT" );
    Abc_Print( -2, "\t-n     : toggle how CIs/COs are matched (by name or by order) [default = %s]\n", fIgnoreNames? "by order": "by name" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tfile1  : (optional) the file with the first network\n");
    Abc_Print( -2, "\tfile2  : (optional) the file with the second network\n");
    Abc_Print( -2, "\t         if no files are given, uses the current network and its spec\n");
    Abc_Print( -2, "\t         if one file is given, uses the current network and the file\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDCec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtk1, * pNtk2;
    int fDelete1, fDelete2;
    char ** pArgvNew;
    int nArgcNew;
    int c;
    int fSat;
    int fVerbose;
    int nSeconds;
    int nConfLimit;
    int nInsLimit;
    int fPartition;
    int fMiter;

    extern int Abc_NtkDSat( Abc_Ntk_t * pNtk, ABC_INT64_T nConfLimit, ABC_INT64_T nInsLimit, int nLearnedStart, int nLearnedDelta, int nLearnedPerce, int fAlignPol, int fAndOuts, int fNewSolver, int fVerbose );
    extern int Abc_NtkDarCec( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nConfLimit, int fPartition, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fSat     =  0;
    fVerbose =  0;
    nSeconds = 20;
    nConfLimit = 10000;
    nInsLimit  = 0;
    fPartition = 0;
    fMiter     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "TCIpmsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nSeconds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSeconds < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nInsLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nInsLimit < 0 )
                goto usage;
            break;
        case 'p':
            fPartition ^= 1;
            break;
        case 'm':
            fMiter ^= 1;
            break;
        case 's':
            fSat ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( fMiter )
    {
        if ( pNtk == NULL )
        {
            Abc_Print( -1, "Empty network.\n" );
            return 1;
        }
        if ( Abc_NtkIsStrash(pNtk) )
        {
            pNtk1 = pNtk;
            fDelete1 = 0;
        }
        else
        {
            pNtk1 = Abc_NtkStrash( pNtk, 0, 1, 0 );
            fDelete1 = 1;
        }
        pNtk2 = NULL;
        fDelete2 = 0;
    }
    else
    {
        if ( !Abc_NtkPrepareTwoNtks( stdout, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2, 1 ) )
            return 1;
    }

    if ( (pNtk1 && Abc_NtkLatchNum(pNtk1)) || (pNtk2 && Abc_NtkLatchNum(pNtk2)) )
    {
        if ( pNtk1 && fDelete1 ) Abc_NtkDelete( pNtk1 );
        if ( pNtk2 && fDelete2 ) Abc_NtkDelete( pNtk2 );
        Abc_Print( -1, "Currently this command only works for networks without latches. Run \"comb\".\n" );
        return 1;
    }

    // perform equivalence checking
    if ( fSat && fMiter )
        Abc_NtkDSat( pNtk1, nConfLimit, nInsLimit, 0, 0, 0, 0, 0, 0, fVerbose );
    else
        Abc_NtkDarCec( pNtk1, pNtk2, nConfLimit, fPartition, fVerbose );

    if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
    if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
    return 0;

usage:
    Abc_Print( -2, "usage: dcec [-T num] [-C num] [-I num] [-mpsvh] <file1> <file2>\n" );
    Abc_Print( -2, "\t         performs combinational equivalence checking\n" );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n", nSeconds );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n",    nConfLimit );
    Abc_Print( -2, "\t-I num : limit on the number of clause inspections [default = %d]\n", nInsLimit );
    Abc_Print( -2, "\t-m     : toggle working on two networks or a miter [default = %s]\n", fMiter? "miter": "two networks" );
    Abc_Print( -2, "\t-p     : toggle automatic partitioning [default = %s]\n", fPartition? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle \"SAT only\" (miter) or \"FRAIG + SAT\" [default = %s]\n", fSat? "SAT only": "FRAIG + SAT" );
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tfile1  : (optional) the file with the first network\n");
    Abc_Print( -2, "\tfile2  : (optional) the file with the second network\n");
    Abc_Print( -2, "\t         if no files are given, uses the current network and its spec\n");
    Abc_Print( -2, "\t         if one file is given, uses the current network and the file\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDSec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Fra_Sec_t SecPar, * pSecPar = &SecPar;
    Abc_Ntk_t * pNtk, * pNtk1, * pNtk2;
    int fDelete1, fDelete2;
    char ** pArgvNew;
    int nArgcNew;
    int c, fCheck = 1;
    int fIgnoreNames;

    extern int Abc_NtkDarSec( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, Fra_Sec_t * p );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Fra_SecSetDefaultParams( pSecPar );
    pSecPar->TimeLimit = 0;
    fIgnoreNames = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FTarmfncvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pSecPar->nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pSecPar->nFramesMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pSecPar->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pSecPar->TimeLimit < 0 )
                goto usage;
            break;
        case 'a':
            pSecPar->fPhaseAbstract ^= 1;
            break;
        case 'r':
            pSecPar->fRetimeFirst ^= 1;
            break;
        case 'm':
            pSecPar->fRetimeRegs ^= 1;
            break;
        case 'f':
            pSecPar->fFraiging ^= 1;
            break;
        case 'n':
            fIgnoreNames ^= 1;
            break;
        case 'c':
            fCheck ^= 1;
            break;
        case 'v':
            pSecPar->fVerbose ^= 1;
            break;
        case 'w':
            pSecPar->fVeryVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( !Abc_NtkPrepareTwoNtks( stdout, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2, fCheck ) )
        return 1;
    if ( Abc_NtkLatchNum(pNtk1) == 0 || Abc_NtkLatchNum(pNtk2) == 0 )
    {
        if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
        if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
        Abc_Print( -1, "The network has no latches. Used combinational command \"cec\".\n" );
        return 0;
    }

    if ( fIgnoreNames )
    {
        if ( !fDelete1 )
        {
            pNtk1 = Abc_NtkStrash( pNtk1, 0, 1, 0 );
            fDelete1 = 1;
        }
        if ( !fDelete2 )
        {
            pNtk2 = Abc_NtkStrash( pNtk2, 0, 1, 0 );
            fDelete2 = 1;
        }
        Abc_NtkShortNames( pNtk1 );
        Abc_NtkShortNames( pNtk2 );
    }

    // perform verification
    pAbc->Status = Abc_NtkDarSec( pNtk1, pNtk2, pSecPar );

    if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
    if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
    return 0;

usage:
    Abc_Print( -2, "usage: dsec [-F num] [-T num] [-armfncvwh] <file1> <file2>\n" );
    Abc_Print( -2, "\t         performs inductive sequential equivalence checking\n" );
    Abc_Print( -2, "\t-F num : the limit on the depth of induction [default = %d]\n", pSecPar->nFramesMax );
    Abc_Print( -2, "\t-T num : the approximate runtime limit (in seconds) [default = %d]\n", pSecPar->TimeLimit );
    Abc_Print( -2, "\t-a     : toggles the use of phase abstraction [default = %s]\n", pSecPar->fPhaseAbstract? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggles forward retiming at the beginning [default = %s]\n", pSecPar->fRetimeFirst? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggles min-register retiming [default = %s]\n", pSecPar->fRetimeRegs? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggles the internal use of fraiging [default = %s]\n", pSecPar->fFraiging? "yes": "no" );
    Abc_Print( -2, "\t-n     : toggles how CIs/COs are matched (by name or by order) [default = %s]\n", fIgnoreNames? "by order": "by name" );
    Abc_Print( -2, "\t-c     : toggles performing internal netlist check [default = %s]\n", fCheck? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n", pSecPar->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggles additional verbose output [default = %s]\n", pSecPar->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tfile1  : (optional) the file with the first network\n");
    Abc_Print( -2, "\tfile2  : (optional) the file with the second network\n");
    Abc_Print( -2, "\t         if no files are given, uses the current network and its spec\n");
    Abc_Print( -2, "\t         if one file is given, uses the current network and the file\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDProve( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Fra_Sec_t SecPar, * pSecPar = &SecPar;
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    char * pLogFileName = NULL;
    int nBmcFramesMax = 20;
    int nBmcConfMax = 2000;

    extern void Fra_SecSetDefaultParams( Fra_Sec_t * p );
    extern int Abc_NtkDarProve( Abc_Ntk_t * pNtk, Fra_Sec_t * pSecPar, int nBmcFramesMax, int nBmcConfMax );
    // set defaults
    Fra_SecSetDefaultParams( pSecPar );
//    pSecPar->TimeLimit = 300;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "cbAEFCGDVBRTLarmfijkoupwvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            pSecPar->fTryComb ^= 1;
            break;
        case 'b':
            pSecPar->fTryBmc ^= 1;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            nBmcFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBmcFramesMax < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by an integer.\n" );
                goto usage;
            }
            nBmcConfMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBmcConfMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pSecPar->nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pSecPar->nFramesMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pSecPar->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pSecPar->nBTLimit < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            pSecPar->nBTLimitGlobal = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pSecPar->nBTLimitGlobal < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pSecPar->nBTLimitInter = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pSecPar->nBTLimitInter < 0 )
                goto usage;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            pSecPar->nBddVarsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pSecPar->nBddVarsMax < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pSecPar->nBddMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pSecPar->nBddMax < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pSecPar->nBddIterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pSecPar->nBddIterMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pSecPar->nPdrTimeout = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pSecPar->nPdrTimeout < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'a':
            pSecPar->fPhaseAbstract ^= 1;
            break;
        case 'r':
            pSecPar->fRetimeFirst ^= 1;
            break;
        case 'm':
            pSecPar->fRetimeRegs ^= 1;
            break;
        case 'f':
            pSecPar->fFraiging ^= 1;
            break;
        case 'i':
            pSecPar->fInduction ^= 1;
            break;
        case 'j':
            pSecPar->fInterpolation ^= 1;
            break;
        case 'k':
            pSecPar->fInterSeparate ^= 1;
            break;
        case 'o':
            pSecPar->fReorderImage ^= 1;
            break;
        case 'u':
            pSecPar->fReadUnsolved ^= 1;
            break;
        case 'p':
            pSecPar->fUsePdr ^= 1;
            break;
        case 'w':
            pSecPar->fVeryVerbose ^= 1;
            break;
        case 'v':
            pSecPar->fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for structrally hashed networks. Run \"st\".\n" );
        return 0;
    }
    if ( pAbc->fBatchMode && (pAbc->Status == 0 || pAbc->Status == 1) ) 
    { 
        Abc_Print( 1, "The miters is already solved; skipping the command.\n" ); 
        return 0;
    }

    // perform verification
    pAbc->Status = Abc_NtkDarProve( pNtk, pSecPar, nBmcFramesMax, nBmcConfMax );
    Abc_FrameReplaceCex( pAbc, &pNtk->pSeqModel );
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "dprove" );

    // read back the resulting unsolved reduced sequential miter
    if ( pSecPar->fReadUnsolved && pSecPar->nSMnumber >= 0 )
    {
        char FileName[100];
        sprintf(FileName, "sm%02d.aig", pSecPar->nSMnumber );
        pNtk = Io_Read( FileName, Io_ReadFileType(FileName), 1, 0 );
        if ( pNtk == NULL )
            Abc_Print( -1, "Cannot read back unsolved reduced sequential miter \"%s\",\n", FileName );
        else
            Abc_FrameReplaceCurrentNetwork( pAbc, pNtk );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: dprove [-AEFCGDVBRT num] [-L file] [-cbarmfijoupvwh]\n" );
    Abc_Print( -2, "\t         performs SEC on the sequential miter\n" );
    Abc_Print( -2, "\t-A num : the limit on the depth of BMC [default = %d]\n", nBmcFramesMax );
    Abc_Print( -2, "\t-E num : the conflict limit during BMC [default = %d]\n", nBmcConfMax );
    Abc_Print( -2, "\t-F num : the limit on the depth of induction [default = %d]\n", pSecPar->nFramesMax );
    Abc_Print( -2, "\t-C num : the conflict limit at a node during induction [default = %d]\n", pSecPar->nBTLimit );
    Abc_Print( -2, "\t-G num : the global conflict limit during induction [default = %d]\n", pSecPar->nBTLimitGlobal );
    Abc_Print( -2, "\t-D num : the conflict limit during interpolation [default = %d]\n", pSecPar->nBTLimitInter );
    Abc_Print( -2, "\t-V num : the flop count limit for BDD-based reachablity [default = %d]\n", pSecPar->nBddVarsMax );
    Abc_Print( -2, "\t-B num : the BDD size limit in BDD-based reachablity [default = %d]\n", pSecPar->nBddMax );
    Abc_Print( -2, "\t-R num : the max number of reachability iterations [default = %d]\n", pSecPar->nBddIterMax );
    Abc_Print( -2, "\t-T num : the timeout for property directed reachability [default = %d]\n", pSecPar->nPdrTimeout );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n", pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-c     : toggles using CEC before attempting SEC [default = %s]\n", pSecPar->fTryComb? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggles using BMC before attempting SEC [default = %s]\n", pSecPar->fTryBmc? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggles the use of phase abstraction [default = %s]\n", pSecPar->fPhaseAbstract? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggles forward retiming at the beginning [default = %s]\n", pSecPar->fRetimeFirst? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggles min-register retiming [default = %s]\n", pSecPar->fRetimeRegs? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggles the internal use of fraiging [default = %s]\n", pSecPar->fFraiging? "yes": "no" );
    Abc_Print( -2, "\t-i     : toggles the use of induction [default = %s]\n", pSecPar->fInduction? "yes": "no" );
    Abc_Print( -2, "\t-j     : toggles the use of interpolation [default = %s]\n", pSecPar->fInterpolation? "yes": "no" );
    Abc_Print( -2, "\t-k     : toggles applying interpolation to each output [default = %s]\n", pSecPar->fInterSeparate? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggles using BDD variable reordering during image computation [default = %s]\n", pSecPar->fReorderImage? "yes": "no" );
    Abc_Print( -2, "\t-u     : toggles reading back unsolved reduced sequential miter [default = %s]\n", pSecPar->fReadUnsolved? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggles trying property directed reachability in the end [default = %s]\n", pSecPar->fUsePdr? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n", pSecPar->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggles additional verbose output [default = %s]\n", pSecPar->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tCommand \"dprove\" can also be used for sequential synthesis (dprove -brjopu)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbSec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtk1, * pNtk2;
    int fDelete1, fDelete2;
    char ** pArgvNew;
    int nArgcNew;
    int fMiter, nFrames, fVerbose, c;

    extern int Abc_NtkDarAbSec( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nFrames, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fMiter   = 1;
    nFrames  = 2;
    fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'm':
            fMiter ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( fMiter )
    {
//        pNtk = Io_Read( argv[globalUtilOptind], Io_ReadFileType(argv[globalUtilOptind]), 1, 0 );
        if ( argc == globalUtilOptind + 1 )
        {
            Abc_Print( -1, "The miter cannot be given on the command line. Use \"read\".\n" );
            return 0;
        }
        if ( !Abc_NtkIsStrash(pNtk) )
        {
            Abc_Print( -1, "The miter should be structurally hashed. Use \"st\"\n" );
            return 0;
        }
        if ( Abc_NtkDarAbSec( pNtk, NULL, nFrames, fVerbose ) == 1 )
            pAbc->Status = 1;
        else
            pAbc->Status = -1;
    }
    else
    {
        pArgvNew = argv + globalUtilOptind;
        nArgcNew = argc - globalUtilOptind;
        if ( !Abc_NtkPrepareTwoNtks( stdout, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2, 1 ) )
            return 1;
        if ( Abc_NtkLatchNum(pNtk1) == 0 || Abc_NtkLatchNum(pNtk2) == 0 )
        {
            if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
            if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
            Abc_Print( -1, "The network has no latches. Used combinational command \"cec\".\n" );
            return 0;
        }
        // perform verification
        if ( Abc_NtkDarAbSec( pNtk1, pNtk2, nFrames, fVerbose ) == 1 )
            pAbc->Status = 1;
        else
            pAbc->Status = -1;
        if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
        if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: absec [-F num] [-mv] <file1> <file2>\n" );
    Abc_Print( -2, "\t         performs SEC by applying CEC to several timeframes\n" );
    Abc_Print( -2, "\t-F num : the total number of timeframes to use [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-m     : toggles miter vs. two networks [default = %s]\n", fMiter? "miter": "two networks" );
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\tfile1  : (optional) the file with the first network\n");
    Abc_Print( -2, "\tfile2  : (optional) the file with the second network\n");
    Abc_Print( -2, "\t         if no files are given, uses the current network and its spec\n");
    Abc_Print( -2, "\t         if one file is given, uses the current network and the file\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSimSec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Ssw_Pars_t Pars, * pPars = &Pars;
    Abc_Ntk_t * pNtk, * pNtk1, * pNtk2;
    int fDelete1, fDelete2;
    char ** pArgvNew;
    int nArgcNew, c;
    int fMiter;

    extern int Abc_NtkDarSimSec( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, Ssw_Pars_t * pPars );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fMiter = 1;
    Ssw_ManSetDefaultParams( pPars );
    pPars->fPartSigCorr = 1;
    pPars->fVerbose     = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FDcymvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesK = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesK < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nIsleDist = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIsleDist < 0 )
                goto usage;
            break;
        case 'm':
            fMiter ^= 1;
            break;
        case 'c':
            pPars->fPartSigCorr ^= 1;
            break;
        case 'y':
            pPars->fDumpSRInit ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( fMiter )
    {
//        Abc_Ntk_t * pNtkA, * pNtkB;
        if ( !Abc_NtkIsStrash(pNtk) )
        {
            Abc_Print( -1, "This command works only for structrally hashed networks. Run \"st\".\n" );
            return 0;
        }
        Abc_NtkDarSimSec( pNtk, NULL, pPars );
/*
        pNtkA = Abc_NtkDup( pNtk );
        pNtkB = Abc_NtkDup( pNtk );
        Abc_NtkDarSimSec( pNtkA, pNtkB, pPars );
        Abc_NtkDelete( pNtkA );
        Abc_NtkDelete( pNtkB );
*/
    }
    else
    {
        pArgvNew = argv + globalUtilOptind;
        nArgcNew = argc - globalUtilOptind;
        if ( !Abc_NtkPrepareTwoNtks( stdout, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2, 1 ) )
            return 1;
        if ( Abc_NtkLatchNum(pNtk1) == 0 || Abc_NtkLatchNum(pNtk2) == 0 )
        {
            if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
            if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
            Abc_Print( -1, "The network has no latches. Used combinational command \"cec\".\n" );
            return 0;
        }
        // perform verification
        Abc_NtkDarSimSec( pNtk1, pNtk2, pPars );
        if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
        if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: simsec [-FD num] [-mcyv] <file1> <file2>\n" );
    Abc_Print( -2, "\t         performs SEC using structural similarity\n" );
    Abc_Print( -2, "\t-F num : the limit on the depth of induction [default = %d]\n", pPars->nFramesK );
    Abc_Print( -2, "\t-D num : the distance for extending islands [default = %d]\n", pPars->nIsleDist );
    Abc_Print( -2, "\t-m     : toggles miter vs. two networks [default = %s]\n", fMiter? "miter": "two networks" );
    Abc_Print( -2, "\t-c     : uses partial vs. full signal correspondence [default = %s]\n", pPars->fPartSigCorr? "partial": "full" );
    Abc_Print( -2, "\t-y     : dumps speculatively reduced miter of the classes [default = %s]\n", pPars->fDumpSRInit? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\tfile1  : (optional) the file with the first network\n");
    Abc_Print( -2, "\tfile2  : (optional) the file with the second network\n");
    Abc_Print( -2, "\t         if no files are given, uses the current network and its spec\n");
    Abc_Print( -2, "\t         if one file is given, uses the current network and the file\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandMatch( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtk1, * pNtk2, * pNtkRes;
    int fDelete1, fDelete2;
    char ** pArgvNew;
    int nArgcNew, c;
    int fMiter;
    int nDist;
    int fVerbose;

    extern Abc_Ntk_t * Abc_NtkDarMatch( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int nDist, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fMiter = 0;
    nDist = 0;
    fVerbose = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Dmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nDist = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDist < 0 )
                goto usage;
            break;
        case 'm':
            fMiter ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }

    if ( fMiter )
    {
//        Abc_Ntk_t * pNtkA, * pNtkB;
        if ( !Abc_NtkIsStrash(pNtk) )
        {
            Abc_Print( -1, "This command works only for structrally hashed networks. Run \"st\".\n" );
            return 0;
        }
        pNtkRes = Abc_NtkDarMatch( pNtk, NULL, nDist, fVerbose );
/*
        pNtkA = Abc_NtkDup( pNtk );
        pNtkB = Abc_NtkDup( pNtk );
        Abc_NtkDarSimSec( pNtkA, pNtkB, pPars );
        Abc_NtkDelete( pNtkA );
        Abc_NtkDelete( pNtkB );
*/
    }
    else
    {
        pArgvNew = argv + globalUtilOptind;
        nArgcNew = argc - globalUtilOptind;
        if ( !Abc_NtkPrepareTwoNtks( stdout, pNtk, pArgvNew, nArgcNew, &pNtk1, &pNtk2, &fDelete1, &fDelete2, 1 ) )
            return 1;
        if ( Abc_NtkLatchNum(pNtk1) == 0 || Abc_NtkLatchNum(pNtk2) == 0 )
        {
            if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
            if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
            Abc_Print( -1, "The network has no latches. Used combinational command \"cec\".\n" );
            return 0;
        }
        // perform verification
        pNtkRes = Abc_NtkDarMatch( pNtk1, pNtk2, nDist, fVerbose );
        if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
        if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
    }
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Matching has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: match [-D num] [-mv] <file1> <file2>\n" );
    Abc_Print( -2, "\t         detects structural similarity using simulation\n" );
    Abc_Print( -2, "\t         replaces the current network by the miter of differences\n" );
    Abc_Print( -2, "\t-D num : the distance for extending differences [default = %d]\n", nDist );
    Abc_Print( -2, "\t-m     : toggles miter vs. two networks [default = %s]\n", fMiter? "miter": "two networks" );
    Abc_Print( -2, "\t-v     : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\tfile1  : (optional) the file with the first network\n");
    Abc_Print( -2, "\tfile2  : (optional) the file with the second network\n");
    Abc_Print( -2, "\t         if no files are given, uses the current network and its spec\n");
    Abc_Print( -2, "\t         if one file is given, uses the current network and the file\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int RetValue;
    int fVerbose;
    int nConfLimit;
    int nInsLimit;
    abctime clk;
    // set defaults
    fVerbose   = 0;
    nConfLimit = 0;
    nInsLimit  = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CIvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nInsLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nInsLimit < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkLatchNum(pNtk) > 0 )
    {
        Abc_Print( -1, "Currently can only solve the miter for combinational circuits.\n" );
        return 0;
    }

    clk = Abc_Clock();
    if ( Abc_NtkIsStrash(pNtk) )
    {
        RetValue = Abc_NtkMiterSat( pNtk, (ABC_INT64_T)nConfLimit, (ABC_INT64_T)nInsLimit, fVerbose, NULL, NULL );
    }
    else
    {
        assert( Abc_NtkIsLogic(pNtk) );
        Abc_NtkToBdd( pNtk );
        RetValue = Abc_NtkMiterSat( pNtk, (ABC_INT64_T)nConfLimit, (ABC_INT64_T)nInsLimit, fVerbose, NULL, NULL );
    }

    // verify that the pattern is correct
    if ( RetValue == 0 && Abc_NtkPoNum(pNtk) == 1 )
    {
        //int i;
        //Abc_Obj_t * pObj;
        int * pSimInfo = Abc_NtkVerifySimulatePattern( pNtk, pNtk->pModel );
        if ( pSimInfo[0] != 1 )
            Abc_Print( 1, "ERROR in Abc_NtkMiterSat(): Generated counter example is invalid.\n" );
        ABC_FREE( pSimInfo );
        /*
        // print model
        Abc_NtkForEachPi( pNtk, pObj, i )
        {
            Abc_Print( -1, "%d", (int)(pNtk->pModel[i] > 0) );
            if ( i == 70 )
                break;
        }
        Abc_Print( -1, "\n" );
        */
    }
    pAbc->Status = RetValue;
    if ( RetValue == -1 )
        Abc_Print( 1, "UNDECIDED      " );
    else if ( RetValue == 0 )
        Abc_Print( 1, "SATISFIABLE    " );
    else
        Abc_Print( 1, "UNSATISFIABLE  " );
    //Abc_Print( -1, "\n" );
    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
    return 0;

usage:
    Abc_Print( -2, "usage: sat [-C num] [-I num] [-vh]\n" );
    Abc_Print( -2, "\t         solves the combinational miter using SAT solver MiniSat-1.14\n" );
    Abc_Print( -2, "\t         derives CNF from the current network and leave it unchanged\n" );
    Abc_Print( -2, "\t         (there is also a newer SAT solving command \"dsat\")\n" );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n",    nConfLimit );
    Abc_Print( -2, "\t-I num : limit on the number of inspections [default = %d]\n", nInsLimit );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDSat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int RetValue;
    int fAlignPol;
    int fAndOuts;
    int fNewSolver;
    int fSilent;
    int fShowPattern;
    int fVerbose;
    int nConfLimit;
    int nLearnedStart;
    int nLearnedDelta;
    int nLearnedPerce;
    int nInsLimit;
    abctime clk;

    extern int Abc_NtkDSat( Abc_Ntk_t * pNtk, ABC_INT64_T nConfLimit, ABC_INT64_T nInsLimit, int nLearnedStart, int nLearnedDelta, int nLearnedPerce, int fAlignPol, int fAndOuts, int fNewSolver, int fVerbose );
    // set defaults
    fAlignPol  = 0;
    fAndOuts   = 0;
    fNewSolver = 0;
    fSilent    = 0;
    fShowPattern = 0;
    fVerbose   = 0;
    nConfLimit = 0;
    nInsLimit  = 0;
    nLearnedStart = 0;
    nLearnedDelta = 0;
    nLearnedPerce = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CILDEpansvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nInsLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nInsLimit < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLearnedStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLearnedStart < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nLearnedDelta = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLearnedDelta < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by an integer.\n" );
                goto usage;
            }
            nLearnedPerce = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLearnedPerce < 0 )
                goto usage;
            break;
        case 'p':
            fAlignPol ^= 1;
            break;
        case 'a':
            fAndOuts ^= 1;
            break;
        case 'n':
            fNewSolver ^= 1;
            break;
        case 's':
            fSilent ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fShowPattern ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( argc == globalUtilOptind + 1 )
    {
        int * pModel = NULL;
        extern int Cnf_DataSolveFromFile( char * pFileName, int nConfLimit, int nLearnedStart, int nLearnedDelta, int nLearnedPerce, int fVerbose, int fShowPattern, int ** ppModel, int nPis );
        // get the input file name
        char * pFileName = argv[globalUtilOptind];
        FILE * pFile = fopen( pFileName, "rb" );
        if ( pFile == NULL )
        {
            printf( "Cannot open file \"%s\" for writing.\n", pFileName );
            return 0;
        }
        fclose( pFile );
        Cnf_DataSolveFromFile( pFileName, nConfLimit, nLearnedStart, nLearnedDelta, nLearnedPerce, fVerbose, fShowPattern, &pModel, pNtk ? Abc_NtkPiNum(pNtk) : 0 );
        if ( pModel && pNtk )
        {
            int * pSimInfo = Abc_NtkVerifySimulatePattern( pNtk, pModel );
            if ( pSimInfo[0] != 1 )
                Abc_Print( 1, "ERROR in mapping PIs into SAT vars: Generated CEX is invalid.\n" );
            ABC_FREE( pSimInfo );
            pAbc->pCex = Abc_CexCreate( 0, Abc_NtkPiNum(pNtk), pModel, 0, 0, 0 );
        }
        ABC_FREE( pModel );
        return 0;
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkLatchNum(pNtk) > 0 )
    {
        Abc_Print( -1, "Currently can only solve the miter for combinational circuits.\n" );
        return 0;
    }

    if ( Abc_NtkPoNum(pNtk) != 1 )
    {
        Abc_Print( -1, "Currently expects a single-output miter.\n" );
        return 0;
    }

    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }
    clk = Abc_Clock();
    RetValue = Abc_NtkDSat( pNtk, (ABC_INT64_T)nConfLimit, (ABC_INT64_T)nInsLimit, nLearnedStart, nLearnedDelta, nLearnedPerce, fAlignPol, fAndOuts, fNewSolver, fVerbose );
    // verify that the pattern is correct
    if ( RetValue == 0 && Abc_NtkPoNum(pNtk) == 1 )
    {
        int * pSimInfo = Abc_NtkVerifySimulatePattern( pNtk, pNtk->pModel );
        if ( pSimInfo[0] != 1 )
            Abc_Print( 1, "ERROR in Abc_NtkMiterSat(): Generated counter example is invalid.\n" );
        ABC_FREE( pSimInfo );
        pAbc->pCex = Abc_CexCreate( 0, Abc_NtkPiNum(pNtk), pNtk->pModel, 0, 0, 0 );
    }
    pAbc->Status = RetValue;
    if ( !fSilent )
    {
        if ( RetValue == -1 )
            Abc_Print( 1, "UNDECIDED      " );
        else if ( RetValue == 0 )
            Abc_Print( 1, "SATISFIABLE    " );
        else
            Abc_Print( 1, "UNSATISFIABLE  " );
        Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: dsat [-CILDE num] [-pansvh]\n" );
    Abc_Print( -2, "\t         solves the combinational miter using SAT solver MiniSat-1.14\n" );
    Abc_Print( -2, "\t         derives CNF from the current network and leaves it unchanged\n" );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n",    nConfLimit );
    Abc_Print( -2, "\t-I num : limit on the number of inspections [default = %d]\n", nInsLimit );
    Abc_Print( -2, "\t-L num : starting value for learned clause removal [default = %d]\n", nLearnedStart );
    Abc_Print( -2, "\t-D num : delta value for learned clause removal [default = %d]\n", nLearnedDelta );
    Abc_Print( -2, "\t-E num : ratio percentage for learned clause removal [default = %d]\n", nLearnedPerce );
    Abc_Print( -2, "\t-p     : align polarity of SAT variables [default = %s]\n", fAlignPol? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle ANDing/ORing of miter outputs [default = %s]\n", fAndOuts? "ANDing": "ORing" );
    Abc_Print( -2, "\t-n     : toggle using new solver [default = %s]\n", fNewSolver? "yes": "no" );
    Abc_Print( -2, "\t-s     : enable silent computation (no reporting) [default = %s]\n", fSilent? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandXSat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    abctime clk;
    int c;
    int fVerbose   = 0;
    int nConfLimit = 0;
    int nInsLimit  = 0;
    int nLearnedStart = 0;
    int nLearnedDelta = 0;
    int nLearnedPerce = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CILDEhv" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nInsLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nInsLimit < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLearnedStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLearnedStart < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nLearnedDelta = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLearnedDelta < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by an integer.\n" );
                goto usage;
            }
            nLearnedPerce = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLearnedPerce < 0 )
                goto usage;
            break;
        case 'h':
            goto usage;
        case 'v':
            fVerbose ^= 1;
            break;

        default:
            goto usage;
        }
    }

    if ( argc == globalUtilOptind + 1 )
    {
        char * pFileName = argv[globalUtilOptind];
        xSAT_Solver_t * p;
        int status;

        FILE * pFile = fopen( pFileName, "rb" );
        if ( pFile == NULL )
        {
            printf( "Cannot open file \"%s\" for writing.\n", pFileName );
            return 0;
        }
        xSAT_SolverParseDimacs( pFile, &p );

        clk = Abc_Clock();
        status = xSAT_SolverSolve( p );
        fclose( pFile );

        xSAT_SolverPrintStats( p );
        if ( status == 0 )
            Abc_Print( 1, "UNDECIDED      " );
        else if ( status == 1 )
            Abc_Print( 1, "SATISFIABLE    " );
        else
            Abc_Print( 1, "UNSATISFIABLE  " );

        Abc_PrintTime( 1, "Time", Abc_Clock() - clk );

        xSAT_SolverDestroy( p );
        return 0;
    }

usage:
    Abc_Print( -2, "usage: xsat [-CILDE num] [-hv]<file>.cnf\n" );
    Abc_Print( -2, "\t         solves the combinational miter using SAT solver MiniSat-1.14\n" );
    Abc_Print( -2, "\t         derives CNF from the current network and leaves it unchanged\n" );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n",    nConfLimit );
    Abc_Print( -2, "\t-I num : limit on the number of inspections [default = %d]\n", nInsLimit );
    Abc_Print( -2, "\t-L num : starting value for learned clause removal [default = %d]\n", nLearnedStart );
    Abc_Print( -2, "\t-D num : delta value for learned clause removal [default = %d]\n", nLearnedDelta );
    Abc_Print( -2, "\t-E num : ratio percentage for learned clause removal [default = %d]\n", nLearnedPerce );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSatoko( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern satoko_opts_t * Cmd_DeriveOptionFromSettings( int argc, char ** argv );

    // create default options
    satoko_opts_t opts, * popts;
    satoko_default_opts(&opts);

    // override default options
    popts = Cmd_DeriveOptionFromSettings( argc, argv );
    if ( popts == NULL )
        goto usage;
    memcpy( &opts, popts, sizeof(satoko_opts_t) );
    ABC_FREE( popts );

    if ( argc == globalUtilOptind + 1 )
    {
        abctime clk;
        char * pFileName = argv[globalUtilOptind];
        satoko_t * p;
        int status;

        status = satoko_parse_dimacs( pFileName, &p );
        satoko_configure(p, &opts);

        clk = Abc_Clock();
        if ( status == SATOKO_OK )
            status = satoko_solve( p );

        if ( status == SATOKO_UNDEC )
            Abc_Print( 1, "UNDECIDED      " );
        else if ( status == SATOKO_SAT )
            Abc_Print( 1, "SATISFIABLE    " );
        else
            Abc_Print( 1, "UNSATISFIABLE  " );

        Abc_PrintTime( 1, "Time", Abc_Clock() - clk );

        satoko_destroy( p );
        return 0;
    }

usage:
#ifdef SATOKO_ACT_VAR_FIXED
    Abc_Print( -2, "usage: satoko [-CPDEFGHIJKLMNOQRSTU num] [-hv]<file>.cnf\n" );
#else
    Abc_Print( -2, "usage: satoko [-CPDEFGHIJKLMNOQRS num] [-hv]<file>.cnf\n" );
#endif
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n", opts.conf_limit );
    Abc_Print( -2, "\t-P num : limit on the number of propagations [default = %d]\n", opts.conf_limit );
    Abc_Print( -2, "\n\tConstants used for restart heuristic:\n");
    Abc_Print( -2, "\t-D num : Constant value used by restart heuristics in forcing restarts [default = %f]\n", opts.f_rst );
    Abc_Print( -2, "\t-E num : Constant value used by restart heuristics in  blocking restarts [default = %f]\n", opts.b_rst );
    Abc_Print( -2, "\t-F num : Lower bound n.of conflicts for start blocking restarts [default = %d]\n", opts.fst_block_rst );
    Abc_Print( -2, "\t-G num : Size of the moving avarege queue for LBD (force restart) [default = %d]\n", opts.sz_lbd_bqueue );
    Abc_Print( -2, "\t-H num : Size of the moving avarege queue for Trail size (block restart) [default = %d]\n", opts.sz_trail_bqueue );
    Abc_Print( -2, "\n\tConstants used for clause database reduction heuristic:\n");
    Abc_Print( -2, "\t-I num : N.of conflicts before first clause databese reduction [default = %d]\n", opts.n_conf_fst_reduce );
    Abc_Print( -2, "\t-J num : Increment to reduce [default = %d]\n", opts.inc_reduce );
    Abc_Print( -2, "\t-K num : Special increment to reduce [default = %d]\n", opts.inc_special_reduce );
    Abc_Print( -2, "\t-L num : Protecs clauses from deletion for one turn if its LBD is lower [default = %d]\n", opts.lbd_freeze_clause );
    Abc_Print( -2, "\t-M num : Percentage of learned clauses to remove [default = %d]\n", ( int )( 100 * opts.learnt_ratio ) );
    Abc_Print( -2, "\t-N num : Max percentage of garbage in clause database [default = %d]\n", ( int )( 100 * opts.garbage_max_ratio ) );
    Abc_Print( -2, "\n\tConstants used for binary resolution (clause minimization):\n");
    Abc_Print( -2, "\t-O num : Max clause size for binary resolution [default = %d]\n", opts.clause_max_sz_bin_resol );
    Abc_Print( -2, "\t-Q num : Min clause LBD for binary resolution [default = %d]\n", opts.clause_min_lbd_bin_resol );
    Abc_Print( -2, "\n\tConstants used for branching (VSIDS heuristic):\n");
    Abc_Print( -2, "\t-R num : Clause activity decay factor (when using float clause activity) [default = %f]\n", opts.clause_decay );
    Abc_Print( -2, "\t-S num : Variable activity decay factor [default = %f]\n", opts.var_decay );
#ifdef SATOKO_ACT_VAR_FIXED
    Abc_Print( -2, "\t-T num : Variable activity limit valeu [default = 0x%08X]\n", opts.var_act_limit );
    Abc_Print( -2, "\t-U num : Variable activity re-scale factor [default = 0x%08X]\n", opts.var_act_rescale );
#endif
    Abc_Print( -2, "\n\t-v     : prints verbose information [default = %s]\n", opts.verbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Satoko( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManSatokoDimacs( char * pFileName, satoko_opts_t * opts );
    extern void Gia_ManSatokoCall( Gia_Man_t * p, satoko_opts_t * opts, int fSplit, int fIncrem );
    int c, fSplit = 0, fIncrem = 0;

    satoko_opts_t opts;
    satoko_default_opts(&opts);
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Csivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            opts.conf_limit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( opts.conf_limit < 0 )
                goto usage;
            break;
        case 's':
            fSplit ^= 1;
            break;
        case 'i':
            fIncrem ^= 1;
            break;
        case 'v':
            opts.verbose ^= 1;
            break;
        case 'h':
            goto usage;

        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
    {
        Gia_ManSatokoDimacs( argv[globalUtilOptind], &opts );
        return 0;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Satoko(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManSatokoCall( pAbc->pGia, &opts, fSplit, fIncrem );
    return 0;

usage:
    Abc_Print( -2, "usage: &satoko [-C num] [-sivh] <file.cnf>\n" );
    Abc_Print( -2, "\t             run Satoko by Bruno Schmitt\n" );
    Abc_Print( -2, "\t-C num     : limit on the number of conflicts [default = %d]\n", opts.conf_limit );
    Abc_Print( -2, "\t-s         : split multi-output miter into individual outputs [default = %s]\n", fSplit? "yes": "no" );
    Abc_Print( -2, "\t-i         : split multi-output miter and solve incrementally [default = %s]\n", fIncrem? "yes": "no" );
    Abc_Print( -2, "\t-v         : prints verbose information [default = %s]\n", opts.verbose? "yes": "no" );
    Abc_Print( -2, "\t<file.cnf> : (optional) CNF file to solve\n");
    Abc_Print( -2, "\t-h         : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Sat3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManSat3Call( Gia_Man_t * p, int fSplit );
    int c, fSplit = 0, fIncrem = 0;

    satoko_opts_t opts;
    satoko_default_opts(&opts);
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Csivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            opts.conf_limit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( opts.conf_limit < 0 )
                goto usage;
            break;
        case 's':
            fSplit ^= 1;
            break;
        case 'i':
            fIncrem ^= 1;
            break;
        case 'v':
            opts.verbose ^= 1;
            break;
        case 'h':
            goto usage;

        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Sat3(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManSat3Call( pAbc->pGia, fSplit );
    return 0;

usage:
    Abc_Print( -2, "usage: &sat3 [-C num] [-sivh]\n" );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n", opts.conf_limit );
    Abc_Print( -2, "\t-s     : split multi-output miter into individual outputs [default = %s]\n", fSplit? "yes": "no" );
    Abc_Print( -2, "\t-i     : split multi-output miter and solve incrementally [default = %s]\n", fIncrem? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", opts.verbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Kissat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Mf_ManDumpCnf( Gia_Man_t * p, char * pFileName, int nLutSize, int fCnfObjIds, int fAddOrCla, int fVerbose );
    extern void Gia_ManKissatCall( Abc_Frame_t * pAbc, char * pFileName, char * pArgs, int nConfs, int nTimeLimit, int fSat, int fUnsat, int fPrintCex, int fVerbose );
    int c, nConfs = 0, nTimeLimit = 0, fSat = 0, fUnsat = 0, fPrintCex = 0, fKissat = 1, fVerbose = 0;
    char * pArgs = NULL;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CTAsuckvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfs < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeLimit < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a file name.\n" );
                goto usage;
            }
            pArgs = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 's':
            fSat ^= 1;
            break;
        case 'u':
            fUnsat ^= 1;
            break;
        case 'c':
            fPrintCex ^= 1;
            break;
        case 'k':
            fKissat ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;

        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
    {
        Gia_ManKissatCall( pAbc, argv[globalUtilOptind], pArgs, nConfs, nTimeLimit, fSat, fUnsat, fPrintCex, fVerbose );
        return 0;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Satoko(): There is no AIG.\n" );
        return 1;
    }
    else if ( fKissat )
    {
        extern Vec_Int_t * kissat_solve_cnf( Cnf_Dat_t * pCnf, char * pArgs, int nConfs, int nTimeLimit, int fSat, int fUnsat, int fPrintCex, int fVerbose );
        extern void * Mf_ManGenerateCnf( Gia_Man_t * pGia, int nLutSize, int fCnfObjIds, int fAddOrCla, int fMapping, int fVerbose );
        int nLutSize    = 8;
        int fCnfObjIds  = 0;        
        int fAddOrCla   = 1;
        Cnf_Dat_t * pCnf = (Cnf_Dat_t *)Mf_ManGenerateCnf( pAbc->pGia, nLutSize, fCnfObjIds, fAddOrCla, 0, fVerbose );
        Vec_Int_t * vRes = kissat_solve_cnf( pCnf, pArgs, nConfs, nTimeLimit, fSat, fUnsat, fPrintCex, 1 );
        Vec_IntFreeP( &vRes );
        Cnf_DataFree(pCnf);
    }
    else
    {
        int nLutSize    = 8;
        int fCnfObjIds  = 0;
        int fAddOrCla   = 1;
        char * pFileName = "_temp_.cnf";
        Mf_ManDumpCnf( pAbc->pGia, pFileName, nLutSize, fCnfObjIds, fAddOrCla, fVerbose );
        Gia_ManKissatCall( pAbc, pFileName, pArgs, nConfs, nTimeLimit, fSat, fUnsat, fPrintCex, fVerbose );
        unlink( pFileName );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &kissat [-CT num] [-suckvh] [-A string] <file.cnf>\n" );
    Abc_Print( -2, "\t             run SAT solver Kissat 4.0.2, by Armin Biere (https://github.com/arminbiere/kissat)\n" );
    Abc_Print( -2, "\t-C num     : limit on the number of conflicts [default = %d]\n", nConfs );
    Abc_Print( -2, "\t-T num     : runtime limit in seconds [default = %d]\n", nTimeLimit );
    Abc_Print( -2, "\t-s         : expect a satisfiable problem [default = %s]\n", fSat ? "yes": "no" );
    Abc_Print( -2, "\t-u         : expect an unsatisfiable problem [default = %s]\n", fUnsat ? "yes": "no" );
    Abc_Print( -2, "\t-c         : prints satisfying assignment if satisfiable [default = %s]\n", fPrintCex ? "yes": "no" );
    Abc_Print( -2, "\t-k         : calls Kissat through programmable APIs [default = %s]\n", fKissat ? "yes": "no" );
    Abc_Print( -2, "\t-v         : prints verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-A num     : string containing additional command-line args for the Kissat binary [default = %s]\n", pArgs ? pArgs : "unused" );
    Abc_Print( -2, "\t             (in particular, <&kissat -A \"--help\"> prints all command-line args of Kissat)\n" );
    Abc_Print( -2, "\t<file.cnf> : (optional) CNF file to solve\n");
    Abc_Print( -2, "\t-h         : print the command usage\n");
    Abc_Print( -2, "\n\t             The solver was integrated into ABC by Yukio Miyasaka\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPSat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int RetValue;
    int c;
    int nAlgo;
    int nPartSize;
    int nConfPart;
    int nConfTotal;
    int fAlignPol;
    int fSynthesize;
    int fVerbose;
    abctime clk;

    extern int Abc_NtkPartitionedSat( Abc_Ntk_t * pNtk, int nAlgo, int nPartSize, int nConfPart, int nConfTotal, int fAlignPol, int fSynthesize, int fVerbose );
    // set defaults
    nAlgo       =        0;
    nPartSize   =    10000;
    nConfPart   =        0;
    nConfTotal  =  1000000;
    fAlignPol   =        1;
    fSynthesize =        0;
    fVerbose    =        1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "APCpsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            nAlgo = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nAlgo < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nPartSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPartSize < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfTotal = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfTotal < 0 )
                goto usage;
            break;
        case 'p':
            fAlignPol ^= 1;
            break;
        case 's':
            fSynthesize ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkLatchNum(pNtk) > 0 )
    {
        Abc_Print( -1, "Currently can only solve the miter for combinational circuits.\n" );
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }

    clk = Abc_Clock();
    RetValue = Abc_NtkPartitionedSat( pNtk, nAlgo, nPartSize, nConfPart, nConfTotal, fAlignPol, fSynthesize, fVerbose );
    // verify that the pattern is correct
    if ( RetValue == 0 && Abc_NtkPoNum(pNtk) == 1 )
    {
        //int i;
        //Abc_Obj_t * pObj;
        int * pSimInfo = Abc_NtkVerifySimulatePattern( pNtk, pNtk->pModel );
        if ( pSimInfo[0] != 1 )
            Abc_Print( 1, "ERROR in Abc_NtkMiterSat(): Generated counter example is invalid.\n" );
        ABC_FREE( pSimInfo );
        /*
        // print model
        Abc_NtkForEachPi( pNtk, pObj, i )
        {
            Abc_Print( -1, "%d", (int)(pNtk->pModel[i] > 0) );
            if ( i == 70 )
                break;
        }
        Abc_Print( -1, "\n" );
        */
    }

    if ( RetValue == -1 )
        Abc_Print( 1, "UNDECIDED      " );
    else if ( RetValue == 0 )
        Abc_Print( 1, "SATISFIABLE    " );
    else
        Abc_Print( 1, "UNSATISFIABLE  " );
    //Abc_Print( -1, "\n" );
    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
    return 0;

usage:
    Abc_Print( -2, "usage: psat [-APC num] [-psvh]\n" );
    Abc_Print( -2, "\t         solves the combinational miter using partitioning\n" );
    Abc_Print( -2, "\t         (derives CNF from the current network and leave it unchanged)\n" );
    Abc_Print( -2, "\t         for multi-output miters, tries to prove that the AND of POs is always 0\n" );
    Abc_Print( -2, "\t         (if POs should be ORed instead of ANDed, use command \"orpos\")\n" );
    Abc_Print( -2, "\t-A num : partitioning algorithm [default = %d]\n", nAlgo );
    Abc_Print( -2, "\t         0 : no partitioning\n" );
    Abc_Print( -2, "\t         1 : partitioning by level\n" );
    Abc_Print( -2, "\t         2 : DFS post-order\n" );
    Abc_Print( -2, "\t         3 : DFS pre-order\n" );
    Abc_Print( -2, "\t         4 : bit-slicing\n" );
    Abc_Print( -2, "\t         partitions are ordered by level (high level first)\n" );
    Abc_Print( -2, "\t-P num : limit on the partition size [default = %d]\n", nPartSize );
    Abc_Print( -2, "\t-C num : limit on the number of conflicts [default = %d]\n", nConfTotal );
    Abc_Print( -2, "\t-p     : align polarity of SAT variables [default = %s]\n", fAlignPol? "yes": "no" );
    Abc_Print( -2, "\t-s     : apply logic synthesis to each partition [default = %s]\n", fSynthesize? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandProve( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkTemp;
    Prove_Params_t Params, * pParams = &Params;
    int c, RetValue;
    abctime clk;

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    Prove_ParamsSetDefault( pParams );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NCFGLIrfbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nItersMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nItersMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nMiteringLimitStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nMiteringLimitStart < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nFraigingLimitStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nFraigingLimitStart < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nFraigingLimitMulti = (float)atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nFraigingLimitMulti < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nMiteringLimitLast = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nMiteringLimitLast < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pParams->nTotalInspectLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParams->nTotalInspectLimit < 0 )
                goto usage;
            break;
        case 'r':
            pParams->fUseRewriting ^= 1;
            break;
        case 'f':
            pParams->fUseFraiging ^= 1;
            break;
        case 'b':
            pParams->fUseBdds ^= 1;
            break;
        case 'v':
            pParams->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkLatchNum(pNtk) > 0 )
    {
        Abc_Print( -1, "Currently can only solve the miter for combinational circuits.\n" );
        return 0;
    }
    if ( Abc_NtkCoNum(pNtk) != 1 )
    {
        Abc_Print( -1, "Currently can only solve the miter with one output.\n" );
        return 0;
    }
    clk = Abc_Clock();

    if ( Abc_NtkIsStrash(pNtk) )
        pNtkTemp = Abc_NtkDup( pNtk );
    else
        pNtkTemp = Abc_NtkStrash( pNtk, 0, 0, 0 );

    RetValue = Abc_NtkMiterProve( &pNtkTemp, pParams );

    // verify that the pattern is correct
    if ( RetValue == 0 )
    {
        int * pSimInfo = Abc_NtkVerifySimulatePattern( pNtk, pNtkTemp->pModel );
        if ( pSimInfo[0] != 1 )
            Abc_Print( 1, "ERROR in Abc_NtkMiterProve(): Generated counter-example is invalid.\n" );
        ABC_FREE( pSimInfo );
    }
    pAbc->Status = RetValue;
    if ( RetValue == -1 )
        Abc_Print( 1, "UNDECIDED      " );
    else if ( RetValue == 0 )
        Abc_Print( 1, "SATISFIABLE    " );
    else
        Abc_Print( 1, "UNSATISFIABLE  " );
    //Abc_Print( -1, "\n" );

    Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: prove [-NCFGLI num] [-rfbvh]\n" );
    Abc_Print( -2, "\t         solves combinational miter by rewriting, FRAIGing, and SAT\n" );
    Abc_Print( -2, "\t         replaces the current network by the cone modified by rewriting\n" );
    Abc_Print( -2, "\t         (there is also newer CEC command \"iprove\")\n" );
    Abc_Print( -2, "\t-N num : max number of iterations [default = %d]\n", pParams->nItersMax );
    Abc_Print( -2, "\t-C num : max starting number of conflicts in mitering [default = %d]\n", pParams->nMiteringLimitStart );
    Abc_Print( -2, "\t-F num : max starting number of conflicts in fraiging [default = %d]\n", pParams->nFraigingLimitStart );
    Abc_Print( -2, "\t-G num : multiplicative coefficient for fraiging [default = %d]\n", (int)pParams->nFraigingLimitMulti );
    Abc_Print( -2, "\t-L num : max last-gasp number of conflicts in mitering [default = %d]\n", pParams->nMiteringLimitLast );
    Abc_Print( -2, "\t-I num : max number of clause inspections in all SAT calls [default = %d]\n", (int)pParams->nTotalInspectLimit );
    Abc_Print( -2, "\t-r     : toggle the use of rewriting [default = %s]\n", pParams->fUseRewriting? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle the use of FRAIGing [default = %s]\n", pParams->fUseFraiging? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle the use of BDDs [default = %s]\n", pParams->fUseBdds? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", pParams->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDebug( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    extern void Abc_NtkAutoDebug( Abc_Ntk_t * pNtk, int (*pFuncError) (Abc_Ntk_t *) );
    extern int Abc_NtkRetimeDebug( Abc_Ntk_t * pNtk );
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsLogic(pNtk) )
    {
        Abc_Print( -1, "This command is applicable to logic networks.\n" );
        return 1;
    }

    Abc_NtkAutoDebug( pNtk, Abc_NtkRetimeDebug );
    return 0;

usage:
    Abc_Print( -2, "usage: debug [-h]\n" );
    Abc_Print( -2, "\t        performs automated debugging of the given procedure\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandEco( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc_NtkEco( char * pFileNames[3] );
    char * pFileNames[3] = {NULL};  int c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( globalUtilOptind + 3 != argc )
    {
        Abc_Print( -1, "Expecting three file names on the command line.\n" );
        return 1;
    }
    for ( c = 0; c < 3; c++ )
        pFileNames[c] = argv[globalUtilOptind+c];
    Abc_NtkEco( pFileNames );
    return 0;

usage:
    Abc_Print( -2, "usage: eco [-h]\n" );
    Abc_Print( -2, "\t        performs experimental ECO computation\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBmc( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int nFrames;
    int nSizeMax;
    int nBTLimit;
    int nBTLimitAll;
    int nNodeDelta;
    int fRewrite;
    int fNewAlgo;
    int nCofFanLit;
    int fVerbose;
    int iFrames;
    int fUseSatoko;
    char * pLogFileName = NULL;

    extern int Abc_NtkDarBmc( Abc_Ntk_t * pNtk, int nStart, int nFrames, int nSizeMax, int nNodeDelta, int nTimeOut, int nBTLimit, int nBTLimitAll, int fRewrite, int fNewAlgo, int fOrDecomp, int nCofFanLit, int fVerbose, int * piFrames, int fUseSatoko );
    // set defaults
    nFrames     =       20;
    nSizeMax    =   100000;
    nBTLimit    =        0;
    nBTLimitAll =        0;
    nNodeDelta  =     1000;
    fRewrite    =        0;
    fNewAlgo    =        1;
    nCofFanLit  =        0;
    fVerbose    =        0;
    fUseSatoko  =        0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FNCGDLrsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSizeMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimit < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimitAll = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimitAll < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nNodeDelta = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodeDelta < 0 )
                goto usage;
            break;
/*
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nCofFanLit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCofFanLit < 0 )
                goto usage;
            break;
*/
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'r':
            fRewrite ^= 1;
            break;
        case 'a':
            fNewAlgo ^= 1;
            break;
        case 's':
            fUseSatoko ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( -1, "Does not work for combinational networks.\n" );
        return 0;
    }
    if ( pAbc->fBatchMode && (pAbc->Status == 0 || pAbc->Status == 1) ) 
    { 
        Abc_Print( 1, "The miters is already solved; skipping the command.\n" ); 
        return 0;
    }
    pAbc->Status = Abc_NtkDarBmc( pNtk, 0, nFrames, nSizeMax, nNodeDelta, 0, nBTLimit, nBTLimitAll, fRewrite, fNewAlgo, 0, nCofFanLit, fVerbose, &iFrames, fUseSatoko );
    pAbc->nFrames = iFrames;
    Abc_FrameReplaceCex( pAbc, &pNtk->pSeqModel );
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "bmc" );
    return 0;

usage:
    Abc_Print( -2, "usage: bmc [-FNC num] [-L file] [-rcsvh]\n" );
    Abc_Print( -2, "\t         performs bounded model checking with static unrolling\n" );
    Abc_Print( -2, "\t-F num : the number of time frames [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-N num : the max number of nodes in the frames [default = %d]\n", nSizeMax );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", nBTLimit );
//    Abc_Print( -2, "\t-L num : the limit on fanout count of resets/enables to cofactor [default = %d]\n", nCofFanLit );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n", pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-r     : toggle the use of rewriting [default = %s]\n", fRewrite? "yes": "no" );
//    Abc_Print( -2, "\t-a     : toggle SAT sweeping and SAT solving [default = %s]\n", fNewAlgo? "SAT solving": "SAT sweeping" );
    Abc_Print( -2, "\t-s     : toggle using Satoko by Bruno Schmitt [default = %s]\n", fUseSatoko? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBmc2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    int nStart;
    int nFrames;
    int nSizeMax;
    int nBTLimit;
    int nBTLimitAll;
    int nNodeDelta;
    int nTimeOut;
    int fRewrite;
    int fNewAlgo;
    int fOrDecomp;
    int fVerbose;
    int iFrames;
    int fUseSatoko;
    char * pLogFileName = NULL;

    extern int Abc_NtkDarBmc( Abc_Ntk_t * pNtk, int nStart, int nFrames, int nSizeMax, int nNodeDelta, int nTimeOut, int nBTLimit, int nBTLimitAll, int fRewrite, int fNewAlgo, int fOrDecomp, int nCofFanLit, int fVerbose, int * piFrames, int fUseSatoko );

    // set defaults
    nStart      =        0;
    nFrames     =        0;
    nSizeMax    =   200000;
    nBTLimit    =        0;
    nBTLimitAll =        0;
    nNodeDelta  =     2000;
    nTimeOut    =        0;
    fRewrite    =        0;
    fNewAlgo    =        0;
    fOrDecomp   =        0;
    fVerbose    =        0;
    fUseSatoko  =        0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "SFNTCGDLrusvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nStart < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSizeMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimit < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimitAll = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimitAll < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nNodeDelta = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodeDelta < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'r':
            fRewrite ^= 1;
            break;
        case 'a':
            fNewAlgo ^= 1;
            break;
        case 'u':
            fOrDecomp ^= 1;
            break;
        case 's':
            fUseSatoko ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( -1, "Does not work for combinational networks.\n" );
        return 0;
    }
    if ( pAbc->fBatchMode && (pAbc->Status == 0 || pAbc->Status == 1) ) 
    { 
        Abc_Print( 1, "The miters is already solved; skipping the command.\n" ); 
        return 0;
    }
    pAbc->Status = Abc_NtkDarBmc( pNtk, nStart, nFrames, nSizeMax, nNodeDelta, nTimeOut, nBTLimit, nBTLimitAll, fRewrite, fNewAlgo, fOrDecomp, 0, fVerbose, &iFrames, fUseSatoko );
    pAbc->nFrames = iFrames;
    Abc_FrameReplaceCex( pAbc, &pNtk->pSeqModel );
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "bmc2" );
    return 0;

usage:
    Abc_Print( -2, "usage: bmc2 [-SFTCGD num] [-L file] [-usvh]\n" );
    Abc_Print( -2, "\t         performs bounded model checking with dynamic unrolling\n" );
    Abc_Print( -2, "\t-S num : the starting time frame [default = %d]\n", nStart );
    Abc_Print( -2, "\t-F num : the max number of time frames (0 = unused) [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n", nTimeOut );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-G num : the max number of conflicts globally [default = %d]\n", nBTLimitAll );
    Abc_Print( -2, "\t-D num : the delta in the number of nodes [default = %d]\n", nNodeDelta );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n", pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-u     : toggle performing structural OR-decomposition [default = %s]\n", fOrDecomp? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle using Satoko by Bruno Schmitt [default = %s]\n", fUseSatoko? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBmc3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_NtkDarBmc3( Abc_Ntk_t * pNtk, Saig_ParBmc_t * pPars, int fOrDecomp );
    Saig_ParBmc_t Pars, * pPars = &Pars;
    Abc_Ntk_t * pNtkRes, * pNtk = Abc_FrameReadNtk(pAbc);
    Vec_Ptr_t * vSeqModelVec = NULL;
    Vec_Int_t * vStatuses = NULL;
    char * pLogFileName = NULL;
    int fOrDecomp = 0;
    int c;
    Saig_ParBmcSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "SFTHGCDJIPQRLWaxdursgvzh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nStart < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOut < 0 )
                goto usage;
            break;
        case 'H':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-H\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOutOne = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOutOne < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOutGap = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOutGap < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nConfLimit < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nConfLimitJump = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nConfLimitJump < 0 )
                goto usage;
            break;
        case 'J':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-J\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesJump = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesJump < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nPisAbstract = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nPisAbstract < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLearnedStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLearnedStart < 0 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLearnedDelta = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLearnedDelta < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLearnedPerce = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLearnedPerce < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by a file name.\n" );
                goto usage;
            }
            pPars->pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'a':
            pPars->fSolveAll ^= 1;
            break;
        case 'x':
            pPars->fStoreCex ^= 1;
            break;
        case 'd':
            pPars->fDropSatOuts ^= 1;
            break;
        case 'u':
            fOrDecomp ^= 1;
            break;
        case 'r':
            pPars->fNoRestarts ^= 1;
            break;
        case 's':
            pPars->fUseSatoko ^= 1;
            break;
        case 'g':
            pPars->fUseGlucose ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'z':
            pPars->fNotVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( -1, "Does not work for combinational networks.\n" );
        return 0;
    }
    if ( Abc_NtkConstrNum(pNtk) > 0 )
    {
        Abc_Print( -1, "Constraints have to be folded (use \"fold\").\n" );
        return 0;
    }
    if ( pAbc->fBatchMode && (pAbc->Status == 0 || pAbc->Status == 1) ) 
    { 
        Abc_Print( 1, "The miters is already solved; skipping the command.\n" ); 
        return 0;
    }
    pPars->fUseBridge = pAbc->fBridgeMode;
    pAbc->Status = Abc_NtkDarBmc3( pNtk, pPars, fOrDecomp );
    pAbc->nFrames = pNtk->vSeqModelVec ? -1 : pPars->iFrame;
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "bmc3" );
    vSeqModelVec = pNtk->vSeqModelVec;  pNtk->vSeqModelVec = NULL;
    if ( pPars->fSolveAll && pPars->fDropSatOuts )
    {
        if ( vSeqModelVec == NULL )
            Abc_Print( 1,"The array of counter-examples is not available.\n" );
        else if ( Vec_PtrSize(vSeqModelVec) != Abc_NtkPoNum(pNtk) )
            Abc_Print( 1,"The array size does not match the number of outputs.\n" );
        else
        {
            extern void Abc_NtkDropSatOutputs( Abc_Ntk_t * pNtk, Vec_Ptr_t * vCexes, int fVerbose );
            Abc_NtkDropSatOutputs( pNtk, vSeqModelVec, pPars->fVerbose );
            pNtkRes = Abc_NtkDarLatchSweep( pNtk, 1, 1, 1, 0, -1, -1, 0, 0 );
            if ( pNtkRes == NULL )
            {
                Abc_Print( -1, "Removing SAT outputs has failed.\n" );
                return 1;
            }
            Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
        }
    }
    vStatuses = Abc_FrameDeriveStatusArray( vSeqModelVec );
    Abc_FrameReplacePoStatuses( pAbc, &vStatuses );
    if ( vSeqModelVec )
        Abc_FrameReplaceCexVec( pAbc, &vSeqModelVec );
    else
        Abc_FrameReplaceCex( pAbc, &pNtk->pSeqModel );
    return 0;

usage:
    Abc_Print( -2, "usage: bmc3 [-SFTHGCDJIPQR num] [-LW file] [-axdursgvzh]\n" );
    Abc_Print( -2, "\t         performs bounded model checking with dynamic unrolling\n" );
    Abc_Print( -2, "\t-S num : the starting time frame [default = %d]\n", pPars->nStart );
    Abc_Print( -2, "\t-F num : the max number of time frames (0 = unused) [default = %d]\n",      pPars->nFramesMax );
    Abc_Print( -2, "\t-T num : runtime limit, in seconds [default = %d]\n",                       pPars->nTimeOut );
    Abc_Print( -2, "\t-H num : runtime limit per output, in milliseconds (with \"-a\") [default = %d]\n",    pPars->nTimeOutOne );
    Abc_Print( -2, "\t-G num : runtime gap since the last CEX, in seconds [default = %d]\n",      pPars->nTimeOutGap );
    Abc_Print( -2, "\t-C num : max conflicts at an output [default = %d]\n",                      pPars->nConfLimit );
    Abc_Print( -2, "\t-D num : max conflicts after jumping (0 = infinity) [default = %d]\n",      pPars->nConfLimitJump );
    Abc_Print( -2, "\t-J num : the number of timeframes to jump (0 = not used) [default = %d]\n", pPars->nFramesJump );
    Abc_Print( -2, "\t-I num : the number of PIs to abstract [default = %d]\n",                   pPars->nPisAbstract );
    Abc_Print( -2, "\t-P num : the max number of learned clauses to keep (0=unused) [default = %d]\n", pPars->nLearnedStart );
    Abc_Print( -2, "\t-Q num : delta value for learned clause removal [default = %d]\n",          pPars->nLearnedDelta );
    Abc_Print( -2, "\t-R num : percentage to keep for learned clause removal [default = %d]\n",   pPars->nLearnedPerce );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n",                               pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-W file: the log file name with per-output details [default = %s]\n",       pPars->pLogFileName ? pPars->pLogFileName : "no logging" );
    Abc_Print( -2, "\t-a     : solve all outputs (do not stop when one is SAT) [default = %s]\n", pPars->fSolveAll? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggle storing CEXes when solving all outputs [default = %s]\n",   pPars->fStoreCex? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle dropping (replacing by 0) SAT outputs [default = %s]\n",    pPars->fDropSatOuts? "yes": "no" );
    Abc_Print( -2, "\t-u     : toggle performing structural OR-decomposition [default = %s]\n",   fOrDecomp? "yes": "not" );
    Abc_Print( -2, "\t-r     : toggle disabling periodic restarts [default = %s]\n",              pPars->fNoRestarts? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle using Satoko by Bruno Schmitt [default = %s]\n", pPars->fUseSatoko? "yes": "no" );
    Abc_Print( -2, "\t-g     : toggle using Glucose 3.0 by Gilles Audemard and Laurent Simon [default = %s]\n",pPars->fUseGlucose? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n",                           pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle suppressing report about solved outputs [default = %s]\n",  pPars->fNotVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBmcInter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Inter_ManParams_t Pars, * pPars = &Pars;
    Abc_Ntk_t * pNtkRes, * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    char * pLogFileName = NULL;

    extern int Abc_NtkDarBmcInter( Abc_Ntk_t * pNtk, Inter_ManParams_t * pPars, Abc_Ntk_t ** ppNtkRes );
    // set defaults
    Inter_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CFTKLIrtpomcgbqkdivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSecLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSecLimit < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesK = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesK < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a file name.\n" );
                goto usage;
            }
            pPars->pFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'r':
            pPars->fRewrite ^= 1;
            break;
        case 't':
            pPars->fTransLoop ^= 1;
            break;
        case 'p':
            pPars->fUsePudlak ^= 1;
            break;
        case 'o':
            pPars->fUseOther ^= 1;
            break;
        case 'm':
            pPars->fUseMiniSat ^= 1;
            break;
        case 'c':
            pPars->fCheckKstep ^= 1;
            break;
        case 'g':
            pPars->fUseBias ^= 1;
            break;
        case 'b':
            pPars->fUseBackward ^= 1;
            break;
        case 'q':
            pPars->fUseTwoFrames ^= 1;
            break;
        case 'k':
            pPars->fUseSeparate ^= 1;
            break;
        case 'd':
            pPars->fDropSatOuts ^= 1;
            break;
        case 'i':
            pPars->fDropInvar ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }
    if ( pAbc->fBatchMode && (pAbc->Status == 0 || pAbc->Status == 1) ) 
    { 
        Abc_Print( 1, "The miters is already solved; skipping the command.\n" ); 
        return 0;
    }
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( -1, "Does not work for combinational networks.\n" );
        return 0;
    }
    if ( Abc_NtkConstrNum(pNtk) > 0 )
    {
        Abc_Print( -1, "Cannot run interpolation with constraints. Use \"fold\".\n" );
        return 0;
    }
    if ( Abc_NtkPoNum(pNtk)-Abc_NtkConstrNum(pNtk) != 1 )
    {
        if ( Abc_NtkConstrNum(pNtk) > 0 )
        {
            Abc_Print( 1,"Cannot solve multiple-output miter with constraints.\n" );
            return 0;
        }
        if ( pPars->fUseSeparate )
        {
            Abc_Print( 0, "Each of %d outputs will be solved separately.\n", Abc_NtkPoNum(pNtk) );
            pAbc->Status = Abc_NtkDarBmcInter( pNtk, pPars, &pNtkRes );
            Abc_FrameReplaceCex( pAbc, &pNtk->pSeqModel );
            if ( pNtkRes == NULL )
            {
                Abc_Print( -1, "Generating resulting network has failed.\n" );
                return 0;
            }
            Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
        }
        else
        {
            Abc_Ntk_t * pNtkNew = Abc_NtkDup( pNtk );
            Abc_Print( 0, "All %d outputs will be ORed together.\n", Abc_NtkPoNum(pNtk) );
            if ( !Abc_NtkCombinePos( pNtkNew, 0, 0 ) )
            {
                Abc_NtkDelete( pNtkNew );
                Abc_Print( -1, "ORing outputs has failed.\n" );
                return 0;
            }
            pAbc->Status = Abc_NtkDarBmcInter( pNtkNew, pPars, NULL );
            if ( pAbc->Status == 0 )
            {
                Aig_Man_t * pMan = Abc_NtkToDar( pNtk, 0, 1 );
                pNtkNew->pSeqModel->iPo = Saig_ManFindFailedPoCex( pMan, pNtkNew->pSeqModel );
                Aig_ManStop( pMan );
            }
            Abc_FrameReplaceCex( pAbc, &pNtkNew->pSeqModel );
            Abc_NtkDelete( pNtkNew );
        }
        pAbc->nFrames = -1;
    }
    else
    {
        pAbc->Status  = Abc_NtkDarBmcInter( pNtk, pPars, NULL );
        pAbc->nFrames = pPars->iFrameMax;
        Abc_FrameReplaceCex( pAbc, &pNtk->pSeqModel );
    }
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "int" );
    return 0;

usage:
    Abc_Print( -2, "usage: int [-CFTK num] [-LI file] [-irtpomcgbqkdvh]\n" );
    Abc_Print( -2, "\t         uses interpolation to prove the property\n" );
    Abc_Print( -2, "\t-C num : the limit on conflicts for one SAT run [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-F num : the limit on number of frames to unroll [default = %d]\n", pPars->nFramesMax );
    Abc_Print( -2, "\t-T num : the limit on runtime per output in seconds [default = %d]\n", pPars->nSecLimit );
    Abc_Print( -2, "\t-K num : the number of steps in inductive checking [default = %d]\n", pPars->nFramesK );
    Abc_Print( -2, "\t         (K = 1 works in all cases; K > 1 works without -t and -b)\n" );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n", pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-I file: the file name for dumping interpolant [default = \"%s\"]\n", pPars->pFileName ? pPars->pFileName : "invar.aig" );
    Abc_Print( -2, "\t-i     : toggle dumping interpolant/invariant into a file [default = %s]\n", pPars->fDropInvar? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle rewriting of the unrolled timeframes [default = %s]\n", pPars->fRewrite? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle adding transition into the initial state [default = %s]\n", pPars->fTransLoop? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle using original Pudlak's interpolation procedure [default = %s]\n", pPars->fUsePudlak? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle using optimized Pudlak's interpolation procedure [default = %s]\n", pPars->fUseOther? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle using MiniSat-1.14p (now, Windows-only) [default = %s]\n", pPars->fUseMiniSat? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle using inductive containment check [default = %s]\n", pPars->fCheckKstep? "yes": "no" );
    Abc_Print( -2, "\t-g     : toggle using bias for global variables using SAT [default = %s]\n", pPars->fUseBias? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle using backward interpolation (works with -t) [default = %s]\n", pPars->fUseBackward? "yes": "no" );
    Abc_Print( -2, "\t-q     : toggle using property in two last timeframes [default = %s]\n", pPars->fUseTwoFrames? "yes": "no" );
    Abc_Print( -2, "\t-k     : toggle solving each output separately [default = %s]\n", pPars->fUseSeparate? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle dropping (replacing by 0) SAT outputs (with -k is used) [default = %s]\n", pPars->fDropSatOuts? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandIndcut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int nFrames;
    int nPref;
    int nClauses;
    int nLutSize;
    int nLevels;
    int nCutsMax;
    int nBatches;
    int fStepUp;
    int fBmc;
    int fRegs;
    int fTarget;
    int fVerbose;
    int fVeryVerbose;
    int c;
    extern int Abc_NtkDarClau( Abc_Ntk_t * pNtk, int nFrames, int nPref, int nClauses, int nLutSize, int nLevels, int nCutsMax, int nBatches, int fStepUp, int fBmc, int fRegs, int fTarget, int fVerbose, int fVeryVerbose );
    // set defaults
    nFrames      =    1;
    nPref        =    0;
    nClauses     = 5000;
    nLutSize     =    4;
    nLevels      =    8;
    nCutsMax     =   16;
    nBatches     =    1;
    fStepUp      =    0;
    fBmc         =    1;
    fRegs        =    1;
    fTarget      =    1;
    fVerbose     =    0;
    fVeryVerbose =    0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FPCMLNBsbrtvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nPref = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPref < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nClauses = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nClauses < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevels = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevels < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutsMax < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            nBatches = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBatches < 0 )
                goto usage;
            break;
        case 's':
            fStepUp ^= 1;
            break;
        case 'b':
            fBmc ^= 1;
            break;
        case 'r':
            fRegs ^= 1;
            break;
        case 't':
            fTarget ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }
    if ( nLutSize > 12 )
    {
        Abc_Print( -1, "The cut size should be not exceed 12.\n" );
        return 0;
    }
    Abc_NtkDarClau( pNtk, nFrames, nPref, nClauses, nLutSize, nLevels, nCutsMax, nBatches, fStepUp, fBmc, fRegs, fTarget, fVerbose, fVeryVerbose );
    return 0;
usage:
    Abc_Print( -2, "usage: indcut [-FPCMLNB num] [-sbrtvh]\n" );
    Abc_Print( -2, "\t         K-step induction strengthened with cut properties\n" );
    Abc_Print( -2, "\t-F num : number of time frames for induction (1=simple) [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-P num : number of time frames in the prefix (0=no prefix) [default = %d]\n", nPref );
    Abc_Print( -2, "\t-C num : the max number of clauses to use for strengthening [default = %d]\n", nClauses );
    Abc_Print( -2, "\t-M num : the cut size (2 <= M <= 12) [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-L num : the max number of levels for cut computation [default = %d]\n", nLevels );
    Abc_Print( -2, "\t-N num : the max number of cuts to compute at a node [default = %d]\n", nCutsMax );
    Abc_Print( -2, "\t-B num : the max number of invariant batches to try [default = %d]\n", nBatches );
    Abc_Print( -2, "\t-s     : toggle increment cut size in each batch [default = %s]\n", fStepUp? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle enabling BMC check [default = %s]\n", fBmc? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle enabling register clauses [default = %s]\n", fRegs? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle proving target / computing don't-cares [default = %s]\n", fTarget? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
//    Abc_Print( -2, "\t-w     : toggle printing very verbose information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandEnlarge( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int nFrames;
    int fVerbose;
    int c;
    extern Abc_Ntk_t * Abc_NtkDarEnlarge( Abc_Ntk_t * pNtk, int nFrames, int fVerbose );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nFrames      = 5;
    fVerbose     = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 1 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }

    // modify the current network
    pNtkRes = Abc_NtkDarEnlarge( pNtk, nFrames, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Target enlargement has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;
usage:
    Abc_Print( -2, "usage: enlarge [-F <num>] [-vh]\n" );
    Abc_Print( -2, "\t           performs structural K-step target enlargement\n" );
    Abc_Print( -2, "\t-F <num> : the number of timeframes to unroll (<num> > 0) [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-v       : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTempor( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkDarTempor( Abc_Ntk_t * pNtk, int nFrames, int TimeOut, int nConfLimit, int fUseBmc, int fUseTransSigs, int fVerbose, int fVeryVerbose );
    Abc_Ntk_t * pNtkRes, * pNtk = Abc_FrameReadNtk(pAbc);
    int nFrames       =       0;
    int TimeOut       =     300;
    int nConfMax      =  100000;
    int fUseBmc       =       1;
    int fUseTransSigs =       0;
    int fUpdateCex    =       0;
    int fVerbose      =       0;
    int fVeryVerbose  =       0;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FTCbscvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeOut < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfMax < 0 )
                goto usage;
            break;
        case 'b':
            fUseBmc ^= 1;
            break;
        case 's':
            fUseTransSigs ^= 1;
            break;
        case 'c':
            fUpdateCex ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -2, "There is no current network.\n");
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -2, "The current network is not an AIG (run \"strash\").\n");
        return 0;
    }
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        Abc_Print( 0, "The current network is combinational.\n");
        return 0;
    }
    if ( Abc_NtkPiNum(pNtk) == 0 )
    {
        Abc_Print( 0, "The current network does not have primary inputs. Use \"addpi\".\n");
        return 0;
    }
    if ( fUpdateCex )
    {
        Abc_Cex_t * pCexNew;
        if ( pAbc->pCex == NULL )
        {
            Abc_Print( -1, "Counter-example is not available.\n" );
            return 1;
        }
        if ( pAbc->pCex->nPis % Abc_NtkPiNum(pNtk) != 0 )
        {
            Abc_Print( -1, "PI count of the CEX is not a multiple of PI count of the current AIG.\n" );
            return 1;
        }
        pCexNew = Abc_CexTransformTempor( pAbc->pCex, Abc_NtkPiNum(pNtk), Abc_NtkPoNum(pNtk), Abc_NtkLatchNum(pNtk) );
        Abc_FrameReplaceCex( pAbc, &pCexNew );
        return 0;
    }
    // modify the current network
    pNtkRes = Abc_NtkDarTempor( pNtk, nFrames, TimeOut, nConfMax, fUseBmc, fUseTransSigs, fVerbose, fVeryVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( -1, "Temporal decomposition has failed.\n" );
        return 1;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;

usage:
    Abc_Print( -2, "usage: tempor [-FTC <num>] [-bscvwh]\n" );
    Abc_Print( -2, "\t           performs temporal decomposition\n" );
    Abc_Print( -2, "\t-F <num> : init logic timeframe count (0 = use leading length) [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-T <num> : runtime limit in seconds for BMC (0=unused) [default = %d]\n", TimeOut );
    Abc_Print( -2, "\t-C <num> : max number of SAT conflicts in BMC (0=unused) [default = %d]\n", nConfMax );
    Abc_Print( -2, "\t-b       : toggle running BMC2 on the init frames [default = %s]\n", fUseBmc? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggle using transient signals [default = %s]\n", fUseTransSigs? "yes": "no" );
    Abc_Print( -2, "\t-c       : update the current CEX derived for a new AIG after \"tempor\"\n" );
    Abc_Print( -2, "\t           to match the current AIG (the one before \"tempor\") [default = %s]\n", fUpdateCex? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing ternary state space [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandInduction( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int nTimeOut;
    int nFramesMax;
    int nConfMax;
    int fUnique;
    int fUniqueAll;
    int fGetCex;
    int fVerbose;
    int fVeryVerbose;
    int c;
    extern int Abc_NtkDarInduction( Abc_Ntk_t * pNtk, int nTimeOut, int nFramesMax, int nConfMax, int fUnique, int fUniqueAll, int fGetCex, int fVerbose, int fVeryVerbose );
    // set defaults
    nTimeOut     =     0;
    nFramesMax   =     0;
    nConfMax     =     0;
    fUnique      =     0;
    fUniqueAll   =     0;
    fGetCex      =     0;
    fVerbose     =     0;
    fVeryVerbose =     0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FCTuaxvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFramesMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 'u':
            fUnique ^= 1;
            break;
        case 'a':
            fUniqueAll ^= 1;
            break;
        case 'x':
            fGetCex ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }
    if ( Abc_NtkPoNum(pNtk) != 1 )
    {
        Abc_Print( -1, "Currently this command works only for single-output miter.\n" );
        return 0;
    }
    if ( fUnique && fUniqueAll )
    {
        Abc_Print( -1, "Only one of the options, \"-u\" or \"-a\", should be selected.\n" );
        return 0;
    }

    // modify the current network
    pAbc->Status = Abc_NtkDarInduction( pNtk, nTimeOut, nFramesMax, nConfMax, fUnique, fUniqueAll, fGetCex, fVerbose, fVeryVerbose );
    if ( fGetCex )
    {
        Abc_FrameReplaceCex( pAbc, &pNtk->pSeqModel );
        Abc_Print( 1,"The current CEX in ABC is set to be the CEX to induction.\n" );
    }
    return 0;
usage:
    Abc_Print( -2, "usage: ind [-FCT num] [-uaxvwh]\n" );
    Abc_Print( -2, "\t         runs the inductive case of the K-step induction\n" );
    Abc_Print( -2, "\t-F num : the max number of timeframes [default = %d]\n", nFramesMax );
    Abc_Print( -2, "\t-C num : the max number of conflicts by SAT solver [default = %d]\n", nConfMax );
    Abc_Print( -2, "\t-T num : the limit on runtime per output in seconds [default = %d]\n", nTimeOut );
    Abc_Print( -2, "\t-u     : toggle adding uniqueness constraints on demand [default = %s]\n", fUnique? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle adding uniqueness constraints always [default = %s]\n", fUniqueAll? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggle returning CEX to induction for the top frame [default = %s]\n", fGetCex? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing additional verbose information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandConstr( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk;
    Abc_Ntk_t * pNtkRes;
    int c;
    int nFrames;
    int nConfs;
    int nProps;
    int fRemove;
    int fPurge;
    int fStruct;
    int fInvert;
    int fOldAlgo;
    int fVerbose;
    int nConstrs;
    extern void Abc_NtkDarConstr( Abc_Ntk_t * pNtk, int nFrames, int nConfs, int nProps, int fStruct, int fOldAlgo, int fVerbose );
    extern Abc_Ntk_t * Abc_NtkMakeOnePo( Abc_Ntk_t * pNtk, int Output, int nRange );

    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nFrames   =      1;
    nConfs    =   1000;
    nProps    =   1000;
    fRemove   =      0;
    fPurge    =      0;
    fStruct   =      0;
    fInvert   =      0;
    fOldAlgo  =      0;
    fVerbose  =      0;
    nConstrs  =     -1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FCPNrpsiavh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfs < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nProps = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nProps < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nConstrs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConstrs < 0 )
                goto usage;
            break;
        case 'r':
            fRemove ^= 1;
            break;
        case 'p':
            fPurge ^= 1;
            break;
        case 's':
            fStruct ^= 1;
            break;
        case 'i':
            fInvert ^= 1;
            break;
        case 'a':
            fOldAlgo ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }
    if ( fRemove )
    {
        if ( Abc_NtkConstrNum(pNtk) == 0 )
        {
            Abc_Print( -1, "Constraints are not defined.\n" );
            return 0;
        }

        if ( fPurge )
        {
            Abc_Print( 1, "Constraints are removed.\n" );
            pNtkRes = Abc_NtkMakeOnePo( pNtk, 0, Abc_NtkPoNum(pNtk) - Abc_NtkConstrNum(pNtk) );
            if ( pNtkRes == NULL )
            {
                Abc_Print( 1,"Transformation has failed.\n" );
                return 1;
            }
            // replace the current network
            Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
            pNtk = Abc_FrameReadNtk(pAbc);
        }
        else
            Abc_Print( 1, "Constraints are converted to be primary outputs.\n" );
        pNtk->nConstrs = 0;
        return 0;
    }
    // consider the case of manual constraint definition
    if ( nConstrs >= 0 )
    {
        if ( Abc_NtkIsComb(pNtk) )
            Abc_Print( 0, "The network is combinational.\n" );
        if ( Abc_NtkConstrNum(pNtk) > 0 )
            Abc_Print( 0, "The network currently has %d constraints.\n", Abc_NtkConstrNum(pNtk) );
        if ( nConstrs >= Abc_NtkPoNum(pNtk) )
        {
            Abc_Print( -1, "The number of constraints specified (%d) should be less than POs (%d).\n", nConstrs, Abc_NtkPoNum(pNtk) );
            return 0;
        }
        Abc_Print( 1, "Setting the last %d POs as constraint outputs.\n", nConstrs );
        pNtk->nConstrs = nConstrs;
        return 0;
    }
    // consider the case of already defined constraints
    if ( Abc_NtkConstrNum(pNtk) > 0 )
    {
        extern void Abc_NtkDarConstrProfile( Abc_Ntk_t * pNtk, int fVerbose );
        if ( fInvert )
        {
            Abc_NtkInvertConstraints( pNtk );
            if ( Abc_NtkConstrNum(pNtk) == 1 )
                Abc_Print( 1, "The output of %d constraint is complemented.\n", Abc_NtkConstrNum(pNtk) );
            else
                Abc_Print( 1, "The outputs of %d constraints are complemented.\n", Abc_NtkConstrNum(pNtk) );
        }
        if ( fVerbose )
            Abc_NtkDarConstrProfile( pNtk, fVerbose );
        return 0;
    }
    if ( Abc_NtkIsComb(pNtk) )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    // detect constraints using functional/structural methods
    Abc_NtkDarConstr( pNtk, nFrames, nConfs, nProps, fStruct, fOldAlgo, fVerbose );
    return 0;
usage:
    Abc_Print( -2, "usage: constr [-FCPN num] [-rpisavh]\n" );
    Abc_Print( -2, "\t         a toolkit for constraint manipulation\n" );
    Abc_Print( -2, "\t         if constraints are absent, detect them functionally\n" );
    Abc_Print( -2, "\t         if constraints are present, profiles them using random simulation\n" );
    Abc_Print( -2, "\t         (constraints fail when any of them becomes 1 in any timeframe)\n" );
    Abc_Print( -2, "\t-F num : the max number of timeframes to consider [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-C num : the max number of conflicts in SAT solving [default = %d]\n", nConfs );
    Abc_Print( -2, "\t-P num : the max number of propagations in SAT solving [default = %d]\n", nProps );
    Abc_Print( -2, "\t-N num : manually set the last <num> POs to be constraints [default = %d]\n", nConstrs );
    Abc_Print( -2, "\t-r     : manually remove the constraints, converting them to POs [default = %s]\n", fRemove? "yes": "no" );
    Abc_Print( -2, "\t-p     : remove constraints instead of converting them to POs [default = %s]\n", fPurge? "yes": "no" );
    Abc_Print( -2, "\t-i     : toggle inverting already defined constraints [default = %s]\n", fInvert? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle using structural detection methods [default = %s]\n", fStruct? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle fast implication detection [default = %s]\n", !fOldAlgo? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandUnfold( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int nFrames;
    int nConfs;
    int nProps;
    int fStruct;
    int fOldAlgo;
    int fVerbose;
    int c;
    extern Abc_Ntk_t * Abc_NtkDarUnfold( Abc_Ntk_t * pNtk, int nFrames, int nConfs, int nProps, int fStruct, int fOldAlgo, int fVerbose );
    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    nFrames   =      1;
    nConfs    =   1000;
    nProps    =   1000;
    fStruct   =      0;
    fOldAlgo  =      0;
    fVerbose  =      0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FCPsavh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfs < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nProps = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nProps < 0 )
                goto usage;
            break;
        case 's':
            fStruct ^= 1;
            break;
        case 'a':
            fOldAlgo ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( Abc_NtkIsComb(pNtk) && Abc_NtkPoNum(pNtk) > 1 )
    {
        Abc_Print( -1, "Combinational miter has more than one PO.\n" );
        return 0;
    }
    if ( Abc_NtkIsComb(pNtk) )
    {
        extern Gia_Man_t * Gia_ManDupWithConstr( Gia_Man_t * p );
        Gia_Man_t * pNew;
        Aig_Man_t * pAig = Abc_NtkToDar( pNtk, 0, 0 );
        Gia_Man_t * pGia = Gia_ManFromAigSimple( pAig );
        Aig_ManStop( pAig );
        pNew = Gia_ManDupWithConstr( pGia );
        Gia_ManStop( pGia );
        if ( pNew == NULL )
        {
            Abc_Print( -1, "Cannot extract constrains from the miter.\n" );
            return 0;
        }
        pAig = Gia_ManToAigSimple( pNew );
        Gia_ManStop( pNew );
        pNtkRes = Abc_NtkFromAigPhase( pAig );
        Aig_ManStop( pAig );
        ABC_FREE( pNtkRes->pName );
        pNtkRes->pName = Extra_UtilStrsav( pNtk->pName );
        // replace the current network
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }
    if ( Abc_NtkConstrNum(pNtk) > 0 )
    {
        Abc_Print( -1, "Constraints are already extracted.\n" );
        return 0;
    }
    if ( Abc_NtkPoNum(pNtk) > 1 && !fStruct )
    {
        Abc_Print( -1, "Functional constraint extraction works for single-output miters (use \"orpos\").\n" );
        return 0;
    }
    // modify the current network
    pNtkRes = Abc_NtkDarUnfold( pNtk, nFrames, nConfs, nProps, fStruct, fOldAlgo, fVerbose );
    if ( pNtkRes == NULL )
    {
        Abc_Print( 1,"Transformation has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;
usage:
    Abc_Print( -2, "usage: unfold [-FCP num] [-savh]\n" );
    Abc_Print( -2, "\t         unfold hidden constraints as separate outputs\n" );
    Abc_Print( -2, "\t-F num : the max number of timeframes to consider [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-C num : the max number of conflicts in SAT solving [default = %d]\n", nConfs );
    Abc_Print( -2, "\t-P num : the max number of constraint propagations [default = %d]\n", nProps );
    Abc_Print( -2, "\t-s     : toggle detecting structural constraints [default = %s]\n", fStruct? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle fast implication detection [default = %s]\n", !fOldAlgo? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandFold( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkRes;
    int fCompl;
    int fVerbose;
    int fSeqCleanup;
    int c;
    extern Abc_Ntk_t * Abc_NtkDarFold( Abc_Ntk_t * pNtk, int fCompl, int fVerbose, int fSeqCleanup );
    pNtk = Abc_FrameReadNtk(pAbc);
    // set defaults
    fCompl    =   0;
    fVerbose  =   0;
    fSeqCleanup = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "cvsh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fCompl ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 's':
            fSeqCleanup ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "Currently only works for structurally hashed circuits.\n" );
        return 0;
    }
    if ( Abc_NtkConstrNum(pNtk) == 0 )
    {
        Abc_Print( 0, "The network has no constraints.\n" );
        return 0;
    }
    if ( Abc_NtkConstrNum(pNtk) == Abc_NtkPoNum(pNtk) )
    {
        Abc_Print( 0, "The network has no primary outputs (only constraints).\n" );
        return 0;
    }
    if ( Abc_NtkIsComb(pNtk) )
        Abc_Print( 0, "The network is combinational.\n" );
    // modify the current network
    pNtkRes = Abc_NtkDarFold( pNtk, fCompl, fVerbose, fSeqCleanup );
    if ( pNtkRes == NULL )
    {
        Abc_Print( 1,"Transformation has failed.\n" );
        return 0;
    }
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkRes );
    return 0;
usage:
    Abc_Print( -2, "usage: fold [-cvh]\n" );
    Abc_Print( -2, "\t         folds constraints represented as separate outputs\n" );
    Abc_Print( -2, "\t         (constraints fail when any of them becomes 1 in any timeframe)\n" );
    Abc_Print( -2, "\t-c     : toggle complementing constraints while folding [default = %s]\n", fCompl? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle performing sequential cleanup [default = %s]\n", fSeqCleanup? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBm( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    FILE * pOut, * pErr;
    Abc_Ntk_t *pNtk, *pNtk1, *pNtk2;
    int fDelete1, fDelete2;
    char ** pArgvNew;
    int c, nArgcNew;
    int p_equivalence = FALSE;
    extern void bmGateWay( Abc_Ntk_t * pNtk1, Abc_Ntk_t * pNtk2, int p_equivalence );

    pNtk = Abc_FrameReadNtk(pAbc);
    pOut = Abc_FrameReadOut(pAbc);
    pErr = Abc_FrameReadErr(pAbc);

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ph" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        case 'P':
            p_equivalence = 1;
            break;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( !Abc_NtkPrepareTwoNtks( pErr, pNtk, pArgvNew, nArgcNew , &pNtk1, &pNtk2, &fDelete1, &fDelete2, 1 ) )
        return 1;

    if( (unsigned)Abc_NtkPiNum(pNtk1) != (unsigned)Abc_NtkPiNum(pNtk2) || (unsigned)Abc_NtkPoNum(pNtk1) != (unsigned)Abc_NtkPoNum(pNtk2) )
    {
        Abc_Print( -2, "Mismatch in the number of inputs or outputs\n");
        if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
        if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
        return 1;
    }

    bmGateWay( pNtk1, pNtk2, p_equivalence );

    if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
    if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
    return 0;

usage:
    Abc_Print( -2, "usage: bm [-P] <file1> <file2>\n" );
    Abc_Print( -2, "\t        performs Boolean matching (P-equivalence & PP-equivalence)\n" );
    Abc_Print( -2, "\t        for equivalent circuits, I/O matches are printed in IOmatch.txt\n" );
    Abc_Print( -2, "\t-P    : performs P-equivalnce checking\n");
    Abc_Print( -2, "\t        default is PP-equivalence checking (when -P is not provided)\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    Abc_Print( -2, "\tfile1 : the file with the first network\n");
    Abc_Print( -2, "\tfile2 : the file with the second network\n");

    Abc_Print( -2, "\t        \n" );
    Abc_Print( -2, "\t        This command was contributed by Hadi Katebi from U Michigan.\n" );
    Abc_Print( -2, "\t        The paper describing the method: H. Katebi and I. L. Markov.\n" );
    Abc_Print( -2, "\t        \"Large-scale Boolean matching\". Proc. DATE 2010. \n" );
    Abc_Print( -2, "\t        http://www.eecs.umich.edu/~imarkov/pubs/conf/date10-match.pdf\n" );
//    Abc_Print( -2, "\t        \n" );

    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBm2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    FILE * pOut, * pErr;
    Abc_Ntk_t *pNtk, *pNtk1, *pNtk2;
    int fDelete1, fDelete2;
    Abc_Obj_t * pObj;
    char ** pArgvNew;
    int c, nArgcNew, i;

    extern void saucyGateWay( Abc_Ntk_t * pNtk, Abc_Obj_t * pNodePo, FILE * gFile, int fBooleanMatching,
                              int fLookForSwaps, int fFixOutputs, int fFixInputs, int fQuiet, int fPrintTree);

    pNtk = Abc_FrameReadNtk(pAbc);
    pOut = Abc_FrameReadOut(pAbc);
    pErr = Abc_FrameReadErr(pAbc);

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( !Abc_NtkPrepareTwoNtks( pErr, pNtk, pArgvNew, nArgcNew , &pNtk1, &pNtk2, &fDelete1, &fDelete2, 1 ) )
        return 1;

    if( (unsigned)Abc_NtkPiNum(pNtk1) != (unsigned)Abc_NtkPiNum(pNtk2) ||
        (unsigned)Abc_NtkPoNum(pNtk1) != (unsigned)Abc_NtkPoNum(pNtk2) )
    {
        Abc_Print( -2, "Mismatch in the number of inputs or outputs\n");
        Abc_Print( -2, "*** Networks are NOT equivalent ***\n");
        if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
        if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
        return 1;
    }

    Abc_NtkPermute(pNtk2, 1, 1, 0, NULL, NULL, NULL );
    Abc_NtkShortNames(pNtk2);

    Abc_NtkForEachCi( pNtk1, pObj, i ) {
        char * newName = Abc_ObjNamePrefix( pObj, "N1:" );
        Nm_ManDeleteIdName( pNtk1->pManName, pObj->Id);
        Abc_ObjAssignName( pObj, newName, NULL );
    }
    Abc_NtkForEachCo( pNtk1, pObj, i ) {
        char * newName = Abc_ObjNamePrefix( pObj, "N1:" );
        Nm_ManDeleteIdName( pNtk1->pManName, pObj->Id);
        Abc_ObjAssignName( pObj, newName, NULL );
    }

    Abc_NtkForEachCi( pNtk2, pObj, i ) {
        char * newName = Abc_ObjNamePrefix( pObj, "N2:" );
        Nm_ManDeleteIdName( pNtk2->pManName, pObj->Id);
        Abc_ObjAssignName( pObj, newName, NULL );
    }
    Abc_NtkForEachCo( pNtk2, pObj, i ) {
        char * newName = Abc_ObjNamePrefix( pObj, "N2:" );
        Nm_ManDeleteIdName( pNtk2->pManName, pObj->Id);
        Abc_ObjAssignName( pObj, newName, NULL );
    }

    Abc_NtkAppend( pNtk1, pNtk2, 1 );
    saucyGateWay( pNtk1, NULL, NULL, 1, 0, 0, 0, 0, 0);

    if ( fDelete1 ) Abc_NtkDelete( pNtk1 );
    if ( fDelete2 ) Abc_NtkDelete( pNtk2 );
    return 0;

usage:
    Abc_Print( -2, "usage: bm2  <file1> <file2>\n" );
    Abc_Print( -2, "\t        performs Boolean matching (PP-equivalence)\n" );
    Abc_Print( -2, "\t        for equivalent circuits, permutation that maps one circuit\n" );
    Abc_Print( -2, "\t        to another is printed to standard output (PIs and POs of the\n" );
    Abc_Print( -2, "\t        first network have prefix \"N1:\", while PIs and POs of the\n" );
    Abc_Print( -2, "\t        second network have prefix \"N2:\")\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    Abc_Print( -2, "\tfile1 : the file with the first network\n");
    Abc_Print( -2, "\tfile2 : the file with the second network\n");

    Abc_Print( -2, "\t        \n" );
    Abc_Print( -2, "\t        This command was contributed by Hadi Katebi from U Michigan.\n" );
    Abc_Print( -2, "\t        The paper describing the method: H. Katebi, K. Sakallah and\n");
    Abc_Print( -2, "\t        I. L. Markov.\n" );
    Abc_Print( -2, "\t        \"Generalized Boolean Symmetries Through Nested Partition\n");
    Abc_Print( -2, "\t        Refinement\". Proc. ICCAD 2013. \n" );
    //Abc_Print( -2, "\t        http://www.eecs.umich.edu/~imarkov/pubs/conf/date10-match.pdf\n" );
//    Abc_Print( -2, "\t        \n" );

    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandSaucy( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t *pNtk;
    char * outputName = NULL;
    FILE * gFile = NULL;
    int fOutputsOneAtTime = 0;
    int fFixOutputs = 0;
    int fFixInputs = 0;
    int fLookForSwaps = 0;
    int fQuiet = 0;
    int fPrintTree = 0;
    int c;

    extern void saucyGateWay( Abc_Ntk_t * pNtk, Abc_Obj_t * pNodePo, FILE * gFile, int fBooleanMatching,
                              int fLookForSwaps, int fFixOutputs, int fFixInputs, int fQuiet, int fPrintTree);

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "OFiosqvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an output name or the keyword all.\n" );
                goto usage;
            }
            outputName = argv[globalUtilOptind];
            if ( !strcmp(argv[globalUtilOptind], "all") )
                fOutputsOneAtTime ^= 1;
            globalUtilOptind++;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a file name.\n" );
                goto usage;
            }
            if ( (gFile = fopen( argv[globalUtilOptind], "w" )) == NULL )
            {
                Abc_Print( -1, "Cannot create output file \"%s\". ", argv[globalUtilOptind] );
                return 1;
            }
            globalUtilOptind++;
            break;
        case 'i':
            fFixOutputs ^= 1;
            break;
        case 'o':
            fFixInputs ^= 1;
            break;
        case 's':
            fLookForSwaps ^= 1;
            break;
        case 'q':
            fQuiet ^= 1;
            break;
        case 'v':
            fPrintTree ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    pNtk = Abc_FrameReadNtk(pAbc);

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command works only for AIGs (run \"strash\").\n" );
        return 1;
    }

    pNtk = Abc_NtkDup( pNtk );
    Abc_NtkOrderObjsByName( pNtk, 1 );

    if (fOutputsOneAtTime) {
        int i;
        Abc_Obj_t * pNodePo;
        FILE * hadi = fopen("hadi.txt", "w");
        Abc_NtkForEachPo( pNtk, pNodePo, i ) {
            printf("Output %s\n\n", Abc_ObjName(pNodePo));
            saucyGateWay( pNtk, pNodePo, gFile, 0, fLookForSwaps, fFixOutputs, fFixInputs, fQuiet, fPrintTree );
            printf("----------------------------------------\n");
        }
        fclose(hadi);
    } else if (outputName != NULL) {
        int i;
        Abc_Obj_t * pNodePo;
        Abc_NtkForEachPo( pNtk, pNodePo, i ) {
            if (!strcmp(Abc_ObjName(pNodePo), outputName)) {
                saucyGateWay( pNtk, pNodePo, gFile, 0, fLookForSwaps, fFixOutputs, fFixInputs, fQuiet, fPrintTree );
                Abc_NtkDelete( pNtk );
                return 0;
            }
        }
        Abc_Print( -1, "Output not found\n" );
        return 1;
    } else
        saucyGateWay( pNtk, NULL, gFile, 0, fLookForSwaps, fFixOutputs, fFixInputs, fQuiet, fPrintTree );

    if (gFile != NULL) fclose(gFile);
    Abc_NtkDelete( pNtk );
    return 0;

usage:
    Abc_Print( -2, "usage: saucy3 [-O <name>] [-F <file>] [-iosqvh]\n\n" );
    Abc_Print( -2, "\t            computes functional symmetries of the network\n" );
    Abc_Print( -2, "\t            prints symmetry generators to the standard output\n" );
    Abc_Print( -2, "\t-O <name> : (optional) compute symmetries only for output given by name\n");
    Abc_Print( -2, "\t            only inputs in the output cone are permuted\n");
    Abc_Print( -2, "\t            (special case) name=all, compute symmetries for each\n" );
    Abc_Print( -2, "\t            output, but only one output at a time\n" );
    Abc_Print( -2, "\t            [default = compute symmetries by permuting all I/Os]\n" );
    Abc_Print( -2, "\t-F <file> : print symmetry generators to file [default = stdout]\n");
    Abc_Print( -2, "\t-i        : permute just the inputs (fix the outputs) [default = no]\n");
    Abc_Print( -2, "\t-o        : permute just the outputs (fix the inputs) [default = no]\n");
    Abc_Print( -2, "\t-s        : only look for swaps of inputs [default = no]\n");
    Abc_Print( -2, "\t-q        : quiet (do not print symmetry generators) [default = no]\n");
    Abc_Print( -2, "\t-v        : verbose (print the search tree) [default = no]\n");
    Abc_Print( -2, "\t-h        : print the command usage\n");

    Abc_Print( -2, "\t            \n" );
    Abc_Print( -2, "\t            This command was contributed by Hadi Katebi from U Michigan.\n" );
    Abc_Print( -2, "\t            The paper describing the method: H. Katebi, K. Sakallah and\n");
    Abc_Print( -2, "\t            I. L. Markov.\n" );
    Abc_Print( -2, "\t            \"Generalized Boolean Symmetries Through Nested Partition\n");
    Abc_Print( -2, "\t            Refinement\". Proc. ICCAD 2013. \n" );
    //Abc_Print( -2, "\t          http://www.eecs.umich.edu/~imarkov/pubs/conf/date10-match.pdf\n" );
    Abc_Print( -2, "\t            Saucy webpage: http://vlsicad.eecs.umich.edu/BK/SAUCY/\n" );

    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTestCex( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk;
    int c;
    int nOutputs = 0;
    int fCheckAnd = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Oah" ) ) != EOF )
    {
        switch ( c )
        {
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            nOutputs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nOutputs < 0 )
                goto usage;
            break;
        case 'a':
            fCheckAnd ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    if ( pAbc->pCex == NULL )
    {
        Abc_Print( 1, "There is no current cex.\n");
        return 0;
    }

    if ( !fCheckAnd )
    {
        // check the main AIG
        pNtk = Abc_FrameReadNtk(pAbc);
        if ( pNtk == NULL )
            Abc_Print( 1, "Main AIG: There is no current network.\n");
        else if ( !Abc_NtkIsStrash(pNtk) )
            Abc_Print( 1, "Main AIG: The current network is not an AIG.\n");
        else if ( Abc_NtkPiNum(pNtk) != pAbc->pCex->nPis )
            Abc_Print( 1, "Main AIG: The number of PIs (%d) is different from cex (%d).\n", Abc_NtkPiNum(pNtk), pAbc->pCex->nPis );
        else
        {
            extern int Abc_NtkVerifyCex( Abc_Ntk_t * pNtk, Abc_Cex_t * p );
            int iPoOld = pAbc->pCex->iPo;
            pAbc->pCex->iPo = Abc_NtkVerifyCex( pNtk, pAbc->pCex );
            if ( pAbc->pCex->iPo == -1 )
                Abc_Print( 1, "Main AIG: The cex does not fail any outputs.\n" );
            else if ( iPoOld != pAbc->pCex->iPo )
                Abc_Print( 1, "Main AIG: The cex refined PO %d instead of PO %d.\n", pAbc->pCex->iPo, iPoOld );
            else
                Abc_Print( 1, "Main AIG: The cex is correct.\n" );
        }
    }
    else
    {
        // check the AND AIG
        if ( pAbc->pGia == NULL )
            Abc_Print( 1, "And  AIG: There is no current network.\n");
        else if ( Gia_ManPiNum(pAbc->pGia) != pAbc->pCex->nPis )
            Abc_Print( 1, "And  AIG: The number of PIs (%d) is different from cex (%d).\n", Gia_ManPiNum(pAbc->pGia), pAbc->pCex->nPis );
        else
        {
            int iPoOld = pAbc->pCex->iPo;
            pAbc->pCex->iPo = Gia_ManFindFailedPoCex( pAbc->pGia, pAbc->pCex, nOutputs );
            if ( pAbc->pCex->iPo == -1 )
                Abc_Print( 1, "And  AIG: The cex does not fail any outputs.\n" );
            else if ( iPoOld != pAbc->pCex->iPo )
                Abc_Print( 1, "And  AIG: The cex refined PO %d instead of PO %d.\n", pAbc->pCex->iPo, iPoOld );
            else
                Abc_Print( 1, "And  AIG: The cex is correct.\n" );
        }
    }
    return 0;

usage:
    Abc_Print( -2, "usage: testcex [-O num] [-ah]\n" );
    Abc_Print( -2, "\t         tests the current cex against the current AIG or the &-AIG\n" );
    Abc_Print( -2, "\t-O num : the number of real POs in the PO list [default = %d]\n", nOutputs );
    Abc_Print( -2, "\t-a     : toggle checking the current AIG or the &-AIG [default = %s]\n", fCheckAnd ? "&-AIG": "current AIG" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandPdr( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_NtkDarPdr( Abc_Ntk_t * pNtk, Pdr_Par_t * pPars );
    Pdr_Par_t Pars, * pPars = &Pars;
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc), * pNtkUsed, * pNtkFlop = NULL;
    char * pLogFileName = NULL;
    int c;
    Pdr_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "MFCDQTHGSLIaxrmuyfqipdegjonctkvwzhb" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRecycle = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRecycle < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFrameMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFrameMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nConfLimit < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nConfGenLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nConfGenLimit < 0 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRestLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRestLimit < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOut < 0 )
                goto usage;
            break;
        case 'H':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-H\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOutOne = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOutOne < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOutGap = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOutGap < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRandomSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRandomSeed < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a file name.\n" );
                goto usage;
            }
            pPars->pInvFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'a':
            pPars->fSolveAll ^= 1;
            break;
        case 'x':
            pPars->fStoreCex ^= 1;
            break;
        case 'r':
            pPars->fTwoRounds ^= 1;
            break;
        case 'm':
            pPars->fMonoCnf ^= 1;
            break;
        case 'u':
            pPars->fNewXSim ^= 1;
            break;
        case 'y':
            pPars->fFlopPrio ^= 1;
            break;
        case 'f':
            pPars->fFlopOrder ^= 1;
            break;
        case 'q':
            pPars->fShortest ^= 1;
            break;
        case 'i':
            pPars->fShiftStart ^= 1;
            break;
        case 'p':
            pPars->fReuseProofOblig ^= 1;
            break;
        case 'd':
            pPars->fDumpInv ^= 1;
            break;
        case 'e':
            pPars->fUseSupp ^= 1;
            break;
        case 'g':
            pPars->fSkipGeneral ^= 1;
            break;
        case 'j':
            pPars->fSimpleGeneral ^= 1;
            break;
        case 'o':
            pPars->fUsePropOut ^= 1;
            break;
        case 'n':
            pPars->fSkipDown ^= 1;
            break;
        case 'c':
            pPars->fCtgs ^= 1;
            break;
        case 't':
            pPars->fUseAbs ^= 1;
            break;
        case 'k':
            pPars->fUseSimpleRef ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'z':
            pPars->fNotVerbose ^= 1;
            break;
        case 'b':
            pPars->fBlocking ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pNtk == NULL )
    {
        Abc_Print( -2, "There is no current network.\n");
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -2, "The current network is not an AIG (run \"strash\").\n");
        return 0;
    }
    if ( pAbc->fBatchMode && (pAbc->Status == 0 || pAbc->Status == 1) ) 
    { 
        Abc_Print( 1, "The miters is already solved; skipping the command.\n" ); 
        return 0;
    }
    if ( Abc_NtkLatchNum(pNtk) == 0 )
    {
        pNtkFlop = Abc_NtkDup( pNtk );
        Abc_NtkAddLatch( pNtkFlop, Abc_AigConst1(pNtkFlop), ABC_INIT_ONE );
    }
    // run the procedure
    pPars->fUseBridge = pAbc->fBridgeMode;
    pNtkUsed = pNtkFlop ? pNtkFlop : pNtk;
    pAbc->Status  = Abc_NtkDarPdr( pNtkUsed, pPars );
    pAbc->nFrames = pNtkUsed->vSeqModelVec ? -1 : pPars->iFrame;
    Abc_FrameReplacePoStatuses( pAbc, &pPars->vOutMap );
    if ( pNtkUsed->vSeqModelVec )
        Abc_FrameReplaceCexVec( pAbc, &pNtkUsed->vSeqModelVec );
    else
        Abc_FrameReplaceCex( pAbc, &pNtkUsed->pSeqModel );
    if ( pNtkFlop ) Abc_NtkDelete( pNtkFlop );
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "pdr" );
    return 0;

usage:
    Abc_Print( -2, "usage: pdr [-MFCDQTHGS <num>] [-LI <file>] [-axrmuyfqipdegjonctkvwzh]\n" );
    Abc_Print( -2, "\t         model checking using property directed reachability (aka IC3)\n" );
    Abc_Print( -2, "\t         pioneered by Aaron R. Bradley (http://theory.stanford.edu/~arbrad/)\n" );
    Abc_Print( -2, "\t         with improvements by Niklas Een (http://een.se/niklas/)\n" );
    Abc_Print( -2, "\t-M num : limit on unused vars to trigger SAT solver recycling [default = %d]\n",       pPars->nRecycle );
    Abc_Print( -2, "\t-F num : limit on timeframes explored to stop computation [default = %d]\n",           pPars->nFrameMax );
    Abc_Print( -2, "\t-C num : limit on conflicts in one SAT call (0 = no limit) [default = %d]\n",          pPars->nConfLimit );
    Abc_Print( -2, "\t-D num : limit on conflicts during ind-generalization (0 = no limit) [default = %d]\n",pPars->nConfGenLimit );
    Abc_Print( -2, "\t-Q num : limit on proof obligations before a restart (0 = no limit) [default = %d]\n", pPars->nRestLimit );
    Abc_Print( -2, "\t-T num : runtime limit, in seconds (0 = no limit) [default = %d]\n",                   pPars->nTimeOut );
    Abc_Print( -2, "\t-H num : runtime limit per output, in milliseconds (with \"-a\") [default = %d]\n",    pPars->nTimeOutOne );
    Abc_Print( -2, "\t-G num : runtime gap since the last CEX (0 = no limit) [default = %d]\n",              pPars->nTimeOutGap );
    Abc_Print( -2, "\t-S num : * value to seed the SAT solver with [default = %d]\n",                          pPars->nRandomSeed );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n",                                          pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-I file: the invariant file name [default = %s]\n",                                    pPars->pInvFileName ? pPars->pInvFileName : "default name" );
    Abc_Print( -2, "\t-a     : toggle solving all outputs even if one of them is SAT [default = %s]\n",      pPars->fSolveAll? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggle storing CEXes when solving all outputs [default = %s]\n",              pPars->fStoreCex? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle using more effort in generalization [default = %s]\n",                 pPars->fTwoRounds? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle using monolythic CNF computation [default = %s]\n",                    pPars->fMonoCnf? "yes": "no" );
    Abc_Print( -2, "\t-u     : toggle updated X-valued simulation [default = %s]\n",                         pPars->fNewXSim? "yes": "no" );
    Abc_Print( -2, "\t-y     : toggle using structural flop priorities [default = %s]\n",                    pPars->fFlopPrio? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle ordering flops by cost before generalization [default = %s]\n",        pPars->fFlopOrder? "yes": "no" );
    Abc_Print( -2, "\t-q     : toggle creating only shortest counter-examples [default = %s]\n",             pPars->fShortest? "yes": "no" );
    Abc_Print( -2, "\t-i     : toggle clause pushing from an intermediate timeframe [default = %s]\n",       pPars->fShiftStart? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle reusing proof-obligations in the last timeframe [default = %s]\n",     pPars->fReuseProofOblig? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle dumping invariant (valid if init state is all-0) [default = %s]\n",    pPars->fDumpInv? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle using only support variables in the invariant [default = %s]\n",       pPars->fUseSupp? "yes": "no" );
    Abc_Print( -2, "\t-g     : toggle skipping expensive generalization step [default = %s]\n",              pPars->fSkipGeneral? "yes": "no" );
    Abc_Print( -2, "\t-j     : toggle using simplified generalization step [default = %s]\n",                pPars->fSimpleGeneral? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle using property output as inductive hypothesis [default = %s]\n",       pPars->fUsePropOut? "yes": "no" );
    Abc_Print( -2, "\t-n     : * toggle skipping \'down\' in generalization [default = %s]\n",                 pPars->fSkipDown? "yes": "no" );
    Abc_Print( -2, "\t-c     : * toggle handling CTGs in \'down\' [default = %s]\n",                           pPars->fCtgs? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle using abstraction [default = %s]\n",                                   pPars->fUseAbs? "yes": "no" );
    Abc_Print( -2, "\t-k     : toggle using simplified refinement [default = %s]\n",                         pPars->fUseSimpleRef? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing optimization summary [default = %s]\n",                       pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing detailed stats default = %s]\n",                              pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle suppressing report about solved outputs [default = %s]\n",             pPars->fNotVerbose? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle clause pushing with blocking [default = %s]\n",                        pPars->fBlocking? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n\n");
    Abc_Print( -2, "\t* Implementation of switches -S, -n, and -c is contributed by Zyad Hassan.\n");
    Abc_Print( -2, "\t  The theory and experiments supporting this work can be found in the following paper:\n");
    Abc_Print( -2, "\t  Zyad Hassan, Aaron R. Bradley, Fabio Somenzi, \"Better Generalization in IC3\", FMCAD 2013.\n");
    Abc_Print( -2, "\t  (http://www.cs.utexas.edu/users/hunt/FMCAD/FMCAD13/papers/85-Better-Generalization-IC3.pdf)\n");



    return 1;
}

#ifdef ABC_USE_CUDD

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandReconcile( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Cex_t * Llb4_Nonlin4NormalizeCex( Aig_Man_t * pAigOrg, Aig_Man_t * pAigRpm, Abc_Cex_t * pCexRpm );
    Abc_Cex_t * pCex;
    Abc_Ntk_t * pNtk1 = NULL, * pNtk2 = NULL;
    Aig_Man_t * pAig1 = NULL, * pAig2 = NULL;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    if ( argc != globalUtilOptind + 2 && argc != globalUtilOptind )
    {
        Abc_Print( 1,"Does not seen to have two files names as arguments.\n" );
        return 1;
    }
    if ( pAbc->pCex == NULL )
    {
        Abc_Print( 1,"There is no current counter-example.\n" );
        return 1;
    }

    if ( argc == globalUtilOptind + 2 )
    {
        // derive networks
        pNtk1 = Io_Read( argv[globalUtilOptind], Io_ReadFileType(argv[globalUtilOptind]), 1, 0 );
        if ( pNtk1 == NULL )
            return 1;
        pNtk2 = Io_Read( argv[globalUtilOptind+1], Io_ReadFileType(argv[globalUtilOptind+1]), 1, 0 );
        if ( pNtk2 == NULL )
        {
            Abc_NtkDelete( pNtk1 );
            return 1;
        }
        // create counter-examples
        pAig1 = Abc_NtkToDar( pNtk1, 0, 0 );
        pAig2 = Abc_NtkToDar( pNtk2, 0, 0 );
    }
    else if ( argc == globalUtilOptind )
    {
        if ( pAbc->pNtkCur == NULL )
        {
            Abc_Print( 1, "There is no AIG in the main-space.\n");
            return 0;
        }
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( 1, "There is no AIG in the &-space.\n");
            return 0;
        }
        // create counter-examples
        pAig1 = Abc_NtkToDar( pAbc->pNtkCur, 0, 0 );
        pAig2 = Gia_ManToAigSimple( pAbc->pGia );
    }
    else assert( 0 );
    pCex = Llb4_Nonlin4NormalizeCex( pAig1, pAig2, pAbc->pCex );
    Aig_ManStop( pAig1 );
    Aig_ManStop( pAig2 );
    if ( pNtk2 )  Abc_NtkDelete( pNtk2 );
    if ( pCex == NULL )
    {
        Abc_Print( 1,"Counter-example computation has failed.\n" );
        if ( pNtk1 )  Abc_NtkDelete( pNtk1 );
        return 1;
    }

    // replace the current network
    if ( pNtk1 )
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtk1 );
    // update the counter-example
    pAbc->nFrames = pCex->iFrame;
    Abc_FrameReplaceCex( pAbc, &pCex );
    return 0;

usage:
    Abc_Print( -2, "usage: reconcile [-h] <fileOrigin> <fileReparam>\n" );
    Abc_Print( -2, "\t        reconciles current CEX with <fileOrigin>\n" );
    Abc_Print( -2, "\t        More specifically:\n" );
    Abc_Print( -2, "\t        (i) assumes that <fileReparam> is an AIG derived by input\n" );
    Abc_Print( -2, "\t        reparametrization of <fileOrigin> without seq synthesis;\n" );
    Abc_Print( -2, "\t        (ii) assumes that current CEX is valid for <fileReparam>;\n" );
    Abc_Print( -2, "\t        (iii) derives new CEX for <fileOrigin> and sets this CEX\n" );
    Abc_Print( -2, "\t        and <fileOrigin> to be current CEX and current network\n" );
    Abc_Print( -2, "\t<fileOrigin>   : file name with the original AIG\n");
    Abc_Print( -2, "\t<fileReparam>  : file name with the reparametrized AIG\n");
    Abc_Print( -2, "\t        (if both file names are not given on the command line,\n");
    Abc_Print( -2, "\t        original/reparam AIG has to be in the main-space/&-space)\n");
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

#endif

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCexSave( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pCex == NULL )
    {
        Abc_Print( -1, "Current CEX is not available..\n" );
        return 1;
    }
    ABC_FREE( pAbc->pCex2 );
    pAbc->pCex2 = Abc_CexDup( pAbc->pCex, -1 );
    return 0;

usage:
    Abc_Print( -2, "usage: cexsave [-h]\n" );
    Abc_Print( -2, "\t        saves the current CEX into the internal storage\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCexLoad( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pCex2 == NULL )
    {
        Abc_Print( -1, "Saved CEX is not available.\n" );
        return 1;
    }
    ABC_FREE( pAbc->pCex );
    pAbc->pCex = Abc_CexDup( pAbc->pCex2, -1 );
    // update status
    pAbc->nFrames = pAbc->pCex2->iFrame;
    pAbc->Status = 0;
    return 0;

usage:
    Abc_Print( -2, "usage: cexload [-h]\n" );
    Abc_Print( -2, "\t        loads the current CEX from the internal storage\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCexCut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtkNew;
    int c, iFrStart = 0;
    int iFrStop     = ABC_INFINITY;
    int fCombOnly   = 0;
    int fUseOne     = 0;
    int fAllFrames  = 0;
    int fVerbose    = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FGcnmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            iFrStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iFrStart < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            iFrStop = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iFrStop < 0 )
                goto usage;
            break;
        case 'c':
            fCombOnly ^= 1;
            break;
        case 'n':
            fUseOne ^= 1;
            break;
        case 'm':
            fAllFrames ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    if ( pAbc->pCex == NULL )
    {
        Abc_Print( 1, "There is no current cex.\n");
        return 0;
    }
    if ( pAbc->pNtkCur == NULL )
    {
        Abc_Print( 1, "There is no AIG in the &-space.\n");
        return 0;
    }
    if ( !Abc_NtkIsStrash(pAbc->pNtkCur) )
    {
        Abc_Print( 1, "Current network is not an AIG.\n");
        return 0;
    }
    if ( iFrStop == ABC_INFINITY )
        iFrStop = pAbc->pCex->iFrame;

    {
        Aig_Man_t * pAig = Abc_NtkToDar( pAbc->pNtkCur, 0, 1 );
        Aig_Man_t * pAigNew = Bmc_AigTargetStates( pAig, pAbc->pCex, iFrStart, iFrStop, fCombOnly, fUseOne, fAllFrames, fVerbose );
        Aig_ManStop( pAig );
        if ( pAigNew == NULL )
        {
            Abc_Print( 1, "Command has failed.\n");
            return 0;
        }
        pNtkNew = Abc_NtkFromAigPhase( pAigNew );
        pNtkNew->pName = Extra_UtilStrsav( pAbc->pNtkCur->pName );
        Aig_ManStop( pAigNew );
        // update the network
        Abc_FrameReplaceCurrentNetwork( pAbc, pNtkNew );
    }
/*
    pGiaNew = Bmc_GiaTargetStates( pAbc->pGia, pAbc->pCex, iFrStart, iFrStop, fCombOnly, fUseOne, fVerbose );
    if ( pGiaNew == NULL )
    {
        Abc_Print( 1, "Command has failed.\n");
        return 0;
    }
    Abc_FrameUpdateGia( pAbc, pGiaNew );
*/
    return 0;

usage:
    Abc_Print( -2, "usage: cexcut [-FG num] [-cnmvh]\n" );
    Abc_Print( -2, "\t         creates logic for bad states using the current CEX\n" );
    Abc_Print( -2, "\t-F num : 0-based number of the starting frame [default = %d]\n", iFrStart );
    Abc_Print( -2, "\t-G num : 0-based number of the ending frame [default = %d]\n",   iFrStop );
    Abc_Print( -2, "\t-c     : toggle outputting unate combinational circuit [default = %s]\n",  fCombOnly? "yes": "no" );
    Abc_Print( -2, "\t-n     : toggle generating only one bad state [default = %s]\n", fUseOne? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle generating bad states for all frames after G [default = %s]\n", fAllFrames? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCexMerge( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Cex_t * pCexNew;
    int c;
    int iFrStart = 0;
    int iFrStop  = ABC_INFINITY;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FGvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            iFrStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iFrStart < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            iFrStop = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iFrStop < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    if ( pAbc->pCex == NULL )
    {
        Abc_Print( 1, "There is no current cex.\n");
        return 0;
    }
    if ( pAbc->pCex2 == NULL )
    {
        Abc_Print( 1, "There is no saved cex.\n");
        return 0;
    }
    if ( iFrStop - iFrStart + pAbc->pCex->iPo < pAbc->pCex->iFrame )
    {
        Abc_Print( 1, "Current CEX does not allow to shorten the saved CEX.\n");
        return 0;
    }
    pCexNew = Abc_CexMerge( pAbc->pCex2, pAbc->pCex, iFrStart, iFrStop );
    if ( pCexNew == NULL )
    {
        Abc_Print( 1, "Merging CEXes has failed.\n");
        return 0;
    }
    // replace the saved CEX
    ABC_FREE( pAbc->pCex2 );
    pAbc->pCex2 = pCexNew;
    return 0;

usage:
    Abc_Print( -2, "usage: cexmerge [-FG num] [-vh]\n" );
    Abc_Print( -2, "\t         merges the current CEX into the saved one\n" );
    Abc_Print( -2, "\t         and sets the resulting CEX as the saved one\n" );
    Abc_Print( -2, "\t-F num : 0-based number of the starting frame [default = %d]\n", iFrStart );
    Abc_Print( -2, "\t-G num : 0-based number of the ending frame [default = %d]\n",   iFrStop );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandCexMin( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk;
    Abc_Cex_t * vCexNew = NULL;
    int c;
    int nConfLimit = 1000;
    int nRounds    =    1;
    int fVerbose   =    0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CRvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRounds < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    if ( pAbc->pCex == NULL )
    {
        Abc_Print( 1, "There is no current cex.\n");
        return 0;
    }

    // check the main AIG
    pNtk = Abc_FrameReadNtk(pAbc);
    if ( pNtk == NULL )
        Abc_Print( 1, "Main AIG: There is no current network.\n");
    else if ( !Abc_NtkIsStrash(pNtk) )
        Abc_Print( 1, "Main AIG: The current network is not an AIG.\n");
    else if ( Abc_NtkPiNum(pNtk) != pAbc->pCex->nPis )
        Abc_Print( 1, "Main AIG: The number of PIs (%d) is different from cex (%d).\n", Abc_NtkPiNum(pNtk), pAbc->pCex->nPis );
//      else if ( Abc_NtkLatchNum(pNtk) != pAbc->pCex->nRegs )
//          Abc_Print( 1, "Main AIG: The number of registers (%d) is different from cex (%d).\n", Abc_NtkLatchNum(pNtk), pAbc->pCex->nRegs );
//      else if ( Abc_NtkPoNum(pNtk) <= pAbc->pCex->iPo )
//          Abc_Print( 1, "Main AIG: The number of POs (%d) is less than the PO index in cex (%d).\n", Abc_NtkPoNum(pNtk), pAbc->pCex->iPo );
    else
    {
        Aig_Man_t * pAig = Abc_NtkToDar( pNtk, 0, 1 );
        Gia_Man_t * pGia = Gia_ManFromAigSimple( pAig );
//        if ( !Gia_ManVerifyCex( pGia, pAbc->pCex, 0 ) )
        int iPoOld = pAbc->pCex->iPo;
        pAbc->pCex->iPo = Gia_ManFindFailedPoCex( pGia, pAbc->pCex, 0 );
        Gia_ManStop( pGia );
        if ( pAbc->pCex->iPo == -1 )
        {
            pAbc->pCex->iPo = iPoOld;
            Abc_Print( -1, "Main AIG: The cex does not fail any outputs.\n" );
            return 0;
        }
        else if ( iPoOld != pAbc->pCex->iPo )
            Abc_Print( 0, "Main AIG: The cex refined PO %d instead of PO %d.\n", pAbc->pCex->iPo, iPoOld );
        // perform minimization
        vCexNew = Saig_ManCexMinPerform( pAig, pAbc->pCex );
        Aig_ManStop( pAig );
        Abc_CexFree( vCexNew );
//        Abc_FrameReplaceCex( pAbc, &vCexNew );

//        Abc_Print( 1,"Implementation of this command is not finished.\n" );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: cexmin [-CR num] [-vh]\n" );
    Abc_Print( -2, "\t         reduces the length of the counter-example\n" );
    Abc_Print( -2, "\t-C num : the maximum number of conflicts [default = %d]\n", nConfLimit );
    Abc_Print( -2, "\t-R num : the number of minimization rounds [default = %d]\n", nRounds );
    Abc_Print( -2, "\t-v     : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandDualRail( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Vec_Int_t * Abc_NtkFindDcLatches( Abc_Ntk_t * pNtk );
    Abc_Ntk_t * pNtk, * pNtkNew = NULL;
    Aig_Man_t * pAig, * pAigNew;
    Vec_Int_t * vDcFlops = NULL;
    int c;
    int nDualPis   = 0;
    int fDualFfs   = 0;
    int fDualDcFfs = 0;
    int fMiterFfs  = 0;
    int fComplPo   = 0;
    int fCheckZero = 0;
    int fCheckOne  = 0;
    int fVerbose   = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Itxfczovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nDualPis = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDualPis < 0 )
                goto usage;
            break;
        case 't':
            fDualFfs ^= 1;
            break;
        case 'x':
            fDualDcFfs ^= 1;
            break;
        case 'f':
            fMiterFfs ^= 1;
            break;
        case 'c':
            fComplPo ^= 1;
            break;
        case 'z':
            fCheckZero ^= 1;
            break;
        case 'o':
            fCheckOne ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    // check the main AIG
    pNtk = Abc_FrameReadNtk(pAbc);
    if ( pNtk == NULL )
    {
        Abc_Print( 1, "Main AIG: There is no current network.\n");
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( 1, "Main AIG: The current network is not an AIG.\n");
        return 0;
    }

    if ( fDualDcFfs )
        vDcFlops = Abc_NtkFindDcLatches( pNtk );

    // transform
    pAig = Abc_NtkToDar( pNtk, 0, 1 );
    pAigNew = Saig_ManDupDual( pAig, vDcFlops, nDualPis, fDualFfs, fMiterFfs, fComplPo, fCheckZero, fCheckOne );
    Aig_ManStop( pAig );
    pNtkNew = Abc_NtkFromAigPhase( pAigNew );
    pNtkNew->pName = Extra_UtilStrsav(pNtk->pName);
    Aig_ManStop( pAigNew );
    Vec_IntFreeP( &vDcFlops );

    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkNew );
    return 0;

usage:
    Abc_Print( -2, "usage: dualrail [-I num] [-txfczovh]\n" );
    Abc_Print( -2, "\t         transforms the current AIG into a dual-rail miter\n" );
    Abc_Print( -2, "\t         expressing the property \"at least one PO has ternary value\"\n" );
    Abc_Print( -2, "\t         (to compute an initialization sequence, use switches \"-tfc\")\n" );
    Abc_Print( -2, "\t-I num : the number of first PIs interpreted as ternary [default = %d]\n", nDualPis );
    Abc_Print( -2, "\t-t     : toggle ternary flop init values for all flops [default = %s]\n", fDualFfs? "yes": "const0 init values" );
    Abc_Print( -2, "\t-x     : toggle ternary flop init values for DC-valued flops [default = %s]\n", fDualDcFfs? "yes": "const0 init values" );
    Abc_Print( -2, "\t-f     : toggle mitering flops instead of POs [default = %s]\n", fMiterFfs? "flops": "POs" );
    Abc_Print( -2, "\t-c     : toggle complementing the miter output [default = %s]\n", fComplPo? "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle checking PO==0 instead of PO==X [default = %s]\n", fCheckZero? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle checking PO==1 instead of PO==X [default = %s]\n", fCheckOne? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandBlockPo( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkNew = NULL;
    Aig_Man_t * pAig;
    int c;
    int nCycles = 0;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nCycles = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCycles < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    // check the main AIG
    pNtk = Abc_FrameReadNtk(pAbc);
    if ( pNtk == NULL )
    {
        Abc_Print( 1, "Main AIG: There is no current network.\n");
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( 1, "Main AIG: The current network is not an AIG.\n");
        return 0;
    }
    if ( nCycles == 0 )
    {
        Abc_Print( 1, "The number of time frame is 0. The circuit is left unchanged.\n" );
        return 0;
    }

    // transform
    pAig = Abc_NtkToDar( pNtk, 0, 1 );
    Saig_ManBlockPo( pAig, nCycles );
    pNtkNew = Abc_NtkFromAigPhase( pAig );
    Aig_ManStop( pAig );
    // transfer the name
    pNtkNew->pName = Extra_UtilStrsav(pNtk->pName);
    pNtkNew->pSpec = Extra_UtilStrsav(pNtk->pSpec);
    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkNew );
    return 0;

usage:
    Abc_Print( -2, "usage: blockpo [-F num] [-fvh]\n" );
    Abc_Print( -2, "\t         forces the miter outputs to be \"true\" in the first F frames\n" );
    Abc_Print( -2, "\t-F num : the number of time frames [default = %d]\n", nCycles );
    Abc_Print( -2, "\t-v     : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandIso( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk, * pNtkNew = NULL;
    Aig_Man_t * pAig, * pTemp;
    Vec_Ptr_t * vPosEquivs = NULL;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    // check the main AIG
    pNtk = Abc_FrameReadNtk(pAbc);
    if ( pNtk == NULL )
    {
        Abc_Print( 1, "Main AIG: There is no current network.\n");
        return 0;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( 1, "Main AIG: The current network is not an AIG.\n");
        return 0;
    }
    if ( Abc_NtkPoNum(pNtk) == 1 )
    {
        Abc_Print( 1, "Current AIG has only one PO. Transformation is not performed.\n");
        return 0;
    }

    // transform
    pAig = Abc_NtkToDar( pNtk, 0, 1 );
    pTemp = Saig_ManIsoReduce( pAig, &vPosEquivs, fVerbose );
    pNtkNew = Abc_NtkFromAigPhase( pTemp );
    pNtkNew->pName = Extra_UtilStrsav(pNtk->pName);
    Aig_ManStop( pTemp );
    Aig_ManStop( pAig );

    // update the internal storage of PO equivalences
    Abc_FrameReplacePoEquivs( pAbc, &vPosEquivs );

    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtkNew );
    return 0;

usage:
    Abc_Print( -2, "usage: iso [-vh]\n" );
    Abc_Print( -2, "\t         removes POs with isomorphic sequential COI\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTraceStart( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command is applicable to AIGs.\n" );
        return 1;
    }
/*
    Abc_HManStart();
    if ( !Abc_HManPopulate( pNtk ) )
    {
        Abc_Print( -1, "Failed to start the tracing database.\n" );
        return 1;
    }
*/
    return 0;

usage:
    Abc_Print( -2, "usage: trace_start [-h]\n" );
    Abc_Print( -2, "\t        starts verification tracing\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandTraceCheck( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash(pNtk) )
    {
        Abc_Print( -1, "This command is applicable to AIGs.\n" );
        return 1;
    }
/*
    if ( !Abc_HManIsRunning(pNtk) )
    {
        Abc_Print( -1, "The tracing database is not available.\n" );
        return 1;
    }

    if ( !Abc_HManVerify( 1, pNtk->Id ) )
        Abc_Print( -1, "Verification failed.\n" );
    Abc_HManStop();
*/
    return 0;

usage:
    Abc_Print( -2, "usage: trace_check [-h]\n" );
    Abc_Print( -2, "\t        checks the current network using verification trace\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}




/**Function*************************************************************

  Synopsis    [Compares to versions of the design and finds the best.]

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
static inline int Abc_NtkCompareWithBest( Abc_Ntk_t * pBest, Abc_Ntk_t * p, 
    float * pnBestNtkArea,  float * pnBestNtkDelay, 
    int *   pnBestNtkNodes, int *   pnBestNtkLevels, int fArea )
{ 
    float nNtkArea   = (float)Abc_NtkGetMappedArea(p);
    float nNtkDelay  = (float)Abc_NtkDelayTrace(p, NULL, NULL, 0);
    int   nNtkNodes  = Abc_NtkNodeNum(p);
    int   nNtkLevels = Abc_NtkLevel(p);

    if ( pBest == NULL ||
         Abc_NtkPiNum(pBest)    != Abc_NtkPiNum(p)    ||
         Abc_NtkPoNum(pBest)    != Abc_NtkPoNum(p)    ||
         Abc_NtkLatchNum(pBest) != Abc_NtkLatchNum(p) ||
         strcmp(Abc_NtkName(pBest), Abc_NtkName(p))   ||
//         (!fArea && (*pnBestNtkLevels > nNtkLevels || (*pnBestNtkLevels == nNtkLevels && *pnBestNtkDelay > nNtkDelay ))) ||
//         ( fArea && (*pnBestNtkNodes  > nNtkNodes  || (*pnBestNtkNodes  == nNtkNodes  && *pnBestNtkArea  > nNtkArea  )))
         (!fArea && (*pnBestNtkDelay > nNtkDelay || (*pnBestNtkDelay == nNtkDelay && *pnBestNtkArea  > nNtkArea  ))) ||
         ( fArea && (*pnBestNtkArea  > nNtkArea  || (*pnBestNtkArea  == nNtkArea  && *pnBestNtkDelay > nNtkDelay )))
       )
    {
        *pnBestNtkArea   = nNtkArea;
        *pnBestNtkDelay  = nNtkDelay; 
        *pnBestNtkNodes  = nNtkNodes;
        *pnBestNtkLevels = nNtkLevels;
        printf( "\nUpdating the best network (Area = %10.2f  Delay = %10.2f  Nodes = %6d  Level = %6d).\n\n", 
            nNtkArea, nNtkDelay, nNtkNodes, nNtkLevels );
        return 1;
    }
    return 0;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbcSave( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fArea = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ah" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fArea ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pNtkCur == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Abc_NtkHasMapping(pAbc->pNtkCur) )
    {
        Abc_Print( -1, "Network has no mapping.\n" );
        return 1;
    }
    if ( !Abc_NtkCompareWithBest( pAbc->pNtkBest, pAbc->pNtkCur, 
             &pAbc->nBestNtkArea,  &pAbc->nBestNtkDelay, 
             &pAbc->nBestNtkNodes, &pAbc->nBestNtkLevels, fArea ) )
        return 0;
    // save the design as best
    if ( pAbc->pNtkBest ) Abc_NtkDelete( pAbc->pNtkBest );
    pAbc->pNtkBest = Abc_NtkDup(pAbc->pNtkCur);
    return 0;

usage:
    Abc_Print( -2, "usage: save [-ah]\n" );
    Abc_Print( -2, "\t        compares and possibly saves network with mapping\n" );
    Abc_Print( -2, "\t-a    : toggle using area as the primary metric [default = %s]\n", fArea? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbcLoad( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    // restore from best
    if ( pAbc->pNtkBest == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbcLoad(): There is no best design saved.\n" );
        return 1;
    }
    if ( pAbc->pNtkCur ) Abc_NtkDelete( pAbc->pNtkCur );
    pAbc->pNtkCur = Abc_NtkDup(pAbc->pNtkBest);
    return 0;

usage:
    Abc_Print( -2, "usage: load [-h]\n" );
    Abc_Print( -2, "\t        loads mapped network previously saved by \"save\"\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Read( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Abc3_ReadShowHie( char * pFileName, int fFlat );
    extern Gia_Man_t * Gia_MiniAigSuperDerive( char * pFileName, int fVerbose );
    extern Gia_Man_t * Gia_FileSimpleRead( char * pFileName, int fNames, char * pFileW );
    extern Gia_Man_t * Gia_ManCreateXors( Gia_Man_t * p );
    Gia_Man_t * pAig = NULL;
    FILE * pFile;
    char ** pArgvNew;
    char * FileName, * pTemp;
    int c, nArgcNew;
    int fMiniAig = 0;
    int fMiniAig2 = 0;
    int fMiniLut = 0;
    int fVerbose = 0;
    int fGiaSimple = 0;
    int fSkipStrash = 0;
    int fNewReader = 0;
    int fDetectXors = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "csxmnlpvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fGiaSimple ^= 1;
            break;
        case 's':
            fSkipStrash ^= 1;
            break;
        case 'x':
            fDetectXors ^= 1;
            break;
        case 'm':
            fMiniAig ^= 1;
            break;
        case 'n':
            fMiniAig2 ^= 1;
            break;
        case 'l':
            fMiniLut ^= 1;
            break;
        case 'p':
            fNewReader ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "There is no file name.\n" );
        return 1;
    }

    // get the input file name
    FileName = pArgvNew[0];
    // fix the wrong symbol
    for ( pTemp = FileName; *pTemp; pTemp++ )
        if ( *pTemp == '>' )
            *pTemp = '\\';
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", ".blif", ".pla", ".eqn", ".bench" )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );

    if ( fNewReader )
        pAig = Gia_FileSimpleRead( FileName, fGiaSimple, NULL );
    else if ( fMiniAig )
        pAig = Gia_ManReadMiniAig( FileName, fGiaSimple || fSkipStrash );
    else if ( fMiniAig2 )
        pAig = Gia_MiniAigSuperDerive( FileName, fVerbose );
    else if ( fMiniLut )
        pAig = Gia_ManReadMiniLut( FileName );
//    else if ( Extra_FileIsType( FileName, ".v", NULL, NULL ) )
//        Abc3_ReadShowHie( FileName, fSkipStrash );
    else
    {
        pAig = Gia_AigerRead( FileName, fGiaSimple, fSkipStrash, 0 );
        if ( fDetectXors )
        {
            Gia_Man_t * pTemp;
            pAig = Gia_ManCreateXors( pTemp = pAig );
            Gia_ManStop( pTemp );
        }
    }
    if ( pAig )
        Abc_FrameUpdateGia( pAbc, pAig );
    return 0;

usage:
    Abc_Print( -2, "usage: &r [-csxmnlvh] <file>\n" );
    Abc_Print( -2, "\t         reads the current AIG from the AIGER file\n" );
    Abc_Print( -2, "\t-c     : toggles reading simple AIG [default = %s]\n", fGiaSimple? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggles structural hashing while reading [default = %s]\n", !fSkipStrash? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggles detecting XORs while reading [default = %s]\n", fDetectXors? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggles reading MiniAIG rather than AIGER file [default = %s]\n", fMiniAig? "yes": "no" );
    Abc_Print( -2, "\t-n     : toggles reading MiniAIG as a set of supergates [default = %s]\n", fMiniAig2? "yes": "no" );
    Abc_Print( -2, "\t-l     : toggles reading MiniLUT rather than AIGER file [default = %s]\n", fMiniLut? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles additional verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ReadBlif( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Abc_NtkHieCecTest( char * pFileName, int fVerbose );
    Gia_Man_t * pAig;
    FILE * pFile;
    char ** pArgvNew;
    char * FileName, * pTemp;
    int nArgcNew;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "There is no file name.\n" );
        return 1;
    }

    // get the input file name
    FileName = pArgvNew[0];
    // fix the wrong symbol
    for ( pTemp = FileName; *pTemp; pTemp++ )
        if ( *pTemp == '>' )
            *pTemp = '\\';
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".blif", NULL, NULL, NULL, NULL )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );

    pAig = Abc_NtkHieCecTest( FileName, fVerbose );
    Abc_FrameUpdateGia( pAbc, pAig );
    return 0;

usage:
    Abc_Print( -2, "usage: &read_blif [-vh] <file>\n" );
    Abc_Print( -2, "\t         a specialized reader for hierarchical BLIF files\n" );
    Abc_Print( -2, "\t         (for general-purpose BLIFs, please use \"read_blif\")\n" );
    Abc_Print( -2, "\t-v     : toggles additional verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ReadCBlif( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Abc_NtkHieCecTest2( char * pFileName, char * pModelName, int fVerbose );
    Gia_Man_t * pAig;
    FILE * pFile;
    char ** pArgvNew;
    char * FileName, * pTemp;
    char * pModelName = NULL;
    int nArgcNew;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Mvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a file name.\n" );
                goto usage;
            }
            pModelName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "There is no file name.\n" );
        return 1;
    }

    // get the input file name
    FileName = pArgvNew[0];
    // fix the wrong symbol
    for ( pTemp = FileName; *pTemp; pTemp++ )
        if ( *pTemp == '>' )
            *pTemp = '\\';
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".cblif", NULL, NULL, NULL, NULL )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );

    pAig = Abc_NtkHieCecTest2( FileName, pModelName, fVerbose );
    Abc_FrameUpdateGia( pAbc, pAig );
    return 0;

usage:
    Abc_Print( -2, "usage: &read_cblif [-M name] [-vh] <file>\n" );
    Abc_Print( -2, "\t         reads CBLIF file and collapse it into an AIG\n" );
    Abc_Print( -2, "\t-M name: module name to collapse [default = <root_module>]\n" );
    Abc_Print( -2, "\t-v     : toggles additional verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ReadStg( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pAig;
    FILE * pFile;
    char * FileName, ** pArgvNew;
    int c, nArgcNew;
    int kHot = 1;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Kvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            kHot = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( kHot < 1 || kHot > 5 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "There is no file name.\n" );
        return 1;
    }

    // get the input file name
    FileName = pArgvNew[0];
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        return 1;
    }
    fclose( pFile );

    pAig = Gia_ManStgRead( FileName, kHot, fVerbose );
    Abc_FrameUpdateGia( pAbc, pAig );
    return 0;

usage:
    Abc_Print( -2, "usage: &read_stg [-K <num>] [-vh] <file>\n" );
    Abc_Print( -2, "\t         reads STG file and generates K-hot-encoded AIG\n" );
    Abc_Print( -2, "\t-K num : the K parameter for hotness of the encoding (1 <= K <= 5) [default = %d]\n", kHot );
    Abc_Print( -2, "\t-v     : toggles printing state codes [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ReadVer( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Ntk_t * pNtk;
    Gia_Man_t * pAig;
    FILE * pFile;
    char ** pArgvNew;
    char * pFileName, * pTemp;
    int nArgcNew;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "There is no file name.\n" );
        return 1;
    }

    // get the input file name
    pFileName = pArgvNew[0];
    // fix the wrong symbol
    for ( pTemp = pFileName; *pTemp; pTemp++ )
        if ( *pTemp == '>' )
            *pTemp = '\\';
    if ( (pFile = fopen( pFileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", pFileName );
        if ( (pFileName = Extra_FileGetSimilarName( pFileName, ".v", ".blif", NULL, NULL, NULL )) )
            Abc_Print( 1, "Did you mean \"%s\"?", pFileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );
    // read hierarchical Verilog
    pNtk = Io_ReadNetlist( pFileName, Io_ReadFileType(pFileName), 0 );
    if ( pNtk == NULL )
    {
        Abc_Print( -1, "Reading hierarchical Verilog has failed.\n" );
        return 1;
    }
    pAig = Abc_NtkFlattenHierarchyGia( pNtk, NULL, fVerbose );
    Abc_NtkDelete( pNtk );
    Abc_FrameUpdateGia( pAbc, pAig );
    return 0;

usage:
    Abc_Print( -2, "usage: &read_ver [-vh] <file>\n" );
    Abc_Print( -2, "\t         a specialized reader for hierarchical Verilog files\n" );
    Abc_Print( -2, "\t-v     : toggles additional verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Get( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Aig_Man_t * Abc_NtkToDarChoices( Abc_Ntk_t * pNtk );
    Abc_Ntk_t * pStrash;
    Aig_Man_t * pAig;
    Gia_Man_t * pGia, * pTemp;
    char * pInits;
    int c, fGiaSimple = 0, fMapped = 0, fNames = 0, fReuseNames = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "cmnrvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fGiaSimple ^= 1;
            break;
        case 'm':
            fMapped ^= 1;
            break;
        case 'n':
            fNames ^= 1;
            break;
        case 'r':
            fReuseNames ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pNtkCur == NULL )
    {
        Abc_Print( -1, "There is no current network\n" );
        return 1;
    }
    if ( !Abc_NtkIsStrash( pAbc->pNtkCur ) )
    {
        if ( fGiaSimple || fMapped )
        {
            assert( Abc_NtkIsLogic(pAbc->pNtkCur) );
            Abc_NtkToAig( pAbc->pNtkCur );
            pGia = Abc_NtkAigToGia( pAbc->pNtkCur, fGiaSimple );
        }
        else
        {
            // derive comb GIA
            pStrash = Abc_NtkStrash( pAbc->pNtkCur, 0, 1, 0 );
            pAig = Abc_NtkToDar( pStrash, 0, 0 );
            Abc_NtkDelete( pStrash );
            pGia = Gia_ManFromAig( pAig );
            Aig_ManStop( pAig );
            // perform undc/zero
            pInits = Abc_NtkCollectLatchValuesStr( pAbc->pNtkCur );
            pGia = Gia_ManDupZeroUndc( pTemp = pGia, pInits, 0, 0, fVerbose );
            Gia_ManStop( pTemp );
            ABC_FREE( pInits );
        }
    }
    else
    {
        if ( Abc_NtkGetChoiceNum(pAbc->pNtkCur) )
            pAig = Abc_NtkToDarChoices( pAbc->pNtkCur );
        else
            pAig = Abc_NtkToDar( pAbc->pNtkCur, 0, 1 );
        pGia = Gia_ManFromAig( pAig );
        Aig_ManStop( pAig );
    }
    // copy names
    if ( fNames )
    {
        pGia->vNamesIn  = Abc_NtkCollectCiNames( pAbc->pNtkCur );
        pGia->vNamesOut = Abc_NtkCollectCoNames( pAbc->pNtkCur );
    }
    // copy user timing information
    if ( pAbc->pNtkCur->pManTime != NULL )
    {
        Abc_Ntk_t * pNtk = pAbc->pNtkCur;
        Vec_FltFreeP( &pGia->vInArrs );
        Vec_FltFreeP( &pGia->vOutReqs );
        pGia->DefInArrs  = Abc_NtkReadDefaultArrivalWorst(pNtk);
        pGia->DefOutReqs = Abc_NtkReadDefaultRequiredWorst(pNtk);
        pGia->vInArrs  = Vec_FltAllocArray( Abc_NtkGetCiArrivalFloats(pNtk), Abc_NtkCiNum(pNtk) );
        pGia->vOutReqs = Vec_FltAllocArray( Abc_NtkGetCoRequiredFloats(pNtk), Abc_NtkCoNum(pNtk) );
        pGia->And2Delay = pNtk->AndGateDelay;
    }
    if ( fReuseNames ) 
    {
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( -1, "There is no current AIG to reuse names from.\n" );
            return 1;
        }
        if ( Gia_ManCiNum(pGia) != Gia_ManCiNum(pAbc->pGia) )
        {
            Abc_Print( -1, "The number of CIs differ.\n" );
            return 1;
        }
        if ( Gia_ManCoNum(pGia) != Gia_ManCoNum(pAbc->pGia) )
        {
            Abc_Print( -1, "The number of COs differ.\n" );
            return 1;
        }
        ABC_SWAP( Vec_Ptr_t *, pGia->vNamesIn,  pAbc->pGia->vNamesIn  );
        ABC_SWAP( Vec_Ptr_t *, pGia->vNamesOut, pAbc->pGia->vNamesOut );
    }
    Abc_FrameUpdateGia( pAbc, pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &get [-cmnrvh] <file>\n" );
    Abc_Print( -2, "\t         converts the current network into GIA and moves it to the &-space\n" );
    Abc_Print( -2, "\t         (if the network is a sequential logic network, normalizes the flops\n" );
    Abc_Print( -2, "\t         to have const-0 initial values, equivalent to \"undc; st; zero\")\n" );
    Abc_Print( -2, "\t-c     : toggles allowing simple GIA to be imported [default = %s]\n", fGiaSimple? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggles preserving the current mapping [default = %s]\n", fMapped? "yes": "no" );
    Abc_Print( -2, "\t-n     : toggles saving CI/CO names of the AIG [default = %s]\n", fNames? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggles reusing CI/CO names of the current AIG [default = %s]\n", fReuseNames? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles additional verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Put( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Abc_NtkFromDarChoices( Abc_Ntk_t * pNtkOld, Aig_Man_t * pMan );
    extern void Abc_NtkRedirectCiCo( Abc_Ntk_t * pNtk );
    extern Abc_Ntk_t * Abc_NtkFromCellMappedGia( Gia_Man_t * p, int fUseBuffs );
    extern Abc_Ntk_t * Abc_NtkFromMappedGia( Gia_Man_t * p, int fFindEnables, int fUseBuffs );

    Aig_Man_t * pMan;
    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    int fStatusClear = 1;
    int fFindEnables = 0;
    int fUseBuffs    = 0;
    int c, fVerbose  = 0;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "seovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 's':
            fStatusClear ^= 1;
            break;
        case 'e':
            fFindEnables ^= 1;
            break;
        case 'o':
            fUseBuffs ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( fFindEnables )
        pNtk = Abc_NtkFromMappedGia( pAbc->pGia, 1, fUseBuffs );
    else if ( Gia_ManHasCellMapping(pAbc->pGia) )
        pNtk = Abc_NtkFromCellMappedGia( pAbc->pGia, fUseBuffs );
    else if ( Gia_ManHasMapping(pAbc->pGia) || pAbc->pGia->pMuxes )
        pNtk = Abc_NtkFromMappedGia( pAbc->pGia, 0, fUseBuffs );
    else if ( Gia_ManHasDangling(pAbc->pGia) == 0 )
    {
        pMan = Gia_ManToAig( pAbc->pGia, 0 );
        pNtk = Abc_NtkFromAigPhase( pMan );
        pNtk->pName = Extra_UtilStrsav(pMan->pName);
        Aig_ManStop( pMan );
    }
    else
    {
        Abc_Ntk_t * pNtkNoCh;
        Abc_Print( 0, "Transforming AIG with %d choice nodes.\n", Gia_ManEquivCountClasses(pAbc->pGia) );
        // create network without choices
        pMan = Gia_ManToAig( pAbc->pGia, 0 );
        pNtkNoCh = Abc_NtkFromAigPhase( pMan );
        pNtkNoCh->pName = Extra_UtilStrsav(pMan->pName);
        Aig_ManStop( pMan );
        // derive network with choices
        pMan = Gia_ManToAig( pAbc->pGia, 1 );
        pNtk = Abc_NtkFromDarChoices( pNtkNoCh, pMan );
        Abc_NtkDelete( pNtkNoCh );
        Aig_ManStop( pMan );
    }
    // transfer the spec name to the pNtk
    if( pAbc->pGia->pSpec )
    {
        pNtk->pSpec = Extra_UtilStrsav( pAbc->pGia->pSpec );
    }
    // transfer PI names to pNtk
    if ( pAbc->pGia->vNamesIn )
    {
        Abc_Obj_t * pObj;
        int i;
        Abc_NtkForEachCi( pNtk, pObj, i ) {
            if (i < Vec_PtrSize(pAbc->pGia->vNamesIn)) {
                Nm_ManDeleteIdName(pNtk->pManName, pObj->Id);
                Abc_ObjAssignName( pObj, (char *)Vec_PtrEntry(pAbc->pGia->vNamesIn, i), NULL );
            }
        }
    }
    // transfer PO names to pNtk
    if ( pAbc->pGia->vNamesOut )
    {
        char pSuffix[1000];
        Abc_Obj_t * pObj; int i;
        unsigned char nDigits = (unsigned char)Abc_Base10Log( Abc_NtkLatchNum(pNtk) );
        Abc_NtkForEachCo( pNtk, pObj, i ) {
            if (i < Vec_PtrSize(pAbc->pGia->vNamesOut)) {
                Nm_ManDeleteIdName(pNtk->pManName, pObj->Id);
                if ( Abc_ObjIsPo(pObj) )
                    Abc_ObjAssignName( pObj, (char *)Vec_PtrEntry(pAbc->pGia->vNamesOut, i), NULL );
                else
                {
                    assert( i >= Abc_NtkPoNum(pNtk) );
                    sprintf( pSuffix, "_li%0*d", nDigits, i-Abc_NtkPoNum(pNtk) );
                    Abc_ObjAssignName( pObj, (char *)Vec_PtrEntry(pAbc->pGia->vNamesOut, i), pSuffix );
                }
            }
        }
    }
    if ( pAbc->pGia->vNamesNode )
        Abc_Print( 0, "Internal nodes names are not transferred.\n" );

    // decouple CI/CO with the same name
    if ( !Abc_NtkIsStrash(pNtk) && (pAbc->pGia->vNamesIn || pAbc->pGia->vNamesOut) )
        Abc_NtkRedirectCiCo( pNtk );

    // transfer timing information
    if ( pAbc->pGia->vInArrs || pAbc->pGia->vOutReqs )
    {
        Abc_Obj_t * pObj; int i;
        Abc_NtkTimeInitialize( pNtk, NULL );
        Abc_NtkTimeSetDefaultArrival( pNtk, pAbc->pGia->DefInArrs, pAbc->pGia->DefInArrs );
        Abc_NtkTimeSetDefaultRequired( pNtk, pAbc->pGia->DefOutReqs, pAbc->pGia->DefOutReqs );
        if ( pAbc->pGia->vInArrs )
            Abc_NtkForEachCi( pNtk, pObj, i )
                Abc_NtkTimeSetArrival( pNtk, Abc_ObjId(pObj), Vec_FltEntry(pAbc->pGia->vInArrs, i), Vec_FltEntry(pAbc->pGia->vInArrs, i) );
        if ( pAbc->pGia->vOutReqs )
            Abc_NtkForEachCo( pNtk, pObj, i )
                Abc_NtkTimeSetRequired( pNtk, Abc_ObjId(pObj), Vec_FltEntry(pAbc->pGia->vOutReqs, i), Vec_FltEntry(pAbc->pGia->vOutReqs, i) );
    }

    // replace the current network
    Abc_FrameReplaceCurrentNetwork( pAbc, pNtk );
    if ( fStatusClear )
        Abc_FrameClearVerifStatus( pAbc );
    return 0;

usage:
    Abc_Print( -2, "usage: &put [-seovh]\n" );
    Abc_Print( -2, "\t         transfer the current network into the old ABC\n" );
    Abc_Print( -2, "\t-s     : toggle clearning verification status [default = %s]\n", fStatusClear? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle extracting MUXes for flop enables [default = %s]\n", fFindEnables? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggles using buffers to decouple combinational outputs [default = %s]\n", fUseBuffs? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9MoveNames( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "nvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pNtkCur == NULL )
    {
        Abc_Print( -1, "There is no current network\n" );
        return 1;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "There is no current AIG.\n" );
        return 1;
    }
    if ( Gia_ManCiNum(pAbc->pGia) != Abc_NtkCiNum(pAbc->pNtkCur) )
    {
        Abc_Print( -1, "The number of CIs does not match.\n" );
        return 1;
    }
    if ( Gia_ManCoNum(pAbc->pGia) != Abc_NtkCoNum(pAbc->pNtkCur) )
    {
        Abc_Print( -1, "The number of COs does not match.\n" );
        return 1;
    }
    if ( pAbc->pGia->vNamesIn  )    Vec_PtrFreeFree( pAbc->pGia->vNamesIn );
    if ( pAbc->pGia->vNamesOut )    Vec_PtrFreeFree( pAbc->pGia->vNamesOut );
    pAbc->pGia->vNamesIn  = Abc_NtkCollectCiNames( pAbc->pNtkCur );
    pAbc->pGia->vNamesOut = Abc_NtkCollectCoNames( pAbc->pNtkCur );
    return 0;

usage:
    Abc_Print( -2, "usage: &move_names [-vh]\n" );
    Abc_Print( -2, "\t         move CI/CO names\n" );
    Abc_Print( -2, "\t-v     : toggles additional verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    [Compares to versions of the design and finds the best.]

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
static inline int Gia_ManCompareWithBest( Gia_Man_t * pBest, Gia_Man_t * p, int * pnBestLuts, int * pnBestEdges, int * pnBestLevels, int fArea )
{
    int nCurLuts, nCurEdges, nCurLevels;
    Gia_ManLutParams( p, &nCurLuts, &nCurEdges, &nCurLevels );
    if ( pBest == NULL ||
         Gia_ManPiNum(pBest) != Gia_ManPiNum(p) ||
         Gia_ManPoNum(pBest) != Gia_ManPoNum(p) ||
         Gia_ManRegNum(pBest) != Gia_ManRegNum(p) ||
         strcmp(Gia_ManName(pBest), Gia_ManName(p)) ||
         (!fArea && (*pnBestLevels > nCurLevels || (*pnBestLevels == nCurLevels && 2*(*pnBestLuts) + *pnBestEdges > 2*nCurLuts + nCurEdges))) ||
         ( fArea && (*pnBestLuts   > nCurLuts   || (*pnBestLuts   == nCurLuts   && *pnBestLevels > nCurLevels)))
       )
    {
        *pnBestLuts = nCurLuts;
        *pnBestEdges = nCurEdges;
        *pnBestLevels = nCurLevels;
        //printf( "\nUpdating best (%d %d %d).\n\n", nCurLuts, nCurEdges, nCurLevels );
        return 1;
    }
    return 0;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Save( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fArea = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ah" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fArea ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "GIA has no mapping.\n" );
        return 1;
    }
    if ( !Gia_ManCompareWithBest( pAbc->pGiaBest, pAbc->pGia, &pAbc->nBestLuts, &pAbc->nBestEdges, &pAbc->nBestLevels, fArea ) )
        return 0;
    // save the design as best
    Gia_ManStopP( &pAbc->pGiaBest );
    pAbc->pGiaBest = Gia_ManDupWithAttributes( pAbc->pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &save [-ah]\n" );
    Abc_Print( -2, "\t        compares and possibly saves AIG with mapping\n" );
    Abc_Print( -2, "\t-a    : toggle using area as the primary metric [default = %s]\n", fArea? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Save2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fArea = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ah" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fArea ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "GIA has no mapping.\n" );
        return 1;
    }
    if ( !Gia_ManCompareWithBest( pAbc->pGiaBest2, pAbc->pGia, &pAbc->nBestLuts2, &pAbc->nBestEdges2, &pAbc->nBestLevels2, fArea ) )
        return 0;
    // save the design as best
    Gia_ManStopP( &pAbc->pGiaBest2 );
    pAbc->pGiaBest2 = Gia_ManDupWithAttributes( pAbc->pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &save2 [-ah]\n" );
    Abc_Print( -2, "\t        compares and possibly saves AIG with mapping\n" );
    Abc_Print( -2, "\t-a    : toggle using area as the primary metric [default = %s]\n", fArea? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SaveAig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fClear = 0, fArea = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "cah" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fClear ^= 1;
            break;
        case 'a':
            fArea ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty network.\n" );
        return 1;
    }
    if ( fClear && pAbc->pGiaSaved != NULL )
        Gia_ManStopP( &pAbc->pGiaSaved );
    if ( fArea && pAbc->pGiaSaved != NULL && Gia_ManAndNum(pAbc->pGiaSaved) <= Gia_ManAndNum(pAbc->pGia) )
        return 0;
    if ( !fArea && pAbc->pGiaSaved != NULL && !(Gia_ManLevelNum(pAbc->pGiaSaved) > Gia_ManLevelNum(pAbc->pGia) || (Gia_ManLevelNum(pAbc->pGiaSaved) == Gia_ManLevelNum(pAbc->pGia) && Gia_ManAndNum(pAbc->pGiaSaved) > Gia_ManAndNum(pAbc->pGia))) )
        return 0;
    // save the design as best
    Gia_ManStopP( &pAbc->pGiaSaved );
    pAbc->pGiaSaved = Gia_ManDupWithAttributes( pAbc->pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &saveaig [-cah]\n" );
    Abc_Print( -2, "\t        saves the current AIG into the internal storage\n" );
    Abc_Print( -2, "\t-c    : toggle clearing the saved AIG [default = %s]\n", fClear? "yes": "no" );
    Abc_Print( -2, "\t-a    : toggle saving AIG with the smaller area [default = %s]\n", fArea? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Load( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    // restore from best
    if ( pAbc->pGiaBest == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Load(): There is no best design saved.\n" );
        return 1;
    }
    Gia_ManStopP( &pAbc->pGia );
    pAbc->pGia = Gia_ManDupWithAttributes( pAbc->pGiaBest );
    return 0;

usage:
    Abc_Print( -2, "usage: &load [-h]\n" );
    Abc_Print( -2, "\t        loads AIG with mapping previously saved by &save\n" );
    Abc_Print( -2, "\t        (after loading the previously saved AIG can be loaded again)\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Load2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    // restore from best
    if ( pAbc->pGiaBest2 == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Load2(): There is no best design saved.\n" );
        return 1;
    }
    Gia_ManStopP( &pAbc->pGia );
    pAbc->pGia = pAbc->pGiaBest2;
    pAbc->pGiaBest2 = NULL;
    pAbc->nBestLuts2 = 0;
    pAbc->nBestEdges2 = 0;
    pAbc->nBestLevels2 = 0;
    return 0;

usage:
    Abc_Print( -2, "usage: &load2 [-h]\n" );
    Abc_Print( -2, "\t        loads AIG with mapping previously saved by &save2\n" );
    Abc_Print( -2, "\t        (after loading the previously saved AIG cannot be loaded again)\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9LoadAig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    // restore from best
    if ( pAbc->pGiaSaved == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9LoadAig(): There is no design saved.\n" );
        return 1;
    }
    Gia_ManStopP( &pAbc->pGia );
    pAbc->pGia = Gia_ManDupWithAttributes( pAbc->pGiaSaved );
    return 0;

usage:
    Abc_Print( -2, "usage: &loadaig [-h]\n" );
    Abc_Print( -2, "\t        loads AIG previously saved by &saveaig\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9WriteVer( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_WriteVerilogInt( char * pFileName, Gia_Man_t * pGia, int fUseGates, int fVerbose, int fUseCtrlPis );
    extern void Gia_WriteMappedVerilog( char * pFileName, Gia_Man_t * pGia, int fVerbose );
    char * pFileSpec = NULL;
    Abc_Ntk_t * pNtkSpec = NULL;
    char * pFileName;
    char ** pArgvNew;
    int c, nArgcNew;
    int fUseCtrlPis = 0;
    int fUseGates = 0;
    int fUseLuts = 0;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Scglvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a file name.\n" );
                goto usage;
            }
            pFileSpec = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'c':
            fUseCtrlPis ^= 1;
            break;
        case 'g':
            fUseGates ^= 1;
            break;
        case 'l':
            fUseLuts ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "Expecting output file name on the command line.\n" );
        return 1;
    }
    pFileName = argv[globalUtilOptind];
    if ( pFileSpec == NULL )
    {
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( -1, "There is no AIG to write.\n" );
            return 1;
        }
        // Check if we should write LUT-based Verilog
        if ( fUseLuts )
        {
            if ( !Gia_ManHasMapping(pAbc->pGia) )
            {
                Abc_Print( -1, "Cannot write LUT-based Verilog because AIG is not mapped.\n" );
                Abc_Print( -1, "Use \"&if\" to map the AIG first, or omit the -l flag.\n" );
                return 1;
            }
            Gia_WriteMappedVerilog( pFileName, pAbc->pGia, fVerbose );
        }
        else
        {
            Gia_WriteVerilogInt( pFileName, pAbc->pGia, fUseGates, fVerbose, fUseCtrlPis );
        }
    }
    else
    {
        if ( pAbc->pNtkCur == NULL )
        {
            Abc_Print( -1, "There is no mapped file to write.\n" );
            return 1;
        }
        pNtkSpec = Io_ReadNetlist( pFileSpec, Io_ReadFileType(pFileSpec), 0 );
        if ( pNtkSpec == NULL )
        {
            Abc_Print( -1, "Reading hierarchical Verilog for the specification has failed.\n" );
            return 1;
        }
        Abc_NtkInsertHierarchyGia( pNtkSpec, pAbc->pNtkCur, fVerbose );
        Io_WriteVerilog( pNtkSpec, pFileName, 0, 0 );
        Abc_NtkDelete( pNtkSpec );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &write_ver [-S <file>] [-cglvh] <file>\n" );
    Abc_Print( -2, "\t          writes hierarchical Verilog\n" );
    Abc_Print( -2, "\t-S file : file name for the original design (required when hierarchy is present)\n" );
    Abc_Print( -2, "\t-c      : add clk/rst ports for seq AIGs [default = %s]\n", fUseCtrlPis? "no": "yes" );
    Abc_Print( -2, "\t-g      : toggle output gates vs assign-statements [default = %s]\n", fUseGates? "gates": "assigns" );
    Abc_Print( -2, "\t-l      : write LUT6-based Verilog for mapped AIGs [default = %s]\n", fUseLuts? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t<file>  : the file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Write( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * pFileName;
    char ** pArgvNew;
    int c, nArgcNew;
    int fUnique  = 0;
    int fVerilog = 0;
    int fVerNand = 0;
    int fInter   = 0;
    int fInterComb = 0;
    int fAssign  = 0;
    int fVerBufs = 0;
    int fMiniAig = 0;
    int fMiniLut = 0;
    int fWriteNewLine = 0;
    int fReverse = 0;
    int fSkipComment = 0;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "upqicabmlnrsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'u':
            fUnique ^= 1;
            break;
        case 'p':
            fVerilog ^= 1;
            break;
        case 'q':
            fVerNand ^= 1;
            break;
        case 'i':
            fInter ^= 1;
            break;
        case 'c':
            fInterComb ^= 1;
            break;      
        case 'a':
            fAssign ^= 1;
            break;                        
        case 'b':
            fVerBufs ^= 1;
            break;
        case 'm':
            fMiniAig ^= 1;
            break;
        case 'l':
            fMiniLut ^= 1;
            break;
        case 'n':
            fWriteNewLine ^= 1;
            break;
        case 'r':
            fReverse ^= 1;
            break;            
        case 's':
            fSkipComment ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "There is no file name.\n" );
        return 1;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Write(): There is no AIG to write.\n" );
        return 1;
    }
    pFileName = argv[globalUtilOptind];
    if ( fUnique )
    {
        Gia_Man_t * pGia = Gia_ManIsoCanonicize( pAbc->pGia, fVerbose );
        Gia_AigerWriteSimple( pGia, pFileName );
        Gia_ManStop( pGia );
    }
    else if ( fVerNand )
        Gia_ManDumpVerilogNand( pAbc->pGia, pFileName );
    else if ( fVerilog )
        Gia_ManDumpVerilog( pAbc->pGia, pFileName, NULL, fVerBufs, fInter, fInterComb, fAssign, fReverse );
    else if ( fMiniAig )
        Gia_ManWriteMiniAig( pAbc->pGia, pFileName );
    else if ( fMiniLut )
        Gia_ManWriteMiniLut( pAbc->pGia, pFileName );
    else
        Gia_AigerWriteS( pAbc->pGia, pFileName, 0, 0, fWriteNewLine, fSkipComment );
    return 0;

usage:
    Abc_Print( -2, "usage: &w [-upqicabmlnsvh] <file>\n" );
    Abc_Print( -2, "\t         writes the current AIG into the AIGER file\n" );
    Abc_Print( -2, "\t-u     : toggle writing canonical AIG structure [default = %s]\n", fUnique? "yes" : "no" );
    Abc_Print( -2, "\t-p     : toggle writing Verilog with 'and' and 'not' [default = %s]\n", fVerilog? "yes" : "no" );
    Abc_Print( -2, "\t-q     : toggle writing Verilog with NAND-gates [default = %s]\n", fVerNand? "yes" : "no" );
    Abc_Print( -2, "\t-i     : toggle writing the interface module in Verilog [default = %s]\n", fInter? "yes" : "no" );
    Abc_Print( -2, "\t-c     : toggle writing the interface module in Verilog [default = %s]\n", fInterComb? "yes" : "no" );
    Abc_Print( -2, "\t-a     : toggle writing the interface module with assign-statements [default = %s]\n", fAssign? "yes" : "no" );
    Abc_Print( -2, "\t-b     : toggle writing additional buffers in Verilog [default = %s]\n", fVerBufs? "yes" : "no" );
    Abc_Print( -2, "\t-m     : toggle writing MiniAIG rather than AIGER [default = %s]\n", fMiniAig? "yes" : "no" );
    Abc_Print( -2, "\t-l     : toggle writing MiniLUT rather than AIGER [default = %s]\n", fMiniLut? "yes" : "no" );
    Abc_Print( -2, "\t-n     : toggle writing \'\\n\' after \'c\' in the AIGER file [default = %s]\n", fWriteNewLine? "yes": "no" );
    //Abc_Print( -2, "\t-r     : toggle reversing the order of input/output bits [default = %s]\n", fReverse? "yes": "no" );    
    Abc_Print( -2, "\t-s     : toggle skipping the timestamp in the output file [default = %s]\n", fSkipComment? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9WriteLut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_AigerWriteLut( Gia_Man_t * pGia, char * pFileName );
    char * pFileName;
    char ** pArgvNew;
    int c, nArgcNew;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "There is no file name.\n" );
        return 1;
    }
    pFileName = argv[globalUtilOptind];
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9WriteLut(): There is no AIG to write.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9WriteLut(): AIG has no mapping.\n" );
        return 1;
    }
    Gia_AigerWriteLut( pAbc->pGia, pFileName );
    return 0;

usage:
    Abc_Print( -2, "usage: &wlut [-umvh] <file>\n" );
    Abc_Print( -2, "\t         writes the the current LUT mapping into a binary file\n" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the file name\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Ps( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gps_Par_t Pars, * pPars = &Pars;
    int c, fBest = 0;
    memset( pPars, 0, sizeof(Gps_Par_t) );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Dtpcnlmasozxbh" ) ) != EOF )
    {
        switch ( c )
        {
        case 't':
            pPars->fTents ^= 1;
            break;
        case 'p':
            pPars->fSwitch ^= 1;
            break;
        case 'c':
            pPars->fCut ^= 1;
            break;
        case 'n':
            pPars->fNpn ^= 1;
            break;
        case 'l':
            pPars->fLutProf ^= 1;
            break;
        case 'm':
            pPars->fMuxXor ^= 1;
            break;
        case 'a':
            pPars->fMiter ^= 1;
            break;
        case 's':
            pPars->fSlacks ^= 1;
            break;
        case 'o':
            pPars->fMapOutStats ^= 1;
            break;
        case 'z':
            pPars->fSkipMap ^= 1;
            break;
        case 'x':
            pPars->fNoColor ^= 1;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a file name.\n" );
                goto usage;
            }
            pPars->pDumpFile = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'b':
            fBest ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( fBest )
    {
        if ( pAbc->pGiaBest == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9Ps(): There is no AIG.\n" );
            return 0;
        }
        Gia_ManPrintStats( pAbc->pGiaBest, pPars );
    }
    else
    {
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9Ps(): There is no AIG.\n" );
            return 0;
        }
        Gia_ManPrintStats( pAbc->pGia, pPars );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &ps [-tpcnlmasozxbh] [-D file]\n" );
    Abc_Print( -2, "\t          prints stats of the current AIG\n" );
    Abc_Print( -2, "\t-t      : toggle printing BMC tents [default = %s]\n",                pPars->fTents? "yes": "no" );
    Abc_Print( -2, "\t-p      : toggle printing switching activity [default = %s]\n",       pPars->fSwitch? "yes": "no" );
    Abc_Print( -2, "\t-c      : toggle printing the size of frontier cut [default = %s]\n", pPars->fCut? "yes": "no" );
    Abc_Print( -2, "\t-n      : toggle printing NPN classes of functions [default = %s]\n", pPars->fNpn? "yes": "no" );
    Abc_Print( -2, "\t-l      : toggle printing LUT size profile [default = %s]\n",         pPars->fLutProf? "yes": "no" );
    Abc_Print( -2, "\t-m      : toggle printing MUX/XOR statistics [default = %s]\n",       pPars->fMuxXor? "yes": "no" );
    Abc_Print( -2, "\t-a      : toggle printing miter statistics [default = %s]\n",         pPars->fMiter? "yes": "no" );
    Abc_Print( -2, "\t-s      : toggle printing slack distribution [default = %s]\n",       pPars->fSlacks? "yes": "no" );
    Abc_Print( -2, "\t-o      : toggle printing mapping output stats [default = %s]\n",     pPars->fMapOutStats? "yes": "no" );
    Abc_Print( -2, "\t-z      : skip mapping statistics even if mapped [default = %s]\n",   pPars->fSkipMap? "yes": "no" );
    Abc_Print( -2, "\t-x      : toggle using no color in the printout [default = %s]\n",    pPars->fNoColor? "yes": "no" );
    Abc_Print( -2, "\t-b      : toggle printing saved AIG statistics [default = %s]\n",     fBest? "yes": "no" );
    Abc_Print( -2, "\t-D file : file name to dump statistics [default = none]\n" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9PFan( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    int nNodes = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nNodes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodes < 0 )
                goto usage;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9PFan(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManPrintFanio( pAbc->pGia, nNodes );
    return 0;

usage:
    Abc_Print( -2, "usage: &pfan [-N num] [-h]\n" );
    Abc_Print( -2, "\t         prints fanin/fanout statistics\n" );
    Abc_Print( -2, "\t-N num : the number of high-fanout nodes to explore [default = %d]\n", nNodes );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Pms( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Obj_t * pObj;
    int c, nSat = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9PFan(): There is no AIG.\n" );
        return 1;
    }
    printf( "Status of %d outputs of the miter: ", Gia_ManPoNum(pAbc->pGia) );
    Gia_ManForEachPo( pAbc->pGia, pObj, c )
    {
        printf( "%d", c );
        if ( pAbc->pGia->vNamesOut )
           printf( "(%s)", (char *)Vec_PtrEntry(pAbc->pGia->vNamesOut, c) );
        printf( "=%s ", Gia_ObjFaninLit0p(pAbc->pGia, pObj) == 0 ? "unsat":"sat" );
        nSat += Gia_ObjFaninLit0p(pAbc->pGia, pObj) != 0;
    }
    printf( "\n" );
    printf( "Total sat = %d. Total unsat = %d.\n", nSat, Gia_ManPoNum(pAbc->pGia)-nSat );
    return 0;

usage:
    Abc_Print( -2, "usage: &pms [-h]\n" );
    Abc_Print( -2, "\t         prints miter status after SAT sweeping\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9PSig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    int fSetReset = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "rh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'r':
            fSetReset ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9PSigs(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9PSigs(): Works only for sequential circuits.\n" );
        return 1;
    }
    Gia_ManDetectSeqSignals( pAbc->pGia, fSetReset, 1 );
    return 0;

usage:
    Abc_Print( -2, "usage: &psig [-rh]\n" );
    Abc_Print( -2, "\t         prints enable/set/reset statistics\n" );
    Abc_Print( -2, "\t-r     : toggle printing set/reset signals [default = %s]\n", fSetReset? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Status( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Status(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManPrintMiterStatus( pAbc->pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &status [-h]\n" );
    Abc_Print( -2, "\t         prints status of the miter\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9MuxProfile( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManMuxProfiling( Gia_Man_t * p );
    extern void Gia_ManProfileStructures( Gia_Man_t * p, int nLimit, int fVerbose );
    extern void Acec_StatsCollect( Gia_Man_t * p, int fVerbose );
    extern void Acec_ManProfile( Gia_Man_t * p, int fVerbose );
    int c, fNpn = 0, fMuxes = 0, fAdders = 0, nLimit = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nnmavh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLimit < 0 )
                goto usage;
            break;
        case 'n':
            fNpn ^= 1;
            break;
        case 'm':
            fMuxes ^= 1;
            break;
        case 'a':
            fAdders ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9MuxProfile(): There is no AIG.\n" );
        return 1;
    }
    if ( fNpn )
    {
        if ( !Gia_ManHasMapping(pAbc->pGia) || Gia_ManLutSizeMax(pAbc->pGia) >= 4 )
        {
            Abc_Print( -1, "Abc_CommandAbc9MuxProfile(): Expecting AIG mapped into 3-LUTs.\n" );
            return 1;
        }
        Acec_StatsCollect( pAbc->pGia, fVerbose );
    }
    else if ( fMuxes )
        Gia_ManMuxProfiling( pAbc->pGia );
    else if ( fAdders )
        Acec_ManProfile( pAbc->pGia, fVerbose );
    else
        Gia_ManProfileStructures( pAbc->pGia, nLimit, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &profile [-N num] [-nmavh]\n" );
    Abc_Print( -2, "\t         profile gate structures appearing in the AIG\n" );
    Abc_Print( -2, "\t-N num : limit on class size to show [default = %d]\n", nLimit );
    Abc_Print( -2, "\t-n     : toggle profiling NPN-classes (for 3-LUT mapped AIGs) [default = %s]\n", fNpn? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle profiling MUX structures [default = %s]\n", fMuxes? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle profiling adder structures [default = %s]\n", fAdders? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9MuxPos( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupWithMuxPos( Gia_Man_t * p );
    Gia_Man_t * pGia;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9MuxPos(): There is no AIG.\n" );
        return 1;
    }
    pGia = Gia_ManDupWithMuxPos( pAbc->pGia );
    Abc_FrameUpdateGia( pAbc, pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &muxpos [-vh]\n" );
    Abc_Print( -2, "\t         create additional POs to preserve MUXes\n" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9MuxStr( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManCofStructure( Gia_Man_t * p );
    Gia_Man_t * pGia;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9MuxStr(): There is no AIG.\n" );
        return 1;
    }
    pGia = Gia_ManCofStructure( pAbc->pGia );
    Abc_FrameUpdateGia( pAbc, pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &muxstr [-vh]\n" );
    Abc_Print( -2, "\t         performs restructuring\n" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9MuxDec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManPerformMuxDec( Gia_Man_t * p );
    Gia_Man_t * pGia;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9MuxDec(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManCiNum(pAbc->pGia) <= 6 || Gia_ManCiNum(pAbc->pGia) > 26 )
    {
        Abc_Print( -1, "Abc_CommandAbc9MuxDec(): The number of inputs is wrong.\n" );
        return 1;
    }
    pGia = Gia_ManPerformMuxDec( pAbc->pGia );
    Abc_FrameUpdateGia( pAbc, pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &muxdec [-vh]\n" );
    Abc_Print( -2, "\t         performs restructuring\n" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9PrintTruth( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern word Gia_LutComputeTruth6Simple( Gia_Man_t * p, int iPo );
    int i, c, iOutNum = 0, nOutRange = -1, fVerbose = 0; word Truth;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ORvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            iOutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iOutNum < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nOutRange = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nOutRange < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9PrintTruth(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManPiNum(pAbc->pGia) > 6 )
    {
        Abc_Print( -1, "The number of inputs of the AIG exceeds 6.\n" );
        return 1;
    }
    if ( iOutNum < 0 || iOutNum + nOutRange > Gia_ManPoNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9PrintTruth(): Range of outputs to extract is incorrect.\n" );
        return 1;
    }
    if ( nOutRange == -1 )
        nOutRange = Gia_ManCoNum(pAbc->pGia);
    for ( i = iOutNum; i < iOutNum + nOutRange; i++ )
    {
        Truth = Gia_LutComputeTruth6Simple( pAbc->pGia, i );
        printf( "Output %8d : ", i );
        Extra_PrintHex( stdout, (unsigned *)&Truth, Gia_ManCiNum(pAbc->pGia) );
        printf( "\n" );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &print_truth [-OR num] [-vh]\n" );
    Abc_Print( -2, "\t         prints truth tables of outputs in hex notation\n" );
    Abc_Print( -2, "\t-O num : the index of first PO to print [default = %d]\n", iOutNum );
    Abc_Print( -2, "\t-R num : (optional) the number of outputs to extract [default = all]\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Unate( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManCheckUnateTest( Gia_Man_t * p, int fComputeAll, int fVerbose );
    int c, fComputeAll = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "avh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fComputeAll ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Unate(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManCheckUnateTest( pAbc->pGia, fComputeAll, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &unate [-avh]\n" );
    Abc_Print( -2, "\t         prints info about unatements of CO funcs in terms of CI vars\n" );
    Abc_Print( -2, "\t-a     : toggle using efficient computation for all pairs [default = %s]\n", fComputeAll? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Rex2Gia( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManRex2Gia( char * pStr, int fOrder, int fVerbose );
    Gia_Man_t * pGia = NULL;
    char * pStr = NULL;
    char ** pArgvNew;
    int nArgcNew;
    int c, fOrder = 1, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "avh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fOrder ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "No regular expression is entered on the command line.\n" );
        return 1;
    }
    pStr = pArgvNew[0];
    pGia = Gia_ManRex2Gia( pStr, fOrder, fVerbose );
    if ( pGia )
        Abc_FrameUpdateGia( pAbc, pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &rex2gia [-avh] [string]\n" );
    Abc_Print( -2, "\t         converts a regular expression into a sequential AIG\n" );
    Abc_Print( -2, "\t-a     : toggle ordering input symbols alphabetically [default = %s]\n", fOrder? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tstring : representation of a regular expression\n");
    Abc_Print( -2, "\t         Special symbols: parentheses \'(\' and \')\', Kleene closure \'*\', union \'|'\n");
    Abc_Print( -2, "\t         All other characters are treated as symbols of the input alphabet.\n");
    Abc_Print( -2, "\t         For example, ((A*B|AC)D) is defined over the alphabet {A, B, C, D}\n");
    Abc_Print( -2, "\t         and generates the following language: {BD, ABD, AABD, AAABD, ..., ACD}\n");
    Abc_Print( -2, "\t         A known limitation:  For the command to work correctly, each two-input union\n");
    Abc_Print( -2, "\t         should have a dedicated pair of parentheses: ((A|B)|C) rather than (A|B|C)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9RexWalk( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManAutomWalk( Gia_Man_t * p, int nSteps, int nWalks, int fVerbose );
    int c, nSteps = 50, nWalks = 5, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "SRvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nSteps = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSteps < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nWalks = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWalks < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Show(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManAutomWalk( pAbc->pGia, nSteps, nWalks, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &rexwalk [-SR] [-vh]\n" );
    Abc_Print( -2, "\t         performs simulation of an AIG representing a regular expression\n" );
    Abc_Print( -2, "\t-S num : the number of steps to take [default = %d]\n", nSteps );
    Abc_Print( -2, "\t-R num : the number of walks to make [default = %d]\n", nWalks );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Show( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Vec_Int_t * vBold = NULL;
    int c, fAdders = 0, fFadds = 0, fPath = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "afph" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fAdders ^= 1;
            break;
        case 'f':
            fFadds ^= 1;
            break;
        case 'p':
            fPath ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Show(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManBufNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Show(): Cannot show GIA with barrier buffers.\n" );
        return 1;
    }
    if ( !fAdders && Gia_ManHasMapping(pAbc->pGia) )
    {
        vBold = Vec_IntAlloc( 100 );
        Gia_ManForEachLut( pAbc->pGia, c )
            Vec_IntPush( vBold, c );
    }
    Gia_ManShow( pAbc->pGia, vBold, fAdders, fFadds, fPath );
    Vec_IntFreeP( &vBold );
    return 0;

usage:
    Abc_Print( -2, "usage: &show [-afph]\n" );
    Abc_Print( -2, "\t        shows the current GIA using GSView\n" );
    Abc_Print( -2, "\t-a    : toggle visualazing adders [default = %s]\n", fAdders? "yes": "no" );
    Abc_Print( -2, "\t-f    : toggle showing only full-adders with \"-a\" [default = %s]\n", fFadds? "yes": "no" );
    Abc_Print( -2, "\t-p    : toggle showing the critical path of a LUT mapping [default = %s]\n", fPath? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SetRegNum( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, nRegNum = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nRegNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRegNum < 0 )
                goto usage;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SetRegNum(): There is no AIG.\n" );
        return 1;
    }
    if ( nRegNum >= Gia_ManCiNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9SetRegNum(): The number of registers should be less than the number of CIs.\n" );
        return 1;
    }
    if ( nRegNum >= Gia_ManCoNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9SetRegNum(): The number of registers should be less than the number of COs.\n" );
        return 1;
    }
    pAbc->pGia->nRegs = nRegNum;
    return 0;

usage:
    Abc_Print( -2, "usage: &setregnum [-N num] [-h]\n" );
    Abc_Print( -2, "\t         manually sets the number of registers to combine the last PI/PO pairs\n" );
    Abc_Print( -2, "\t-N num : set the number of registers to be the given number [default = %d]\n", nRegNum );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Strash( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupMuxRestructure( Gia_Man_t * p );
    extern Gia_Man_t * Gia_ManDupUnhashMapping( Gia_Man_t * p );
    Gia_Man_t * pTemp;
    int c, Limit = 2;
    int Multi = 0;
    int fAddBuffs  = 0;
    int fAddStrash = 0;
    int fCollapse  = 0;
    int fAddMuxes  = 0;
    int fStrMuxes  = 0;
    int fRehashMap = 0;
    int fUnhashMap = 0;
    int fInvert    = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "LMbacmrusih" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            Limit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Limit < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            Multi = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Multi <= 0 )
                goto usage;
            break;
        case 'b':
            fAddBuffs ^= 1;
            break;
        case 'a':
            fAddStrash ^= 1;
            break;
        case 'c':
            fCollapse ^= 1;
            break;
        case 'm':
            fAddMuxes ^= 1;
            break;
        case 'r':
            fRehashMap ^= 1;
            break;
        case 'u':
            fUnhashMap ^= 1;
            break;
        case 's':
            fStrMuxes ^= 1;
            break;
        case 'i':
            fInvert ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Strash(): There is no AIG.\n" );
        return 1;
    }
    if ( fInvert )
    {
        Gia_Obj_t * pObj; int i;
        Gia_ManForEachPo( pAbc->pGia, pObj, i )
            Gia_ObjFlipFaninC0( pObj );
        return 0;        
    }
    if ( fAddBuffs )
    {
        extern Gia_Man_t * Gia_ManDupAddBufs( Gia_Man_t * p );
        pTemp = Gia_ManDupAddBufs( pAbc->pGia );
        Abc_FrameUpdateGia( pAbc, pTemp );
        return 0;
    }
    if ( Multi > 0 )
    {
        extern Gia_Man_t * Gia_ManDupAddPis( Gia_Man_t * p, int nMulti );
        pTemp = Gia_ManDupAddPis( pAbc->pGia, Multi );
        Abc_FrameUpdateGia( pAbc, pTemp );
        return 0;
    }
    if ( fStrMuxes )
    {
        if ( Gia_ManHasMapping(pAbc->pGia) )
            Abc_Print( 0, "Restructing the current AIG destroys the LUT mapping.\n" );
        Vec_IntFreeP( &pAbc->pGia->vMapping );
        pTemp = Gia_ManDupMuxRestructure( pAbc->pGia );
        Abc_Print( 1, "Finished AIG restructing to enable efficient mapping of 4:1 MUXes into 4-LUTs.\n" );
    }
    else if ( Gia_ManHasMapping(pAbc->pGia) && fRehashMap )
    {
        pTemp = Gia_ManDupHashMapping( pAbc->pGia );
        Gia_ManTransferPacking( pTemp, pAbc->pGia );
        Gia_ManTransferTiming( pTemp, pAbc->pGia );
    }
    else if ( Gia_ManHasMapping(pAbc->pGia) && fUnhashMap )
    {
        pTemp = Gia_ManDupUnhashMapping( pAbc->pGia );
        Gia_ManTransferPacking( pTemp, pAbc->pGia );
        Gia_ManTransferTiming( pTemp, pAbc->pGia );
    }
    else if ( Gia_ManHasMapping(pAbc->pGia) && pAbc->pGia->vConfigs2 )
        pTemp = (Gia_Man_t *)If_ManDeriveGiaFromCells2( pAbc->pGia );
    else if ( Gia_ManHasMapping(pAbc->pGia) && pAbc->pGia->vConfigs )
        pTemp = (Gia_Man_t *)If_ManDeriveGiaFromCells( pAbc->pGia );
    else if ( Gia_ManHasMapping(pAbc->pGia) )
        pTemp = (Gia_Man_t *)Dsm_ManDeriveGia( pAbc->pGia, fAddMuxes ); // delay-oriented unmapping
    else if ( fAddMuxes )
    {
        if ( pAbc->pGia->pMuxes )
        {
            Abc_Print( -1, "Abc_CommandAbc9Strash(): The AIG already has MUXes.\n" );
            return 1;
        }
        pTemp = Gia_ManDupMuxes( pAbc->pGia, Limit );
        if ( !Abc_FrameReadFlag("silentmode") )
            printf( "Generated AND/XOR/MUX graph.\n" );
    }
    else if ( fCollapse && pAbc->pGia->pAigExtra )
    {
        assert( !Gia_ManBufNum(pAbc->pGia) );
        if ( Gia_ManIsSeqWithBoxes(pAbc->pGia) || Gia_ManRegBoxNum(pAbc->pGia) )
        {
            Gia_Man_t * pUnshuffled = Gia_ManDupUnshuffleInputs( pAbc->pGia );
            Gia_ManTransferTiming( pUnshuffled, pAbc->pGia );
            pTemp = Gia_ManDupCollapse( pUnshuffled, pUnshuffled->pAigExtra, NULL, Gia_ManRegBoxNum(pUnshuffled) > 0 );
            Gia_ManTransferTiming( pAbc->pGia, pUnshuffled );
            Gia_ManStop( pUnshuffled );
        }
        else
            pTemp = Gia_ManDupCollapse( pAbc->pGia, pAbc->pGia->pAigExtra, NULL, 0 );
        if ( !Abc_FrameReadFlag("silentmode") )
            printf( "Collapsed AIG with boxes and logic of the boxes.\n" );
    }
    else if ( pAbc->pGia->pMuxes )
    {
        pTemp = Gia_ManDupNoMuxes( pAbc->pGia, 0 );
        if ( !Abc_FrameReadFlag("silentmode") )
            printf( "Generated AIG from AND/XOR/MUX graph.\n" );
    }
    else
    {
        pTemp = Gia_ManRehash( pAbc->pGia, fAddStrash );
//        if ( !Abc_FrameReadFlag("silentmode") )
//            printf( "Rehashed the current AIG.\n" );
    }
    if ( !(fCollapse && pAbc->pGia->pAigExtra) )
    {
        Gia_ManTransferTiming( pTemp, pAbc->pGia );
        pAbc->pGia->vConfigs = pTemp->vConfigs;     pTemp->vConfigs = NULL;
        pAbc->pGia->pCellStr = pTemp->pCellStr;     pTemp->pCellStr = NULL;
        pAbc->pGia->vConfigs2= pTemp->vConfigs2;    pTemp->vConfigs2= NULL;
    }
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &st [-LM num] [-bacmrusih]\n" );
    Abc_Print( -2, "\t         performs structural hashing\n" );
    Abc_Print( -2, "\t-b     : toggle adding buffers at the inputs and outputs [default = %s]\n", fAddBuffs? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle additional hashing [default = %s]\n", fAddStrash? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle collapsing hierarchical AIG [default = %s]\n", fCollapse? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle converting to larger gates [default = %s]\n", fAddMuxes? "yes": "no" );
    Abc_Print( -2, "\t-L num : create MUX when sum of refs does not exceed this limit [default = %d]\n", Limit );
    Abc_Print( -2, "\t         (use L = 1 to create AIG with XORs but without MUXes)\n" );
    Abc_Print( -2, "\t-M num : create an AIG with additional primary inputs [default = %d]\n", Multi );
    Abc_Print( -2, "\t-r     : toggle rehashing AIG while preserving mapping [default = %s]\n", fRehashMap? "yes": "no" );
    Abc_Print( -2, "\t-u     : toggle unhashing AIG while preserving mapping [default = %s]\n", fUnhashMap? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle using MUX restructuring [default = %s]\n", fStrMuxes? "yes": "no" );
    Abc_Print( -2, "\t-i     : toggle complementing the POs of the AIG [default = %s]\n", fInvert? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Topand( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, fVerbose = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Topand(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Topand(): Can only be applied to a combinational miter.\n" );
        return 1;
    }
    pTemp = Gia_ManDupTopAnd( pAbc->pGia, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &topand [-vh]\n" );
    Abc_Print( -2, "\t        performs AND decomposition for combinational miter\n" );
    Abc_Print( -2, "\t-v    : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Add1Hot( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, fVerbose = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Add1Hot(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManDupOneHot( pAbc->pGia );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &add1hot [-vh]\n" );
    Abc_Print( -2, "\t        adds 1-hotness constraints as additional primary outputs\n" );
    Abc_Print( -2, "\t-v    : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Cof( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManComputeCofs( Gia_Man_t * p, int nVars );
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    int iVar = 0, Const = -1, nLimFan = 0, nVars = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "VCLNvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            iVar = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iVar < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            Const = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Const < 0 || Const > 1 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLimFan = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLimFan < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Cof(): There is no AIG.\n" );
        return 1;
    }
    if ( Const == 0 || Const == 1 )
    {
        Abc_Print( 0, "Computing cofactor of var %d with value %d.\n", iVar, Const );
        pTemp = Gia_ManDupCofactorVar( pAbc->pGia, iVar, Const );
        Abc_FrameUpdateGia( pAbc, pTemp );
    }
    else if ( nVars )
    {
        Abc_Print( 0, "Cofactoring the last %d inputs.\n", nVars );
        pTemp = Gia_ManComputeCofs( pAbc->pGia, nVars );
        Abc_FrameUpdateGia( pAbc, pTemp );
    }
    else if ( nLimFan )
    {
        Abc_Print( 0, "Cofactoring all variables whose fanout count is higher than %d.\n", nLimFan );
        pTemp = Gia_ManDupCofAll( pAbc->pGia, nLimFan, fVerbose );
        Abc_FrameUpdateGia( pAbc, pTemp );
    }
    else if ( iVar )
    {
        Abc_Print( 0, "Cofactoring one variable with object ID %d.\n", iVar );
        pTemp = Gia_ManDupCof( pAbc->pGia, iVar );
        Abc_FrameUpdateGia( pAbc, pTemp );
    }
    else
    {
        Abc_Print( -1, "One of the parameters, -V <num> or -L <num>, should be set on the command line.\n" );
        goto usage;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &cof [-VCLN num] [-vh]\n" );
    Abc_Print( -2, "\t         performs cofactoring w.r.t. variable(s)\n" );
    Abc_Print( -2, "\t-V num : the zero-based ID of one variable to cofactor [default = %d]\n", iVar );
    Abc_Print( -2, "\t-C num : cofactor one variable with a given constant (0 or 1) [default = unused]\n" );
    Abc_Print( -2, "\t-L num : cofactor vars with fanout count higher than this [default = %d]\n", nLimFan );
    Abc_Print( -2, "\t-N num : cofactoring the given number of last input variables [default = %d]\n", nVars );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Cofs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupCofs( Gia_Man_t * p, Vec_Int_t * vVarNums );
    extern Gia_Man_t * Gia_ManDupUnCofs( Gia_Man_t * p, Vec_Int_t * vVarNums );
    Gia_Man_t * pTemp;  Vec_Int_t * vVars = NULL;
    int c, iVar = 0, nVars = 0, fLastVars = 0, fVerbose = 0, fUndo = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "VNluvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            iVar = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iVar < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'l':
            fLastVars ^= 1;
            break;
        case 'u':
            fUndo ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Cof(): There is no AIG.\n" );
        return 1;
    }
    if ( iVar ) {
        Abc_Print( 0, "Cofactoring one variable with ID %d.\n", iVar );
        vVars = Vec_IntAlloc( 1 );
        Vec_IntPush( vVars, iVar );
    }
    else if ( nVars ) {
        Abc_Print( 0, "Cofactoring the %s %d inputs.\n", fLastVars ? "last":"first", nVars );
        if ( fLastVars) {
            vVars = Vec_IntAlloc(nVars);
            for ( int v = 0; v < nVars; v++ )
                Vec_IntPush( vVars, Gia_ManCiNum(pAbc->pGia)-nVars+v );
        }
        else
            vVars = Vec_IntStartNatural( nVars );
    }
    else if ( globalUtilOptind < argc ) {
        vVars = Vec_IntAlloc( argc );
        for ( c = globalUtilOptind; c < argc; c++ )
            Vec_IntPush( vVars, atoi(argv[c]) );
    }
    else {
        Abc_Print( -1, "One of the parameters, -V <num> or -L <num>, should be set on the command line.\n" );
        goto usage;
    }
    pTemp = fUndo ? Gia_ManDupUnCofs( pAbc->pGia, vVars ) : Gia_ManDupCofs( pAbc->pGia, vVars );
    Abc_FrameUpdateGia( pAbc, pTemp );
    Vec_IntFree( vVars );
    return 0;

usage:
    Abc_Print( -2, "usage: &cofs [-VN num] [-luvh]\n" );
    Abc_Print( -2, "\t         derives cofactors or reconstructs them w.r.t the set of variables\n" );
    Abc_Print( -2, "\t-V num : the zero-based ID of one variable to cofactor [default = %d]\n", iVar );
    Abc_Print( -2, "\t-N num : cofactoring the given number of first input variables [default = %d]\n", nVars );
    Abc_Print( -2, "\t-l     : toggle cofactoring last variables instead [default = %s]\n", fLastVars? "yes": "no" );
    Abc_Print( -2, "\t-u     : undo cofactoring (recombine cofactors using muxes) [default = %s]\n", fUndo? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Trim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp, * pTemp2;
    int c;
    int OutValue = -1;
    int fTrimCis = 1;
    int fTrimCos = 1;
    int fDualOut = 0;
    int fPoFedByPi = 0;
    int fPoFedByPo = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Viocpdh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            OutValue = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( OutValue < 0 )
                goto usage;
            break;
        case 'i':
            fTrimCis ^= 1;
            break;
        case 'o':
            fTrimCos ^= 1;
            break;
        case 'c':
            fPoFedByPi ^= 1;
            break;
        case 'p':
            fPoFedByPo ^= 1;
            break;
        case 'd':
            fDualOut ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Trim(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManDupTrimmed( pAbc->pGia, fTrimCis, fTrimCos, fDualOut, OutValue );
    if ( fPoFedByPi )
    {
        extern Gia_Man_t * Gia_ManDupTrimmed2( Gia_Man_t * p );
        pTemp = Gia_ManDupTrimmed2( pTemp2 = pTemp );
        Gia_ManStop( pTemp2 );
    }
    if ( fPoFedByPo )
    {
        extern Gia_Man_t * Gia_ManDupTrimmed3( Gia_Man_t * p );
        pTemp = Gia_ManDupTrimmed3( pTemp2 = pTemp );
        Gia_ManStop( pTemp2 );
    }
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &trim [-V num] [-iocpdh]\n" );
    Abc_Print( -2, "\t         removes PIs without fanout and PO driven by constants\n" );
    Abc_Print( -2, "\t-V num : the value (0 or 1) of POs to remove [default = both]\n" );
    Abc_Print( -2, "\t-i     : toggle removing PIs [default = %s]\n", fTrimCis? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle removing POs [default = %s]\n", fTrimCos? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle additionally removing POs fed by PIs [default = %s]\n", fPoFedByPi? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle additionally removing duplicated POs [default = %s]\n", fPoFedByPo? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle using dual-output miter [default = %s]\n", fDualOut? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Dfs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupChoices( Gia_Man_t * p );
    Gia_Man_t * pTemp;
    int c;
    int fNormal  = 0;
    int fChoices = 0;
    int fRevFans = 0;
    int fRevOuts = 0;
    int fLeveled = 0;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ncfolvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'n':
            fNormal ^= 1;
            break;
        case 'c':
            fChoices ^= 1;
            break;
        case 'f':
            fRevFans ^= 1;
            break;
        case 'o':
            fRevOuts ^= 1;
            break;
        case 'l':
            fLeveled ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Dfs(): There is no AIG.\n" );
        return 1;
    }
    if ( fChoices )
        pTemp = pAbc->pGia->pSibls ? Gia_ManDupChoices(pAbc->pGia) : Gia_ManDup(pAbc->pGia);
    else if ( fLeveled )
        pTemp = Gia_ManDupLevelized( pAbc->pGia );
    else if ( fNormal )
        pTemp = Gia_ManDupOrderAiger( pAbc->pGia );
    else 
        pTemp = Gia_ManDupOrderDfsReverse( pAbc->pGia, fRevFans, fRevOuts );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &dfs [-ncfolvh]\n" );
    Abc_Print( -2, "\t        orders objects in the DFS order\n" );
    Abc_Print( -2, "\t-n    : toggle using normalized ordering [default = %s]\n",            fNormal? "yes": "no" );
    Abc_Print( -2, "\t-c    : toggle using ordering for AIG with choices [default = %s]\n",  fChoices? "yes": "no" );
    Abc_Print( -2, "\t-f    : toggle using reverse fanin traversal order [default = %s]\n",  fRevFans? "yes": "no" );
    Abc_Print( -2, "\t-o    : toggle using reverse output traversal order [default = %s]\n", fRevOuts? "yes": "no" );
    Abc_Print( -2, "\t-l    : toggle using levelized order [default = %s]\n",                fLeveled? "yes": "no" );
    Abc_Print( -2, "\t-v    : toggle printing verbose information [default = %s]\n",         fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Sim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_ParSim_t Pars, * pPars = &Pars;
    char * pFileName = NULL;
    int c;
    Gia_ManSimSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FWNTImvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIters < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->RandSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->RandSeed < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            if ( pFileName == NULL )
                goto usage;
            break;
        case 'm':
            pPars->fCheckMiter ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Sim(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( pFileName != NULL )
    {
        extern void Gia_ManSimSimulatePattern( Gia_Man_t * p, char * pFileIn, char * pFileOut );
        char pFileNameOut[1000];
        char * pNameGeneric = Extra_FileNameGeneric(pFileName);
        assert( strlen(pNameGeneric) < 900 );
        sprintf( pFileNameOut, "%s_out.%s", pNameGeneric, Extra_FileNameExtension(pFileName) );
        ABC_FREE( pNameGeneric );
        Gia_ManSimSimulatePattern( pAbc->pGia, pFileName, pFileNameOut );
        return 1;
    }

    pAbc->nFrames = -1;
    if ( Gia_ManSimSimulate( pAbc->pGia, pPars ) )
        pAbc->Status =  0;
    else
        pAbc->Status = -1;
    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
//    if ( pLogFileName )
//        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "&sim" );
    return 0;

usage:
    Abc_Print( -2, "usage: &sim [-FWNT num] [-mvh] -I <file>\n" );
    Abc_Print( -2, "\t         performs random simulation of the sequential miter\n" );
    Abc_Print( -2, "\t         (if candidate equivalences are defined, performs refinement)\n" );
    Abc_Print( -2, "\t-F num : the number of frames to simulate [default = %d]\n", pPars->nIters );
    Abc_Print( -2, "\t-W num : the number of words to simulate [default = %d]\n", pPars->nWords );
    Abc_Print( -2, "\t-N num : random number seed (1 <= num <= 1000) [default = %d]\n", pPars->RandSeed );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-m     : toggle miter vs. any circuit [default = %s]\n", pPars->fCheckMiter? "miter": "circuit" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t-I file: (optional) file with input patterns (one line per frame, as many as PIs)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Sim2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Gia_ManSimTwo( Gia_Man_t * p0, Gia_Man_t * p1, int nWords, int nRounds, int TimeLimit, int fVerbose );
    Gia_Man_t * pGias[2]; FILE * pFile;
    char ** pArgvNew; int nArgcNew;
    int c, RetValue = 0, fVerbose = 0, nWords = 16, nRounds = 10, RandSeed = 1, TimeLimit = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WRNTvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRounds < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            RandSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( RandSeed < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeLimit < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew > 2 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Cec(): Wrong number of command-line arguments.\n" );
        return 1;
    }
    if ( nArgcNew == 2 )
    {
        char * pFileNames[2] = { pArgvNew[0], pArgvNew[1] }, * pTemp;
        int n; 
        for ( n = 0; n < 2; n++ )
        {
            // fix the wrong symbol
            for ( pTemp = pFileNames[n]; *pTemp; pTemp++ )
                if ( *pTemp == '>' )
                    *pTemp = '\\';
            if ( (pFile = fopen( pFileNames[n], "r" )) == NULL )
            {
                Abc_Print( -1, "Cannot open input file \"%s\". ", pFileNames[n] );
                if ( (pFileNames[n] = Extra_FileGetSimilarName( pFileNames[n], ".aig", NULL, NULL, NULL, NULL )) )
                    Abc_Print( 1, "Did you mean \"%s\"?", pFileNames[n] );
                Abc_Print( 1, "\n" );
                return 1;
            }
            fclose( pFile );
            pGias[n] = Gia_AigerRead( pFileNames[n], 0, 0, 0 );
            if ( pGias[n] == NULL )
            {
                Abc_Print( -1, "Reading AIGER from file \"%s\" has failed.\n", pFileNames[n] );
                return 0;
            }
        }
    }
    else
    {
        char * FileName, * pTemp;
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9Cec(): There is no current AIG.\n" );
            return 1;
        }
        pGias[0] = pAbc->pGia;
        if ( nArgcNew == 1 )
            FileName = pArgvNew[0];
        else
        {
            assert( nArgcNew == 0 );
            if ( pAbc->pGia->pSpec == NULL )
            {
                Abc_Print( -1, "File name is not given on the command line.\n" );
                return 1;
            }
            FileName = pAbc->pGia->pSpec;
        }
        // fix the wrong symbol
        for ( pTemp = FileName; *pTemp; pTemp++ )
            if ( *pTemp == '>' )
                *pTemp = '\\';
        if ( (pFile = fopen( FileName, "r" )) == NULL )
        {
            Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
            if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", NULL, NULL, NULL, NULL )) )
                Abc_Print( 1, "Did you mean \"%s\"?", FileName );
            Abc_Print( 1, "\n" );
            return 1;
        }
        fclose( pFile );
        pGias[1] = Gia_AigerRead( FileName, 0, 0, 0 );
        if ( pGias[1] == NULL )
        {
            Abc_Print( -1, "Reading AIGER has failed.\n" );
            return 0;
        }
    }
    if ( Gia_ManCiNum(pGias[0]) != Gia_ManCiNum(pGias[1]) )
    {
        Abc_Print( -1, "The number of CIs does not match.\n" );
        return 1;
    }
    if ( Gia_ManCoNum(pGias[0]) != Gia_ManCoNum(pGias[1]) )
    {
        Abc_Print( -1, "The number of COs does not match.\n" );
        return 1;
    }
    RetValue = Gia_ManSimTwo( pGias[0], pGias[1], nWords, nRounds, TimeLimit, fVerbose );
    if ( pGias[0] != pAbc->pGia )
        Gia_ManStopP( &pGias[0] );
    Gia_ManStopP( &pGias[1] );
    return 0;

usage:
    Abc_Print( -2, "usage: &sim2 [-WRNT num] [-vh] <file1.aig> <file2.aig>\n" );
    Abc_Print( -2, "\t         performs random of two circuits\n" );
    Abc_Print( -2, "\t-W num : the number of words to simulate [default = %d]\n", nWords );
    Abc_Print( -2, "\t-R num : the number of simulation rounds [default = %d]\n", nRounds );
    Abc_Print( -2, "\t-N num : random number seed (1 <= num <= 1000) [default = %d]\n", RandSeed );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n", TimeLimit );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Sim3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Ssw_RarSimulateGia( Gia_Man_t * p, Ssw_RarPars_t * pPars );
    Ssw_RarPars_t Pars, * pPars = &Pars;
    int c;
    Ssw_RarSetDefaultParams( pPars );
    // parse command line
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FWBRSNTGgvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFrames < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBinSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBinSize < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRounds < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRestart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRestart < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRandSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRandSeed < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeOut < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeOutGap = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeOutGap < 0 )
                goto usage;
            break;
        case 'g':
            pPars->fUseFfGrouping ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Sim3(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Sim3(): This command works only for sequential AIGs.\n" );
        return 0;
    }
    pAbc->Status = Ssw_RarSimulateGia( pAbc->pGia, pPars );
    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    return 0;

usage:
    Abc_Print( -2, "usage: &sim3 [-FWBRNT num] [-gvh]\n" );
    Abc_Print( -2, "\t         performs random simulation of the sequential miter\n" );
    Abc_Print( -2, "\t-F num : the number of frames to simulate [default = %d]\n",       pPars->nFrames );
    Abc_Print( -2, "\t-W num : the number of words to simulate [default = %d]\n",        pPars->nWords );
    Abc_Print( -2, "\t-B num : the number of flops in one bin [default = %d]\n",         pPars->nBinSize );
    Abc_Print( -2, "\t-R num : the number of simulation rounds [default = %d]\n",        pPars->nRounds );
    Abc_Print( -2, "\t-S num : the number of rounds before a restart [default = %d]\n",  pPars->nRestart );
    Abc_Print( -2, "\t-N num : random number seed (1 <= num <= 1000) [default = %d]\n",  pPars->nRandSeed );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n",   pPars->TimeOut );
    Abc_Print( -2, "\t-g     : toggle heuristic flop grouping [default = %s]\n",    pPars->fUseFfGrouping? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",    pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9MLGen( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManDumpFiles( Gia_Man_t * p, int nCexesT, int nCexesV, int Seed, char * pFileName );
    extern void Gia_ManDumpPlaFiles( Gia_Man_t * p, int nCexesT, int nCexesV, int Seed, char * pFileName );
    int c, Seed = 0, nWords = 10, fBinData = 0, fVerbose = 0;
    char * pFileName = NULL;
    char ** pArgvNew;
    int nArgcNew;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WSbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 'b':
            fBinData ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9MLGen(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9MLGen(): This command works only for combinational AIGs.\n" );
        return 0;
    }
    Vec_WrdFreeP( &pAbc->pGia->vSimsPi );
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew == 0 )
        printf( "Default file names will be used.\n" );
    else
        pFileName = pArgvNew[0];
    if ( nArgcNew != 0 && nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    if ( fBinData )
        Gia_ManDumpFiles( pAbc->pGia, nWords, nWords, Seed, pFileName );
    else
        Gia_ManDumpPlaFiles( pAbc->pGia, nWords, nWords, Seed, pFileName );
    return 0;

usage:
    Abc_Print( -2, "usage: &mlgen [-WS num] [-bvh] <file>\n" );
    Abc_Print( -2, "\t         generates data files for machine learning\n" );
    Abc_Print( -2, "\t-W num : the number of words to simulate [default = %d]\n", nWords );
    Abc_Print( -2, "\t-S num : the random seed for simulation data (num < 10000) [default = %d]\n", Seed );
    Abc_Print( -2, "\t-b     : toggle using binary data files [default = %s]\n", fBinData? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file to store the simulation info\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9MLTest( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManTestOneFile( Gia_Man_t * p, char * pFileName, char * pDumpFile );
    int c, fVerbose = 0;
    char * pDumpFile = NULL;
    char ** pArgvNew;
    int nArgcNew;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Dvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a file name.\n" );
                goto usage;
            }
            pDumpFile = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9MLTest(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9MLTest(): This command works only for combinational AIGs.\n" );
        return 0;
    }
    Vec_WrdFreeP( &pAbc->pGia->vSimsPi );
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9MLTest(): Expecting data file name on the command line.\n" );
        return 0;
    }
    Gia_ManTestOneFile( pAbc->pGia, pArgvNew[0], pDumpFile );
    return 0;

usage:
    Abc_Print( -2, "usage: &mltest [-vh] [-D file] <file>\n" );
    Abc_Print( -2, "\t          testing command for machine learning data\n" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t-D file : file name to dump statistics [default = none]\n" );
    Abc_Print( -2, "\tfile    : file with input simulation info\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Iwls21Test( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManTestWordFile( Gia_Man_t * p, char * pFileName, char * pDumpFile, int fVerbose );
    int c, fVerbose = 0;
    char * pDumpFile = NULL;
    char ** pArgvNew;
    int nArgcNew;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Dvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a file name.\n" );
                goto usage;
            }
            pDumpFile = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew == 2 )
    {
        Gia_Man_t * pAig = Gia_AigerRead( pArgvNew[0], 0, 0, 0 );
        if ( pAig == NULL )
        {
            Abc_Print( -1, "Reading AIGER from file \"%s\" has failed.\n", pArgvNew[0] );
            return 0;
        }
        if ( Gia_ManRegNum(pAig) > 0 )
        {
            Abc_Print( -1, "Abc_CommandAbc9Iwls21Test(): This command works only for combinational AIGs.\n" );
            return 0;
        }
        if ( Gia_ManCoNum(pAig) != 10 )
        {
            Abc_Print( -1, "Abc_CommandAbc9Iwls21Test(): Expecting an AIG with 10 outputs.\n" );
            return 0;
        }
        Gia_ManTestWordFile( pAig, pArgvNew[1], pDumpFile, fVerbose );
        Gia_ManStop( pAig );
        return 0;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iwls21Test(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManCoNum(pAbc->pGia) != 10 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iwls21Test(): Expecting an AIG with 10 outputs.\n" );
        return 0;
    }
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iwls21Test(): Expecting data file name on the command line.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iwls21Test(): This command works only for combinational AIGs.\n" );
        return 0;
    }
    Vec_WrdFreeP( &pAbc->pGia->vSimsPi );
    Gia_ManTestWordFile( pAbc->pGia, pArgvNew[0], pDumpFile, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &iwls21test [-vh] [-D file] <file1> <file2>\n" );
    Abc_Print( -2, "\t          this command evaluates AIG for 2021 IWLS ML+LS Contest\n" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t-D file : file name to dump statistics [default = none]\n" );
    Abc_Print( -2, "\tfile1   : file with input AIG (or \"&read <file1.aig>; &iwls21test <file2>\" can be used)\n");
    Abc_Print( -2, "\tfile2   : file with CIFAR10 image data (https://www.cs.toronto.edu/~kriz/cifar.html)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ReadSim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fOutputs = 0, nWords = 4, fTruth = 0, fReverse = 0, fVerbose = 0;
    char ** pArgvNew;
    int nArgcNew;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Wtrovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;
        case 't':
            fTruth ^= 1;
            break;
        case 'r':
            fReverse ^= 1;
            break;            
        case 'o':
            fOutputs ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReadSim(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReadSim(): This command works only for combinational AIGs.\n" );
        return 0;
    }
    if ( fTruth )
    {
        if ( Gia_ManCiNum(pAbc->pGia) > 20 )
        {
            Abc_Print( -1, "Abc_CommandAbc9ReadSim(): More than 20 inputs.\n" );
            return 1;
        }
        Vec_WrdFreeP( &pAbc->pGia->vSimsPi );
        pAbc->pGia->vSimsPi = fReverse ? Vec_WrdStartTruthTablesRev( Gia_ManCiNum(pAbc->pGia) ) : Vec_WrdStartTruthTables( Gia_ManCiNum(pAbc->pGia) );
        Vec_WrdFreeP( &pAbc->pGia->vSimsPo );
        pAbc->pGia->vSimsPo = Gia_ManSimPatSimOut( pAbc->pGia, pAbc->pGia->vSimsPi, 1 );
        return 0;
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    if ( fOutputs )
    {
        Vec_WrdFreeP( &pAbc->pGia->vSimsPo );
        pAbc->pGia->vSimsPo = Vec_WrdReadHex( pArgvNew[0], NULL, 1 );
        if ( Vec_WrdSize(pAbc->pGia->vSimsPo) % Gia_ManCoNum(pAbc->pGia) != 0 )
        {
            Vec_WrdFreeP( &pAbc->pGia->vSimsPo );
            Abc_Print( -1, "File size (%d words) does not match the number of AIG inputs (%d %% %d != %d).\n", 
                Vec_WrdSize(pAbc->pGia->vSimsPo), Vec_WrdSize(pAbc->pGia->vSimsPo), Gia_ManCiNum(pAbc->pGia), 
                Vec_WrdSize(pAbc->pGia->vSimsPo) % Gia_ManCiNum(pAbc->pGia) );
            return 1;
        }
        pAbc->pGia->nSimWords = Vec_WrdSize(pAbc->pGia->vSimsPo) / Gia_ManCoNum(pAbc->pGia);
    }
    else
    {
        Vec_WrdFreeP( &pAbc->pGia->vSimsPi );
        pAbc->pGia->vSimsPi = Vec_WrdReadHex( pArgvNew[0], NULL, 1 );
        if ( Vec_WrdSize(pAbc->pGia->vSimsPi) % Gia_ManCiNum(pAbc->pGia) != 0 )
        {
            Vec_WrdFreeP( &pAbc->pGia->vSimsPi );
            Abc_Print( -1, "File size (%d words) does not match the number of AIG inputs (%d %% %d != %d).\n", 
                Vec_WrdSize(pAbc->pGia->vSimsPi), Vec_WrdSize(pAbc->pGia->vSimsPi), Gia_ManCiNum(pAbc->pGia), 
                Vec_WrdSize(pAbc->pGia->vSimsPi) % Gia_ManCiNum(pAbc->pGia) );
            return 1;
        }
        pAbc->pGia->nSimWords = Vec_WrdSize(pAbc->pGia->vSimsPi) / Gia_ManCiNum(pAbc->pGia);
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &sim_read [-W num] [-trovh] <file>\n" );
    Abc_Print( -2, "\t         reads simulation patterns from file\n" );
    Abc_Print( -2, "\t-W num : the number of words to simulate [default = %d]\n", nWords );
    Abc_Print( -2, "\t-t     : toggle creating exhaustive simulation info [default = %s]\n", fTruth? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle reversing MSB and LSB input variables [default = %s]\n", fReverse? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle reading output information [default = %s]\n", fOutputs? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file to store the simulation info\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9WriteSim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fOutputs = 0, fTrans = 0, fBool = 0, fVerbose = 0;
    char ** pArgvNew;
    int nArgcNew;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "otbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'o':
            fOutputs ^= 1;
            break;
        case 't':
            fTrans ^= 1;
            break;
        case 'b':
            fBool ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9WriteSim(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9WriteSim(): This command works only for combinational AIGs.\n" );
        return 0;
    }
    if ( (fOutputs ? pAbc->pGia->vSimsPo : pAbc->pGia->vSimsPi) == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9WriteSim(): Does not have simulation information available.\n" );
        return 0;
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    if ( fOutputs )
    {
        Vec_Wrd_t * vTemp;
        int nWords = Vec_WrdSize(pAbc->pGia->vSimsPo) / Gia_ManCoNum(pAbc->pGia);
        assert( Vec_WrdSize(pAbc->pGia->vSimsPo) % Gia_ManCoNum(pAbc->pGia) == 0 );
        if ( fTrans )
        {
            int nSize = Vec_WrdSize(pAbc->pGia->vSimsPo);
            Vec_WrdFillExtra( pAbc->pGia->vSimsPo, nWords * 64 * ((Gia_ManCoNum(pAbc->pGia) + 63)/64), 0 );
            vTemp = Vec_WrdStart( Vec_WrdSize(pAbc->pGia->vSimsPo) );
            Extra_BitMatrixTransposeP( pAbc->pGia->vSimsPo, nWords, vTemp, (Gia_ManCoNum(pAbc->pGia) + 63)/64 );
            if ( fBool )
                Vec_WrdDumpBool( pArgvNew[0], vTemp, (Gia_ManCoNum(pAbc->pGia) + 63)/64, Gia_ManCoNum(pAbc->pGia), 1, 1 );
            else
                Vec_WrdDumpHex( pArgvNew[0], vTemp, (Gia_ManCoNum(pAbc->pGia) + 63)/64, 1 );
            Vec_WrdShrink( pAbc->pGia->vSimsPo, nSize );
            Vec_WrdFree( vTemp );
        }
        else
        {
            if ( fBool )
                Vec_WrdDumpBool( pArgvNew[0], pAbc->pGia->vSimsPo, nWords, Gia_ManCoNum(pAbc->pGia), 1, 1 );
            else
                Vec_WrdDumpHex( pArgvNew[0], pAbc->pGia->vSimsPo, nWords, 1 );
        }
    }
    else
    {
        Vec_Wrd_t * vTemp;
        int nWords = Vec_WrdSize(pAbc->pGia->vSimsPi) / Gia_ManCiNum(pAbc->pGia);
        assert( Vec_WrdSize(pAbc->pGia->vSimsPi) % Gia_ManCiNum(pAbc->pGia) == 0 );
        if ( fTrans )
        {
            int nSize = Vec_WrdSize(pAbc->pGia->vSimsPi);
            Vec_WrdFillExtra( pAbc->pGia->vSimsPi, nWords * 64 * ((Gia_ManCiNum(pAbc->pGia) + 63)/64), 0 );
            vTemp = Vec_WrdStart( Vec_WrdSize(pAbc->pGia->vSimsPi) );
            Extra_BitMatrixTransposeP( pAbc->pGia->vSimsPi, nWords, vTemp, (Gia_ManCiNum(pAbc->pGia) + 63)/64 );
            if ( fBool )
                Vec_WrdDumpBool( pArgvNew[0], vTemp, (Gia_ManCiNum(pAbc->pGia) + 63)/64, Gia_ManCiNum(pAbc->pGia), 1, 1 );
            else
                Vec_WrdDumpHex( pArgvNew[0], vTemp, (Gia_ManCiNum(pAbc->pGia) + 63)/64, 1 );
            Vec_WrdShrink( pAbc->pGia->vSimsPi, nSize );
            Vec_WrdFree( vTemp );
        }
        else
        {
            if ( fBool )
                Vec_WrdDumpBool( pArgvNew[0], pAbc->pGia->vSimsPi, nWords, Gia_ManCiNum(pAbc->pGia), 1, 1 );
            else
                Vec_WrdDumpHex( pArgvNew[0], pAbc->pGia->vSimsPi, nWords, 1 );
        }
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &sim_write [-otbvh] <file>\n" );
    Abc_Print( -2, "\t         writes simulation patterns into a file\n" );
    Abc_Print( -2, "\t-o     : toggle writing output information [default = %s]\n", fOutputs? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle transposing the simulation information [default = %s]\n", fTrans? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle dumping in boolean vs hexadecimal notation [default = %s]\n", fBool? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file to store the simulation info\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9PrintSim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManSimProfile( Gia_Man_t * pGia );
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9PrintSim(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9PrintSim(): This command works only for combinational AIGs.\n" );
        return 0;
    }
    if ( pAbc->pGia->vSimsPi == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9PrintSim(): Simulation patterns are not defined.\n" );
        return 0;
    }
    Gia_ManSimProfile( pAbc->pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &sim_print [-vh]\n" );
    Abc_Print( -2, "\t         writes simulation patterns into a file\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenSim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManSimProfile( Gia_Man_t * pGia );
    extern void Gia_ManPatSatImprove( Gia_Man_t * pGia, int nWords, int fVerbose );
    extern void Gia_ManPatDistImprove( Gia_Man_t * p, int fVerbose );
    extern void Gia_ManPatRareImprove( Gia_Man_t * p, int RareLimit, int fVerbose );
    int c, nWords = 4, nRare = -1, fDist = 0, fSatBased = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WRsdvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRare = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRare < 0 )
                goto usage;
            break;
        case 's':
            fSatBased ^= 1;
            break;
        case 'd':
            fDist ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenSim(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenSim(): This command works only for combinational AIGs.\n" );
        return 0;
    }
    if ( fSatBased )
    {
        if ( pAbc->pGia->vSimsPi == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9GenSim(): Does not have simulation information available.\n" );
            return 0;
        }
        Gia_ManPatSatImprove( pAbc->pGia, nWords, fVerbose );
    }
    else if ( fDist )
    {
        if ( pAbc->pGia->vSimsPi == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9GenSim(): Does not have simulation information available.\n" );
            return 0;
        }
        Gia_ManPatDistImprove( pAbc->pGia, fVerbose );
    }
    else if ( nRare >= 0 )
    {
        if ( pAbc->pGia->vSimsPi == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9GenSim(): Does not have simulation information available.\n" );
            return 0;
        }
        Gia_ManPatRareImprove( pAbc->pGia, nRare, fVerbose );
    }
    else
    {
        Abc_Random(1);
        Vec_WrdFreeP( &pAbc->pGia->vSimsPi );
        pAbc->pGia->vSimsPi = Vec_WrdStartRandom( Gia_ManCiNum(pAbc->pGia) * nWords );
        printf( "Generated %d random patterns (%d 64-bit data words) for each input of the AIG.\n", 64*nWords, nWords );
    }
    Gia_ManSimProfile( pAbc->pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &sim_gen [-WR num] [-sdvh]\n" );
    Abc_Print( -2, "\t         generates random simulation patterns\n" );
    Abc_Print( -2, "\t-W num : the number of 64-bit words of simulation info [default = %d]\n",            nWords );
    Abc_Print( -2, "\t-R num : the rarity parameter used to define scope [default = %d]\n",                nRare );
    Abc_Print( -2, "\t-s     : toggle using SAT-based improvement of available patterns [default = %s]\n", fSatBased? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle using one improvement of available patterns [default = %s]\n",       fDist? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",                      fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SimRsb( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Gia_ManSimRsb( Gia_Man_t * p, int nCands, int fVerbose );
    int c, nCands = 32, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nCands = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCands < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SimRsb(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9SimRsb(): This command works only for combinational AIGs.\n" );
        return 0;
    }
    if ( pAbc->pGia->vSimsPi == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SimRsb(): Does not have simulation information available.\n" );
        return 0;
    }
    Gia_ManSimRsb( pAbc->pGia, nCands, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &simrsb [-N num] [-vh]\n" );
    Abc_Print( -2, "\t         performs resubstitution\n" );
    Abc_Print( -2, "\t-C num : the number of candidates to try [default = %d]\n", nCands );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Resim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Cec_ParSim_t Pars, * pPars = &Pars;
    int c, RetValue;
    Cec_ManSimSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFrames < 0 )
                goto usage;
            break;
        case 'm':
            pPars->fCheckMiter ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Resim(): There is no AIG.\n" );
        return 1;
    }
    RetValue = Cec_ManSeqResimulateCounter( pAbc->pGia, pPars, pAbc->pCex );
    pAbc->Status  = RetValue ? 0 : -1;
    pAbc->nFrames = pAbc->pCex->iFrame;
//    Abc_FrameReplaceCex( pAbc, &pAbc->pCex );
    return 0;

usage:
    Abc_Print( -2, "usage: &resim [-F num] [-mvh]\n" );
    Abc_Print( -2, "\t         resimulates equivalence classes using counter-example\n" );
    Abc_Print( -2, "\t-F num : the number of additinal frames to simulate [default = %d]\n", pPars->nFrames );
    Abc_Print( -2, "\t-m     : toggle miter vs. any circuit [default = %s]\n", pPars->fCheckMiter? "miter": "circuit" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SpecI( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Gia_CommandSpecI( Gia_Man_t * pGia, int nFrames, int nBTLimit, int fUseStart, int fCheckMiter, int fVerbose );
    int nFrames     =   100;
    int nBTLimit    = 25000;
    int fUseStart   =     1;
    int fCheckMiter =     1;
    int fVerbose    =     0;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FCfmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimit < 0 )
                goto usage;
            break;
        case 'f':
            fUseStart ^= 1;
            break;
        case 'm':
            fCheckMiter ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SpecI(): There is no AIG.\n" );
        return 1;
    }
    Gia_CommandSpecI( pAbc->pGia, nFrames, nBTLimit, fUseStart, fCheckMiter, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &speci [-FC num] [-fmvh]\n" );
    Abc_Print( -2, "\t         refines equivalence classes using speculative reduction\n" );
    Abc_Print( -2, "\t-F num : the max number of time frames [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-f     : toggle starting BMC from a later frame [default = %s]\n", fUseStart? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle miter vs. any circuit [default = %s]\n", fCheckMiter? "miter": "circuit" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}



/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Equiv( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Cec_ParSim_t Pars, * pPars = &Pars;
    int c;
    Cec_ManSimSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WFRSTsmdvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFrames < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRounds < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nNonRefines = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNonRefines < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 's':
            pPars->fSeqSimulate ^= 1;
            break;
        case 'm':
            pPars->fCheckMiter ^= 1;
            break;
        case 'd':
            pPars->fDualOut ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Equiv(): There is no AIG.\n" );
        return 1;
    }
    Cec_ManSimulation( pAbc->pGia, pPars );
    return 0;

usage:
    Abc_Print( -2, "usage: &equiv [-WFRST num] [-smdvh]\n" );
    Abc_Print( -2, "\t         computes candidate equivalence classes\n" );
    Abc_Print( -2, "\t-W num : the number of words to simulate [default = %d]\n", pPars->nWords );
    Abc_Print( -2, "\t-F num : the number of frames to simulate [default = %d]\n", pPars->nFrames );
    Abc_Print( -2, "\t-R num : the max number of simulation rounds [default = %d]\n", pPars->nRounds );
    Abc_Print( -2, "\t-S num : the max number of rounds w/o refinement to stop [default = %d]\n", pPars->nNonRefines );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-s     : toggle seq vs. comb simulation [default = %s]\n", pPars->fSeqSimulate? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle miter vs. any circuit [default = %s]\n", pPars->fCheckMiter? "miter": "circuit" );
    Abc_Print( -2, "\t-d     : toggle using two POs instead of XOR [default = %s]\n", pPars->fDualOut? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Equiv2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Ssw_SignalFilterGia( Gia_Man_t * p, int nFramesMax, int nConfMax, int nRounds, int TimeLimit, int TimeLimit2, Abc_Cex_t * pCex, int fLatchOnly, int fVerbose );
    int nFramesMax =   20;
    int nConfMax   =  500;
    int nRounds    =   10;
    int TimeLimit  =    0;
    int TimeLimit2 =    0;
    int fUseCex    =    0;
    int fLatchOnly =    0;
    int fVerbose   =    0;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FCRTSxlvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFramesMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfMax < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRounds < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeLimit < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            TimeLimit2 = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeLimit2 < 0 )
                goto usage;
            break;
        case 'x':
            fUseCex ^= 1;
            break;
        case 'l':
            fLatchOnly ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Equiv2(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( 0, "Abc_CommandAbc9Equiv2(): There is no flops. Nothing is done.\n" );
        return 0;
    }
    if ( fUseCex )
    {
        if ( pAbc->pCex == NULL )
        {
            Abc_Print( 0, "Abc_CommandAbc9Equiv2(): Counter-example is not available.\n" );
            return 0;
        }
        if ( pAbc->pCex->nPis != Gia_ManPiNum(pAbc->pGia) )
        {
            Abc_Print( -1, "Abc_CommandAbc9Equiv2(): The number of PIs differs in cex (%d) and in AIG (%d).\n",
                pAbc->pCex->nPis, Gia_ManPiNum(pAbc->pGia) );
            return 1;
        }
    }
    Ssw_SignalFilterGia( pAbc->pGia, nFramesMax, nConfMax, nRounds, TimeLimit, TimeLimit2, fUseCex? pAbc->pCex: NULL, fLatchOnly, fVerbose );
    pAbc->Status  = -1;
//    pAbc->nFrames = pAbc->pCex->iFrame;
//    Abc_FrameReplaceCex( pAbc, &pAbc->pCex );
    return 0;

usage:
    Abc_Print( -2, "usage: &equiv2 [-FCRTS num] [-xlvh]\n" );
    Abc_Print( -2, "\t         computes candidate equivalence classes\n" );
    Abc_Print( -2, "\t-F num : the max number of frames for BMC [default = %d]\n", nFramesMax );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", nConfMax );
    Abc_Print( -2, "\t-R num : the max number of BMC rounds [default = %d]\n", nRounds );
    Abc_Print( -2, "\t-T num : runtime limit in seconds for all rounds [default = %d]\n", TimeLimit );
    Abc_Print( -2, "\t-S num : runtime limit in seconds for one round [default = %d]\n", TimeLimit2 );
    Abc_Print( -2, "\t-x     : toggle using the current cex to perform refinement [default = %s]\n", fUseCex? "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle considering only latch output equivalences [default = %s]\n", fLatchOnly? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Equiv3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Ssw_RarSignalFilterGia( Gia_Man_t * p, Ssw_RarPars_t * pPars );
    Ssw_RarPars_t Pars, * pPars = &Pars;
    int c;
    Ssw_RarSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FWBRSNTmxlvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFrames < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBinSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBinSize < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRounds < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRestart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRestart < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRandSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRandSeed < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeOut < 0 )
                goto usage;
            break;
        case 'm':
            pPars->fMiter ^= 1;
            break;
        case 'x':
            pPars->fUseCex ^= 1;
            break;
        case 'l':
            pPars->fLatchOnly ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Equiv3(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( 0, "Abc_CommandAbc9Equiv3(): There is no flops. Nothing is done.\n" );
        return 0;
    }
    if ( pPars->fUseCex )
    {
        if ( pPars->fMiter )
        {
            Abc_Print( 0, "Abc_CommandAbc9Equiv3(): Considering the miter as a circuit because the CEX is given.\n" );
            pPars->fMiter = 0;
        }
        if ( pAbc->pCex == NULL )
        {
            Abc_Print( 0, "Abc_CommandAbc9Equiv3(): Counter-example is not available.\n" );
            return 0;
        }
        if ( pAbc->pCex->nPis != Gia_ManPiNum(pAbc->pGia) )
        {
            Abc_Print( -1, "Abc_CommandAbc9Equiv3(): The number of PIs differs in cex (%d) and in AIG (%d).\n",
                pAbc->pCex->nPis, Gia_ManPiNum(pAbc->pGia) );
            return 1;
        }
        pPars->pCex = pAbc->pCex;
    }
    pAbc->Status = Ssw_RarSignalFilterGia( pAbc->pGia, pPars );
//    pAbc->nFrames = pAbc->pGia->pCexSeq->iFrame;
    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    return 0;

usage:
    Abc_Print( -2, "usage: &equiv3 [-FWRSNT num] [-mxlvh]\n" );
    Abc_Print( -2, "\t         computes candidate equivalence classes\n" );
    Abc_Print( -2, "\t-F num : the max number of frames for BMC [default = %d]\n",                   pPars->nFrames );
    Abc_Print( -2, "\t-W num : the number of words to simulate [default = %d]\n",                    pPars->nWords );
    Abc_Print( -2, "\t-R num : the max number of simulation rounds [default = %d]\n",                pPars->nRounds );
    Abc_Print( -2, "\t-S num : the number of rounds before a restart [default = %d]\n",              pPars->nRestart );
    Abc_Print( -2, "\t-N num : random number seed (1 <= num <= 1000) [default = %d]\n",              pPars->nRandSeed );
    Abc_Print( -2, "\t-T num : runtime limit in seconds for all rounds [default = %d]\n",            pPars->TimeOut );
    Abc_Print( -2, "\t-m     : toggle miter vs. any circuit [default = %s]\n",                       pPars->fMiter? "miter": "circuit" );
    Abc_Print( -2, "\t-x     : toggle using the current CEX to perform refinement [default = %s]\n", pPars->fUseCex? "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle considering only latch output equivalences [default = %s]\n",  pPars->fLatchOnly? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",                pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Semi( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Cec_ParSmf_t Pars, * pPars = &Pars;
    int c;
    Cec_ManSmfSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WRFSMCTmdvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRounds < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFrames < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nNonRefines = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNonRefines < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMinOutputs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMinOutputs < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 'm':
            pPars->fCheckMiter ^= 1;
            break;
        case 'd':
            pPars->fDualOut ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Resim(): There is no AIG.\n" );
        return 1;
    }
    Cec_ManSeqSemiformal( pAbc->pGia, pPars );
    return 0;

usage:
    Abc_Print( -2, "usage: &semi [-WRFSMCT num] [-mdvh]\n" );
    Abc_Print( -2, "\t         performs semiformal refinement of equivalence classes\n" );
    Abc_Print( -2, "\t-W num : the number of words to simulate [default = %d]\n", pPars->nWords );
    Abc_Print( -2, "\t-R num : the max number of rounds to simulate [default = %d]\n", pPars->nRounds );
    Abc_Print( -2, "\t-F num : the max number of frames to unroll [default = %d]\n", pPars->nFrames );
    Abc_Print( -2, "\t-S num : the max number of rounds w/o refinement to stop [default = %d]\n", pPars->nNonRefines );
    Abc_Print( -2, "\t-M num : the min number of outputs of bounded SRM [default = %d]\n", pPars->nMinOutputs );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-m     : toggle miter vs. any circuit [default = %s]\n", pPars->fCheckMiter? "miter": "circuit" );
    Abc_Print( -2, "\t-d     : toggle using two POs instead of XOR [default = %s]\n", pPars->fDualOut? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Times( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, nTimes = 2, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimes < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Times(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManDupTimes( pAbc->pGia, nTimes );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &times [-N <num>] [-vh]\n" );
    Abc_Print( -2, "\t         creates several \"parallel\" copies of the design\n" );
    Abc_Print( -2, "\t-N num : number of copies to create [default = %d]\n", nTimes );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Frames( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManFrames2( Gia_Man_t * pAig, Gia_ParFra_t * pPars );

    Gia_Man_t * pTemp;
    Gia_ParFra_t Pars, * pPars = &Pars;
    int c;
    int nCofFanLit = 0;
    int fNewAlgo = 0;
    int fInitSpecial = 0;
    Gia_ManFraSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FLsoibavh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFrames < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nCofFanLit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCofFanLit < 0 )
                goto usage;
            break;
        case 's':
            pPars->fDisableSt ^= 1;
            break;
        case 'o':
            pPars->fOrPos ^= 1;
            break;
        case 'i':
            pPars->fInit ^= 1;
            break;
        case 'b':
            fInitSpecial ^= 1;
            break;
        case 'a':
            fNewAlgo ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Frames(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( fInitSpecial )
        pTemp = Gia_ManFramesInitSpecial( pAbc->pGia, pPars->nFrames, pPars->fVerbose );
    else if ( nCofFanLit )
        pTemp = Gia_ManUnrollAndCofactor( pAbc->pGia, pPars->nFrames, nCofFanLit, pPars->fVerbose );
    else if ( fNewAlgo )
        pTemp = Gia_ManFrames2( pAbc->pGia, pPars );
    else
        pTemp = Gia_ManFrames( pAbc->pGia, pPars );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &frames [-FL <num>] [-soibavh]\n" );
    Abc_Print( -2, "\t         unrolls the design for several timeframes\n" );
    Abc_Print( -2, "\t-F num : the number of frames to unroll [default = %d]\n", pPars->nFrames );
    Abc_Print( -2, "\t-L num : the limit on fanout count of resets/enables to cofactor [default = %d]\n", nCofFanLit );
    Abc_Print( -2, "\t-s     : toggle disabling structural hashing [default = %s]\n", pPars->fDisableSt? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle ORing corresponding POs [default = %s]\n", pPars->fOrPos? "yes": "no" );
    Abc_Print( -2, "\t-i     : toggle initializing registers [default = %s]\n", pPars->fInit? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle computing special AIG for BMC [default = %s]\n", fInitSpecial? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle using new algorithm [default = %s]\n", fNewAlgo? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Retime( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c;
    int nMaxIters = 100;
    int fVerbose  =   0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nMaxIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMaxIters < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Retime(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    pTemp = Gia_ManRetimeForward( pAbc->pGia, nMaxIters, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &retime [-N <num>] [-vh]\n" );
    Abc_Print( -2, "\t         performs most-forward retiming\n" );
    Abc_Print( -2, "\t-N num : the number of incremental iterations [default = %d]\n", nMaxIters );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Enable( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c;
    int fRemove  = 0;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "rvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'r':
            fRemove ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Enable(): There is no AIG.\n" );
        return 1;
    }
    if ( fRemove )
        pTemp = Gia_ManRemoveEnables( pAbc->pGia );
    else
        pTemp = Gia_ManDupSelf( pAbc->pGia );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &enable [-rvh]\n" );
    Abc_Print( -2, "\t         adds or removes flop enable signals\n" );
    Abc_Print( -2, "\t-r     : toggle adding vs. removing enables [default = %s]\n", fRemove? "remove": "add" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Resyn3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManResyn3( Gia_Man_t * pGia, int fVerbose );
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Resyn3(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManResyn3( pAbc->pGia, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &resyn3 [-vh]\n" );
    Abc_Print( -2, "\t         performs rewriting of the AIG while preserving logic level\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Resyn3rs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManCompress3rs( Gia_Man_t * pGia, int fUpdateLevel, int fVerbose );
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Resyn3rs(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManCompress3rs( pAbc->pGia, 1, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &resyn3rs [-vh]\n" );
    Abc_Print( -2, "\t         performs rewriting of the AIG while preserving logic level\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Compress3rs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManCompress3rs( Gia_Man_t * pGia, int fUpdateLevel, int fVerbose );
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Compress3rs(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManCompress3rs( pAbc->pGia, 0, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &compress3rs [-vh]\n" );
    Abc_Print( -2, "\t         performs rewriting of the AIG without preserving logic level\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Dc2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    int fUpdateLevel = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Dc2(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManCompress2( pAbc->pGia, fUpdateLevel, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &dc2 [-lvh]\n" );
    Abc_Print( -2, "\t         performs heavy rewriting of the AIG\n" );
    Abc_Print( -2, "\t-l     : toggle level update during rewriting [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Dsd( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManCollapseTest( Gia_Man_t * p, int fVerbose );
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    int fUpdateLevel = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Dsd(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManCollapseTest( pAbc->pGia, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &dsd [-vh]\n" );
    Abc_Print( -2, "\t         performs DSD-based collapsing\n" );
//    Abc_Print( -2, "\t-l     : toggle level update during rewriting [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Bidec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    int fUpdateLevel = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "lvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'l':
            fUpdateLevel ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bidec(): There is no AIG.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bidec(): Mapping of the AIG is not defined.\n" );
        return 1;
    }
    pTemp = Gia_ManPerformBidec( pAbc->pGia, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &bidec [-vh]\n" );
    Abc_Print( -2, "\t         performs heavy rewriting of the AIG\n" );
//    Abc_Print( -2, "\t-l     : toggle level update during rewriting [default = %s]\n", fUpdateLevel? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Shrink( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp = NULL;
    int nLutSize;
    int c,fVerbose = 0;
    int fKeepLevel = 0;
    int nFanoutMax = 50;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nlvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a char string.\n" );
                goto usage;
            }
            nFanoutMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFanoutMax < 0 )
                goto usage;
            break;
        case 'l':
            fKeepLevel ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Shrink(): There is no AIG.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Shrink(): Mapping of the AIG is not defined.\n" );
        return 1;
    }
    nLutSize = Gia_ManLutSizeMax( pAbc->pGia );
    if ( nLutSize <= 4 )
        pTemp = Gia_ManMapShrink4( pAbc->pGia, fKeepLevel, fVerbose );
    else if ( nLutSize <= 6 )
        pTemp = Gia_ManMapShrink6( pAbc->pGia, nFanoutMax, fKeepLevel, fVerbose );
    else
        Abc_Print( -1, "Abc_CommandAbc9Shrink(): Works only for 4-LUTs and 6-LUTs.\n" );
    if ( pTemp )
        Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &shrink [-N num] [-lvh]\n" );
    Abc_Print( -2, "\t         performs fast shrinking using current mapping\n" );
    Abc_Print( -2, "\t-N num : the max fanout count to skip a divisor [default = %d]\n", nFanoutMax );
    Abc_Print( -2, "\t-l     : toggle level update during shrinking [default = %s]\n", fKeepLevel? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Fx( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int nNewNodesMax = 1000000;
    int LitCountMax  =       0;
    int fReverse     =       0;
    int c, fVerbose  =       0;
    int fVeryVerbose =       0;
    // set the defaults
    Extra_UtilGetoptReset();
    while ( (c = Extra_UtilGetopt(argc, argv, "NMrvwh")) != EOF )
    {
        switch (c)
        {
            case 'N':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                    goto usage;
                }
                nNewNodesMax = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( nNewNodesMax < 0 )
                    goto usage;
                break;
            case 'M':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                    goto usage;
                }
                LitCountMax = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( LitCountMax < 0 )
                    goto usage;
                break;
            case 'r':
                fReverse ^= 1;
                break;
            case 'v':
                fVerbose ^= 1;
                break;
            case 'w':
                fVeryVerbose ^= 1;
                break;
            case 'h':
                goto usage;
                break;
            default:
                goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Shrink(): There is no AIG.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Shrink(): Mapping of the AIG is not defined.\n" );
        return 1;
    }
    pTemp = Gia_ManPerformFx( pAbc->pGia, nNewNodesMax, LitCountMax, fReverse, fVerbose, fVeryVerbose );
    if ( pTemp != NULL )
        Abc_FrameUpdateGia( pAbc, pTemp );
    else
        Abc_Print( -1, "Abc_CommandAbc9Fx(): Command has failed.\n" );
    return 0;

usage:
    Abc_Print( -2, "usage: &fx [-NM <num>] [-vh]\n");
    Abc_Print( -2, "\t           extract shared logic using the classical \"fast_extract\" algorithm\n");
    Abc_Print( -2, "\t-N <num> : max number of divisors to extract during this run [default = %d]\n", nNewNodesMax );
    Abc_Print( -2, "\t-M <num> : upper bound on literal count of divisors to extract [default = %d]\n", LitCountMax );
    Abc_Print( -2, "\t-r       : reversing variable order during ISOP computation [default = %s]\n", fReverse? "yes": "no" );
    Abc_Print( -2, "\t-v       : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Extract( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Abc_NtkShareXorGia( Gia_Man_t * p, int nMultiSize, int fAnd, int fVerbose );
    Gia_Man_t * pTemp;
    int nMultiSize = 3;
    int c, fAnds = 0;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( (c = Extra_UtilGetopt(argc, argv, "Kavh")) != EOF )
    {
        switch (c)
        {
            case 'K':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                    goto usage;
                }
                nMultiSize = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( nMultiSize < 0 )
                    goto usage;
                break;
            case 'a':
                fAnds ^= 1;
                break;
            case 'v':
                fVerbose ^= 1;
                break;
            case 'h':
                goto usage;
                break;
            default:
                goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Shrink(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Abc_NtkShareXorGia( pAbc->pGia, nMultiSize, fAnds, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &extract [-K <num>] [-vh]\n");
    Abc_Print( -2, "\t           extract shared logic for XOR-rich circuits\n");
    Abc_Print( -2, "\t-K <num> : the minimum gate size to consider for extraction [default = %d]\n", nMultiSize );
    Abc_Print( -2, "\t-a       : toogle extracting ANDs instead of XORs [default = %s]\n", fAnds? "yes": "no" );
    Abc_Print( -2, "\t-v       : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Balance( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp = NULL;
    int nNewNodesMax = ABC_INFINITY;
    int fDelayOnly   = 0;
    int fSimpleAnd   = 0;
    int fStrict      = 0;
    int fKeepLevel   = 0;
    int c, fVerbose  = 0;
    int fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ndaslvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a char string.\n" );
                goto usage;
            }
            nNewNodesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNewNodesMax < 0 )
                goto usage;
            break;
        case 'd':
            fDelayOnly ^= 1;
            break;
        case 'a':
            fSimpleAnd ^= 1;
            break;
        case 's':
            fStrict ^= 1;
            break;
        case 'l':
            fKeepLevel ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Balance(): There is no AIG.\n" );
        return 1;
    }
    if ( fDelayOnly )
        pTemp = Gia_ManBalance( pAbc->pGia, fSimpleAnd, fStrict, fVerbose );
    else
        pTemp = Gia_ManAreaBalance( pAbc->pGia, fSimpleAnd, nNewNodesMax, fVerbose, fVeryVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &b [-N num] [-dasvwh]\n" );
    Abc_Print( -2, "\t         performs AIG balancing to reduce delay and area\n" );
    Abc_Print( -2, "\t-N num : the max fanout count to skip a divisor [default = %d]\n", nNewNodesMax );
    Abc_Print( -2, "\t-d     : toggle delay only balancing [default = %s]\n", fDelayOnly? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle using AND instead of AND/XOR/MUX [default = %s]\n", fSimpleAnd? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle strict control of area in delay-mode (\"&b -d\") [default = %s]\n", fStrict? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9BalanceLut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManBalanceLut( Gia_Man_t * p, int nLutSize, int nCutNum, int fVerbose );
    extern Gia_Man_t * Gia_ManLutBalance( Gia_Man_t * p, int nLutSize, int fUseMuxes, int fRecursive, int fOptArea, int fVerbose );
    Gia_Man_t * pTemp = NULL;
    int fUseOld      = 0;
    int nLutSize     = 6;
    int nCutNum      = 8;
    int fUseMuxes    = 1;
    int fRecursive   = 1;
    int fOptArea     = 1;
    int c, fVerbose  = 0;
    int fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCnmravwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a char string.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a char string.\n" );
                goto usage;
            }
            nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutNum < 0 )
                goto usage;
            break;
        case 'n':
            fUseOld ^= 1;
            break;
        case 'm':
            fUseMuxes ^= 1;
            break;
        case 'r':
            fRecursive ^= 1;
            break;
        case 'a':
            fOptArea ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9BalanceLut(): There is no AIG.\n" );
        return 1;
    }
    if ( fUseOld )
        pTemp = Gia_ManBalanceLut( pAbc->pGia, nLutSize, nCutNum, fVerbose );
    else
        pTemp = Gia_ManLutBalance( pAbc->pGia, nLutSize, fUseMuxes, fRecursive, fOptArea, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &blut [-KC num] [-mravh]\n" );
    Abc_Print( -2, "\t           performs AIG balancing for the given LUT size\n" );
    Abc_Print( -2, "\t-K num   : LUT size for the mapping (2 <= K <= %d) [default = %d]\n", 6, nLutSize );
    Abc_Print( -2, "\t-C num   : the max number of priority cuts (1 <= C <= %d) [default = %d]\n", 8, nCutNum );
    Abc_Print( -2, "\t-m       : toggle performing MUX restructuring [default = %s]\n", fUseMuxes? "yes": "no" );
    Abc_Print( -2, "\t-r       : toggle performing recursive restructuring [default = %s]\n", fRecursive? "yes": "no" );
    Abc_Print( -2, "\t-a       : toggle performing area-oriented restructuring [default = %s]\n", fOptArea? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
//    Abc_Print( -2, "\t-w       : toggle printing additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Resub( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManResub1( char * pFileName, int nNodes, int nSupp, int nDivs, int iChoice, int fUseXor, int fVerbose, int fVeryVerbose );
    extern Gia_Man_t * Gia_ManResub2( Gia_Man_t * pGia, int nNodes, int nSupp, int nDivs, int iChoice, int fUseXor, int fVerbose, int fVeryVerbose );
    Gia_Man_t * pTemp;
    int nNodes       =  0;
    int nSupp        =  0;
    int nDivs        =  0;
    int c, fVerbose  =  0;
    int fVeryVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NSDvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-N\" should be followed by a floating point number.\n" );
                return 0;
            }
            nNodes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodes < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-S\" should be followed by a floating point number.\n" );
                return 0;
            }
            nSupp = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSupp < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                return 0;
            }
            nDivs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDivs < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
    {
        pTemp = Gia_ManResub1( argv[globalUtilOptind], nNodes, nSupp, nDivs, 0, 0, fVerbose, fVeryVerbose );
        Abc_FrameUpdateGia( pAbc, pTemp );
        return 0;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Resub(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManResub2( pAbc->pGia, nNodes, nSupp, nDivs, 0, 0, fVerbose, fVeryVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &resub [-NSD num] [-vwh]\n" );
    Abc_Print( -2, "\t           performs AIG resubstitution\n" );
    Abc_Print( -2, "\t-N num   : the limit on added nodes (num >= 0) [default = %d]\n",     nNodes );
    Abc_Print( -2, "\t-S num   : the limit on support size (num > 0) [default = %d]\n",     nSupp );
    Abc_Print( -2, "\t-D num   : the limit on divisor count (num > 0) [default = %d]\n",    nDivs );
    Abc_Print( -2, "\t-v       : toggles printing verbose information [default = %s]\n",    fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles printing additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Reshape( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManReshape1( Gia_Man_t * pGia, int fUseSimple, int fVerbose, int fVeryVerbose );
    extern Gia_Man_t * Gia_ManReshape2( Gia_Man_t * pGia, int fUseSimple, int fVerbose, int fVeryVerbose );
    Gia_Man_t * pTemp;
    int fUseReshape1 =  0;
    int fUseSimple   =  0;
    int c, fVerbose  =  0;
    int fVeryVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "asvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fUseReshape1 ^= 1;
            break;
        case 's':
            fUseSimple ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Resub(): There is no AIG.\n" );
        return 1;
    }
    if ( fUseReshape1 )
        pTemp = Gia_ManReshape1( pAbc->pGia, fUseSimple, fVerbose, fVeryVerbose );
    else
        pTemp = Gia_ManReshape2( pAbc->pGia, fUseSimple, fVerbose, fVeryVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &reshape [-asvwh]\n" );
    Abc_Print( -2, "\t           performs AIG resubstitution\n" );
    Abc_Print( -2, "\t-a       : toggles selecting the algorithm [default = %s]\n",         fUseReshape1? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggles using simple method [default = %s]\n",             fUseSimple? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles printing verbose information [default = %s]\n",    fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles printing additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Syn2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, fVerbose  =  0;
    int fOldAlgo     =  0;
    int fCoarsen     =  1;
    int fCutMin      =  0;
    int nRelaxRatio  = 20;
    int fDelayMin    =  0;
    int fVeryVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Rakmdvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
                return 0;
            }
            nRelaxRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRelaxRatio < 0 )
                goto usage;
            break;
        case 'a':
            fOldAlgo ^= 1;
            break;
        case 'k':
            fCoarsen ^= 1;
            break;
        case 'm':
            fCutMin ^= 1;
            break;
        case 'd':
            fDelayMin ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Syn2(): There is no AIG.\n" );
        return 1;
    }
    if ( fDelayMin )
    {
        If_DsdMan_t * p = (If_DsdMan_t *)Abc_FrameReadManDsd();
        if ( p && If_DsdManVarNum(p) < 6 )
        {
            printf( "DSD manager has incompatible number of variables. Delay minimization is not performed.\n" );
            fDelayMin = 0;
        }
    }
    pTemp = Gia_ManAigSyn2( pAbc->pGia, fOldAlgo, fCoarsen, fCutMin, nRelaxRatio, fDelayMin, fVerbose, fVeryVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &syn2 [-R num] [-akmdvh]\n" );
    Abc_Print( -2, "\t           performs AIG optimization\n" );
    Abc_Print( -2, "\t-R num   : the delay relaxation ratio (num >= 0) [default = %d]\n",   nRelaxRatio );
    Abc_Print( -2, "\t-a       : toggles using the old algorithm [default = %s]\n",         fOldAlgo? "yes": "no" );
    Abc_Print( -2, "\t-k       : toggles coarsening the subject graph [default = %s]\n",    fCoarsen? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggles cut minimization [default = %s]\n",                fCutMin? "yes": "no" );
    Abc_Print( -2, "\t-d       : toggles additional delay optimization [default = %s]\n",   fDelayMin? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles printing verbose information [default = %s]\n",    fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles printing additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Synch2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManAigSynch2( Gia_Man_t * p, void * pPars, int nLutSize, int nRelaxRatio );
    Gia_Man_t * pTemp;
    Dch_Pars_t Pars, * pPars = &Pars;
    int c, nLutSize = 6;
    int nRelaxRatio = 20;
    // set defaults
    Dch_ManSetDefaultParams( pPars );
    pPars->nBTLimit = 100;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WCSKRfrvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSatVarMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSatVarMax < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a char string.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
                return 0;
            }
            nRelaxRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRelaxRatio < 0 )
                goto usage;
            break;
        case 'f':
            pPars->fLightSynth ^= 1;
            break;
        case 'r':
            pPars->fSkipRedSupp ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Dch(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManAigSynch2( pAbc->pGia, pPars, nLutSize, nRelaxRatio );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &synch2 [-WCSKR num] [-frvh]\n" );
    Abc_Print( -2, "\t         computes structural choices using a new approach\n" );
    Abc_Print( -2, "\t-W num : the max number of simulation words [default = %d]\n", pPars->nWords );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-S num : the max number of SAT variables [default = %d]\n", pPars->nSatVarMax );
    Abc_Print( -2, "\t-K num : the target LUT size for downstream mapping [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-R num : the delay relaxation ratio (num >= 0) [default = %d]\n",   nRelaxRatio );
    Abc_Print( -2, "\t-f     : toggle using lighter logic synthesis [default = %s]\n", pPars->fLightSynth? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle skipping choices with redundant support [default = %s]\n", pPars->fSkipRedSupp? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Syn3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    int fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Syn3(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManAigSyn3( pAbc->pGia, fVerbose, fVeryVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &syn3 [-lvh]\n" );
    Abc_Print( -2, "\t         performs AIG optimization\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Syn4( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    int fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Syn4(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManAigSyn4( pAbc->pGia, fVerbose, fVeryVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &syn4 [-lvh]\n" );
    Abc_Print( -2, "\t         performs AIG optimization\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9False( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManCheckFalse( Gia_Man_t * p, int nSlackMax, int nTimeOut, int fVerbose, int fVeryVerbose );
    Gia_Man_t * pTemp;
    int nSlackMax = 0;
    int nTimeOut = 0;
    int c, fVerbose = 0;
    int fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "STvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a char string.\n" );
                goto usage;
            }
            nSlackMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSlackMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by a char string.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9False(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManCheckFalse( pAbc->pGia, nSlackMax, nTimeOut, fVerbose, fVeryVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &false [-ST num] [-vwh]\n" );
    Abc_Print( -2, "\t         detecting and elimintation false paths\n" );
    Abc_Print( -2, "\t-S num : maximum slack to identify false paths [default = %d]\n",  nSlackMax );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n",   nTimeOut );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",    fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing additional information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Miter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManPairWiseMiter( Gia_Man_t * p );
    extern Gia_Man_t * Gia_ManDupWithCare( Gia_Man_t * p, Gia_Man_t * pCare );
    FILE * pFile;
    Gia_Man_t * pAux;
    Gia_Man_t * pSecond;
    char * FileName, * pTemp;
    char ** pArgvNew;
    int nArgcNew;
    int c;
    int nInsDup  = 0;
    int fDualOut = 0;
    int fSeq     = 0;
    int fPairWise= 0;
    int fTrans   = 0;
    int fTransX  = 0;
    int fConvert = 0;
    int fTransZ  = 0;
    int fWithCare= 0;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Idsptxyzcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a char string.\n" );
                goto usage;
            }
            nInsDup = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nInsDup < 0 )
                goto usage;
            break;
        case 'd':
            fDualOut ^= 1;
            break;
        case 's':
            fSeq ^= 1;
            break;
        case 'p':
            fPairWise ^= 1;
            break;
        case 't':
            fTrans ^= 1;
            break;
        case 'x':
            fTransX ^= 1;
            break;
        case 'y':
            fConvert ^= 1;
            break;
        case 'z':
            fTransZ ^= 1;
            break;
        case 'c':
            fWithCare ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( fPairWise )
    {
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9Miter(): There is no AIG.\n" );
            return 1;
        }
        pAux = Gia_ManPairWiseMiter( pAbc->pGia );
        Abc_FrameUpdateGia( pAbc, pAux );
        return 0;
    }
    if ( fTrans || fTransX || fTransZ || fConvert )
    {
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9Miter(): There is no AIG.\n" );
            return 1;
        }
        if ( (Gia_ManPoNum(pAbc->pGia) & 1) == 1 )
        {
            Abc_Print( -1, "Abc_CommandAbc9Miter(): The number of outputs should be even.\n" );
            return 0;
        }
        if ( fTrans )
        {
            pAux = Gia_ManTransformMiter( pAbc->pGia );
            Abc_Print( 1, "The miter (current AIG) is transformed by XORing POs pair-wise.\n" );
        }
        else if ( fTransX )
        {
            pAux = Gia_ManTransformMiter2( pAbc->pGia );
            Abc_Print( 1, "The miter (current AIG) is transformed by XORing POs of two word-level outputs.\n" );
        }
        else if ( fTransZ ) 
        {
            extern Gia_Man_t * Gia_ManTransformDualOutput( Gia_Man_t * p );
            pAux = Gia_ManTransformDualOutput( pAbc->pGia );
            Abc_Print( 1, "The dual-output miter (current AIG) is transformed by ordering sides.\n" );
        }
        else
        {
            pAux = Gia_ManTransformTwoWord2DualOutput( pAbc->pGia );
            Abc_Print( 1, "The miter (current AIG) is transformed from two-word to dual-output.\n" );
        }
        Abc_FrameUpdateGia( pAbc, pAux );
        return 0;
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }

    // get the input file name
    FileName = pArgvNew[0];
    // fix the wrong symbol
    for ( pTemp = FileName; *pTemp; pTemp++ )
        if ( *pTemp == '>' )
            *pTemp = '\\';
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", NULL, NULL, NULL, NULL )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );
    pSecond = Gia_AigerRead( FileName, 0, 0, 0 );
    if ( pSecond == NULL )
    {
        Abc_Print( -1, "Reading AIGER has failed.\n" );
        return 0;
    }
    // compute the miter
    if ( fWithCare )
        pAux = Gia_ManDupWithCare( pAbc->pGia, pSecond );
    else
        pAux = Gia_ManMiter( pAbc->pGia, pSecond, nInsDup, fDualOut, fSeq, 0, fVerbose );
    Gia_ManStop( pSecond );
    Abc_FrameUpdateGia( pAbc, pAux );
    return 0;

usage:
    Abc_Print( -2, "usage: &miter [-I num] [-dsptxyzcvh] <file>\n" );
    Abc_Print( -2, "\t         creates miter of two designs (current AIG vs. <file>)\n" );
    Abc_Print( -2, "\t-I num : the number of last PIs to replicate [default = %d]\n", nInsDup );
    Abc_Print( -2, "\t-d     : toggle creating dual-output miter [default = %s]\n", fDualOut? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle creating sequential miter [default = %s]\n", fSeq? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle creating pair-wise miter [default = %s]\n", fPairWise? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle XORing POs of dual-output miter [default = %s]\n", fTrans? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggle XORing POs of two-word miter [default = %s]\n", fTransX? "yes": "no" );
    Abc_Print( -2, "\t-y     : toggle convering two-word miter into dual-output miter [default = %s]\n", fConvert? "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle ordering sides of the dual-output miter [default = %s]\n", fTransZ? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle duplicating AIG with the care set [default = %s]\n", fWithCare? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : AIGER file with the design to miter\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Miter2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    FILE * pFile;
    Gia_Man_t * pAux;
    char * FileName, * pTemp, * pInit;
    char ** pArgvNew;
    int nArgcNew;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }
    // get the input file name
    FileName = pArgvNew[0];
    // fix the wrong symbol
    for ( pTemp = FileName; *pTemp; pTemp++ )
        if ( *pTemp == '>' )
            *pTemp = '\\';
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", NULL, NULL, NULL, NULL )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );
    // extract string
    pInit = Extra_FileReadContents( FileName );
    Extra_StringClean( pInit, "01xX" );
    if ( (int)strlen(pInit) != Gia_ManCiNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Init string length (%d) differs from PI and flop count (%d).\n", strlen(pInit), Gia_ManCiNum(pAbc->pGia) );
        ABC_FREE( pInit );
        return 1;
    }
    // compute the miter
    pAux = Gia_ManMiter2( pAbc->pGia, pInit, fVerbose );
    ABC_FREE( pInit );
    Abc_FrameUpdateGia( pAbc, pAux );
    return 0;

usage:
    Abc_Print( -2, "usage: &miter2 [-vh] <file>\n" );
    Abc_Print( -2, "\t         creates miter of two copies of the design\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file name with flop initial values (0/1/x/X) [default = required]\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Append( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    FILE * pFile;
    Gia_Man_t * pSecond;
    char * FileName, * pTemp;
    char ** pArgvNew;
    int nArgcNew;
    int c, fShareCis = 0;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'i':
            fShareCis ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 1;
    }

    // get the input file name
    FileName = pArgvNew[0];
    // fix the wrong symbol
    for ( pTemp = FileName; *pTemp; pTemp++ )
        if ( *pTemp == '>' )
            *pTemp = '\\';
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", NULL, NULL, NULL, NULL )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );
    pSecond = Gia_AigerRead( FileName, 0, 0, 0 );
    if ( pSecond == NULL )
    {
        Abc_Print( -1, "Reading AIGER has failed.\n" );
        return 0;
    }
    if ( fShareCis && Gia_ManCiNum(pAbc->pGia) != Gia_ManCiNum(pSecond) )
    {
        Abc_Print( -1, "The AIGs have different number of combinational inputs.\n" );
        return 0;
    }
    // compute the miter
    Gia_ManDupAppend( pAbc->pGia, pSecond, fShareCis );
    Gia_ManStop( pSecond );
    return 0;

usage:
    Abc_Print( -2, "usage: &append [-ivh] <file>\n" );
    Abc_Print( -2, "\t         appends <file> to the current AIG using new PIs and POs\n" );
    Abc_Print( -2, "\t-i     : toggle sharing combinational inputs [default = %s]\n", fShareCis? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : AIGER file with the design to miter\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Scl( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c;
    int fConst = 1;
    int fEquiv = 1;
    int fVerbose = 0;
    int fVerboseFlops = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "cevwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fConst ^= 1;
            break;
        case 'e':
            fEquiv ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVerboseFlops ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Scl(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManBoxNum(pAbc->pGia) && Gia_ManRegBoxNum(pAbc->pGia) )
    {
        if ( pAbc->pGia->pAigExtra == NULL )
        {
            printf( "Timing manager is given but there is no GIA of boxes.\n" );
            return 0;
        }
        pTemp = Gia_ManSweepWithBoxes( pAbc->pGia, NULL, NULL, fConst, fEquiv, fVerbose, fVerboseFlops );
        Abc_FrameUpdateGia( pAbc, pTemp );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    pTemp = Gia_ManSeqStructSweep( pAbc->pGia, fConst, fEquiv, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &scl [-cevwh]\n" );
    Abc_Print( -2, "\t         performs structural sequential cleanup\n" );
    Abc_Print( -2, "\t-c     : toggle removing stuck-at constant registers [default = %s]\n", fConst? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle removing equivalent-driver registers [default = %s]\n", fEquiv? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing verbose info about equivalent flops [default = %s]\n", fVerboseFlops? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Lcorr( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Cec_ParCor_t Pars, * pPars = &Pars;
    Gia_Man_t * pTemp;
    int c;
    Cec_ManCorSetDefaultParams( pPars );
    pPars->fLatchCorr = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FCPXrcvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFrames < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nPrefix = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nPrefix < 0 )
                goto usage;
            break;
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLimitMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLimitMax < 0 )
                goto usage;
            break;
        case 'r':
            pPars->fUseRings ^= 1;
            break;
        case 'c':
            pPars->fUseCSat ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVerboseFlops ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Lcorr(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManBoxNum(pAbc->pGia) && Gia_ManRegBoxNum(pAbc->pGia) )
    {
        if ( pAbc->pGia->pAigExtra == NULL )
        {
            printf( "Timing manager is given but there is no GIA of boxes.\n" );
            return 0;
        }
        pTemp = Gia_ManSweepWithBoxes( pAbc->pGia, NULL, pPars, 0, 0, pPars->fVerbose, pPars->fVerboseFlops );
        Abc_FrameUpdateGia( pAbc, pTemp );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    pTemp = Cec_ManLSCorrespondence( pAbc->pGia, pPars );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &lcorr [-FCPX num] [-rcvwh]\n" );
    Abc_Print( -2, "\t         performs latch correpondence computation\n" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-F num : the number of timeframes in inductive case [default = %d]\n", pPars->nFrames );
    Abc_Print( -2, "\t-P num : the number of timeframes in the prefix [default = %d]\n", pPars->nPrefix );
    Abc_Print( -2, "\t-X num : the number of iterations of little or no improvement [default = %d]\n", pPars->nLimitMax );
    Abc_Print( -2, "\t-r     : toggle using implication rings during refinement [default = %s]\n", pPars->fUseRings? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle using circuit-based SAT solver [default = %s]\n", pPars->fUseCSat? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing verbose info about equivalent flops [default = %s]\n", pPars->fVerboseFlops? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Scorr( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Cec_ManScorrCorrespondence( Gia_Man_t * p, Cec_ParCor_t * pPars );
    extern Gia_Man_t * Gia_ManScorrDivideTest( Gia_Man_t * p, Cec_ParCor_t * pPars );
    extern Gia_Man_t * Gia_SignalCorrespondencePart( Gia_Man_t * p, Cec_ParCor_t * pPars );
    Cec_ParCor_t Pars, * pPars = &Pars;
    Gia_Man_t * pTemp;
    int fPartition = 0;
    int nFlopIncFreq = 0;
    int fUseOld = 0, c;
    Cec_ManCorSetDefaultParams( pPars );
    pPars->nProcs = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FCGXPSZpkrecqiowvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFrames < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nPrefix = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nPrefix < 0 )
                goto usage;
            break;
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLimitMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLimitMax < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nProcs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nProcs < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nPartSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nPartSize < 0 )
                goto usage;
            break;            
        case 'Z':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Z\" should be followed by an integer.\n" );
                goto usage;
            }
            nFlopIncFreq = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFlopIncFreq < 0 )
                goto usage;
            break;            
        case 'p':
            fPartition ^= 1;
            break;
        case 'k':
            pPars->fConstCorr ^= 1;
            break;
        case 'r':
            pPars->fUseRings ^= 1;
            break;
        case 'e':
            pPars->fMakeChoices ^= 1;
            break;
        case 'c':
            pPars->fUseCSat ^= 1;
            break;
        case 'q':
            pPars->fStopWhenGone ^= 1;
            break;
        case 'i':
            pPars->fIncremental ^= 1;
            break;
        case 'o':
            fUseOld ^= 1;
            break;
        case 'w':
            pPars->fVerboseFlops ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Scorr(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManBoxNum(pAbc->pGia) && Gia_ManRegBoxNum(pAbc->pGia) )
    {
        if ( pAbc->pGia->pAigExtra == NULL )
        {
            printf( "Timing manager is given but there is no GIA of boxes.\n" );
            return 0;
        }
        pTemp = Gia_ManSweepWithBoxes( pAbc->pGia, NULL, pPars, 0, 0, pPars->fVerbose, pPars->fVerboseFlops );
        Abc_FrameUpdateGia( pAbc, pTemp );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( 0, "The network is combinational.\n" );
        return 0;
    }
    if ( nFlopIncFreq )
    {
        extern Gia_Man_t * Gia_ManDupStopsAdd( Gia_Man_t * p, Vec_Int_t * vStops );
        extern Gia_Man_t * Gia_ManDupStopsRem( Gia_Man_t * p, Vec_Int_t * vStops );
        extern Vec_Int_t * Gia_ManFindStopFlops( Gia_Man_t * p, int nFlopIncFreq, int fVerbose );
        Vec_Int_t * vStops = Gia_ManFindStopFlops( pAbc->pGia, nFlopIncFreq, pPars->fVerbose );
        if ( vStops )
        {
            extern void Gia_ManTransferEquivs2( Gia_Man_t * p, Gia_Man_t * pNew );
            Gia_Man_t * pUsed = Gia_ManDupStopsAdd( pAbc->pGia, vStops );
            if ( pPars->nPartSize > 0 )
                pTemp = Gia_SignalCorrespondencePart( pUsed, pPars );
            else if ( fUseOld )
                pTemp = Cec_ManScorrCorrespondence( pUsed, pPars );
            else if ( fPartition )
                pTemp = Gia_ManScorrDivideTest( pUsed, pPars );
            else
                pTemp = Cec_ManLSCorrespondence( pUsed, pPars );
            Gia_ManTransferEquivs2( pUsed, pAbc->pGia );
            Gia_ManStop( pUsed );
            pTemp = Gia_ManDupStopsRem( pUsed = pTemp, vStops );
            Gia_ManStop( pUsed );
            Abc_FrameUpdateGia( pAbc, pTemp );
            Vec_IntFree( vStops );
            return 0;
        }
    }
    if ( pPars->nPartSize > 0 )
        pTemp = Gia_SignalCorrespondencePart( pAbc->pGia, pPars );
    else if ( fUseOld )
        pTemp = Cec_ManScorrCorrespondence( pAbc->pGia, pPars );
    else if ( fPartition )
        pTemp = Gia_ManScorrDivideTest( pAbc->pGia, pPars );
    else
        pTemp = Cec_ManLSCorrespondence( pAbc->pGia, pPars );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &scorr [-FCGXPSZ num] [-pkrecqiowvh]\n" );
    Abc_Print( -2, "\t         performs signal correpondence computation\n" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-F num : the number of timeframes in inductive case [default = %d]\n", pPars->nFrames );
    Abc_Print( -2, "\t-G num : the number of timeframes in the prefix [default = %d]\n", pPars->nPrefix );
    Abc_Print( -2, "\t-X num : the number of iterations of little or no improvement [default = %d]\n", pPars->nLimitMax );
    Abc_Print( -2, "\t-P num : the number of concurrent processes [default = %d]\n", pPars->nProcs );
    Abc_Print( -2, "\t-S num : the number of flops in one partition [default = %d]\n", pPars->nPartSize );
    Abc_Print( -2, "\t-Z num : the average flop include frequency [default = %d]\n", nFlopIncFreq );
    Abc_Print( -2, "\t-p     : toggle using partitioning for the input AIG [default = %s]\n", fPartition? "yes": "no" );
    Abc_Print( -2, "\t-k     : toggle using constant correspondence [default = %s]\n", pPars->fConstCorr? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle using implication rings during refinement [default = %s]\n", pPars->fUseRings? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle using equivalences as choices [default = %s]\n", pPars->fMakeChoices? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle using circuit-based SAT solver [default = %s]\n", pPars->fUseCSat? "yes": "no" );
    Abc_Print( -2, "\t-q     : toggle quitting when PO is not a constant candidate [default = %s]\n", pPars->fStopWhenGone? "yes": "no" );
    Abc_Print( -2, "\t-i     : toggle incremental TFO-triggered re-proof in main loop [default = %s] by Xiran ZHao at University of Chinese Academy of Sciences\n", pPars->fIncremental? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle calling old engine [default = %s]\n", fUseOld? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing verbose info about equivalent flops [default = %s]\n", pPars->fVerboseFlops? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Choice( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Cec_ParChc_t Pars, * pPars = &Pars;
    Gia_Man_t * pTemp;
    int c;
    Cec_ManChcSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ccvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'c':
            pPars->fUseCSat ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Choice(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Cec_ManChoiceComputation( pAbc->pGia, pPars );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &choice [-C num] [-cvh]\n" );
    Abc_Print( -2, "\t         performs computation of structural choices\n" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-c     : toggle using circuit-based SAT solver [default = %s]\n", pPars->fUseCSat? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Sat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Vec_Int_t * Cbs2_ManSolveMiterNc( Gia_Man_t * pAig, int nConfs, Vec_Str_t ** pvStatus, int fVerbose );
    extern Vec_Int_t * Cbs3_ManSolveMiterNc( Gia_Man_t * pAig, int nConfs, int nRestarts, Vec_Str_t ** pvStatus, int fVerbose );
    Cec_ParSat_t ParsSat, * pPars = &ParsSat;
    Gia_Man_t * pTemp;
    int c;
    int fNewSolver = 0, fNewSolver2 = 0, fCSat = 0, f0Proved = 0, nRestarts = 1;
    Cec_ManSatSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "JCRSNanmtcxyzvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'J':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-J\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->SolverType = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->SolverType < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRestarts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRestarts < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSatVarMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSatVarMax < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nCallsRecycle = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCallsRecycle < 0 )
                goto usage;
            break;
        case 'a':
            pPars->fSaveCexes ^= 1;
            break;
        case 'n':
            pPars->fNonChrono ^= 1;
            break;
        case 'm':
            pPars->fCheckMiter ^= 1;
            break;
        case 't':
            pPars->fLearnCls ^= 1;
            break;
        case 'c':
            fCSat ^= 1;
            break;
        case 'x':
            fNewSolver ^= 1;
            break;
        case 'y':
            fNewSolver2 ^= 1;
            break;
        case 'z':
            f0Proved ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Sat(): There is no AIG.\n" );
        return 1;
    }
    if ( fCSat )
    {
        Vec_Int_t * vCounters;
        Vec_Str_t * vStatus;
        if ( fNewSolver )
            vCounters = Cbs2_ManSolveMiterNc( pAbc->pGia, pPars->nBTLimit, &vStatus, pPars->fVerbose );
        else if ( fNewSolver2 )
            vCounters = Cbs3_ManSolveMiterNc( pAbc->pGia, pPars->nBTLimit, nRestarts, &vStatus, pPars->fVerbose );
        else if ( pPars->fLearnCls )
            vCounters = Tas_ManSolveMiterNc( pAbc->pGia, pPars->nBTLimit, &vStatus, pPars->fVerbose );
        else if ( pPars->fNonChrono )
            vCounters = Cbs_ManSolveMiterNc( pAbc->pGia, pPars->nBTLimit, &vStatus, f0Proved, pPars->fVerbose );
        else
            vCounters = Cbs_ManSolveMiter( pAbc->pGia, pPars->nBTLimit, &vStatus, pPars->fVerbose );
        Vec_IntFree( vCounters );
        Vec_StrFree( vStatus );
    }
    else
    {
        pTemp = Cec_ManSatSolving( pAbc->pGia, pPars, f0Proved );
        Abc_FrameUpdateGia( pAbc, pTemp );
    }
    if ( pAbc->pGia->vSeqModelVec )
    {
        Vec_Int_t * vStatuses = Abc_FrameDeriveStatusArray2( pAbc->pGia->vSeqModelVec );
        Abc_FrameReplacePoStatuses( pAbc, &vStatuses );
        Abc_FrameReplaceCexVec( pAbc, &pAbc->pGia->vSeqModelVec );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &sat [-JCRSN <num>] [-anmctxzvh]\n" );
    Abc_Print( -2, "\t         performs SAT solving for the combinational outputs\n" );
    Abc_Print( -2, "\t-J num : the SAT solver type [default = %d]\n", pPars->SolverType );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-R num : the max number of restarts at a node [default = %d]\n", nRestarts );
    Abc_Print( -2, "\t-S num : the min number of variables to recycle the solver [default = %d]\n", pPars->nSatVarMax );
    Abc_Print( -2, "\t-N num : the min number of calls to recycle the solver [default = %d]\n", pPars->nCallsRecycle );
    Abc_Print( -2, "\t-a     : toggle solving all outputs and saving counter-examples [default = %s]\n", pPars->fSaveCexes? "yes": "no" );
    Abc_Print( -2, "\t-n     : toggle using non-chronological backtracking [default = %s]\n", pPars->fNonChrono? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle miter vs. any circuit [default = %s]\n", pPars->fCheckMiter? "miter": "circuit" );
    Abc_Print( -2, "\t-c     : toggle using circuit-based SAT solver [default = %s]\n", fCSat? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle using learning in curcuit-based solver [default = %s]\n", pPars->fLearnCls? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggle using new solver [default = %s]\n", fNewSolver? "yes": "no" );
    Abc_Print( -2, "\t-y     : toggle using new solver [default = %s]\n", fNewSolver2? "yes": "no" );
    Abc_Print( -2, "\t-z     : toggle replacing proved cones by const0 [default = %s]\n", f0Proved? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SatEnum( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Gia_ManSatEnum( Gia_Man_t * p, int nConfLimit, int nTimeOut, int fVerbose );
    int c, nConfLimit = 0, nTimeOut = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CTvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SatEnum(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManSatEnum( pAbc->pGia, nConfLimit, nTimeOut, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &satenum [-CT <num>] [-vh]\n" );
    Abc_Print( -2, "\t         enumerates solutions of the combinational miter\n" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", nConfLimit );
    Abc_Print( -2, "\t-T num : global timeout [default = %d]\n", nTimeOut );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",   fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    [Abc_CommandAbc9AdvGenSim]

  Description [This function calls SimGen tool]

  SideEffects []

  SeeAlso     []

***********************************************************************/

int Abc_CommandAbc9AdvGenSim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Cec_SimGenSetParDefault( Cec_ParSimGen_t * pPars );
    extern Gia_Man_t * Cec_SimGenRun( Gia_Man_t * pAig, Cec_ParSimGen_t * pPars );

    Cec_ParSimGen_t ParsFra, * pPars = &ParsFra; Gia_Man_t * pTemp;
    int c;
    Cec_SimGenSetParDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "EOStiFwvV" ) ) != EOF )
    {
        switch ( c )
        {
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->expId = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->expId < 0 )
                goto usage;
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->bitwidthOutgold = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->bitwidthOutgold <= 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSimWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSimWords <= 0 )
                goto usage;
            break;
        case 't':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-t\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->timeOutSim = atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->timeOutSim <= 0 )
                goto usage;
            break;
        case 'i':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-i\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nMaxIter = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxIter <= -2 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a string.\n" );
                goto usage;
            }
            pPars->pFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;  
        case 'w':
            pPars->fUseWatchlist = 1;
            break;
        case 'v':
            pPars->fVerbose = 1;
            break;
        case 'V':
            pPars->fVeryVerbose = 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Fraig(): There is no AIG.\n" );
        return 1;
    }
    
    pTemp = Cec_SimGenRun(pAbc->pGia, pPars );
    if ( pAbc->pGia->pCexSeq != NULL )
    {
        pAbc->Status  = 0;
        pAbc->nFrames = 0;
        Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    }
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &adv_sim_gen [-EOSsivV <num>] [-v] \n" );
    Abc_Print( -2, "\t         generates simulation patterns for combinational SAT sweeping\n" );
    Abc_Print( -2, "\t-E num : the experiment ID for different techniques [default = %d]\n", pPars->expId );
    Abc_Print( -2, "\t-O num : the bitwidth of the output gold [default = %d]\n", pPars->bitwidthOutgold );
    Abc_Print( -2, "\t-S num : the number of words in a round for random simulation [default = %d]\n", pPars->nSimWords );
    Abc_Print( -2, "\t-t num : the timeout value [default = %.0f]\n", pPars->timeOutSim);
    Abc_Print( -2, "\t-i num : the number of rounds of random simulation [default = %d]\n", pPars->nMaxIter );
    Abc_Print( -2, "\t-F file: the file name to dump the generated patterns  [default = none]\n");
    Abc_Print( -2, "\t-w     : activates the watchlist feature [default = %d]\n", pPars->fUseWatchlist);
    Abc_Print( -2, "\t-v     : verbose [default = %d]\n", pPars->fVerbose );
    Abc_Print( -2, "\t-V     : very verbose [default = %d]\n", pPars->fVeryVerbose );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Fraig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Cec4_ManSetParams( Cec_ParFra_t * pPars );
    extern Gia_Man_t * Cec2_ManSimulateTest( Gia_Man_t * p, Cec_ParFra_t * pPars );
    extern Gia_Man_t * Cec3_ManSimulateTest( Gia_Man_t * p, Cec_ParFra_t * pPars );
    extern Gia_Man_t * Cec4_ManSimulateTest( Gia_Man_t * p, Cec_ParFra_t * pPars );
    extern void        Cec4_ManSimulateTest5( Gia_Man_t * p, int nConfs, int fVerbose );
    extern Gia_Man_t * Cec5_ManSimulateTest( Gia_Man_t * p, Cec_ParFra_t * pPars, int fCbs, int approxLim, int subBatchSz, int adaRecycle );
    extern Gia_Man_t * Gia_ManIvyFraig( Gia_Man_t * p, int nConfLimit, int fUseProve, int fVerbose );
    Cec_ParFra_t ParsFra, * pPars = &ParsFra; Gia_Man_t * pTemp;
    int c, fUseAlgo = 0, fUseAlgoG = 0, fUseAlgoX = 0, fUseAlgoY = 0, fUseSave = 0, fUseIvy = 0, fUseProve = 0;
    int fCbs = 1, approxLim = 600, subBatchSz = 1, adaRecycle = 500, nMaxNodes = 0;
    Cec4_ManSetParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "JWRILDCNPMFrmdckngxysopwqvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'J':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-J\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->jType = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->jType < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRounds < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nItersMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nItersMax < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLevelMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLevelMax < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nDepthMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nDepthMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nCallsRecycle = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCallsRecycle < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nGenIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nGenIters < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nMaxNodes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMaxNodes < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->pDumpName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;            
        case 'r':
            pPars->fRewriting ^= 1;
            break;
        case 'm':
            pPars->fCheckMiter ^= 1;
            break;
        case 'd':
            pPars->fDualOut ^= 1;
            break;
        case 'c':
            pPars->fRunCSat ^= 1;
            break;
        case 'k':
            pPars->fUseCones ^= 1;
            break;
        case 'n':
            fUseAlgo ^= 1;
            break;
        case 'g':
            fUseAlgoG ^= 1;
            break;
        case 'x':
            fUseAlgoX ^= 1;
            break;
        case 'y':
            fUseAlgoY ^= 1;
            break;
        case 's':
            fUseSave ^= 1;
            break;
        case 'o':
            fUseIvy ^= 1;
            break;
        case 'p':
            fUseProve ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'q':
            pPars->fBMiterInfo ^= 1;
            break;      
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Fraig(): There is no AIG.\n" );
        return 1;
    }
    if ( fUseSave )
    {
        Cec4_ManSimulateTest5( pAbc->pGia, pPars->nBTLimit, pPars->fVerbose );
        return 0;
    }
    else if ( fUseIvy && (!nMaxNodes || Gia_ManAndNum(pAbc->pGia) < nMaxNodes) )
        pTemp = Gia_ManIvyFraig( pAbc->pGia, pPars->nBTLimit, fUseProve, pPars->fVerbose );
    else if ( fUseAlgo )
        pTemp = Cec2_ManSimulateTest( pAbc->pGia, pPars );
    else if ( fUseAlgoG )
        pTemp = Cec3_ManSimulateTest( pAbc->pGia, pPars );
    else if ( fUseAlgoX )
        pTemp = Cec4_ManSimulateTest( pAbc->pGia, pPars );
    else if ( fUseAlgoY )
        pTemp = Cec5_ManSimulateTest( pAbc->pGia, pPars, fCbs, approxLim, subBatchSz, adaRecycle );
    else 
        pTemp = Cec_ManSatSweeping( pAbc->pGia, pPars, 0 );
    if ( pAbc->pGia->pCexSeq != NULL )
    {
        pAbc->Status  = 0;
        pAbc->nFrames = 0;
        Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    }
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &fraig [-JWRILDCNPM <num>] [-F filename] [-rmdckngxysopwvh]\n" );
    Abc_Print( -2, "\t         performs combinational SAT sweeping\n" );
    Abc_Print( -2, "\t-J num : the solver type [default = %d]\n", pPars->jType );
    Abc_Print( -2, "\t-W num : the number of simulation words [default = %d]\n", pPars->nWords );
    Abc_Print( -2, "\t-R num : the number of simulation rounds [default = %d]\n", pPars->nRounds );
    Abc_Print( -2, "\t-I num : the number of sweeping iterations [default = %d]\n", pPars->nItersMax );
    Abc_Print( -2, "\t-L num : the max number of levels of nodes to consider [default = %d]\n", pPars->nLevelMax );
    Abc_Print( -2, "\t-D num : the max number of steps of speculative reduction [default = %d]\n", pPars->nDepthMax );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-N num : the min number of calls to recycle the solver [default = %d]\n", pPars->nCallsRecycle );
    Abc_Print( -2, "\t-P num : the number of pattern generation iterations [default = %d]\n", pPars->nGenIters );
    Abc_Print( -2, "\t-M num : the node count limit to call the old sweeper [default = %d]\n", nMaxNodes );
    Abc_Print( -2, "\t-F file: the file name to dump primary output information [default = none]\n" );
    Abc_Print( -2, "\t-r     : toggle the use of AIG rewriting [default = %s]\n", pPars->fRewriting? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle miter vs. any circuit [default = %s]\n", pPars->fCheckMiter? "miter": "circuit" );
    Abc_Print( -2, "\t-d     : toggle using double output miters [default = %s]\n", pPars->fDualOut? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle using circuit-based solver [default = %s]\n", pPars->fRunCSat? "yes": "no" );
    Abc_Print( -2, "\t-k     : toggle using logic cones in the SAT solver [default = %s]\n", pPars->fUseCones? "yes": "no" );
    Abc_Print( -2, "\t-n     : toggle using new implementation [default = %s]\n", fUseAlgo? "yes": "no" );
    Abc_Print( -2, "\t-g     : toggle using another new implementation [default = %s]\n", fUseAlgoG? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggle using another new implementation [default = %s]\n", fUseAlgoX? "yes": "no" );
    Abc_Print( -2, "\t-y     : toggle using another new implementation [default = %s]\n", fUseAlgoY? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle dumping equivalences into a file [default = %s]\n", fUseSave? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle using the old SAT sweeper [default = %s]\n", fUseIvy? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle trying to prove when running the old SAT sweeper [default = %s]\n", fUseProve? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing even more verbose information [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-q     : toggle printing additional information for boundary miters [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9CFraig( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c;
    Ssc_Pars_t Pars, * pPars = &Pars;
    Ssc_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WCacvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'a':
            pPars->fAppend ^= 1;
            break;
        case 'c':
            pPars->fVerify ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9CFraig(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Ssc_PerformSweepingConstr( pAbc->pGia, pPars );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &cfraig [-WC <num>] [-acvh]\n" );
    Abc_Print( -2, "\t         performs combinational SAT sweeping under constraints\n" );
    Abc_Print( -2, "\t         which are present in the AIG or set manually using \"constr\"\n" );
    Abc_Print( -2, "\t         (constraints are listed as last POs and true when they are 0)\n" );
    Abc_Print( -2, "\t-W num : the number of simulation words [default = %d]\n", pPars->nWords );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-a     : toggle appending constraints to the result [default = %s]\n", pPars->fAppend? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle performing internal verification [default = %s]\n", pPars->fVerify? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Srm( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * pFileNameIn = NULL;
    char pFileName[10] = "gsrm.aig", pFileName2[10] = "gsyn.aig";
    Gia_Man_t * pTemp, * pAux;
    int c, fVerbose = 0;
    int fSynthesis = 0;
    int fSpeculate = 1;
    int fSkipSome = 0;
    int fDualOut = 0;
    int fComb = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Adrsfcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a file name.\n" );
                goto usage;
            }
            pFileNameIn = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'd':
            fDualOut ^= 1;
            break;
        case 'r':
            fSynthesis ^= 1;
            break;
        case 's':
            fSpeculate ^= 1;
            break;
        case 'f':
            fSkipSome ^= 1;
            break;
        case 'c':
            fComb ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Srm(): There is no AIG.\n" );
        return 1;
    }
    if ( fComb )
    {
        extern int Cec4_ManSimulateOnlyTest( Gia_Man_t * p, int fVerbose );
        int Result = Cec4_ManSimulateOnlyTest( pAbc->pGia, fVerbose );
        extern Gia_Man_t * Gia_ManCombSpecReduce( Gia_Man_t * p );
        pTemp = Gia_ManCombSpecReduce( pAbc->pGia );
        Abc_FrameUpdateGia( pAbc, pTemp );
        Result = 0;
        return 0;
    }
    sprintf(pFileName,  "gsrm%s.aig", fSpeculate? "" : "s" );
    sprintf(pFileName2, "gsyn%s.aig", fSpeculate? "" : "s" );
    pTemp = Gia_ManSpecReduce( pAbc->pGia, fDualOut, fSynthesis, fSpeculate, fSkipSome, fVerbose );
    if ( pTemp )
    {
        if ( fSpeculate )
        {
            pTemp = Gia_ManSeqStructSweep( pAux = pTemp, 1, 1, 0 );
            Gia_ManStop( pAux );
        }
        Gia_AigerWrite( pTemp, pFileNameIn ? pFileNameIn : pFileName, 0, 0, 0 );
        Abc_Print( 1, "Speculatively reduced model was written into file \"%s\".\n", pFileName );
        Gia_ManPrintStatsShort( pTemp );
        Gia_ManStop( pTemp );
    }
    if ( fSynthesis )
    {
        pTemp = Gia_ManEquivReduce( pAbc->pGia, 1, fDualOut, 0, fVerbose );
        if ( pTemp )
        {
            pTemp = Gia_ManSeqStructSweep( pAux = pTemp, 1, 1, 0 );
            Gia_ManStop( pAux );

            Gia_AigerWrite( pTemp, pFileName2, 0, 0, 0 );
            Abc_Print( 1, "Reduced original network was written into file \"%s\".\n", pFileName2 );
            Gia_ManPrintStatsShort( pTemp );
            Gia_ManStop( pTemp );
        }
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &srm [-A file] [-drsfcvh]\n" );
    Abc_Print( -2, "\t          derives or writes speculatively reduced model into file \"%s\"\n", pFileName );
    Abc_Print( -2, "\t-A file : file name for dumping speculative-reduced model [default = \"gsrm.aig\"]\n" );
    Abc_Print( -2, "\t-d      : toggle creating dual-output miter [default = %s]\n", fDualOut? "yes": "no" );
    Abc_Print( -2, "\t-r      : toggle writing reduced network for synthesis [default = %s]\n", fSynthesis? "yes": "no" );
    Abc_Print( -2, "\t-s      : toggle using speculation at the internal nodes [default = %s]\n", fSpeculate? "yes": "no" );
    Abc_Print( -2, "\t-f      : toggle filtering to remove redundant equivalences [default = %s]\n", fSkipSome? "yes": "no" );
    Abc_Print( -2, "\t-c      : toggle using combinational speculation [default = %s]\n", fComb? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Srm2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char pFileName[10], * pFileName1, * pFileName2;
    Gia_Man_t * pTemp, * pAux;
    int fLatchA = 0, fLatchB = 0;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "abvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fLatchA ^= 1;
            break;
        case 'b':
            fLatchB ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Srm2(): There is no AIG.\n" );
        return 1;
    }
    if ( pAbc->pGia->pReprs == NULL || pAbc->pGia->pNexts == NULL )
    {
        Abc_Print( -1, "Equivalences are not defined.\n" );
        return 0;
    }
    if ( argc != globalUtilOptind + 2 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Srm2(): Expecting two file names on the command line.\n" );
        return 1;
    }
    // get the input file name
    pFileName1 = argv[globalUtilOptind];
    pFileName2 = argv[globalUtilOptind+1];
    // create file name
    sprintf(pFileName,  "gsrm.aig" );
    pTemp = Gia_ManDup( pAbc->pGia );
    // copy equivalences
    pTemp->pReprs = ABC_ALLOC( Gia_Rpr_t, Gia_ManObjNum(pTemp) );
    memcpy( pTemp->pReprs, pAbc->pGia->pReprs, sizeof(Gia_Rpr_t) * Gia_ManObjNum(pTemp) );
    pTemp->pNexts = ABC_ALLOC( int, Gia_ManObjNum(pTemp) );
    memcpy( pTemp->pNexts, pAbc->pGia->pNexts, sizeof(int) * Gia_ManObjNum(pTemp) );
//Gia_ManPrintStats( pTemp, 0 );
    // filter the classes
    if ( !Gia_ManFilterEquivsForSpeculation( pTemp, pFileName1, pFileName2, fLatchA, fLatchB ) )
    {
        Gia_ManStop( pTemp );
        Abc_Print( -1, "Filtering equivalences has failed.\n" );
        return 1;
    }
//Gia_ManPrintStats( pTemp, 0 );
    pTemp = Gia_ManSpecReduce( pAux = pTemp, 0, 0, 1, 0, 0 );
    Gia_ManStop( pAux );
    if ( pTemp )
    {
        pTemp = Gia_ManSeqStructSweep( pAux = pTemp, 1, 1, 0 );
        Gia_ManStop( pAux );

        Gia_AigerWrite( pTemp, pFileName, 0, 0, 0 );
        Abc_Print( 1, "Speculatively reduced model was written into file \"%s\".\n", pFileName );
        Gia_ManPrintStatsShort( pTemp );
        Gia_ManStop( pTemp );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &srm2 [-abvh] <PartA_FileName> <PartB_FileName>\n" );
    Abc_Print( -2, "\t         writes speculatively reduced model into file \"%s\"\n", pFileName );
    Abc_Print( -2, "\t         only preserves equivalences across PartA and PartB\n" );
    Abc_Print( -2, "\t-a     : toggle using latches only in PartA [default = %s]\n", fLatchA? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle using latches only in PartB [default = %s]\n", fLatchB? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Filter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * pFileName1 = NULL, * pFileName2 = NULL;
    int fFlopsOnly = 0, fFlopsWith = 0, fUseRiDrivers = 0;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "fgivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'f':
            fFlopsOnly ^= 1;
            break;
        case 'g':
            fFlopsWith ^= 1;
            break;
        case 'i':
            fUseRiDrivers ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Srm2(): There is no AIG.\n" );
        return 1;
    }
    if ( pAbc->pGia->pReprs == NULL || pAbc->pGia->pNexts == NULL )
    {
        Abc_Print( -1, "Equivalences are not defined.\n" );
        return 0;
    }
    if ( argc != globalUtilOptind && argc != globalUtilOptind + 2 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Srm2(): Expecting two file names on the command line.\n" );
        return 1;
    }
    // filter using one of the choices
    if ( fFlopsOnly ^ fFlopsWith )
        Gia_ManFilterEquivsUsingLatches( pAbc->pGia, fFlopsOnly, fFlopsWith, fUseRiDrivers );
    // get the input file name
    if ( argc == globalUtilOptind + 2 )
    {
        pFileName1 = argv[globalUtilOptind];
        pFileName2 = argv[globalUtilOptind+1];
        if ( !Gia_ManFilterEquivsUsingParts( pAbc->pGia, pFileName1, pFileName2 ) )
        {
            Abc_Print( -1, "Filtering equivalences using PartA and PartB has failed.\n" );
            return 1;
        }
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &filter [-fgivh] <PartA_FileName> <PartB_FileName>\n" );
    Abc_Print( -2, "\t         performs filtering of equivalence classes\n" );
    Abc_Print( -2, "\t         (if Parts A/B are given, removes classes composed of one part)\n" );
    Abc_Print( -2, "\t-f     : toggle removing all elements except flops [default = %s]\n", fFlopsOnly? "yes": "no" );
    Abc_Print( -2, "\t-g     : toggle removing classes without flops [default = %s]\n", fFlopsWith? "yes": "no" );
    Abc_Print( -2, "\t-i     : toggle using flop inputs instead of flop outputs [default = %s]\n", fUseRiDrivers? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Reduce( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp, * pTemp2;
    int c, fVerbose = 0;
    int fUseAll = 0;
    int fDualOut = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "advh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'a':
            fUseAll ^= 1;
            break;
        case 'd':
            fDualOut ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Reduce(): There is no AIG.\n" );
        return 1;
    }
    if ( fUseAll )
    {
        pTemp = Gia_ManEquivReduce( pAbc->pGia, fUseAll, fDualOut, 0, fVerbose );
        pTemp = Gia_ManSeqStructSweep( pTemp2 = pTemp, 1, 1, 0 );
        Gia_ManStop( pTemp2 );
    }
    else
        pTemp = Gia_ManEquivReduceAndRemap( pAbc->pGia, 1, fDualOut );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &reduce [-advh]\n" );
    Abc_Print( -2, "\t         reduces the circuit using equivalence classes\n" );
    Abc_Print( -2, "\t-a     : toggle merging all equivalences [default = %s]\n", fUseAll? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle using dual-output merging [default = %s]\n", fDualOut? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9EquivMark( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManEquivMark( Gia_Man_t * p, char * pFileName, int fSkipSome, int fVerbose );
    char * pFileName;
    int c, fVerbose = 0;
    int fSkipSome = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "fvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'f':
            fSkipSome ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9EquivMark(): There is no AIG.\n" );
        return 1;
    }
    if ( argc != globalUtilOptind + 1 )
        goto usage;
    // get the input file name
    pFileName = argv[globalUtilOptind];
    // mark equivalences
    Gia_ManEquivMark( pAbc->pGia, pFileName, fSkipSome, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &equiv_mark [-fvh] <miter.aig>\n" );
    Abc_Print( -2, "\t              marks equivalences using an external miter\n" );
    Abc_Print( -2, "\t-f          : toggle the use of filtered equivalences [default = %s]\n", fSkipSome? "yes": "no" );
    Abc_Print( -2, "\t-v          : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h          : print the command usage\n");
    Abc_Print( -2, "\t<miter.aig> : file with the external miter to read\n");
    Abc_Print( -2, "\t              \n" );
    Abc_Print( -2, "\t              The external miter should be generated by &srm -s\n" );
    Abc_Print( -2, "\t              and (partially) solved by any verification engine(s).\n" );
    Abc_Print( -2, "\t              The external miter should have as many POs as\n" );
    Abc_Print( -2, "\t              the number of POs in the current AIG plus\n" );
    Abc_Print( -2, "\t              the number of equivalences in the current AIG.\n" );
    Abc_Print( -2, "\t              If some POs are proved, the corresponding equivs\n" );
    Abc_Print( -2, "\t              are marked as proved, to be reduced by &reduce.\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9EquivFilter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManEquivFilter( Gia_Man_t * p, Vec_Int_t * vPoIds, int fVerbose );
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9EquivFilter(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManEquivFilter( pAbc->pGia, pAbc->vAbcObjIds, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &equiv_filter [-vh]\n" );
    Abc_Print( -2, "\t              filters equivalence candidates after disproving some SRM outputs\n" );
    Abc_Print( -2, "\t              (the array of disproved outputs should be given as pAbc->vAbcObjIds)\n" );
    Abc_Print( -2, "\t-v          : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h          : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
static Vec_Ptr_t * Abc_GiaDupNameVec( Vec_Ptr_t * vNames )
{
    Vec_Ptr_t * vNew;
    char * pName;
    int i;
    if ( vNames == NULL )
        return NULL;
    vNew = Vec_PtrAlloc( Vec_PtrSize(vNames) );
    Vec_PtrForEachEntry( char *, vNames, pName, i )
        Vec_PtrPush( vNew, pName ? Abc_UtilStrsav(pName) : NULL );
    return vNew;
}

static Gia_Man_t * Abc_GiaReorderInputsByName( Gia_Man_t * pFirst, Gia_Man_t * pSecond )
{
    Vec_Int_t * vPiPerm;
    Gia_Man_t * pNew;
    char * pName1, * pName2;
    int * pUsed;
    int i, k, nPis, fDiff = 0;
    if ( pFirst == NULL || pSecond == NULL || pFirst->vNamesIn == NULL || pSecond->vNamesIn == NULL )
        return NULL;
    nPis = Gia_ManPiNum( pFirst );
    if ( nPis != Gia_ManPiNum(pSecond) )
        return NULL;
    if ( Vec_PtrSize(pFirst->vNamesIn) < nPis || Vec_PtrSize(pSecond->vNamesIn) < nPis )
        return NULL;
    vPiPerm = Vec_IntAlloc( nPis );
    pUsed = ABC_CALLOC( int, nPis );
    for ( i = 0; i < nPis; i++ )
    {
        pName1 = (char *)Vec_PtrEntry( pFirst->vNamesIn, i );
        if ( pName1 == NULL )
            break;
        for ( k = 0; k < nPis; k++ )
        {
            pName2 = (char *)Vec_PtrEntry( pSecond->vNamesIn, k );
            if ( pName2 && !pUsed[k] && !strcmp(pName1, pName2) )
                break;
        }
        if ( k == nPis )
            break;
        pUsed[k] = 1;
        Vec_IntPush( vPiPerm, k );
        fDiff |= (k != i);
    }
    ABC_FREE( pUsed );
    if ( i < nPis || !fDiff )
    {
        Vec_IntFree( vPiPerm );
        return NULL;
    }
    pNew = Gia_ManDupPerm( pSecond, vPiPerm );
    Vec_IntFree( vPiPerm );
    pNew->vNamesIn = Vec_PtrAlloc( Vec_PtrSize(pSecond->vNamesIn) );
    for ( i = 0; i < nPis; i++ )
    {
        pName1 = (char *)Vec_PtrEntry( pFirst->vNamesIn, i );
        Vec_PtrPush( pNew->vNamesIn, pName1 ? Abc_UtilStrsav(pName1) : NULL );
    }
    for ( i = nPis; i < Vec_PtrSize(pSecond->vNamesIn); i++ )
    {
        pName2 = (char *)Vec_PtrEntry( pSecond->vNamesIn, i );
        Vec_PtrPush( pNew->vNamesIn, pName2 ? Abc_UtilStrsav(pName2) : NULL );
    }
    pNew->vNamesOut = Abc_GiaDupNameVec( pSecond->vNamesOut );
    return pNew;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
static Gia_Man_t * Abc_ReadAigerOrVerilogFile( char * pFileName, char * pFileName2, char * pTopModule, char * pDefines, int * pAbc_ReadAigerOrVerilogFileStatus )
{
    FILE * pFile;
    Gia_Man_t * pGia;
    char * pTemp;
    char * pOrigFileName = NULL;
    int fVerilog, fSystemVerilog;

    *pAbc_ReadAigerOrVerilogFileStatus = 0;
    if ( pFileName == NULL )
        return NULL;

    // fix the wrong symbol
    for ( pTemp = pFileName; *pTemp; pTemp++ )
        if ( *pTemp == '>' )
            *pTemp = '\\';
    if ( (pFile = fopen( pFileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", pFileName );
        if ( (pFileName = Extra_FileGetSimilarName( pFileName, ".aig", NULL, NULL, NULL, NULL )) )
            Abc_Print( 1, "Did you mean \"%s\"?", pFileName );
        Abc_Print( 1, "\n" );
        *pAbc_ReadAigerOrVerilogFileStatus = 1;
        return NULL;
    }
    fclose( pFile );

    fSystemVerilog = Extra_FileIsType( pFileName, ".sv", NULL, NULL );
    fVerilog = fSystemVerilog || Extra_FileIsType( pFileName, ".v", NULL, NULL );
    if ( fVerilog )
    {
        extern Aig_Man_t * Abc_NtkToDar( Abc_Ntk_t * pNtk, int fExors, int fRegisters );
        Aig_Man_t * pAig = NULL;
        char pCommand[2000];
        int RetValue;
        int fSystemVerilog2 = pFileName2 && Extra_FileIsType( pFileName2, ".sv", NULL, NULL );
        // Save the original filename before changing it
        pOrigFileName = pFileName;
        snprintf( pCommand, sizeof(pCommand),
            "yosys -qp \"read_verilog %s%s %s%s%s%s; hierarchy %s%s; flatten; proc; opt; async2sync; opt; setundef -undriven -zero; techmap; memory -nomap; memory_map; dffunmap; opt_clean; opt_expr; %saigmap; write_aiger -symbols _temp_.aig\"",
            pDefines ? "-D" : "", pDefines ? pDefines : "",
            (fSystemVerilog || fSystemVerilog2) ? "-sv " : "", pFileName,
            pFileName2 ? " " : "", pFileName2 ? pFileName2 : "",
            pTopModule ? "-top "    : "-auto-top", pTopModule ? pTopModule : "",
            pFileName2 ? "delete t:\\$scopeinfo; " : "" );
#if defined(__wasm)
        RetValue = 1;
#else
        RetValue = system( pCommand );
#endif
        if ( RetValue != 0 )
        {
            Abc_Print( -1, "Yosys command failed: \"%s\".\n", pCommand );
            return NULL;
        }
        if ( pFileName2 )
        {
            Abc_Ntk_t * pNtk = Io_Read( "_temp_.aig", IO_FILE_AIGER, 1, 0 );
            if ( pNtk == NULL )
            {
                Abc_Print( -1, "Reading AIGER from file \"%s\" has failed.\n", "_temp_.aig" );
                return NULL;
            }
            pAig = Abc_NtkToDar( pNtk, 0, 1 );
            Abc_NtkDelete( pNtk );
            if ( pAig == NULL )
            {
                Abc_Print( -1, "Converting the AIGER network into an internal AIG has failed.\n" );
                return NULL;
            }
            pGia = Gia_ManFromAig( pAig );
            Aig_ManStop( pAig );
        }
        else
        {
            pFileName = "_temp_.aig";
            pGia = Gia_AigerRead( pFileName, 0, 0, 0 );
        }
    }
    else
        pGia = Gia_AigerRead( pFileName, 0, 0, 0 );
    if ( pGia == NULL )
    {
        Abc_Print( -1, "Reading AIGER from file \"%s\" has failed.\n", pFileName );
        return NULL;
    }

    // If we read from a Verilog file, keep the original filename as the spec
    if ( pOrigFileName != NULL )
    {
        ABC_FREE( pGia->pSpec );
        pGia->pSpec = Abc_UtilStrsav( pOrigFileName );
    }

    return pGia;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Cec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Cec_ManPrintCexSummary( Gia_Man_t * p, Abc_Cex_t * pCex, Cec_ParCec_t * pPars );
    Cec_ParCec_t ParsCec, * pPars = &ParsCec;
    FILE * pFile;
    Gia_Man_t * pGias[2] = {NULL, NULL}, * pMiter;
    char ** pArgvNew, * pTopModule = NULL, * pDefines = NULL, * pFileName2 = NULL;
    int c, nArgcNew, fUseSim = 0, fUseNewX = 0, fUseNewY = 0, fMiter = 0, fDualOutput = 0, fDumpMiter = 0, fSavedSpec = 0;
    int Abc_ReadAigerOrVerilogFileStatus = 0;
    Cec_ManCecSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CTMDFnmdbasxytvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a file name.\n" );
                goto usage;
            }
            pTopModule = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by defines.\n" );
                goto usage;
            }
            pDefines = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a file name.\n" );
                goto usage;
            }
            pFileName2 = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'n':
            pPars->fNaive ^= 1;
            break;
        case 'm':
            fMiter ^= 1;
            break;
        case 'd':
            fDualOutput ^= 1;
            break;
        case 'b':
            fSavedSpec ^= 1;
            break;
        case 'a':
            fDumpMiter ^= 1;
            break;
        case 's':
            pPars->fSilent ^= 1;
            break;
        case 'x':
            fUseNewX ^= 1;
            break;
        case 'y':
            fUseNewY ^= 1;
            break;
        case 't':
            fUseSim ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia && pAbc->pGia->nXors )
    {
        Abc_Print( 0, "It looks like the current AIG is derived by &st -m.  Such AIG contains XOR gates and cannot be verified before &st is applied.\n" );
        return 1;
    }
    if ( pFileName2 )
    {
        if ( (pFile = fopen( pFileName2, "r" )) == NULL )
        {
            Abc_Print( -1, "Cannot open input file \"%s\".\n", pFileName2 );
            return 1;
        }
        fclose( pFile );
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( fMiter )
    {
        if ( pAbc->pGia == NULL || nArgcNew != 0 )
        {
            Abc_Print( -1, "Abc_CommandAbc9Cec(): A miter cannot be given as an argument of command &cec and should be entered using &r.\n" );
            return 1;
        }
        if ( fDualOutput )
        {
            if ( Gia_ManPoNum(pAbc->pGia) & 1 )
            {
                Abc_Print( -1, "The dual-output miter should have an even number of outputs.\n" );
                return 1;
            }
            if ( !pPars->fSilent )
            Abc_Print( 1, "Assuming the current network is a double-output miter.\n" );
            pAbc->Status = Cec_ManVerify( pAbc->pGia, pPars );
        }
        else
        {
            abctime clk = Abc_Clock();
            Gia_Obj_t * pObj; int i;
            if ( !pPars->fSilent )
            Abc_Print( 1, "Assuming the current network is a single-output miter.\n" );
            if ( fUseSim )
            {
                abctime clk = Abc_Clock();
                extern int Gia_ManCheckSimEquiv( Gia_Man_t * p, int fVerbose );
                int Status = Gia_ManCheckSimEquiv( pAbc->pGia, pPars->fVerbose );
                if ( Status == 1 )
                    Abc_Print( 1, "Networks are equivalent.  " );
                else if ( Status == 0 )
                    Abc_Print( 1, "Networks are NOT equivalent.  " );
                else
                    Abc_Print( 1, "Networks are UNDECIDED.  " );
                Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
                return 0;
            }
            // handle the case when the output is disproved by an all-0 primary input pattern
            ABC_FREE( pAbc->pGia->pCexComb );
            Gia_ManSetPhase( pAbc->pGia );
            Gia_ManForEachCo( pAbc->pGia, pObj, i )
                if ( pObj->fPhase )
                {
                    pAbc->pGia->pCexComb = Abc_CexAlloc( 0, Gia_ManCiNum(pAbc->pGia), 1 );
                    if ( !pPars->fSilent )
                    {
                        Abc_Print( 1, "Networks are NOT EQUIVALENT. Output %d trivially differs (different phase).  ", i );
                        Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
                    }
                    pAbc->Status = 0;// satisfiable
                    break;
                }
            if ( pAbc->pGia->pCexComb == NULL )
            {
                Gia_Man_t * pTemp = Gia_ManDemiterToDual( pAbc->pGia );
                pAbc->Status = Cec_ManVerify( pTemp, pPars );
                ABC_SWAP( Abc_Cex_t *, pAbc->pGia->pCexComb, pTemp->pCexComb );
                Gia_ManStop( pTemp );
            }
        }
        Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexComb );
        return 0;
    }
    if ( nArgcNew > 2 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Cec(): Wrong number of command-line arguments.\n" );
        return 1;
    }
    if ( nArgcNew == 2 )
    {
        char * pFileNames[2] = { pArgvNew[0], pArgvNew[1] };
        int n;
        for ( n = 0; n < 2; n++ )
        {
            pGias[n] = Abc_ReadAigerOrVerilogFile( pFileNames[n], pFileName2, pTopModule, pDefines, &Abc_ReadAigerOrVerilogFileStatus );
            if ( pGias[n] == NULL )
                return Abc_ReadAigerOrVerilogFileStatus;
        }
    }
    else if ( fSavedSpec )
    {
        if ( pAbc->pGiaSaved == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9Cec(): There is no saved specification.\n" );
            return 1;
        }
        pGias[0] = pAbc->pGia;
        pGias[1] = pAbc->pGiaSaved;
    }
    else
    {
        char * FileName;
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9Cec(): There is no current AIG.\n" );
            return 1;
        }
        pGias[0] = pAbc->pGia;
        if ( nArgcNew == 1 )
            FileName = pArgvNew[0];
        else
        {
            assert( nArgcNew == 0 );
            if ( pAbc->pGia->pSpec == NULL )
            {
                Abc_Print( -1, "File name is not given on the command line.\n" );
                return 1;
            }
            FileName = pAbc->pGia->pSpec;
        }
        pGias[1] = Abc_ReadAigerOrVerilogFile( FileName, pFileName2, pTopModule, pDefines, &Abc_ReadAigerOrVerilogFileStatus );
        if ( pGias[1] == NULL )
            return Abc_ReadAigerOrVerilogFileStatus;
    }
    if ( pGias[0] && pGias[1] )
    {
        Gia_Man_t * pTemp = Abc_GiaReorderInputsByName( pGias[0], pGias[1] );
        if ( pTemp )
        {
            if ( pPars->fVerbose )
                Abc_Print( 1, "Reordered primary inputs of the second network using input names.\n" );
            if ( pGias[1] != pAbc->pGia && pGias[1] != pAbc->pGiaSaved )
                Gia_ManStop( pGias[1] );
            pGias[1] = pTemp;
        }
    }
    pPars->pNameSpec = pGias[0] ? (pGias[0]->pSpec ? pGias[0]->pSpec : pGias[0]->pName) : NULL;
    pPars->pNameImpl = pGias[1] ? (pGias[1]->pSpec ? pGias[1]->pSpec : pGias[1]->pName) : NULL;
    pPars->vNamesIn  = pGias[0] ? pGias[0]->vNamesIn : NULL;
    // compute the miter
    if ( Gia_ManCiNum(pGias[0]) < 6 )
    {
        Gia_Man_t * pGias0 = Gia_ManDup( pGias[0] );
        Gia_Man_t * pGias1 = Gia_ManDup( pGias[1] );
        for ( c = Gia_ManCiNum(pGias[0]); c < 6; c++ )
        {
            Gia_ManAppendCi(pGias0);
            Gia_ManAppendCi(pGias1);
        }
        pMiter = Gia_ManMiter( pGias0, pGias1, 0, !fUseNewX && !fUseNewY, 0, 0, pPars->fVerbose );
        Gia_ManStop( pGias0 );
        Gia_ManStop( pGias1 );
    }
    else
        pMiter = Gia_ManMiter( pGias[0], pGias[1], 0, !fUseNewX && !fUseNewY, 0, 0, pPars->fVerbose );

    if ( pMiter )
    {
        if ( fDumpMiter )
        {
            Abc_Print( 0, "The verification miter is written into file \"%s\".\n", "cec_miter.aig" );
            Gia_AigerWrite( pMiter, "cec_miter.aig", 0, 0, 0 );
        }
        if ( pGias[0]->vSimsPi )
        {
            pMiter->vSimsPi = Vec_WrdDup(pGias[0]->vSimsPi); 
            pMiter->nSimWords = pGias[0]->nSimWords;
        }
        if ( fUseSim && Gia_ManCiNum(pMiter) > 40 )
        {
            Abc_Print( -1, "This type of CEC can only be applied to AIGs with no more than 40 inputs.\n" );
            return 0;
        }
        if ( fUseSim )
        {
            abctime clk = Abc_Clock();
            extern int Gia_ManCheckSimEquiv( Gia_Man_t * p, int fVerbose );
            int Status = Gia_ManCheckSimEquiv( pMiter, pPars->fVerbose );
            if ( Status == 1 )
            {
                Abc_Print( 1, "Networks are equivalent.  " );
                Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
            }
            else if ( Status == 0 )
            {
                Abc_Print( 1, "Networks are NOT equivalent.  " );
                Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
                {
                    Cec_ParCec_t ParsTemp = *pPars;
                    ParsTemp.fSilent = 1;
                    Cec_ManVerify( pMiter, &ParsTemp );
                    if ( pMiter->pCexComb )
                    {
                        Cec_ManPrintCexSummary( pMiter, pMiter->pCexComb, pPars );
                        pGias[0]->pCexComb = pMiter->pCexComb; 
                        pMiter->pCexComb = NULL;
                        Abc_FrameReplaceCex( pAbc, &pGias[0]->pCexComb );
                    }
                }
            }
            else
            {
                Abc_Print( 1, "Networks are UNDECIDED.  " );
                Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
            }
        }
        else if ( fUseNewX )
        {
            abctime clk = Abc_Clock();
            extern Gia_Man_t * Cec4_ManSimulateTest3( Gia_Man_t * p, int nBTLimit, int fVerbose );
            Gia_Man_t * pNew = Cec4_ManSimulateTest3( pMiter, pPars->nBTLimit, pPars->fVerbose );
            if ( Gia_ManAndNum(pNew) == 0 )
                Abc_Print( 1, "Networks are equivalent.  " );
            else
                Abc_Print( 1, "Networks are UNDECIDED.  " );
            Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
            Gia_ManStop( pNew );
        }
        else if ( fUseNewY )
        {
            abctime clk = Abc_Clock();
            extern Gia_Man_t * Cec5_ManSimulateTest3( Gia_Man_t * p, int nBTLimit, int fVerbose );
            Gia_Man_t * pNew = Cec5_ManSimulateTest3( pMiter, pPars->nBTLimit, pPars->fVerbose );
            if ( Gia_ManAndNum(pNew) == 0 )
                Abc_Print( 1, "Networks are equivalent.  " );
            else
                Abc_Print( 1, "Networks are UNDECIDED.  " );
            Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
            Gia_ManStop( pNew );
        }
        else
        {
            pAbc->Status = Cec_ManVerify( pMiter, pPars );
            Abc_FrameReplaceCex( pAbc, &pGias[0]->pCexComb );
        }
        Gia_ManStop( pMiter );
    }
    if ( pGias[0] != pAbc->pGia )
        Gia_ManStop( pGias[0] );
    if ( pGias[1] != pAbc->pGiaSaved )
        Gia_ManStop( pGias[1] );
    return 0;

usage:
    Abc_Print( -2, "usage: &cec [-CT num] [-M str] [-D str] [-F str] [-nmdbasxytvwh]\n" );
    Abc_Print( -2, "\t         new combinational equivalence checker\n" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-M str : top module name if Verilog file(s) are used [default = \"not used\"]\n" );
    Abc_Print( -2, "\t-D str : defines to be used by Yosys for Verilog files [default = \"not used\"]\n" );
    Abc_Print( -2, "\t-F str : second Verilog/SystemVerilog file read together with each Verilog input [default = \"not used\"]\n" );
    Abc_Print( -2, "\t-n     : toggle using naive SAT-based checking [default = %s]\n", pPars->fNaive? "yes":"no");
    Abc_Print( -2, "\t-m     : toggle miter vs. two circuits [default = %s]\n", fMiter? "miter":"two circuits");
    Abc_Print( -2, "\t-d     : toggle using dual output miter [default = %s]\n", fDualOutput? "yes":"no");
    Abc_Print( -2, "\t-b     : toggle using saved specification [default = %s]\n", fSavedSpec? "yes":"no");
    Abc_Print( -2, "\t-a     : toggle writing dual-output miter [default = %s]\n", fDumpMiter? "yes":"no");
    Abc_Print( -2, "\t-s     : toggle silent operation [default = %s]\n", pPars->fSilent ? "yes":"no");
    Abc_Print( -2, "\t-x     : toggle using new solver [default = %s]\n", fUseNewX? "yes":"no");
    Abc_Print( -2, "\t-y     : toggle using new solver [default = %s]\n", fUseNewY? "yes":"no");
    Abc_Print( -2, "\t-t     : toggle using simulation [default = %s]\n", fUseSim? "yes":"no");
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", pPars->fVerbose? "yes":"no");
    Abc_Print( -2, "\t-w     : toggle printing SAT solver statistics [default = %s]\n", pPars->fVeryVerbose? "yes":"no");
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ICec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Cec_ParCec_t ParsCec, * pPars = &ParsCec;
    FILE * pFile;
    Gia_Man_t * pGias[2] = {NULL, NULL}, * pMiter;
    char ** pArgvNew;
    int c, nArgcNew, fUseNew = 0, fDumpMiter = 0;
    Cec_ManCecSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CTaxvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 'a':
            fDumpMiter ^= 1;
            break;
        case 'x':
            fUseNew ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew > 2 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Cec(): Wrong number of command-line arguments.\n" );
        return 1;
    }
    if ( nArgcNew == 2 )
    {
        char * pFileNames[2] = { pArgvNew[0], pArgvNew[1] }, * pTemp;
        int n;
        for ( n = 0; n < 2; n++ )
        {
            // fix the wrong symbol
            for ( pTemp = pFileNames[n]; *pTemp; pTemp++ )
                if ( *pTemp == '>' )
                    *pTemp = '\\';
            if ( (pFile = fopen( pFileNames[n], "r" )) == NULL )
            {
                Abc_Print( -1, "Cannot open input file \"%s\". ", pFileNames[n] );
                if ( (pFileNames[n] = Extra_FileGetSimilarName( pFileNames[n], ".aig", NULL, NULL, NULL, NULL )) )
                    Abc_Print( 1, "Did you mean \"%s\"?", pFileNames[n] );
                Abc_Print( 1, "\n" );
                return 1;
            }
            fclose( pFile );
            pGias[n] = Gia_AigerRead( pFileNames[n], 0, 0, 0 );
            if ( pGias[n] == NULL )
            {
                Abc_Print( -1, "Reading AIGER from file \"%s\" has failed.\n", pFileNames[n] );
                return 0;
            }
        }
    }
    else
    {
        char * FileName, * pTemp;
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9Cec(): There is no current AIG.\n" );
            return 1;
        }
        pGias[0] = pAbc->pGia;
        if ( nArgcNew == 1 )
            FileName = pArgvNew[0];
        else
        {
            assert( nArgcNew == 0 );
            if ( pAbc->pGia->pSpec == NULL )
            {
                Abc_Print( -1, "File name is not given on the command line.\n" );
                return 1;
            }
            FileName = pAbc->pGia->pSpec;
        }
        // fix the wrong symbol
        for ( pTemp = FileName; *pTemp; pTemp++ )
            if ( *pTemp == '>' )
                *pTemp = '\\';
        if ( (pFile = fopen( FileName, "r" )) == NULL )
        {
            Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
            if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", NULL, NULL, NULL, NULL )) )
                Abc_Print( 1, "Did you mean \"%s\"?", FileName );
            Abc_Print( 1, "\n" );
            return 1;
        }
        fclose( pFile );
        pGias[1] = Gia_AigerRead( FileName, 0, 0, 0 );
        if ( pGias[1] == NULL )
        {
            Abc_Print( -1, "Reading AIGER has failed.\n" );
            return 0;
        }
    }
    // compute the miter
    pMiter = Gia_ManMiterInverse( pGias[0], pGias[1], !fUseNew, pPars->fVerbose );
    if ( pMiter )
    {
        if ( fDumpMiter )
        {
            Abc_Print( 0, "The verification miter is written into file \"%s\".\n", "cec_miter.aig" );
            Gia_AigerWrite( pMiter, "cec_miter.aig", 0, 0, 0 );
        }
        if ( fUseNew )
        {
            abctime clk = Abc_Clock();
            extern Gia_Man_t * Cec4_ManSimulateTest3( Gia_Man_t * p, int nBTLimit, int fVerbose );
            Gia_Man_t * pNew = Cec4_ManSimulateTest3( pMiter, pPars->nBTLimit, pPars->fVerbose );
            if ( Gia_ManAndNum(pNew) == 0 )
                Abc_Print( 1, "Networks are equivalent.  " );
            else
                Abc_Print( 1, "Networks are UNDECIDED.  " );
            Abc_PrintTime( 1, "Time", Abc_Clock() - clk );
            Gia_ManStop( pNew );
        }
        else
        {
            pAbc->Status = Cec_ManVerify( pMiter, pPars );
            Abc_FrameReplaceCex( pAbc, &pGias[0]->pCexComb );
        }
        Gia_ManStop( pMiter );
    }
    if ( pGias[0] != pAbc->pGia )
        Gia_ManStop( pGias[0] );
    Gia_ManStop( pGias[1] );
    return 0;

usage:
    Abc_Print( -2, "usage: &icec [-CT num] [-axvwh]\n" );
    Abc_Print( -2, "\t         combinational equivalence checker for inverse circuits\n" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-a     : toggle writing the miter [default = %s]\n", fDumpMiter? "yes":"no");
    Abc_Print( -2, "\t-x     : toggle using new solver [default = %s]\n", fUseNew? "yes":"no");
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", pPars->fVerbose? "yes":"no");
    Abc_Print( -2, "\t-w     : toggle printing SAT solver statistics [default = %s]\n", pPars->fVeryVerbose? "yes":"no");
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Verify( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char * pFileSpec = NULL;
    int c, nBTLimit = 1000, nTimeLim = 0, fSeq = 0, fObjIdMap = 0, fDumpFiles = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CTsydvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimit < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeLim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeLim < 0 )
                goto usage;
            break;
        case 's':
            fSeq ^= 1;
            break;
        case 'y':
            fObjIdMap ^= 1;
            break;
        case 'd':
            fDumpFiles ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
    {
        pFileSpec = argv[globalUtilOptind];
        Extra_FileNameCorrectPath( pFileSpec );
        printf( "Taking spec from file \"%s\".\n", pFileSpec );
    }
    Gia_ManVerifyWithBoxes( pAbc->pGia, nBTLimit, nTimeLim, fSeq, fObjIdMap, fDumpFiles, fVerbose, pFileSpec );
    return 0;

usage:
    Abc_Print( -2, "usage: &verify [-CT num] [-sydvh] <file>\n" );
    Abc_Print( -2, "\t         performs verification of combinational design\n" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n",  nTimeLim );
    Abc_Print( -2, "\t-s     : toggle using sequential verification [default = %s]\n",  fSeq? "yes":"no");
    Abc_Print( -2, "\t-y     : toggle producing object ID mapping (CEC only) [default = %s]\n", fObjIdMap? "yes":"no");
    Abc_Print( -2, "\t-d     : toggle dumping AIGs to be compared [default = %s]\n",    fDumpFiles? "yes":"no");
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n",                 fVerbose? "yes":"no");
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : optional file name with the spec [default = not used]\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Sweep( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    Dch_Pars_t Pars, * pPars = &Pars;
    int c;
    Dch_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WCStvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSatVarMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSatVarMax < 0 )
                goto usage;
            break;
        case 't':
            pPars->fSimulateTfo ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Sweep(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManBoxNum(pAbc->pGia) && pAbc->pGia->pAigExtra == NULL )
    {
        printf( "Timing manager is given but there is no GIA of boxes.\n" );
        return 0;
    }
    if ( Gia_ManBoxNum(pAbc->pGia) )
        pTemp = Gia_ManSweepWithBoxes( pAbc->pGia, pPars, NULL, 0, 0, pPars->fVerbose, 0 );
    else
        pTemp = Gia_ManFraigSweepSimple( pAbc->pGia, pPars );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &sweep [-WCS num] [-tvh]\n" );
    Abc_Print( -2, "\t         performs SAT sweeping for AIG with boxes\n" );
    Abc_Print( -2, "\t-W num : the max number of simulation words [default = %d]\n", pPars->nWords );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-S num : the max number of SAT variables [default = %d]\n", pPars->nSatVarMax );
    Abc_Print( -2, "\t-t     : toggle simulation of the TFO classes [default = %s]\n", pPars->fSimulateTfo? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Force( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int nIters     = 20;
    int fClustered =  1;
    int fVerbose   =  1;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Icvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'c':
            fClustered ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Force(): There is no AIG.\n" );
        return 1;
    }
    For_ManExperiment( pAbc->pGia, nIters, fClustered, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &force [-I <num>] [-cvh]\n" );
    Abc_Print( -2, "\t         one-dimensional placement algorithm FORCE introduced by\n" );
    Abc_Print( -2, "\t         F. A. Aloul, I. L. Markov, and K. A. Sakallah (GLSVLSI�03).\n" );
    Abc_Print( -2, "\t-I num : the number of refinement iterations [default = %d]\n", nIters );
    Abc_Print( -2, "\t-c     : toggle clustered representation [default = %s]\n", fClustered? "yes":"no");
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes":"no");
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Embed( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Emb_Par_t Pars, * pPars = &Pars;
    int c;
    pPars->nDims      = 30;
    pPars->nIters     = 10;
    pPars->nSols      =  2;
    pPars->fRefine    =  0;
    pPars->fCluster   =  0;
    pPars->fDump      =  0;
    pPars->fDumpLarge =  0;
    pPars->fShowImage =  0;
    pPars->fVerbose   =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "DIrcdlsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nDims = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nDims < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIters < 0 )
                goto usage;
            break;
        case 'r':
            pPars->fRefine ^= 1;
            break;
        case 'c':
            pPars->fCluster ^= 1;
            break;
        case 'd':
            pPars->fDump ^= 1;
            break;
        case 'l':
            pPars->fDumpLarge ^= 1;
            break;
        case 's':
            pPars->fShowImage ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Embed(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManSolveProblem( pAbc->pGia, pPars );
    return 0;

usage:
    Abc_Print( -2, "usage: &embed [-DI <num>] [-rdlscvh]\n" );
    Abc_Print( -2, "\t         fast placement based on high-dimensional embedding from\n" );
    Abc_Print( -2, "\t         D. Harel and Y. Koren, \"Graph drawing by high-dimensional\n" );
    Abc_Print( -2, "\t         embedding\", J. Graph Algs & Apps, 2004, Vol 8(2), pp. 195-217\n" );
    Abc_Print( -2, "\t-D num : the number of dimensions for embedding [default = %d]\n", pPars->nDims );
    Abc_Print( -2, "\t-I num : the number of refinement iterations [default = %d]\n", pPars->nIters );
    Abc_Print( -2, "\t-r     : toggle the use of refinement [default = %s]\n", pPars->fRefine? "yes":"no");
    Abc_Print( -2, "\t-c     : toggle clustered representation [default = %s]\n", pPars->fCluster? "yes":"no");
    Abc_Print( -2, "\t-d     : toggle dumping placement into a Gnuplot file [default = %s]\n", pPars->fDump? "yes":"no");
    Abc_Print( -2, "\t-l     : toggle dumping Gnuplot for large placement [default = %s]\n", pPars->fDumpLarge? "yes":"no");
    Abc_Print( -2, "\t-s     : toggle showing image if Gnuplot is installed [default = %s]\n", pPars->fShowImage? "yes":"no");
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", pPars->fVerbose? "yes":"no");
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Sopb( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int nLevelMax   = 0;
    int nTimeWindow = 0;
    int nCutNum     = 8;
    int nRelaxRatio = 0;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "LWCRvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevelMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevelMax < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeWindow = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeWindow < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutNum < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRelaxRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRelaxRatio < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Sopb(): There is no AIG.\n" );
        return 1;
    }
    if ( nLevelMax || nTimeWindow )
        pTemp = Gia_ManPerformSopBalanceWin( pAbc->pGia, nLevelMax, nTimeWindow, nCutNum, nRelaxRatio, fVerbose );
    else
        pTemp = Gia_ManPerformSopBalance( pAbc->pGia, nCutNum, nRelaxRatio, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &sopb [-LWCR num] [-vh]\n" );
    Abc_Print( -2, "\t         performs SOP balancing\n" );
    Abc_Print( -2, "\t-L num : optimize paths above this level [default = %d]\n", nLevelMax );
    Abc_Print( -2, "\t-W num : optimize paths falling into this window [default = %d]\n", nTimeWindow );
    Abc_Print( -2, "\t-C num : the number of cuts at a node [default = %d]\n", nCutNum );
    Abc_Print( -2, "\t-R num : the delay relaxation ratio (num >= 0) [default = %d]\n", nRelaxRatio );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Dsdb( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int nLevelMax   = 0;
    int nTimeWindow = 0;
    int nLutSize    = 6;
    int nCutNum     = 8;
    int nRelaxRatio = 0;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "LWKCRvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevelMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevelMax < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeWindow = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeWindow < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
         case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutNum < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRelaxRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRelaxRatio < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Dsdb(): There is no AIG.\n" );
        return 1;
    }
    if ( nLutSize > DAU_MAX_VAR )
    {
        printf( "Abc_CommandAbc9Dsdb(): Size of the required DSD manager (%d) exceeds the precompiled limit (%d) (change parameter DAU_MAX_VAR).\n", nLutSize, DAU_MAX_VAR );
        return 0;
    }
    if ( Abc_FrameReadManDsd2() && nLutSize > If_DsdManVarNum((If_DsdMan_t*)Abc_FrameReadManDsd2()) )
    {
        printf( "Abc_CommandAbc9Dsdb(): Incompatible size of the DSD manager (run \"dsd_free -b\").\n" );
        return 0;
    }
    if ( nLevelMax || nTimeWindow )
        pTemp = Gia_ManPerformDsdBalanceWin( pAbc->pGia, nLevelMax, nTimeWindow, nLutSize, nCutNum, nRelaxRatio, fVerbose );
    else
        pTemp = Gia_ManPerformDsdBalance( pAbc->pGia, nLutSize, nCutNum, nRelaxRatio, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &dsdb [-LWKCR num] [-vh]\n" );
    Abc_Print( -2, "\t         performs DSD balancing\n" );
    Abc_Print( -2, "\t-L num : optimize paths above this level [default = %d]\n", nLevelMax );
    Abc_Print( -2, "\t-W num : optimize paths falling into this window [default = %d]\n", nTimeWindow );
    Abc_Print( -2, "\t-K num : the number of LUT inputs (LUT size) [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-C num : the number of cuts at a node [default = %d]\n", nCutNum );
    Abc_Print( -2, "\t-R num : the delay relaxation ratio (num >= 0) [default = %d]\n", nRelaxRatio );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Flow( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManPerformFlow( int fIsMapped, int nAnds, int nLevels, int nLutSize, int nCutNum, int fMinAve, int fUseMfs, int fVerbose );
    int nLutSize    =  6;
    int nCutNum     =  8;
    int fMinAve     =  0;
    int fUseMfs     =  0;
    int c, fVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCtmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
         case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutNum < 0 )
                goto usage;
            break;
        case 't':
            fMinAve ^= 1;
            break;
        case 'm':
            fUseMfs ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Flow(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManPerformFlow( Gia_ManHasMapping(pAbc->pGia), Gia_ManAndNum(pAbc->pGia), Gia_ManLevelNum(pAbc->pGia), nLutSize, nCutNum, fMinAve, fUseMfs, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &flow [-KC num] [-tmvh]\n" );
    Abc_Print( -2, "\t         integration optimization and mapping flow\n" );
    Abc_Print( -2, "\t-K num : the number of LUT inputs (LUT size) [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-C num : the number of cuts at a node [default = %d]\n", nCutNum );
    Abc_Print( -2, "\t-t     : toggle minimizing average rather than max delay [default = %s]\n", fMinAve? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle using \"mfs2\" in the script [default = %s]\n", fUseMfs? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Flow2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManPerformFlow2( int fIsMapped, int nAnds, int nLevels, int nLutSize, int nCutNum, int fBalance, int fMinAve, int fUseMfs, int fVerbose );
    int nLutSize    =  6;
    int nCutNum     =  8;
    int fBalance    =  0;
    int fMinAve     =  0;
    int fUseMfs     =  0;
    int c, fVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCbtmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
         case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutNum < 0 )
                goto usage;
            break;
        case 'b':
            fBalance ^= 1;
            break;
        case 't':
            fMinAve ^= 1;
            break;
        case 'm':
            fUseMfs ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Flow2(): There is no AIG.\n" );
        return 1;
    }
    Gia_ManPerformFlow2( Gia_ManHasMapping(pAbc->pGia), Gia_ManAndNum(pAbc->pGia), Gia_ManLevelNum(pAbc->pGia), nLutSize, nCutNum, fBalance, fMinAve, fUseMfs, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &flow2 [-KC num] [-btmvh]\n" );
    Abc_Print( -2, "\t         integration optimization and mapping flow\n" );
    Abc_Print( -2, "\t-K num : the number of LUT inputs (LUT size) [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-C num : the number of cuts at a node [default = %d]\n", nCutNum );
    Abc_Print( -2, "\t-b     : toggle using SOP balancing during synthesis [default = %s]\n", fBalance? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle minimizing average (not maximum) level [default = %s]\n", fMinAve? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle using \"mfs2\" in the script [default = %s]\n", fUseMfs? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Flow3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManPerformFlow3( int nLutSize, int nCutNum, int fBalance, int fMinAve, int fUseMfs, int fUseLutLib, int fVerbose );
    int nLutSize    =  6;
    int nCutNum     =  8;
    int fBalance    =  0;
    int fMinAve     =  0;
    int fUseMfs     =  1;
    int fUseLutLib  =  0;
    int c, fVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCbtmlvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
         case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutNum < 0 )
                goto usage;
            break;
        case 'b':
            fBalance ^= 1;
            break;
        case 't':
            fMinAve ^= 1;
            break;
        case 'm':
            fUseMfs ^= 1;
            break;
        case 'l':
            fUseLutLib ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Flow3(): There is no AIG.\n" );
        return 1;
    }
    if ( fUseLutLib && Abc_FrameReadLibLut() == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Flow3(): Please enter LUT library using \'read_lut\'.\n" );
        return 1;
    }
    Gia_ManPerformFlow3( nLutSize, nCutNum, fBalance, fMinAve, fUseMfs, fUseLutLib, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &flow3 [-KC num] [-btmlvh]\n" );
    Abc_Print( -2, "\t         integration optimization and mapping flow\n" );
    Abc_Print( -2, "\t-K num : the number of LUT inputs (LUT size) [default = %d]\n",           nLutSize );
    Abc_Print( -2, "\t-C num : the number of cuts at a node [default = %d]\n",                  nCutNum );
    Abc_Print( -2, "\t-b     : toggle using SOP balancing during synthesis [default = %s]\n",   fBalance? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle minimizing average (not maximum) level [default = %s]\n", fMinAve? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle using \"mfs2\" in the script [default = %s]\n",           fUseMfs? "yes": "no" );
    Abc_Print( -2, "\t-l     : toggle using previously entered LUT library [default = %s]\n",   fUseLutLib? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",           fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9If( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char Buffer[200];
    char LutSize[200];
    Gia_Man_t * pNew;
    If_Par_t Pars, * pPars = &Pars;
    int c;
    // set defaults
    Gia_ManSetIfParsDefault( pPars );
    if ( Abc_FrameReadLibLut() == NULL )
    {
        Abc_Print( -1, "LUT library is not given. Using default LUT library.\n" );
        Abc_FrameSetLibLut( If_LibLutSetSimple( 6 ) );
    }
    pPars->pLutLib = (If_LibLut_t *)Abc_FrameReadLibLut();
    pPars->pCellLib = (If_LibCell_t *)Abc_FrameReadLibCell();
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCFAGRDEWSJTXYZMqalepmrsdbgxyofuijkztncvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 0 )
                goto usage;
            // if the LUT size is specified, disable library
            pPars->pLutLib = NULL;
            pPars->pCellLib = NULL;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nCutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutsMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nFlowIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFlowIters < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nAreaIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nAreaIters < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by a positive integer no less than 3.\n" );
                goto usage;
            }
            pPars->nGateSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nGateSize < 2 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nRelaxRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRelaxRatio < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by a positive integer 0,1,or 2.\n" );
                goto usage;
            }
            pPars->nStructType = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nStructType < 0 || pPars->nStructType > 2 )
                goto usage;
            break;
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by a positive integer 0,1,or 2.\n" );
                goto usage;
            }
            pPars->nAndDelay = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nAndArea < 0 )
                goto usage;
            break;
        case 'Y':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Y\" should be followed by a positive integer 0,1,or 2.\n" );
                goto usage;
            }
            pPars->nAndArea = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nAndDelay < 0 )
                goto usage;
            break;
        case 'M':
        {
            int Value;
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by 0 or 1.\n" );
                goto usage;
            }
            Value = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Value < 0 || Value > 1 )
                goto usage;
            pPars->fDelayOptCell = Value;
            break;
        }
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->DelayTarget = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelayTarget <= 0.0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->Epsilon = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->Epsilon < 0.0 || pPars->Epsilon > 1.0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->WireDelay = (float)atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->WireDelay < 0.0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by string.\n" );
                goto usage;
            }
            pPars->pLutStruct = argv[globalUtilOptind];
            globalUtilOptind++;
            if ( strlen(pPars->pLutStruct) != 2 && strlen(pPars->pLutStruct) != 3 )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a 2- or 3-char string (e.g. \"44\" or \"555\").\n" );
                goto usage;
            }
            break;
        case 'J':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by string.\n" );
                goto usage;
            }
            pPars->pLutStruct = argv[globalUtilOptind];
            pPars->fEnableStructN = 1;
            globalUtilOptind++;
            if ( strlen(pPars->pLutStruct) != 2 )
            {
                Abc_Print( -1, "Command line switch \"-J\" should be followed by a 2-char string (e.g. \"44\" or \"55\").\n" );
                goto usage;
            }
            break;
        case 'Z':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Z\" should be followed by a positive integer 3, 4, 5, or 6.\n" );
                goto usage;
            }
            pPars->nLutDecSize = atoi(argv[globalUtilOptind]);
            pPars->fUserLutDec = 1;
            globalUtilOptind++;
            if ( pPars->nLutDecSize < 3 || pPars->nLutDecSize > 6 )
                goto usage;
            break;
        case 'q':
            pPars->fPreprocess ^= 1;
            break;
        case 'a':
            pPars->fArea ^= 1;
            break;
        case 'r':
            pPars->fExpRed ^= 1;
            break;
        case 'l':
            pPars->fLut6Filter ^= 1;
            break;
        case 'e':
            pPars->fEdge ^= 1;
            break;
        case 'p':
            pPars->fPower ^= 1;
            break;
        case 'm':
            pPars->fCutMin ^= 1;
            break;
        case 's':
            pPars->fDelayOptLut ^= 1;
            break;
        case 'd':
            pPars->fUse34Spec ^= 1;
            break;
        case 'b':
            //pPars->fUseBat ^= 1;
            pPars->fUseCheck1 ^= 1;
            break;
        case 'g':
            pPars->fDelayOpt ^= 1;
            break;
        case 'x':
            pPars->fDsdBalance ^= 1;
            break;
        case 'y':
            pPars->fUserRecLib ^= 1;
            break;
        case 'o':
            pPars->fUseBuffs ^= 1;
            break;
        case 'f':
            pPars->fEnableCheck75 ^= 1;
            break;
        case 'u':
            pPars->fEnableCheck75u ^= 1;
            break;
        case 'i':
            //pPars->fUseCofVars ^= 1;
            pPars->fUseCheck2 ^= 1;
            break;
        case 'j':
            pPars->fEnableCheck07 ^= 1;
            break;
        //case 'j':
        //    pPars->fUseAndVars ^= 1;
        //    break;
        case 'k':
            pPars->fUseDsdTune ^= 1;
            break;
        case 'z':
            pPars->fDeriveLuts ^= 1;
            break;
        case 't':
            pPars->fDoAverage ^= 1;
            break;
        case 'n':
            pPars->fUseDsd ^= 1;
            break;
        case 'c':
            pPars->fUseTtPerm ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVerboseTrace ^= 1;
            break;
        case 'h':
            pPars->fHashMapping ^= 1;
            break;
        default:
            goto usage;
        }
    }

    // Auto-detect K from cell library when -j is used
    if ( pPars->fEnableCheck07 && pPars->nLutSize == -1 )
    {
        If_LibCell_t * pCellLib = (If_LibCell_t *)Abc_FrameReadLibCell();
        if ( pCellLib )
        {
            int nMaxInputs = If_LibCellGetMaxInputs( pCellLib );
            if ( nMaxInputs > 0 )
            {
                pPars->nLutSize = nMaxInputs;
                if ( pPars->fVerbose )
                    Abc_Print( 1, "Auto-detected K=%d from cell library (max inputs).\n", nMaxInputs );
                // Disable LUT library since we're using K from cell library
                pPars->pLutLib = NULL;
                pPars->pCellLib = pCellLib;
            }
        }
    }

    if ( pAbc->pGia == NULL )
    {
        if ( !Abc_FrameReadFlag("silentmode") )
        Abc_Print( -1, "Empty GIA network.\n" );
        return 0;
    }
    if ( Gia_ManBufNum(pAbc->pGia) )
    {
        Abc_Print( -1, "This command does not work with barrier buffers.\n" );
        return 1;
    }
    if ( Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Current AIG has mapping. Run \"&st\".\n" );
        return 1;
    }

    if ( pPars->nLutSize == -1 )
    {
        if ( pPars->pLutLib == NULL )
        {
            Abc_Print( -1, "The LUT library is not given.\n" );
            return 1;
        }
        // get LUT size from the library
        pPars->nLutSize = pPars->pLutLib->LutMax;
        // if variable pin delay, force truth table computation
//        if ( pPars->pLutLib->fVarPinDelays )
//            pPars->fTruth = 1;
    }

    if ( pPars->nLutSize < 2 || pPars->nLutSize > IF_MAX_LUTSIZE )
    {
        Abc_Print( -1, "Incorrect LUT size (%d).\n", pPars->nLutSize );
        return 1;
    }

    if ( pPars->nCutsMax < 1 || pPars->nCutsMax >= (1<<12) )
    {
        Abc_Print( -1, "Incorrect number of cuts.\n" );
        return 1;
    }

    // enable truth table computation if choices are selected
    if ( Gia_ManHasChoices(pAbc->pGia) )
    {
//        if ( !Abc_FrameReadFlag("silentmode") )
//            Abc_Print( 0, "Performing LUT mapping with choices.\n" );
        pPars->fExpRed = 0;
    }

    if ( pPars->fUseBat )
    {
        if ( pPars->nLutSize < 4 || pPars->nLutSize > 6 )
        {
            Abc_Print( -1, "This feature only works for {4,5,6}-LUTs.\n" );
            return 1;
        }
        pPars->fCutMin = 1;
    }

    if ( pPars->fEnableCheck07 + pPars->fUseCofVars + pPars->fUseDsdTune + pPars->fEnableCheck75 + pPars->fEnableCheck75u + (pPars->pLutStruct != NULL) > 1 )
    {
        Abc_Print( -1, "Only one additional check can be performed at the same time.\n" );
        return 1;
    }
    if ( pPars->fEnableCheck07 )
    {
        if ( pPars->nLutSize > 9 )
        {
            Abc_Print( -1, "This feature only works for up to 9-input LUTs.\n" );
            return 1;
        }
        pPars->pFuncCell = If_CutPerformCheckJ;
        pPars->fCutMin = 1;
    }
    if ( pPars->fUseCheck1 || pPars->fUseCheck2 )
    {
        if ( pPars->nLutSize > 6 )
        {
            Abc_Print( -1, "This feature only works for no more than 6-LUTs.\n" );
            return 1;
        }
        pPars->pFuncCell = pPars->fUseCheck2 ? If_MatchCheck2 : If_MatchCheck1;
        pPars->fCutMin = 1;
    }
    if ( pPars->fUseCofVars )
    {
        if ( !(pPars->nLutSize & 1) )
        {
            Abc_Print( -1, "This feature only works for odd-sized LUTs.\n" );
            return 1;
        }
        pPars->fCutMin = 1;
    }
    if ( pPars->fUseAndVars )
        pPars->fCutMin = 1;
    if ( pPars->fUseDsdTune )
    {
        If_DsdMan_t * pDsdMan = (If_DsdMan_t *)Abc_FrameReadManDsd();
        if ( pDsdMan == NULL )
        {
            Abc_Print( -1, "DSD manager is not available.\n" );
            return 1;
        }
        if ( pPars->nLutSize > If_DsdManVarNum(pDsdMan) )
        {
            Abc_Print( -1, "LUT size (%d) is more than the number of variables in the DSD manager (%d).\n", pPars->nLutSize, If_DsdManVarNum(pDsdMan) );
            return 1;
        }
        if ( pPars->fDeriveLuts && If_DsdManGetCellStr(pDsdMan) == NULL )
        {
            Abc_Print( -1, "DSD manager is not matched with any particular cell.\n" );
            return 1;
        }
        pPars->fCutMin = 1;
        pPars->fUseDsd = 1;
        If_DsdManSetNewAsUseless( pDsdMan );
    }
    if ( pPars->fEnableCheck75 || pPars->fEnableCheck75u )
    {
        if ( pPars->fEnableCheck75 && pPars->fEnableCheck75u )
        {
            Abc_Print( -1, "Switches -f and -u are not compatible.\n" );
            return 1;
        }
        if ( pPars->nLutSize < 5 || pPars->nLutSize > 8 )
        {
            Abc_Print( -1, "This feature only works for {6,7,8}-LUTs.\n" );
            return 1;
        }
        pPars->pFuncCell = If_CutPerformCheck75;
        pPars->fCutMin = 1;
    }
    if ( pPars->pLutStruct )
    {
        if ( pPars->fDsdBalance )
        {
            Abc_Print( -1, "Incompatible options (-S and -x).\n" );
            return 1;
        }
        if ( pPars->nLutSize < 6 || pPars->nLutSize > 16 )
        {
            Abc_Print( -1, "This feature only works for [6;16]-LUTs.\n" );
            return 1;
        }
        if ( pPars->fEnableStructN )
        {
            pPars->pFuncCell = pPars->fDelayOptLut ? NULL : If_CutPerformCheckXX;
        }
        else
        {
            pPars->pFuncCell = pPars->fDelayOptLut ? NULL : If_CutPerformCheck16;
        }
        pPars->fCutMin = 1;
        pPars->nLutDecSize = pPars->pLutStruct[0] - '0';
    }

    if ( pPars->fUserLutDec )
    {
        if ( pPars->nLutDecSize == 0 )
        {
            Abc_Print( -1, "LUT decomposition size (%d) must be set.\n", pPars->nLutDecSize );
            return 1;
        }
        if ( pPars->nLutDecSize >= pPars->nLutSize )
        {
            Abc_Print( -1, "LUT size (%d) must be greater than the LUT decomposition size (%d).\n", pPars->nLutSize, pPars->nLutDecSize );
            return 1;
        }
        if ( pPars->nLutSize < 4 || pPars->nLutSize > 11 )
        {
            Abc_Print( -1, "This feature only works for [4;11]-LUTs.\n" );
            return 1;
        }
    }

    if ( pPars->fUse34Spec )
    {
        pPars->fTruth    = 1;
        pPars->fCutMin   = 1;
        pPars->nLutSize  = 4;
    }

    if ( pPars->fEnableCheck07 )
        pPars->nCutsMax = Abc_MaxInt( pPars->nCutsMax, 16 );
    else
        pPars->pCellLib = NULL;

    // enable truth table computation if cut minimization is selected
    if ( pPars->fCutMin || pPars->fDeriveLuts )
    {
        pPars->fTruth = 1;
        pPars->fExpRed = 0;
        if ( pPars->pLutStruct == NULL && !pPars->fUseDsdTune )
            pPars->fDeriveLuts = 1;
    }
    // modify the subgraph recording
    if ( pPars->fUserRecLib )
    {
        pPars->fTruth      =  1;
        pPars->fCutMin     =  1;
        pPars->fExpRed     =  0;
        pPars->fUsePerm    =  1;
        pPars->pLutLib     =  NULL;
    }
    // modify for delay optimization
    if ( pPars->fDelayOpt || pPars->fDsdBalance || pPars->fDelayOptLut || pPars->fUserLutDec )
    {
        pPars->fTruth      =  1;
        pPars->fCutMin     =  1;
        pPars->fExpRed     =  0;
        pPars->fUseDsd     =  pPars->fDsdBalance || pPars->fDelayOptLut;
        pPars->pLutLib     =  NULL;
    }
    // modify for delay optimization
    if ( pPars->nGateSize > 0 )
    {
        pPars->fTruth      =  1;
        pPars->fCutMin     =  1;
        pPars->fExpRed     =  0;
        pPars->fUsePerm    =  1;
        pPars->pLutLib     =  NULL;
        pPars->nLutSize    =  pPars->nGateSize;
    }

    if ( pPars->fUseDsd || pPars->fUseTtPerm || pPars->fLut6Filter )
    {
        pPars->fTruth      =  1;
        pPars->fCutMin     =  1;
        pPars->fExpRed     =  0;
    }

    if ( pPars->fUseDsd )
    {
        int LutSize = (pPars->pLutStruct && pPars->pLutStruct[2] == 0)? pPars->pLutStruct[0] - '0' : 0;
        If_DsdMan_t * p = (If_DsdMan_t *)Abc_FrameReadManDsd();
        if ( pPars->pLutStruct && pPars->pLutStruct[2] != 0 )
        {
            printf( "DSD only works for LUT structures XY.\n" );
            return 0;
        }
        if ( p && pPars->nLutSize > If_DsdManVarNum(p) )
        {
            printf( "DSD manager has incompatible number of variables.\n" );
            return 0;
        }
        if ( p && LutSize != If_DsdManLutSize(p) && !pPars->fDsdBalance )
        {
            printf( "DSD manager has different LUT size.\n" );
            return 0;
        }
        if ( p == NULL )
        {
            if ( LutSize > DAU_MAX_VAR || pPars->nLutSize > DAU_MAX_VAR )
            {
                printf( "Size of required DSD manager (%d) exceeds the precompiled limit (%d) (change parameter DAU_MAX_VAR).\n", LutSize, DAU_MAX_VAR );
                return 0;
            }
            Abc_FrameSetManDsd( If_DsdManAlloc(pPars->nLutSize, LutSize) );
        }
    }

    if ( pPars->fUserRecLib )
    {
        if ( !Abc_NtkRecIsRunning3() )
        {
            printf( "LMS manager is not running (use \"rec_start3\").\n" );
            return 0;
        }
        if ( Abc_NtkRecInputNum3() != pPars->nLutSize )
        {
            printf( "The number of library inputs (%d) different from the K parameters (%d).\n", Abc_NtkRecInputNum3(), pPars->nLutSize );
            return 0;
        }
    }

    // complain if truth tables are requested but the cut size is too large
    if ( pPars->fTruth && pPars->nLutSize > IF_MAX_FUNC_LUTSIZE )
    {
        Abc_Print( -1, "Truth tables cannot be computed for LUT larger than %d inputs.\n", IF_MAX_FUNC_LUTSIZE );
        return 1;
    }
    if ( pAbc->pGia->pManTime && pAbc->pLibBox == NULL )
    {
        Abc_Print( -1, "Design has boxes but box library is not entered.\n" );
        return 1;
    }

    // add wire delay to LUT library delays
    if ( pPars->WireDelay > 0 && pPars->pLutLib )
    {
        int i, k;
        for ( i = 0; i <= pPars->pLutLib->LutMax; i++ )
            for ( k = 0; k <= i; k++ )
                pPars->pLutLib->pLutDelays[i][k] += pPars->WireDelay;
    }
    // perform mapping
    pNew = Gia_ManPerformMapping( pAbc->pGia, pPars );
    // subtract wire delay from LUT library delays
    if ( pPars->WireDelay > 0 && pPars->pLutLib )
    {
        int i, k;
        for ( i = 0; i <= pPars->pLutLib->LutMax; i++ )
            for ( k = 0; k <= i; k++ )
                pPars->pLutLib->pLutDelays[i][k] -= pPars->WireDelay;
    }
    if ( pNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9If(): Mapping of GIA has failed.\n" );
        return 1;
    }
    Abc_FrameUpdateGia( pAbc, pNew );
    return 0;

usage:
    if ( pPars->DelayTarget == -1 )
        sprintf(Buffer, "best possible" );
    else
        sprintf(Buffer, "%.2f", pPars->DelayTarget );
    if ( pPars->nLutSize == -1 )
        sprintf(LutSize, "library" );
    else
        sprintf(LutSize, "%d", pPars->nLutSize );
    Abc_Print( -2, "usage: &if [-KCFAGRTXYZM num] [-DEW float] [-SJ str] [-qarlepmsdbgxyofuijkztnchvw]\n" );
    Abc_Print( -2, "\t           performs FPGA technology mapping of the network\n" );
    Abc_Print( -2, "\t-K num   : the number of LUT inputs (2 < num < %d) [default = %s]\n", IF_MAX_LUTSIZE+1, LutSize );
    Abc_Print( -2, "\t-C num   : the max number of priority cuts (0 < num < 2^12) [default = %d]\n", pPars->nCutsMax );
    Abc_Print( -2, "\t-F num   : the number of area flow recovery iterations (num >= 0) [default = %d]\n", pPars->nFlowIters );
    Abc_Print( -2, "\t-A num   : the number of exact area recovery iterations (num >= 0) [default = %d]\n", pPars->nAreaIters );
    Abc_Print( -2, "\t-G num   : the max AND/OR gate size for mapping (0 = unused) [default = %d]\n", pPars->nGateSize );
    Abc_Print( -2, "\t-R num   : the delay relaxation ratio (num >= 0) [default = %d]\n", pPars->nRelaxRatio );
    Abc_Print( -2, "\t-T num   : the type of LUT structures [default = any]\n", pPars->nStructType );
    Abc_Print( -2, "\t-X num   : delay of AND-gate in LUT library units [default = %d]\n", pPars->nAndDelay );
    Abc_Print( -2, "\t-Y num   : area of AND-gate in LUT library units [default = %d]\n", pPars->nAndArea );
    Abc_Print( -2, "\t-M num   : enables delay-driven decomposition [default = %d]\n", pPars->fDelayOptCell );
    Abc_Print( -2, "\t-D float : sets the delay constraint for the mapping [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-E float : sets epsilon used for tie-breaking [default = %f]\n", pPars->Epsilon );
    Abc_Print( -2, "\t-W float : sets wire delay between adjects LUTs [default = %f]\n", pPars->WireDelay );
    Abc_Print( -2, "\t-S str   : string representing the LUT structure [default = %s]\n", pPars->pLutStruct ? pPars->pLutStruct : "not used" );
    Abc_Print( -2, "\t-J str   : string representing the LUT structure [default = %s]\n", pPars->pLutStruct ? pPars->pLutStruct : "not used" );
    Abc_Print( -2, "\t-Z num   : the number of LUT inputs for delay-driven LUT decomposition [default = not used]\n" );
    Abc_Print( -2, "\t-q       : toggles preprocessing using several starting points [default = %s]\n", pPars->fPreprocess? "yes": "no" );
    Abc_Print( -2, "\t-a       : toggles area-oriented mapping [default = %s]\n", pPars->fArea? "yes": "no" );
    Abc_Print( -2, "\t-r       : enables expansion/reduction of the best cuts [default = %s]\n", pPars->fExpRed? "yes": "no" );
//    Abc_Print( -2, "\t-l       : optimizes latch paths for delay, other paths for area [default = %s]\n", pPars->fLatchPaths? "yes": "no" );
    Abc_Print( -2, "\t-l       : toggle restricting the type of 6-input lookup tables [default = %s]\n", pPars->fLut6Filter? "yes": "no" );
    Abc_Print( -2, "\t-e       : uses edge-based cut selection heuristics [default = %s]\n", pPars->fEdge? "yes": "no" );
    Abc_Print( -2, "\t-p       : uses power-aware cut selection heuristics [default = %s]\n", pPars->fPower? "yes": "no" );
    Abc_Print( -2, "\t-m       : enables cut minimization by removing vacuous variables [default = %s]\n", pPars->fCutMin? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggles delay-oriented mapping used with -S <NN> [default = %s]\n", pPars->fDelayOptLut? "yes": "no" );
    Abc_Print( -2, "\t-d       : toggles deriving specialized matching step [default = %s]\n", pPars->fUse34Spec? "yes": "no" );
    Abc_Print( -2, "\t-b       : toggles the use of one special feature [default = %s]\n", pPars->fUseBat? "yes": "no" );
    Abc_Print( -2, "\t-g       : toggles delay optimization by SOP balancing [default = %s]\n", pPars->fDelayOpt? "yes": "no" );
    Abc_Print( -2, "\t-x       : toggles delay optimization by DSD balancing [default = %s]\n", pPars->fDsdBalance? "yes": "no" );
    Abc_Print( -2, "\t-y       : toggles delay optimization with recorded library [default = %s]\n", pPars->fUserRecLib? "yes": "no" );
    Abc_Print( -2, "\t-o       : toggles using buffers to decouple combinational outputs [default = %s]\n", pPars->fUseBuffs? "yes": "no" );
    Abc_Print( -2, "\t-f       : toggles enabling additional check [default = %s]\n", pPars->fEnableCheck75? "yes": "no" );
    Abc_Print( -2, "\t-u       : toggles enabling additional check [default = %s]\n", pPars->fEnableCheck75u? "yes": "no" );
    Abc_Print( -2, "\t-i       : toggles using cofactoring variables [default = %s]\n", pPars->fUseCofVars? "yes": "no" );
    Abc_Print( -2, "\t-j       : toggles enabling additional check [default = %s]\n", pPars->fEnableCheck07? "yes": "no" );
//    Abc_Print( -2, "\t-j       : toggles using AND bi-decomposition [default = %s]\n", pPars->fUseAndVars? "yes": "no" );
    Abc_Print( -2, "\t-k       : toggles matching based on precomputed DSD manager [default = %s]\n", pPars->fUseDsdTune? "yes": "no" );
    Abc_Print( -2, "\t-z       : toggles deriving LUTs when mapping into LUT structures [default = %s]\n", pPars->fDeriveLuts? "yes": "no" );
    Abc_Print( -2, "\t-t       : toggles optimizing average rather than maximum level [default = %s]\n", pPars->fDoAverage? "yes": "no" );
    Abc_Print( -2, "\t-n       : toggles computing DSDs of the cut functions [default = %s]\n", pPars->fUseDsd? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggles computing truth tables in a new way [default = %s]\n", pPars->fUseTtPerm? "yes": "no" );
    Abc_Print( -2, "\t-h       : toggles rehashing AIG after mapping [default = %s]\n", pPars->fHashMapping? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles printing delay trace [default = %s]\n", pPars->fVerboseTrace? "yes": "no" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Iff( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManIffTest( Gia_Man_t * pGia, If_LibLut_t * pLib, int fVerbose );
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iff(): There is no AIG to map.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iff(): Mapping of the AIG is not defined.\n" );
        return 1;
    }
    if ( Abc_FrameReadLibLut() == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iff(): LUT library is not defined.\n" );
        return 1;
    }
    Gia_ManIffTest( pAbc->pGia, (If_LibLut_t *)Abc_FrameReadLibLut(), fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &iff [-vh]\n" );
    Abc_Print( -2, "\t           performs structural mapping into LUT structures\n" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Iiff( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManIiffTest( char * pFileName, Gia_Man_t * pGia, int nLutSize, int nNumCuts, int fUseGates, int fUseCells, int fUseLuts, int fVerbose );
    char * pFileName = NULL;
    int nLutSize     =  8;
    int nNumCuts     = 12;
    int fUseGates    =  0;
    int fUseCells    =  0;
    int fUseLuts     =  0;
    int c, fVerbose  =  0;
    Gia_Man_t * pNew;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCgclvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nNumCuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'g':
            fUseGates ^= 1;
            break;
        case 'c':
            fUseCells ^= 1;
            break;
        case 'l':
            fUseLuts ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
        pFileName = argv[globalUtilOptind];
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iiff(): There is no AIG to map.\n" );
        return 1;
    }
    pNew = Gia_ManIiffTest( pFileName, pAbc->pGia, nLutSize, nNumCuts, fUseGates, fUseCells, fUseLuts, fVerbose );
    if ( pNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iiff(): Mapping has failed.\n" );
        return 1;
    }
    Abc_FrameUpdateGia( pAbc, pNew );
    return 0;

usage:
    Abc_Print( -2, "usage: &iiff [-KC num] [-gclvh] <file>\n" );
    Abc_Print( -2, "\t           performs techology mapping\n" );
    Abc_Print( -2, "\t-K num   : the maximum LUT size [default = %d]\n",  nLutSize );
    Abc_Print( -2, "\t-C num   : the maximum cut count [default = %d]\n", nNumCuts );
    Abc_Print( -2, "\t-g       : toggle using gates [default = %s]\n",    fUseGates? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggle using cells [default = %s]\n",    fUseCells? "yes": "no" );
    Abc_Print( -2, "\t-l       : toggle using LUTs  [default = %s]\n",    fUseLuts? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t<file>   : (optional) output file name\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9If2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Mpm_ManCellMapping( Gia_Man_t * p, Mpm_Par_t * pPars, void * pMio );
    extern Gia_Man_t * Mpm_ManLutMapping( Gia_Man_t * p, Mpm_Par_t * pPars );
    char Buffer[200];
    Abc_Ntk_t * pTemp;
    Gia_Man_t * pNew;
    Mpm_Par_t Pars, * pPars = &Pars;
    int c, nLutSize = 6;
    // set defaults
    Mpm_ManSetParsDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCDtmzrcuxvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 2 || nLutSize > 16 )
            {
                Abc_Print( -1, "LUT size %d is not supported.\n", nLutSize );
                goto usage;
            }
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nNumCuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNumCuts < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->DelayTarget = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelayTarget <= 0.0 )
                goto usage;
            break;
        case 't':
            pPars->fUseGates ^= 1;
            break;
        case 'm':
            pPars->fCutMin ^= 1;
            break;
        case 'z':
            pPars->fDeriveLuts ^= 1;
            break;
        case 'r':
            pPars->fOneRound ^= 1;
            break;
        case 'c':
            pPars->fMap4Cnf ^= 1;
            break;
        case 'u':
            pPars->fMap4Aig ^= 1;
            break;
        case 'x':
            pPars->fMap4Gates ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }

    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }

    if ( pPars->fMap4Cnf )
        pPars->fUseDsd = 1;
    if ( pPars->fCutMin )
        pPars->fUseDsd = 1;
//        pPars->fUseTruth = 1;
    if ( pPars->fMap4Gates )
    {
        pPars->fUseDsd = 1;
        if ( pAbc->pLibScl == NULL )
        {
            Abc_Print( -1, "There is no SCL library available.\n" );
            return 1;
        }
        pPars->pScl = pAbc->pLibScl;
    }
    if ( pPars->fUseDsd || pPars->fUseTruth )
        pPars->fDeriveLuts = 1;
    if ( pPars->fUseDsd && nLutSize != 6 )
    {
        Abc_Print( -1, "Currently DSD can only be used with 6-input cuts.\n" );
        return 1;
    }
    // perform mapping
    assert( pPars->pLib == NULL );
    if ( pPars->fMap4Gates )
    {
        if ( Abc_FrameReadLibGen() == NULL )
        {
            Abc_Print( -1, "There is no GENLIB library available.\n" );
            return 1;
        }
        pPars->pLib = Mpm_LibLutSetSimple( nLutSize );
        pTemp = Mpm_ManCellMapping( pAbc->pGia, pPars, Abc_FrameReadLibGen() );
        Mpm_LibLutFree( pPars->pLib );
        if ( pTemp == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9If2(): Mapping into standard cells has failed.\n" );
            return 1;
        }
        Abc_FrameReplaceCurrentNetwork( pAbc, pTemp );
    }
    else
    {
        pPars->pLib = Mpm_LibLutSetSimple( nLutSize );
        pNew = Mpm_ManLutMapping( pAbc->pGia, pPars );
        Mpm_LibLutFree( pPars->pLib );
        if ( pNew == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9If2(): Mapping into LUTs has failed.\n" );
            return 1;
        }
        Abc_FrameUpdateGia( pAbc, pNew );
    }
    return 0;

usage:
    if ( pPars->DelayTarget == -1 )
        sprintf(Buffer, "best possible" );
    else
        sprintf(Buffer, "%d", pPars->DelayTarget );
    Abc_Print( -2, "usage: &if2 [-KCD num] [-tmzrcuxvwh]\n" );
    Abc_Print( -2, "\t           performs technology mapping of the network\n" );
    Abc_Print( -2, "\t-K num   : sets the LUT size for the mapping [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-C num   : the max number of priority cuts (0 < num < 2^12) [default = %d]\n", pPars->nNumCuts );
    Abc_Print( -2, "\t-D num   : sets the delay constraint for the mapping [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-t       : enables using AND/XOR/MUX nodes instead of simple AIG [default = %s]\n", pPars->fUseGates? "yes": "no" );
    Abc_Print( -2, "\t-m       : enables cut minimization by removing vacuous variables [default = %s]\n", pPars->fCutMin? "yes": "no" );
    Abc_Print( -2, "\t-z       : toggles deriving LUTs when mapping into LUT structures [default = %s]\n", pPars->fDeriveLuts? "yes": "no" );
    Abc_Print( -2, "\t-r       : toggles using one round of mapping [default = %s]\n", pPars->fOneRound? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggles mapping for CNF computation [default = %s]\n", pPars->fMap4Cnf? "yes": "no" );
    Abc_Print( -2, "\t-u       : toggles mapping for AIG computation [default = %s]\n", pPars->fMap4Aig? "yes": "no" );
    Abc_Print( -2, "\t-x       : toggles mapping for standard cells [default = %s]\n", pPars->fMap4Gates? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles very verbose output [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Sif( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManSifPerform( Gia_Man_t * p, int nLutSize, int fEvalOnly, int fVerbose );
    Gia_Man_t * pNew;
    int c, nLutSize = 6, fEvalOnly = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Kevh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 2 || nLutSize > 16 )
            {
                Abc_Print( -1, "LUT size %d is not supported.\n", nLutSize );
                goto usage;
            }
            break;
        case 'e':
            fEvalOnly ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    pNew = Gia_ManSifPerform( pAbc->pGia, nLutSize, fEvalOnly, fVerbose );
    if ( pNew != NULL )
        Abc_FrameUpdateGia( pAbc, pNew );
    return 0;

usage:
    Abc_Print( -2, "usage: &sif [-K num] [-evh]\n" );
    Abc_Print( -2, "\t           performs technology mapping\n" );
    Abc_Print( -2, "\t-K num   : sets the LUT size for the mapping [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-e       : toggles the evaluation mode [default = %s]\n", fEvalOnly? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Jf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char Buffer[200];
    Jf_Par_t Pars, * pPars = &Pars;
    Gia_Man_t * pNew; int c;
    Jf_ManSetDefaultPars( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCDWaekmdcgvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 2 || pPars->nLutSize > pPars->nLutSizeMax )
            {
                Abc_Print( -1, "LUT size %d is not supported.\n", pPars->nLutSize );
                goto usage;
            }
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutNum < 1 || pPars->nCutNum > pPars->nCutNumMax )
            {
                Abc_Print( -1, "This number of cuts (%d) is not supported.\n", pPars->nCutNum );
                goto usage;
            }
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->DelayTarget = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelayTarget <= 0.0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nVerbLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVerbLimit < 0 )
                goto usage;
            break;
        case 'a':
            pPars->fAreaOnly ^= 1;
            break;
        case 'e':
            pPars->fOptEdge ^= 1;
            break;
        case 'k':
            pPars->fCoarsen ^= 1;
            break;
        case 'm':
            pPars->fCutMin ^= 1;
            break;
        case 'd':
            pPars->fFuncDsd ^= 1;
            break;
        case 'c':
            pPars->fGenCnf ^= 1;
            break;
        case 'g':
            pPars->fPureAig ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }

    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( Gia_ManBufNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Jf(): This command does not work with barrier buffers.\n" );
        return 1;
    }
    if ( (pPars->fFuncDsd || pPars->fGenCnf) && pPars->nLutSize > 6 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Jf(): DSD computation works for LUT6 or less.\n" );
        return 1;
    }

    if ( (pPars->fFuncDsd || pPars->fGenCnf) && !Sdm_ManCanRead() )
    {
        Abc_Print( -1, "Abc_CommandAbc9Jf(): Cannot input DSD data from file.\n" );
        return 1;
    }

    pNew = Jf_ManPerformMapping( pAbc->pGia, pPars );
    if ( pNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Jf(): Mapping into LUTs has failed.\n" );
        return 1;
    }
    Abc_FrameUpdateGia( pAbc, pNew );
    return 0;

usage:
    if ( pPars->DelayTarget == -1 )
        sprintf(Buffer, "best possible" );
    else
        sprintf(Buffer, "%d", pPars->DelayTarget );
    Abc_Print( -2, "usage: &jf [-KCDW num] [-akmdcgvwh]\n" );
    Abc_Print( -2, "\t           performs technology mapping of the network\n" );
    Abc_Print( -2, "\t-K num   : LUT size for the mapping (2 <= K <= %d) [default = %d]\n", pPars->nLutSizeMax, pPars->nLutSize );
    Abc_Print( -2, "\t-C num   : the max number of priority cuts (1 <= C <= %d) [default = %d]\n", pPars->nCutNumMax, pPars->nCutNum );
    Abc_Print( -2, "\t-D num   : sets the delay constraint for the mapping [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-W num   : min frequency when printing functions with \"-w\" [default = %d]\n", pPars->nVerbLimit );
    Abc_Print( -2, "\t-a       : toggles area-oriented mapping [default = %s]\n", pPars->fAreaOnly? "yes": "no" );
    Abc_Print( -2, "\t-e       : toggles edge vs node minimization [default = %s]\n", pPars->fOptEdge? "yes": "no" );
    Abc_Print( -2, "\t-k       : toggles coarsening the subject graph [default = %s]\n", pPars->fCoarsen? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggles cut minimization [default = %s]\n", pPars->fCutMin? "yes": "no" );
    Abc_Print( -2, "\t-d       : toggles using DSD to represent cut functions [default = %s]\n", pPars->fFuncDsd? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggles mapping for CNF generation [default = %s]\n", pPars->fGenCnf? "yes": "no" );
    Abc_Print( -2, "\t-g       : toggles generating AIG without mapping [default = %s]\n", pPars->fPureAig? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles very verbose output [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Kf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Kf_ManSetDefaultPars( Jf_Par_t * pPars );
    extern Gia_Man_t * Kf_ManPerformMapping( Gia_Man_t * pGia, Jf_Par_t * pPars );
    char Buffer[200];
    Jf_Par_t Pars, * pPars = &Pars;
    Gia_Man_t * pNew; int c;
    Kf_ManSetDefaultPars( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCPDWaekmdcgtsvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 2 || pPars->nLutSize > pPars->nLutSizeMax )
            {
                Abc_Print( -1, "LUT size %d is not supported.\n", pPars->nLutSize );
                goto usage;
            }
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutNum < 1 || pPars->nCutNum > pPars->nCutNumMax )
            {
                Abc_Print( -1, "This number of cuts (%d) is not supported.\n", pPars->nCutNum );
                goto usage;
            }
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nProcNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nProcNum < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->DelayTarget = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelayTarget <= 0.0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nVerbLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVerbLimit < 0 )
                goto usage;
            break;
        case 'a':
            pPars->fAreaOnly ^= 1;
            break;
        case 'e':
            pPars->fOptEdge ^= 1;
            break;
        case 'k':
            pPars->fCoarsen ^= 1;
            break;
        case 'm':
            pPars->fCutMin ^= 1;
            break;
        case 'd':
            pPars->fFuncDsd ^= 1;
            break;
        case 'c':
            pPars->fGenCnf ^= 1;
            break;
        case 'g':
            pPars->fPureAig ^= 1;
            break;
        case 't':
            pPars->fCutHashing ^= 1;
            break;
        case 's':
            pPars->fCutSimple ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }

    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }

    pNew = Kf_ManPerformMapping( pAbc->pGia, pPars );
    if ( pNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Kf(): Mapping into LUTs has failed.\n" );
        return 1;
    }
    Abc_FrameUpdateGia( pAbc, pNew );
    return 0;

usage:
    if ( pPars->DelayTarget == -1 )
        sprintf(Buffer, "best possible" );
    else
        sprintf(Buffer, "%d", pPars->DelayTarget );
    Abc_Print( -2, "usage: &kf [-KCPDW num] [-akmdcgtsvwh]\n" );
    Abc_Print( -2, "\t           performs technology mapping of the network\n" );
    Abc_Print( -2, "\t-K num   : LUT size for the mapping (2 <= K <= %d) [default = %d]\n", pPars->nLutSizeMax, pPars->nLutSize );
    Abc_Print( -2, "\t-C num   : the max number of priority cuts (1 <= C <= %d) [default = %d]\n", pPars->nCutNumMax, pPars->nCutNum );
    Abc_Print( -2, "\t-P num   : the number of cut computation processes (0 <= P <= %d) [default = %d]\n", pPars->nProcNumMax, pPars->nProcNum );
    Abc_Print( -2, "\t-D num   : sets the delay constraint for the mapping [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-W num   : min frequency when printing functions with \"-w\" [default = %d]\n", pPars->nVerbLimit );
    Abc_Print( -2, "\t-a       : toggles area-oriented mapping [default = %s]\n", pPars->fAreaOnly? "yes": "no" );
    Abc_Print( -2, "\t-e       : toggles edge vs node minimization [default = %s]\n", pPars->fOptEdge? "yes": "no" );
    Abc_Print( -2, "\t-k       : toggles coarsening the subject graph [default = %s]\n", pPars->fCoarsen? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggles cut minimization [default = %s]\n", pPars->fCutMin? "yes": "no" );
    Abc_Print( -2, "\t-d       : toggles using DSD to represent cut functions [default = %s]\n", pPars->fFuncDsd? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggles mapping for CNF generation [default = %s]\n", pPars->fGenCnf? "yes": "no" );
    Abc_Print( -2, "\t-g       : toggles generating AIG without mapping [default = %s]\n", pPars->fPureAig? "yes": "no" );
    Abc_Print( -2, "\t-t       : toggles cut computation using hash table [default = %s]\n", pPars->fCutHashing? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggles cut computation using a simple method [default = %s]\n", pPars->fCutSimple? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles very verbose output [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Lf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char Buffer[200];
    Jf_Par_t Pars, * pPars = &Pars;
    Gia_Man_t * pNew; int c;
    Lf_ManSetDefaultPars( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCFARLEDWMekmupstgvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 2 || pPars->nLutSize > pPars->nLutSizeMax )
            {
                Abc_Print( -1, "LUT size %d is not supported.\n", pPars->nLutSize );
                goto usage;
            }
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutNum < 1 || pPars->nCutNum > pPars->nCutNumMax )
            {
                Abc_Print( -1, "This number of cuts (%d) is not supported.\n", pPars->nCutNum );
                goto usage;
            }
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRounds < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nRoundsEla = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRoundsEla < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nRelaxRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRelaxRatio < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nCoarseLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCoarseLimit < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-E\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nAreaTuner = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nAreaTuner < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->DelayTarget = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelayTarget <= 0.0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nVerbLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVerbLimit < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nLutSizeMux = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSizeMux < 2 || pPars->nLutSizeMux > pPars->nLutSizeMax )
            {
                Abc_Print( -1, "LUT size %d is not supported.\n", pPars->nLutSizeMux );
                goto usage;
            }
            break;
        case 'a':
            pPars->fAreaOnly ^= 1;
            break;
        case 'e':
            pPars->fOptEdge ^= 1;
            break;
        case 'k':
            pPars->fCoarsen ^= 1;
            break;
        case 'm':
            pPars->fCutMin ^= 1;
            break;
        case 'u':
            pPars->fUseMux7 ^= 1;
            break;
        case 'p':
            pPars->fPower ^= 1;
            break;
        case 's':
            pPars->fPureAig ^= 1;
            break;
        case 't':
            pPars->fDoAverage ^= 1;
            break;
        case 'g':
            pPars->fCutGroup ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }

    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Current AIG has mapping. Run \"&st\".\n" );
        return 1;
    }
    if ( pPars->nLutSizeMux && pPars->fUseMux7 )
    {
        Abc_Print( -1, "Flags \"-M\" and \"-u\" are incompatible.\n" );
        return 1;
    }
    if ( pPars->fCutGroup )
    {
        if ( pPars->nLutSize < 4 || pPars->nLutSize > 6 )
        {
            Abc_Print( -1, "This feature works only for LUT size equal to 4, 5, and 6.\n" );
            return 1;
        }
        printf( "Using cut grouping for %d-LUTs. Considering cuts up to %d.\n", pPars->nLutSize, 2*pPars->nLutSize + 1 );
        pPars->nLutSize = 2*pPars->nLutSize + 1;
    }
    pNew = Lf_ManPerformMapping( pAbc->pGia, pPars );
    if ( pNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Lf(): Mapping into LUTs has failed.\n" );
        return 1;
    }
    Abc_FrameUpdateGia( pAbc, pNew );
    return 0;

usage:
    if ( pPars->DelayTarget == -1 )
        sprintf(Buffer, "best possible" );
    else
        sprintf(Buffer, "%d", pPars->DelayTarget );
    Abc_Print( -2, "usage: &lf [-KCFARLEDM num] [-kmupstgvwh]\n" );
    Abc_Print( -2, "\t           performs technology mapping of the network\n" );
    Abc_Print( -2, "\t-K num   : LUT size for the mapping (2 <= K <= %d) [default = %d]\n", pPars->nLutSizeMax, pPars->nLutSize );
    Abc_Print( -2, "\t-C num   : the max number of priority cuts (1 <= C <= %d) [default = %d]\n", pPars->nCutNumMax, pPars->nCutNum );
    Abc_Print( -2, "\t-F num   : the number of area flow rounds [default = %d]\n", pPars->nRounds );
    Abc_Print( -2, "\t-A num   : the number of exact area rounds [default = %d]\n", pPars->nRoundsEla );
    Abc_Print( -2, "\t-R num   : the delay relaxation ratio (num >= 0) [default = %d]\n", pPars->nRelaxRatio );
    Abc_Print( -2, "\t-L num   : the fanout limit for coarsening XOR/MUX (num >= 2) [default = %d]\n", pPars->nCoarseLimit );
    Abc_Print( -2, "\t-E num   : the area/edge tradeoff parameter (0 <= num <= 100) [default = %d]\n", pPars->nAreaTuner );
    Abc_Print( -2, "\t-D num   : sets the delay constraint for the mapping [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-M num   : LUT size when cofactoring is performed (0 <= num <= 100) [default = %d]\n", pPars->nLutSizeMux );
//    Abc_Print( -2, "\t-a       : toggles area-oriented mapping [default = %s]\n", pPars->fAreaOnly? "yes": "no" );
    Abc_Print( -2, "\t-e       : toggles edge vs node minimization [default = %s]\n", pPars->fOptEdge? "yes": "no" );
    Abc_Print( -2, "\t-k       : toggles coarsening the subject graph [default = %s]\n", pPars->fCoarsen? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggles cut minimization [default = %s]\n", pPars->fCutMin? "yes": "no" );
    Abc_Print( -2, "\t-u       : toggles using additional MUXes [default = %s]\n", pPars->fUseMux7? "yes": "no" );
    Abc_Print( -2, "\t-p       : toggles power-aware cut selection heuristics [default = %s]\n", pPars->fPower? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggles generating AIG without mapping [default = %s]\n", pPars->fPureAig? "yes": "no" );
    Abc_Print( -2, "\t-t       : toggles optimizing average rather than maximum level [default = %s]\n", pPars->fDoAverage? "yes": "no" );
    Abc_Print( -2, "\t-g       : toggles using cut splitting [default = %s]\n", pPars->fCutGroup? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles very verbose output [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Mf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    char Buffer[200];
    Jf_Par_t Pars, * pPars = &Pars;
    Gia_Man_t * pNew; int c;
    Mf_ManSetDefaultPars( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCFARLEDWaekmclgvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 2 || pPars->nLutSize > pPars->nLutSizeMax )
            {
                Abc_Print( -1, "LUT size %d is not supported.\n", pPars->nLutSize );
                goto usage;
            }
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutNum < 1 || pPars->nCutNum > pPars->nCutNumMax )
            {
                Abc_Print( -1, "This number of cuts (%d) is not supported.\n", pPars->nCutNum );
                goto usage;
            }
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRounds < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nRoundsEla = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRoundsEla < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nRelaxRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRelaxRatio < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nCoarseLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCoarseLimit < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-E\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nAreaTuner = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nAreaTuner < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->DelayTarget = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelayTarget <= 0.0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nVerbLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVerbLimit < 0 )
                goto usage;
            break;
        case 'a':
            pPars->fAreaOnly ^= 1;
            break;
        case 'e':
            pPars->fOptEdge ^= 1;
            break;
        case 'k':
            pPars->fCoarsen ^= 1;
            break;
        case 'm':
            pPars->fCutMin ^= 1;
            break;
        case 'c':
            pPars->fGenCnf ^= 1;
            break;
        case 'l':
            pPars->fGenLit ^= 1;
            break;
        case 'g':
            pPars->fPureAig ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }

    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }

    pNew = Mf_ManPerformMapping( pAbc->pGia, pPars );
    if ( pNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Lf(): Mapping into LUTs has failed.\n" );
        return 1;
    }
    if ( pPars->fGenCnf )
        Cnf_DataFree( (Cnf_Dat_t*)pAbc->pGia->pData ), pAbc->pGia->pData = NULL;
    Abc_FrameUpdateGia( pAbc, pNew );
    return 0;

usage:
    if ( pPars->DelayTarget == -1 )
        sprintf(Buffer, "best possible" );
    else
        sprintf(Buffer, "%d", pPars->DelayTarget );
    Abc_Print( -2, "usage: &mf [-KCFARLED num] [-akmcgvwh]\n" );
    Abc_Print( -2, "\t           performs technology mapping of the network\n" );
    Abc_Print( -2, "\t-K num   : LUT size for the mapping (2 <= K <= %d) [default = %d]\n", pPars->nLutSizeMax, pPars->nLutSize );
    Abc_Print( -2, "\t-C num   : the max number of priority cuts (1 <= C <= %d) [default = %d]\n", pPars->nCutNumMax, pPars->nCutNum );
    Abc_Print( -2, "\t-F num   : the number of area flow rounds [default = %d]\n", pPars->nRounds );
    Abc_Print( -2, "\t-A num   : the number of exact area rounds [default = %d]\n", pPars->nRoundsEla );
    Abc_Print( -2, "\t-R num   : the delay relaxation ratio (num >= 0) [default = %d]\n", pPars->nRelaxRatio );
    Abc_Print( -2, "\t-L num   : the fanout limit for coarsening XOR/MUX (num >= 2) [default = %d]\n", pPars->nCoarseLimit );
    Abc_Print( -2, "\t-E num   : the area/edge tradeoff parameter (0 <= num <= 100) [default = %d]\n", pPars->nAreaTuner );
    Abc_Print( -2, "\t-D num   : sets the delay constraint for the mapping [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-a       : toggles area-oriented mapping [default = %s]\n", pPars->fAreaOnly? "yes": "no" );
    Abc_Print( -2, "\t-e       : toggles edge vs node minimization [default = %s]\n", pPars->fOptEdge? "yes": "no" );
    Abc_Print( -2, "\t-k       : toggles coarsening the subject graph [default = %s]\n", pPars->fCoarsen? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggles cut minimization [default = %s]\n", pPars->fCutMin? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggles mapping for CNF generation [default = %s]\n", pPars->fGenCnf? "yes": "no" );
    Abc_Print( -2, "\t-l       : toggles mapping for literals [default = %s]\n", pPars->fGenLit? "yes": "no" );
    Abc_Print( -2, "\t-g       : toggles generating AIG without mapping [default = %s]\n", pPars->fPureAig? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles very verbose output [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Nf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Nf_ManSetDefaultPars( Jf_Par_t * pPars );
    extern Gia_Man_t * Nf_ManPerformMapping( Gia_Man_t * pGia, Jf_Par_t * pPars );
    extern Gia_Man_t * Pf_ManPerformMapping( Gia_Man_t * pGia, Jf_Par_t * pPars );
    char Buffer[200];
    Jf_Par_t Pars, * pPars = &Pars;
    Gia_Man_t * pNew; int c;
    Nf_ManSetDefaultPars( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCFARLEDQMWZakpqfvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 2 || pPars->nLutSize > pPars->nLutSizeMax )
            {
                Abc_Print( -1, "LUT size %d is not supported.\n", pPars->nLutSize );
                goto usage;
            }
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutNum < 1 || pPars->nCutNum > pPars->nCutNumMax )
            {
                Abc_Print( -1, "This number of cuts (%d) is not supported.\n", pPars->nCutNum );
                goto usage;
            }
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRounds < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nRoundsEla = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRoundsEla < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by an integer number.\n" );
                return 0;
            }
            pPars->nRelaxRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRelaxRatio < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by an integer number.\n" );
                return 0;
            }
            pPars->nCoarseLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCoarseLimit < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-E\" should be followed by an integer number.\n" );
                return 0;
            }
            pPars->nAreaTuner = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nAreaTuner < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer number.\n" );
                goto usage;
            }
            pPars->DelayTarget = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelayTarget <= 0 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by an integer number.\n" );
                goto usage;
            }
            pPars->nReqTimeFlex = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nReqTimeFlex < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer number.\n" );
                goto usage;
            }
            pPars->nMaxMatches = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nMaxMatches < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nVerbLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nVerbLimit < 0 )
                goto usage;
            break;
        case 'Z':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Z\" should be followed by an output file name.\n" );
                goto usage;
            }
            pPars->ZFile = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'a':
            pPars->fAreaOnly ^= 1;
            break;
        case 'k':
            pPars->fCoarsen ^= 1;
            break;
        case 'p':
            pPars->fPinPerm ^= 1;
            break;
        case 'q':
            pPars->fPinQuick ^= 1;
            break;
        case 'f':
            pPars->fPinFilter ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( Abc_FrameReadLibGen() == NULL )
    {
        Abc_Print( -1, "Current library is not available.\n" );
        return 1;
    }
//    if ( pPars->fAreaOnly )
//        pNew = Pf_ManPerformMapping( pAbc->pGia, pPars );
//    else
        pNew = Nf_ManPerformMapping( pAbc->pGia, pPars );
    if ( pNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Nf(): Mapping into LUTs has failed.\n" );
        return 1;
    }
    Abc_FrameUpdateGia( pAbc, pNew );
    return 0;

usage:
    if ( pPars->DelayTarget == -1 )
        sprintf(Buffer, "best possible" );
    else
        sprintf(Buffer, "%d", pPars->DelayTarget );
    Abc_Print( -2, "usage: &nf [-KCFARLEDQM num] [-Z file] [-akpqfvwh]\n" );
    Abc_Print( -2, "\t           performs technology mapping of the network\n" );
    Abc_Print( -2, "\t-K num   : LUT size for the mapping (2 <= K <= %d) [default = %d]\n",                  pPars->nLutSizeMax, pPars->nLutSize );
    Abc_Print( -2, "\t-C num   : the max number of priority cuts (1 <= C <= %d) [default = %d]\n",           pPars->nCutNumMax, pPars->nCutNum );
    Abc_Print( -2, "\t-F num   : the number of area flow rounds [default = %d]\n",                           pPars->nRounds );
    Abc_Print( -2, "\t-A num   : the number of exact area rounds (when \'-a\' is used) [default = %d]\n",    pPars->nRoundsEla );
    Abc_Print( -2, "\t-R num   : the delay relaxation ratio (num >= 0) [default = %d]\n",                    pPars->nRelaxRatio );
    Abc_Print( -2, "\t-L num   : the fanout limit for coarsening XOR/MUX (num >= 2) [default = %d]\n",       pPars->nCoarseLimit );
    Abc_Print( -2, "\t-E num   : the area/edge tradeoff parameter (0 <= num <= 100) [default = %d]\n",       pPars->nAreaTuner );
    Abc_Print( -2, "\t-D num   : sets the delay constraint for the mapping [default = %s]\n",                Buffer );
    Abc_Print( -2, "\t-Q num   : internal parameter impacting area of the mapping [default = %d]\n",         pPars->nReqTimeFlex );
    Abc_Print( -2, "\t-M num   : the max number of matches to dump into a binary file [default = %d]\n",     pPars->nMaxMatches );
    Abc_Print( -2, "\t-Z file  : the output file name to dump internal match info [default = unused]\n" );
    Abc_Print( -2, "\t-a       : toggles SAT-based area-oriented mapping (experimental) [default = %s]\n",   pPars->fAreaOnly? "yes": "no" );
    Abc_Print( -2, "\t-k       : toggles coarsening the subject graph [default = %s]\n",                     pPars->fCoarsen? "yes": "no" );
    Abc_Print( -2, "\t-p       : toggles pin permutation (more matches - better quality) [default = %s]\n",  pPars->fPinPerm? "yes": "no" );
    Abc_Print( -2, "\t-q       : toggles quick mapping (fewer matches - worse quality) [default = %s]\n",    pPars->fPinQuick? "yes": "no" );
    Abc_Print( -2, "\t-f       : toggles filtering matches (useful with unit delay model) [default = %s]\n", pPars->fPinFilter? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n",                                   pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles very verbose output [default = %s]\n",                              pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Of( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Of_ManSetDefaultPars( Jf_Par_t * pPars );
    extern Gia_Man_t * Of_ManPerformMapping( Gia_Man_t * pGia, Jf_Par_t * pPars );
    char Buffer[200];
    Jf_Par_t Pars, * pPars = &Pars;
    Gia_Man_t * pNew; int c;
    Of_ManSetDefaultPars( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCFARLEDNMQekmpgtvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 2 || pPars->nLutSize > pPars->nLutSizeMax )
            {
                Abc_Print( -1, "LUT size %d is not supported.\n", pPars->nLutSize );
                goto usage;
            }
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutNum < 1 || pPars->nCutNum > pPars->nCutNumMax )
            {
                Abc_Print( -1, "This number of cuts (%d) is not supported.\n", pPars->nCutNum );
                goto usage;
            }
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRounds < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nRoundsEla = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRoundsEla < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nRelaxRatio = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRelaxRatio < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-R\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nCoarseLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCoarseLimit < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( 1, "Command line switch \"-E\" should be followed by a floating point number.\n" );
                return 0;
            }
            pPars->nAreaTuner = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nAreaTuner < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a floating point number.\n" );
                goto usage;
            }
            pPars->DelayTarget = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->DelayTarget <= 0.0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nDelayLut1 = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nDelayLut1 < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nDelayLut2 = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nDelayLut2 < 0 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by a positive integer.\n" );
                goto usage;
            }
            pPars->nFastEdges = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFastEdges < 0 )
                goto usage;
            break;
        case 'e':
            pPars->fOptEdge ^= 1;
            break;
        case 'k':
            pPars->fCoarsen ^= 1;
            break;
        case 'm':
            pPars->fCutMin ^= 1;
            break;
        case 'p':
            pPars->fPower ^= 1;
            break;
        case 'g':
            pPars->fPureAig ^= 1;
            break;
        case 't':
            pPars->fDoAverage ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }

    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Current AIG has mapping. Run \"&st\".\n" );
        return 1;
    }

    pNew = Of_ManPerformMapping( pAbc->pGia, pPars );
    if ( pNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Of(): Mapping into LUTs has failed.\n" );
        return 1;
    }
    Abc_FrameUpdateGia( pAbc, pNew );
    return 0;

usage:
    if ( pPars->DelayTarget == -1 )
        sprintf(Buffer, "best possible" );
    else
        sprintf(Buffer, "%d", pPars->DelayTarget );
    Abc_Print( -2, "usage: &of [-KCFARLEDNMQ num] [-kmpgtvwh]\n" );
    Abc_Print( -2, "\t           performs technology mapping of the network\n" );
    Abc_Print( -2, "\t-K num   : LUT size for the mapping (2 <= K <= %d) [default = %d]\n", pPars->nLutSizeMax, pPars->nLutSize );
    Abc_Print( -2, "\t-C num   : the max number of priority cuts (1 <= C <= %d) [default = %d]\n", pPars->nCutNumMax, pPars->nCutNum );
    Abc_Print( -2, "\t-F num   : the number of area flow rounds [default = %d]\n", pPars->nRounds );
    Abc_Print( -2, "\t-A num   : the number of exact area rounds [default = %d]\n", pPars->nRoundsEla );
    Abc_Print( -2, "\t-R num   : the delay relaxation ratio (num >= 0) [default = %d]\n", pPars->nRelaxRatio );
    Abc_Print( -2, "\t-L num   : the fanout limit for coarsening XOR/MUX (num >= 2) [default = %d]\n", pPars->nCoarseLimit );
    Abc_Print( -2, "\t-E num   : the area/edge tradeoff parameter (0 <= num <= 100) [default = %d]\n", pPars->nAreaTuner );
    Abc_Print( -2, "\t-D num   : sets the delay constraint for the mapping [default = %s]\n", Buffer );
    Abc_Print( -2, "\t-N num   : delay of the first LUT [default = %d]\n", pPars->nDelayLut1 );
    Abc_Print( -2, "\t-M num   : delay of the second LUT [default = %d]\n", pPars->nDelayLut2 );
    Abc_Print( -2, "\t-Q num   : the number of fast non-routable edges [default = %d]\n", pPars->nFastEdges );
    Abc_Print( -2, "\t-e       : toggles edge vs node minimization [default = %s]\n", pPars->fOptEdge? "yes": "no" );
    Abc_Print( -2, "\t-k       : toggles coarsening the subject graph [default = %s]\n", pPars->fCoarsen? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggles cut minimization [default = %s]\n", pPars->fCutMin? "yes": "no" );
    Abc_Print( -2, "\t-p       : toggles power-aware cut selection heuristics [default = %s]\n", pPars->fPower? "yes": "no" );
    Abc_Print( -2, "\t-g       : toggles generating AIG without mapping [default = %s]\n", pPars->fPureAig? "yes": "no" );
    Abc_Print( -2, "\t-t       : toggles optimizing average rather than maximum level [default = %s]\n", pPars->fDoAverage? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggles very verbose output [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Simap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Mio_IntallSimpleLibrary();
    extern int Gia_ManSimpleMapping( Gia_Man_t * p, int nBound, int Seed, int nBTLimit, int nTimeout, int fVerbose, int fKeepFile, int argc, char ** argv );
    int c, Seed = 0, nBTLimit = 0, nBound = 0, nTimeout = 0, fKeepFile = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "BRCTfvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nBound = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBound < 0 )
            {
                Abc_Print( -1, "Bound on a solution should be a positive integer.\n" );
                goto usage;
            }
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimit < 0 )
            {
                Abc_Print( -1, "Conflict limit should be a positive integer.\n" );
                goto usage;
            }
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nTimeout = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;            
        case 'f':
            fKeepFile ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    Mio_IntallSimpleLibrary();
    if ( !Gia_ManSimpleMapping( pAbc->pGia, nBound, Seed, nBTLimit, nTimeout, fVerbose, fKeepFile, argc, argv ) )
        printf( "Simple mapping has failed.\n" );
    return 0;

usage:
    Abc_Print( -2, "usage: &simap [-BRCT num] [-fvh]\n" );
    Abc_Print( -2, "\t           performs simple mapping of the AIG\n" );
    Abc_Print( -2, "\t-B num   : the bound on the solution size [default = %d]\n", nBound );
    Abc_Print( -2, "\t-R num   : random number generator seed [default = %d]\n", Seed );
    Abc_Print( -2, "\t-C num   : the conflict limit [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-T num   : runtime limit in seconds [default = %d]\n", nTimeout );    
    Abc_Print( -2, "\t-f       : toggles keeping the intermediate CNF file [default = %s]\n", fKeepFile? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Exmap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Mio_IntallSimpleLibrary2();
    extern Gia_Man_t * Gia_ManKSatMapping( word Truth, int nIns, int nNodes, int nBound, int Seed, int fMultiLevel, int nBTLimit, int nTimeout, int fVerbose, int fKeepFile, int argc, char ** argv, char * pGuide );
    Gia_Man_t * pTemp = NULL; char * pTruth = NULL, * pGuide = NULL; word Truth = 0;
    int c, nVars = 0, nNodes = 0, nVars2, Seed = 0, nBTLimit = 0, nBound = 0, fMultiLevel = 0, nTimeout = 0, fKeepFile = 0, fVerbose = 0; 
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NBRCTSmfvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nNodes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodes < 0 )
            {
                Abc_Print( -1, "Bound on a solution should be a positive integer.\n" );
                goto usage;
            }
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nBound = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBound < 0 )
            {
                Abc_Print( -1, "Bound on a solution should be a positive integer.\n" );
                goto usage;
            }
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimit < 0 )
            {
                Abc_Print( -1, "Conflict limit should be a positive integer.\n" );
                goto usage;
            }
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nTimeout = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;            
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a file name.\n" );
                goto usage;
            }
            pGuide = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'm':
            fMultiLevel ^= 1;
            break;
        case 'f':
            fKeepFile ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Truth table should be given on the command line.\n" );
        return 1;
    }
    pTruth = argv[globalUtilOptind];
    nVars = Abc_Base2Log(4*strlen(pTruth));
    if ( (1 << nVars) != 4*strlen(pTruth) ) 
    {
        Abc_Print( -1, "The string (%s) does not look like a hex truth table.\n", pTruth );
        return 1;
    }
    if ( nVars > 6 ) 
    {
        Abc_Print( -1, "Currently only works for functions of 6 of fewer inputs.\n" );
        return 1;
    }
    if ( nNodes == 0 )
    {
        Abc_Print( -1, "The number of nodes should be given on the command line (-N <num>).\n" );
        return 1;
    }
    nVars2 = Abc_TtReadHex( &Truth, pTruth );
    assert( nVars2 == nVars );
    pTemp = Gia_ManKSatMapping( Truth, nVars, nNodes, nBound, Seed, fMultiLevel, nBTLimit, nTimeout, fVerbose, fKeepFile, argc, argv, pGuide );
    if ( pTemp )  {
        //Mio_IntallSimpleLibrary2();
        Abc_FrameUpdateGia( pAbc, pTemp );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &exmap [-NBRCT num] [-S str] [-mfvh] <truth>\n" );
    Abc_Print( -2, "\t           performs simple mapping of the truth table\n" );
    Abc_Print( -2, "\t-N num   : the number of nodes [default = %d]\n", nNodes );
    Abc_Print( -2, "\t-B num   : the bound on the solution size [default = %d]\n", nBound );
    Abc_Print( -2, "\t-R num   : random number generator seed [default = %d]\n", Seed );
    Abc_Print( -2, "\t-C num   : the conflict limit [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-T num   : runtime limit in seconds [default = %d]\n", nTimeout );    
    Abc_Print( -2, "\t-S str   : structural guidance from the user [default = %s]\n", pGuide ? pGuide : "unknown" );  
    Abc_Print( -2, "\t-m       : toggles using multi-level primitives [default = %s]\n", fMultiLevel? "yes": "no" );
    Abc_Print( -2, "\t-f       : toggles keeping the intermediate CNF file [default = %s]\n", fKeepFile? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SymFun( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManGenSymFun( Vec_Wrd_t * vFuns, int nChars, int fVerbose );
    Gia_Man_t * pNew = NULL;
    Vec_Wrd_t * vFuns = NULL;
    int c, nChars = 0, nMaj = 0, nHot = 0, nXor = 0, nWgt = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "MHXWvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a file name.\n" );
                goto usage;
            }
            nMaj = atoi(argv[globalUtilOptind++]);
            break;
        case 'H':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-H\" should be followed by a file name.\n" );
                goto usage;
            }
            nHot = atoi(argv[globalUtilOptind++]);
            break;
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by a file name.\n" );
                goto usage;
            }
            nXor = atoi(argv[globalUtilOptind++]);
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by a file name.\n" );
                goto usage;
            }
            nWgt = atoi(argv[globalUtilOptind++]);
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( nMaj ) {
        nChars = nMaj+1;
        vFuns = Vec_WrdAlloc(1);
        Vec_WrdPush( vFuns, Abc_Tt6Mask(nMaj/2+1) << (nMaj/2+1) );        
    }
    else if ( nHot ) {
        nChars = nHot+1;
        vFuns = Vec_WrdAlloc(1);
        Vec_WrdPush( vFuns, 2 );        
    }
    else if ( nXor ) {
        nChars = nXor+1;
        vFuns = Vec_WrdAlloc(1);
        Vec_WrdPush( vFuns, s_Truths6[0] & Abc_Tt6Mask(nChars) );        
    }
    else if ( nWgt ) {
        int nOuts = Abc_Base2Log(nWgt+1);
        nChars = nWgt+1;
        vFuns = Vec_WrdAlloc(nOuts);
        for ( int i = 0; i < nOuts; i++ )
            Vec_WrdPush( vFuns, s_Truths6[i] & Abc_Tt6Mask(nChars) );        
    }
    else {
        if ( argc == globalUtilOptind ) {
            printf( "One or more characteristic strings should be given on the command line.\n" );
            return 0;
        }
        nChars = (int)strlen(argv[globalUtilOptind]);
        for ( c = globalUtilOptind+1; c < argc; c++ )
            if ( nChars != (int)strlen(argv[c]) ) {
                printf( "Char strings have different lengths. Quitting.\n" );
                return 0;            
            }
        vFuns = Vec_WrdAlloc( argc );
        for ( c = globalUtilOptind; c < argc; c++ )
            Vec_WrdPush( vFuns, Abc_TtReadBin64(argv[c]) );
    }
    if ( nChars > 64 ) {
        printf( "Currently can handle functions up to 63 inputs. Quitting.\n" );
        return 0;
    }
    pNew = Gia_ManGenSymFun( vFuns, nChars, fVerbose );
    Abc_FrameUpdateGia( pAbc, pNew );
    Vec_WrdFree( vFuns );
    return 0;

usage:
    Abc_Print( -2, "usage: &symfun [-MHXW num] [-vh] <str0> <str1> ... <str(N-1)>\n" );
    Abc_Print( -2, "\t           derives AIG of a multi-output symmetric function\n" );
    Abc_Print( -2, "\t-M <num> : generate the majority gate with the given input count [default = unused]\n" );
    Abc_Print( -2, "\t-H <num> : generate the 1-hot condition with the given input count [default = unused]\n" );
    Abc_Print( -2, "\t-X <num> : generate the xor-gate with the given input count [default = unused]\n" );
    Abc_Print( -2, "\t-W <num> : generate the weight(W) function with the given input count [default = unused]\n" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    Abc_Print( -2, "\t<str0> <str1> ... <str(N-1)> : char strings in binary notation LSB first\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Pack( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManLutPacking( Gia_Man_t * p, int nBlock, int DelayRoute, int DelayDir, int fVerbose );
    int c, nBlock = 2, DelayRoute = 10, DelayDir = 2, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NRDvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nBlock = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBlock < 2 )
            {
                Abc_Print( -1, "LUT block size (%d) should be more than 1.\n", nBlock );
                goto usage;
            }
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer.\n" );
                goto usage;
            }
            DelayRoute = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( DelayRoute <= 0 )
            {
                Abc_Print( -1, "Rounting delay (%d) should be more than 0.\n", DelayRoute);
                goto usage;
            }
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a positive integer.\n" );
                goto usage;
            }
            DelayDir = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( DelayDir <= 0 )
            {
                Abc_Print( -1, "Direct delay (%d) should be more than 0.\n", DelayRoute);
                goto usage;
            }
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }

    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Current AIG has no mapping. Run \"&if\".\n" );
        return 1;
    }
    if ( Gia_ManLutSizeMax(pAbc->pGia) > 6 )
        Abc_Print( 0, "Current AIG has mapping into %d-LUTs.\n", Gia_ManLutSizeMax(pAbc->pGia) );
    else
        Gia_ManLutPacking( pAbc->pGia, nBlock, DelayRoute, DelayDir, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &pack [-NRD num] [-vh]\n" );
    Abc_Print( -2, "\t           performs packing for the LUT mapped network\n" );
    Abc_Print( -2, "\t-N num   : the number of LUTs in the block [default = %d]\n", nBlock );
    Abc_Print( -2, "\t-R num   : the routable delay of a LUT [default = %d]\n", DelayRoute );
    Abc_Print( -2, "\t-D num   : the direct (non-routable) delay of a LUT [default = %d]\n", DelayDir );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Edge( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Edg_ManAssignEdgeNew( Gia_Man_t * p, int nEdges, int fVerbose );
    extern void Seg_ManComputeDelay( Gia_Man_t * pGia, int Delay, int nFanouts, int fTwo, int fVerbose );
    extern void Sle_ManExplore( Gia_Man_t * pGia, int nBTLimit, int DelayInit, int fDynamic, int fTwoEdges, int fVerbose );

    int c, nBTLimit = 0, DelayMax = 0, nFanouts = 0, nEdges = 1, fReverse = 0, fUsePack = 0, fUseOld = 0, fMapping = 0, fDynamic = 1, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CDFErpomdvh" ) ) != EOF )
    {
        switch ( c )
        {
            case 'C':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                    goto usage;
                }
                nBTLimit = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                break;
            case 'D':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-D\" should be followed by a positive integer.\n" );
                    goto usage;
                }
                DelayMax = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                break;
            case 'F':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-F\" should be followed by a positive integer.\n" );
                    goto usage;
                }
                nFanouts = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                break;
            case 'E':
                if ( globalUtilOptind >= argc )
                {
                    Abc_Print( -1, "Command line switch \"-E\" should be followed by a positive integer.\n" );
                    goto usage;
                }
                nEdges = atoi(argv[globalUtilOptind]);
                globalUtilOptind++;
                if ( nEdges != 1 && nEdges != 2 )
                {
                    Abc_Print( -1, "Edge limit (%d) should be 1 or 2.\n", nEdges );
                    goto usage;
                }
                break;
            case 'r':
                fReverse ^= 1;
                break;
            case 'p':
                fUsePack ^= 1;
                break;
            case 'o':
                fUseOld ^= 1;
                break;
            case 'm':
                fMapping ^= 1;
                break;
            case 'd':
                fDynamic ^= 1;
                break;
            case 'v':
                fVerbose ^= 1;
                break;
            case 'h':
            default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( fMapping )
    {
        Sle_ManExplore( pAbc->pGia, nBTLimit, DelayMax, fDynamic, nEdges==2, fVerbose );
        return 0;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Current AIG has no mapping. Run \"&if\".\n" );
        return 1;
    }
    if ( Gia_ManLutSizeMax(pAbc->pGia) > 6 )
    {
        Abc_Print( 0, "Current AIG has mapping into %d-LUTs.\n", Gia_ManLutSizeMax(pAbc->pGia) );
        return 0;
    }
    if ( fUsePack )
    {
        if ( pAbc->pGia->vPacking == NULL )
        {
            Abc_Print( -1, "Packing information is not present.\n" );
            return 0;
        }
        Gia_ManConvertPackingToEdges( pAbc->pGia );
        return 0;
    }
    if ( !fUseOld )
    {
        //Edg_ManAssignEdgeNew( pAbc->pGia, nEdges, fVerbose );
        Seg_ManComputeDelay( pAbc->pGia, DelayMax, nFanouts, nEdges==2, fVerbose );
        return 0;
    }
    if ( pAbc->pGia->pManTime && fReverse )
    {
        Abc_Print( 0, "Reverse computation does not work when boxes are present.\n" );
        return 0;
    }
    if ( fReverse )
        DelayMax = Gia_ManComputeEdgeDelay2( pAbc->pGia );
    else
        DelayMax = Gia_ManComputeEdgeDelay( pAbc->pGia, nEdges == 2 );
    //printf( "The number of edges = %d.  Delay = %d.\n", Gia_ManEvalEdgeCount(pAbc->pGia), DelayMax );
    return 0;

usage:
    Abc_Print( -2, "usage: &edge [-CDFE num] [-rpomdvh]\n" );
    Abc_Print( -2, "\t           find edge assignment of the LUT-mapped network\n" );
    Abc_Print( -2, "\t-C num   : the SAT solver conflict limit (0 = unused) [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-D num   : the upper bound on delay [default = %d]\n", DelayMax );
    Abc_Print( -2, "\t-F num   : skip using edge if fanout higher than this [default = %d]\n", nFanouts );
    Abc_Print( -2, "\t-E num   : the limit on the number of edges (1 <= num <= 2) [default = %d]\n", nEdges );
    Abc_Print( -2, "\t-r       : toggles using reverse order [default = %s]\n", fReverse? "yes": "no" );
    Abc_Print( -2, "\t-p       : toggles deriving edges from packing [default = %s]\n", fUsePack? "yes": "no" );
    Abc_Print( -2, "\t-o       : toggles using old algorithm [default = %s]\n", fUseOld? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggles combining edge assignment with mapping [default = %s]\n", fMapping? "yes": "no" );
    Abc_Print( -2, "\t-d       : toggles dynamic addition of clauses [default = %s]\n", fDynamic? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SatLut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManLutSat( Gia_Man_t * p, int LutSize, int nNumber, int nImproves, int nBTLimit, int DelayMax, int nEdges, int fDelay, int fReverse, int fVerbose, int fVeryVerbose );
    int c, LutSize = 0, nNumber = 32, nImproves = 0, nBTLimit = 100, DelayMax = 0, nEdges = 0;
    int fDelay = 0, fReverse = 0, fVeryVerbose = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NICDQdrwvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nNumber = atoi(argv[globalUtilOptind]);
            if ( nNumber > 128 )
            {
                Abc_Print( -1, "The number of AIG nodes should not exceed 128.\n" );
                goto usage;
            }
            globalUtilOptind++;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nImproves = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a positive integer.\n" );
                goto usage;
            }
            DelayMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nEdges = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'd':
            fDelay ^= 1;
            break;
        case 'r':
            fReverse ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }

    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Current AIG has no mapping. Run \"&if\".\n" );
        return 1;
    }
    LutSize = Gia_ManLutSizeMax(pAbc->pGia);
    if ( LutSize > 6 )
        Abc_Print( 0, "Current AIG is mapped into %d-LUTs (only 6-LUT mapping is currently supported).\n", Gia_ManLutSizeMax(pAbc->pGia) );
    else
        Gia_ManLutSat( pAbc->pGia, LutSize, nNumber, nImproves, nBTLimit, DelayMax, nEdges, fDelay, fReverse, fVerbose, fVeryVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &satlut [-NICDQ num] [-drwvh]\n" );
    Abc_Print( -2, "\t           performs SAT-based remapping of the LUT-mapped network\n" );
    Abc_Print( -2, "\t-N num   : the limit on AIG nodes in the window (num <= 128) [default = %d]\n", nNumber );
    Abc_Print( -2, "\t-I num   : the limit on the number of improved windows [default = %d]\n", nImproves );
    Abc_Print( -2, "\t-C num   : the limit on the number of conflicts [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-D num   : the user-specified required times at the outputs [default = %d]\n", DelayMax );
    Abc_Print( -2, "\t-Q num   : the maximum number of edges [default = %d]\n", nEdges );
    Abc_Print( -2, "\t-d       : toggles delay optimization [default = %s]\n", fDelay? "yes": "no" );
    Abc_Print( -2, "\t-r       : toggles using reverse search [default = %s]\n", fReverse? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9LNetRead( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Vec_WrdReadTest( char * pFileName );
    extern void Gia_ManReadSimInfoInputs( char * pFileName, char * pFileOut1, int fVerbose );
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 2 ) // read 1 file, write 1 file
    {
        Gia_ManReadSimInfoInputs( argv[globalUtilOptind], argv[globalUtilOptind+1], fVerbose );
        return 0;
    }
    if ( strstr(argv[globalUtilOptind], ".v") )
    {
        Gia_Man_t * pNew = Vec_WrdReadTest( argv[globalUtilOptind] );
        if ( pNew == NULL )
        {
            printf( "Cannot read network from file \"%s\".\n", argv[globalUtilOptind] );
            return 0;
        }
        Abc_FrameUpdateGia( pAbc, pNew );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &lnetread [-vh] <file> <file2>\n" );
    Abc_Print( -2, "\t           reads and converts the network or the simulation data\n" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    Abc_Print( -2, "\t<file>   : input file name with simulation information\n");
    Abc_Print( -2, "\t<file2>  : output file name with simulation information\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9LNetSim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManSimInfoPassTest( Gia_Man_t * p, char * pFileName, char * pFileName2, int fVerbose );
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( argc != globalUtilOptind + 2 )
    {
        Abc_Print( -1, "Expecting two file names on the command line.\n" );
        return 1;
    }
    Gia_ManSimInfoPassTest( pAbc->pGia, argv[globalUtilOptind], argv[globalUtilOptind+1], fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &lnetsim [-vh] <file> <file2>\n" );
    Abc_Print( -2, "\t           performs specialized AIG simulation\n" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    Abc_Print( -2, "\t<file>   : input file name with simulation information\n");
    Abc_Print( -2, "\t<file2>  : output file name with simulation information\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9LNetEval( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManSimInfoEval( Gia_Man_t * p, char * pFileName, char * pFileName2, int nOuts, int fVerbose );
    int c, nOuts = -1, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nOuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( argc != globalUtilOptind + 2 )
    {
        Abc_Print( -1, "Expecting two file names on the command line.\n" );
        return 1;
    }
    Gia_ManSimInfoEval( pAbc->pGia, argv[globalUtilOptind], argv[globalUtilOptind+1], nOuts, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &lneteval [-O num] [-vh] <file> <file2>\n" );
    Abc_Print( -2, "\t           performs testing of the AIG on the simulation data\n" );
    Abc_Print( -2, "\t-O num   : the output group size [default = %d]\n",  nOuts );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    Abc_Print( -2, "\t<file>   : file name with simulation information\n");
    Abc_Print( -2, "\t<file2>  : file name with simulation information\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9LNetOpt( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManPerformLNetOpt( Gia_Man_t * p, int fTryNew, char * pFileName, int nIns, int nOuts, int Thresh, int nRounds, int fVerbose );
    extern Gia_Man_t * Gia_ManPerformLNetOptNew( Gia_Man_t * p, char * pFileName, int nIns, int nOuts, int Thresh, int nRounds, int fVerbose );
    Gia_Man_t * pTemp;
    char * pFileName = NULL;
    int c, nIns = 6, nOuts = 2, Limit = 0, nRounds = 20, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IORXvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nIns = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nOuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by a positive integer.\n" );
                goto usage;
            }
            Limit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( argc > globalUtilOptind + 1 )
    {
        return 0;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( argc == globalUtilOptind + 1 )
    {
        FILE * pFile = fopen( argv[globalUtilOptind], "rb" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9BCore(): Cannot open file \"%s\" for reading the simulation information.\n", argv[globalUtilOptind] );
            return 0;
        }
        fclose( pFile );
        pFileName = argv[globalUtilOptind];
    }
    pTemp = Gia_ManPerformLNetOptNew( pAbc->pGia, pFileName, nIns, nOuts, Limit, nRounds, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &lnetopt [-IORX num] [-vh] <file>\n" );
    Abc_Print( -2, "\t           performs specialized AIG optimization\n" );
    Abc_Print( -2, "\t-I num   : the input support size [default = %d]\n",                 nIns );
    Abc_Print( -2, "\t-O num   : the output group size [default = %d]\n",                  nOuts );
    Abc_Print( -2, "\t-R num   : patterns are cares starting this value [default = %d]\n", Limit );
    Abc_Print( -2, "\t-X num   : the number of optimization rounds [default = %d]\n",      nRounds );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n",                 fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    Abc_Print( -2, "\t<file>   : file name with simulation information\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Ttopt( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    char * pFileName = NULL;
    int c, nIns = 6, nOuts = 2, Limit = 0, nRounds = 20, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IORXvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nIns = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nOuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by a positive integer.\n" );
                goto usage;
            }
            Limit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nRounds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( argc > globalUtilOptind + 1 )
    {
        return 0;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( argc == globalUtilOptind + 1 )
    {
        FILE * pFile = fopen( argv[globalUtilOptind], "rb" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9BCore(): Cannot open file \"%s\" for reading the simulation information.\n", argv[globalUtilOptind] );
            return 0;
        }
        fclose( pFile );
        pFileName = argv[globalUtilOptind];
    }
    if ( pFileName )
        pTemp = Gia_ManTtoptCare( pAbc->pGia, nIns, nOuts, nRounds, pFileName, Limit );
    else
        pTemp = Gia_ManTtopt( pAbc->pGia, nIns, nOuts, nRounds );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &ttopt [-IORX num] [-vh] <file>\n" );
    Abc_Print( -2, "\t           performs specialized AIG optimization\n" );
    Abc_Print( -2, "\t-I num   : the input support size [default = %d]\n",                 nIns );
    Abc_Print( -2, "\t-O num   : the output group size [default = %d]\n",                  nOuts );
    Abc_Print( -2, "\t-R num   : patterns are cares starting this value [default = %d]\n", Limit );
    Abc_Print( -2, "\t-X num   : the number of optimization rounds [default = %d]\n",      nRounds );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n",                 fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    Abc_Print( -2, "\t<file>   : file name with simulation information\n");
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t           This command was contributed by Yukio Miyasaka.\n" );
    Abc_Print( -2, "\t           The paper describing the method: Y. Miyasaka et al. \"Synthesizing\n" );
    Abc_Print( -2, "\t           a class of practical Boolean functions using truth tables\". Proc. IWLS 2022.\n" );
    Abc_Print( -2, "\t           https://people.eecs.berkeley.edu/~alanmi/publications/2022/iwls22_reo.pdf\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Transduction( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp, * pExdc = NULL;
    int c, nType = 1, fMspf = 0, nRandom = 0, nSortType = 0, nPiShuffle = 0, nParameter = 0, fLevel = 0, fTruth = 0, fNewLine = 0, nVerbose = 2;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "TSIPRVtmnlh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nType = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nRandom = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nSortType = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nPiShuffle = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nParameter = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 't':
            fTruth ^= 1;
            break;
        case 'm':
            fMspf ^= 1;
            break;
        case 'n':
            fNewLine ^= 1;
            break;
        case 'l':
            fLevel ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( argc > globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( argc == globalUtilOptind + 1 )
    {
        FILE * pFile = fopen( argv[globalUtilOptind], "rb" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Cannot open input file \"%s\". ", argv[globalUtilOptind] );
            return 1;
        }
        fclose( pFile );
        pExdc = Gia_AigerRead( argv[globalUtilOptind], 0, 0, 0 );
        if ( pExdc == NULL )
        {
            Abc_Print( -1, "Reading AIGER has failed.\n" );
            return 1;
        }
    }

    if ( fLevel && (nType == 3 || nType == 8) )
    {
        Abc_Print( -1, "Level preserving optimization does not work with transduction type 3 and 8.\n" );
        return 1;
    }

    if ( fTruth )
        pTemp = Gia_ManTransductionTt( pAbc->pGia, nType, fMspf, nRandom, nSortType, nPiShuffle, nParameter, fLevel, pExdc, fNewLine, nVerbose );
    else
        pTemp = Gia_ManTransductionBdd( pAbc->pGia, nType, fMspf, nRandom, nSortType, nPiShuffle, nParameter, fLevel, pExdc, fNewLine, nVerbose );
    if ( pExdc != NULL )
        Gia_ManStop( pExdc );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &transduction [-TSIPRV num] [-bmlh] <file>\n" );
    Abc_Print( -2, "\t           performs transduction-based AIG optimization\n" );
    Abc_Print( -2, "\t-T num   : transduction type [default = %d]\n", nType );
    Abc_Print( -2, "\t                0: remove simply redundant nodes\n" );
    Abc_Print( -2, "\t                1: Resub\n" );
    Abc_Print( -2, "\t                2: ResubMono\n" );
    Abc_Print( -2, "\t                3: ResubShared\n" );
    Abc_Print( -2, "\t                4: repeat Resub\n" );
    Abc_Print( -2, "\t                5: repeat ResubMono\n" );
    Abc_Print( -2, "\t                6: script RepeatInner\n" );
    Abc_Print( -2, "\t                7: script RepeatOuter\n" );
    Abc_Print( -2, "\t                8: script RepeatAll\n" );
    Abc_Print( -2, "\t-S num   : fanin sort type [default = %d]\n", nSortType );
    Abc_Print( -2, "\t                0: topological order\n" );
    Abc_Print( -2, "\t                1: number of ones\n" );
    Abc_Print( -2, "\t                2: number of ones before complemented edges\n" );
    Abc_Print( -2, "\t                3: pseudo random\n" );
    Abc_Print( -2, "\t                4: no sorting\n" );
    Abc_Print( -2, "\t-I num   : random seed to shuffle PIs (0 = no shuffle) [default = %d]\n", nPiShuffle );
    Abc_Print( -2, "\t-P num   : parameters for scripts [default = %d]\n", nParameter );
    Abc_Print( -2, "\t-R num   : random seed to set all parameters (0 = no random) ([default = %d]\n", nRandom );
    Abc_Print( -2, "\t-V num   : verbosity level [default = %d]\n", nVerbose );
    Abc_Print( -2, "\t-t       : toggles using truth table instead of BDD [default = %s]\n", fTruth? "yes": "no" );
    Abc_Print( -2, "\t-m       : toggles using MSPF instead of CSPF [default = %s]\n", fMspf? "yes": "no" );
    Abc_Print( -2, "\t-n       : toggles printing with a new line [default = %s]\n", fNewLine? "yes": "no" );
    Abc_Print( -2, "\t-l       : toggles level preserving optimization [default = %s]\n", fLevel? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n" );
    Abc_Print( -2, "\t<file>   : AIGER specifying external don't-cares\n" );
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t           This command was contributed by Yukio Miyasaka.\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9TranStoch( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManTranStoch( Gia_Man_t * pGia, int nRestarts, int nHops, int nSeedBase, int fMspf, int fMerge, int fResetHop, int fZeroCostHop, int fRefactor, int fTruth, int fSingle, int fOriginalOnly, int fNewLine, Gia_Man_t * pExdc, int nThreads, int nVerbose );
    Gia_Man_t * pTemp, * pExdc = NULL;
    int c, nRestarts = 0, nHops = 10, nSeedBase = 0, fMspf = 1, fMerge = 1, fResetHop = 1, fZeroCostHop = 0, fRefactor = 0, fTruth = 0, fSingle = 0, fOriginalOnly = 0, fNewLine = 0, nThreads = 1, nVerbose = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NMRPVmgrzftsonh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nRestarts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nHops = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nSeedBase = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nThreads = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'm':
            fMspf ^= 1;
            break;
        case 'g':
            fMerge ^= 1;
            break;
        case 'r':
            fResetHop ^= 1;
            break;
        case 'z':
            fZeroCostHop ^= 1;
            break;
        case 'f':
            fRefactor ^= 1;
            break;
        case 't':
            fTruth ^= 1;
            break;
        case 's':
            fSingle ^= 1;
            break;
        case 'o':
            fOriginalOnly ^= 1;
            break;
        case 'n':
            fNewLine ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( argc > globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( argc == globalUtilOptind + 1 )
    {
        FILE * pFile = fopen( argv[globalUtilOptind], "rb" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Cannot open input file \"%s\". ", argv[globalUtilOptind] );
            return 1;
        }
        fclose( pFile );
        pExdc = Gia_AigerRead( argv[globalUtilOptind], 0, 0, 0 );
        if ( pExdc == NULL )
        {
            Abc_Print( -1, "Reading AIGER has failed.\n" );
            return 1;
        }
    }

    pTemp = Gia_ManTranStoch( pAbc->pGia, nRestarts, nHops, nSeedBase, fMspf, fMerge, fResetHop, fZeroCostHop, fRefactor, fTruth, fSingle, fOriginalOnly, fNewLine, pExdc, nThreads, nVerbose );
    if ( pExdc != NULL )
        Gia_ManStop( pExdc );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &transtoch [-NMRPV num] [-mgrzftsonh] <file>\n" );
    Abc_Print( -2, "\t           iterates transduction with randomized parameters\n" );
    Abc_Print( -2, "\t-N num   : number of restarts [default = %d]\n", nRestarts );
    Abc_Print( -2, "\t-M num   : number of hops (if; mfs2; strash) [default = %d]\n", nHops );
    Abc_Print( -2, "\t-R num   : random seed [default = %d]\n", nSeedBase );
    Abc_Print( -2, "\t-P num   : number of threads [default = %d]\n", nThreads );
    Abc_Print( -2, "\t-V num   : verbosity level [default = %d]\n", nVerbose);
    Abc_Print( -2, "\t-m       : toggles using MSPF instead of CSPF [default = %s]\n", fMspf? "yes": "no" );
    Abc_Print( -2, "\t-g       : toggles using ResubShared [default = %s]\n", fMerge? "yes": "no" );
    Abc_Print( -2, "\t-r       : toggles resetting hop count when new minimum is found [default = %s]\n", fResetHop? "yes": "no" );
    Abc_Print( -2, "\t-z       : toggles using \"drf -z\" instead of \"if;mfs2;st\" for hop [default = %s]\n", fZeroCostHop? "yes": "no" );
    Abc_Print( -2, "\t-f       : toggles using \"drf -z\" instead of \"&dc2\" for ite [default = %s]\n", fRefactor? "yes": "no" );
    Abc_Print( -2, "\t-t       : toggles using truth table instead of BDD [default = %s]\n", fTruth? "yes": "no" );
    Abc_Print( -2, "\t-s       : toggles starting from the smallest starting point [default = %s]\n", fSingle? "yes": "no" );
    Abc_Print( -2, "\t-o       : toggles starting from the given AIG [default = %s]\n", fOriginalOnly? "yes": "no" );
    Abc_Print( -2, "\t-n       : toggles printing with a new line [default = %s]\n", fNewLine? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n" );
    Abc_Print( -2, "\t<file>   : AIGER specifying external don't-cares\n" );
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t           This command was contributed by Yukio Miyasaka.\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Rrr( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t *pNew;
    int c;
    int iSeed = 0, nWords = 10, nTimeout = 0, nSchedulerVerbose = 0, nPartitionerVerbose = 0, nOptimizerVerbose = 0, nAnalyzerVerbose = 0, nSimulatorVerbose = 0, nSatSolverVerbose = 0, fUseBddCspf = 0, fUseBddMspf = 0, nConflictLimit = 0, nSortType = -1, nOptimizerFlow = 0, nSchedulerFlow = 0, nPartitionType = 0, nDistance = 0, nJobs = 1, nThreads = 1, nPartitionSize = 0, nPartitionSizeMin = 0, fDeterministic = 1, nParallelPartitions = 1, fOptOnInsert = 0, fGreedy = 1;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "XYZNJKLBDRWTCGVPOAQSabdegh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'X':
            nOptimizerFlow = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'Y':
            nSchedulerFlow = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'Z':
            nPartitionType = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'N':
            nJobs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'J':
            nThreads = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'K':
            nPartitionSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'L':
            nPartitionSizeMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'B':
            nParallelPartitions = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'D':
            nDistance = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'R':
            iSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'W':
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'T':
            nTimeout = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'C':
            nConflictLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'G':
            nSortType = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'V':
            nSchedulerVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'P':
            nPartitionerVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'O':
            nOptimizerVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'A':
            nAnalyzerVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'Q':
            nSimulatorVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'S':
            nSatSolverVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'a':
            fUseBddCspf ^= 1;
            break;
        case 'b':
            fUseBddMspf ^= 1;
            break;
        case 'd':
            fDeterministic ^= 1;
            break;
        case 'e':
            fOptOnInsert ^= 1;
            break;
        case 'g':
            fGreedy ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( argc > globalUtilOptind ) {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }

    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    
    if ( nSchedulerVerbose )
    {
        Abc_Print( 2, "Using the following parameters :\n" );
        Abc_Print( 2, "\t-X %3d : method ", nOptimizerFlow );
        switch( nOptimizerFlow )
        {
        case 0:
            Abc_Print( 2, "(0 = single-add resub)" );
            break;
        case 1:
            Abc_Print( 2, "(1 = multi-add resub)" );
            break;
        case 2:
            Abc_Print( 2, "(2 = repeat single-add and multi-add resubs)" );
            break;
        case 3:
            Abc_Print( 2, "(3 = random one meaningful resub)" );
            break;
        }
        Abc_Print( 2, "\n" );
        Abc_Print( 2, "\t-Y %3d : flow ", nSchedulerFlow );
        switch ( nSchedulerFlow )
        {
        case 0:
            Abc_Print( 2, "(0 = apply method once)" );
            break;
        case 1:
            Abc_Print( 2, "(1 = iterate like transtoch)" );
            break;
        case 2:
            Abc_Print( 2, "(2 = iterate like deepsyn)" );
            break;
        }
        Abc_Print( 2, "\n" );
        Abc_Print( 2, "\t-N %3d : number of jobs to create by restarting or partitioning\n", nJobs );
        Abc_Print( 2, "\t-J %3d : number of threads\n", nThreads );
        Abc_Print( 2, "\t-K %3d : maximum partition size (0 = no partitioning)\n", nPartitionSize );
        Abc_Print( 2, "\t-L %3d : minimum partition size\n", nPartitionSizeMin );
        Abc_Print( 2, "\t-B %3d : maximum number of partitions to optimize in parallel\n", nParallelPartitions );
        Abc_Print( 2, "\t-R %3d : random number generator seed\n", iSeed );
        Abc_Print( 2, "\t-T %3d : timeout in seconds (0 = no timeout)\n", nTimeout );
        Abc_Print( 2, "\t-C %3d : conflict limit (0 = no limit)\n", nConflictLimit );
        Abc_Print( 2, "Use command line switch \"-h\" to see more options\n\n" );
    }
    
    pNew = Gia_ManRrr( pAbc->pGia, iSeed, nWords, nTimeout, nSchedulerVerbose, nPartitionerVerbose, nOptimizerVerbose, nAnalyzerVerbose, nSimulatorVerbose, nSatSolverVerbose, fUseBddCspf, fUseBddMspf, nConflictLimit, nSortType, nOptimizerFlow, nSchedulerFlow, nPartitionType, nDistance, nJobs, nThreads, nPartitionSize, nPartitionSizeMin, fDeterministic, nParallelPartitions, fOptOnInsert, fGreedy );

    Abc_FrameUpdateGia( pAbc, pNew );
    
    return 0;

usage:
      Abc_Print( -2, "usage: rrr [-XYZNJKLBDRWTCGVPOAQS num] [-abdegh]\n" );
      Abc_Print( -2, "\t        perform optimization\n" );
      Abc_Print( -2, "\t-X num : method [default = %d]\n", nOptimizerFlow );
      Abc_Print( -2, "\t                0: single-add resub\n" );
      Abc_Print( -2, "\t                1: multi-add resub\n" );
      Abc_Print( -2, "\t                2: repeat 0 and 1\n" );
      Abc_Print( -2, "\t                3: random one meaningful resub\n" );
      Abc_Print( -2, "\t-Y num : flow [default = %d]\n", nSchedulerFlow );
      Abc_Print( -2, "\t                0: apply method once\n" );
      Abc_Print( -2, "\t                1: iterate like transtoch\n" );
      Abc_Print( -2, "\t                2: iterate like deepsyn\n" );
      Abc_Print( -2, "\t-Z num : partition [default = %d]\n", nPartitionType );
      Abc_Print( -2, "\t                0: distance base\n" );
      Abc_Print( -2, "\t                1: level base\n" );
      Abc_Print( -2, "\t-N num : number of jobs to create by restarting or partitioning [default = %d]\n", nJobs );
      Abc_Print( -2, "\t-J num : number of threads [default = %d]\n", nThreads );
      Abc_Print( -2, "\t-K num : maximum partition size (0 = no partitioning) [default = %d]\n", nPartitionSize );
      Abc_Print( -2, "\t-L num : minimum partition size [default = %d]\n", nPartitionSizeMin );
      Abc_Print( -2, "\t-B num : maximum number of partitions in parallel [default = %d]\n", nParallelPartitions );
      Abc_Print( -2, "\t-D num : maximum distance between node and new fanin (0 = no limit) [default = %d]\n", nDistance );
      Abc_Print( -2, "\t-R num : random number generator seed [default = %d]\n", iSeed );
      Abc_Print( -2, "\t-W num : number of simulation words [default = %d]\n", nWords );
      Abc_Print( -2, "\t-T num : timeout in seconds (0 = no timeout) [default = %d]\n", nTimeout );
      Abc_Print( -2, "\t-C num : conflict limit (0 = no limit) [default = %d]\n", nConflictLimit );
      Abc_Print( -2, "\t-G num : fanin cost function (-1 = random) [default = %d]\n", nSortType );
      Abc_Print( -2, "\t-V num : scheduler verbosity level [default = %d]\n", nSchedulerVerbose );
      Abc_Print( -2, "\t-P num : partitioner verbosity level [default = %d]\n", nPartitionerVerbose );
      Abc_Print( -2, "\t-O num : optimizer verbosity level [default = %d]\n", nOptimizerVerbose );
      Abc_Print( -2, "\t-A num : analyzer verbosity level [default = %d]\n", nAnalyzerVerbose );
      Abc_Print( -2, "\t-Q num : simulator verbosity level [default = %d]\n", nSimulatorVerbose );
      Abc_Print( -2, "\t-S num : SAT solver verbosity level [default = %d]\n", nSatSolverVerbose );
      Abc_Print( -2, "\t-a     : use BDD-based analyzer (CSPF) [default = %s]\n", fUseBddCspf? "yes": "no" );
      Abc_Print( -2, "\t-b     : use BDD-based analyzer (MSPF) [default = %s]\n", fUseBddMspf? "yes": "no" );
      Abc_Print( -2, "\t-d     : ensure deterministic execution [default = %s]\n", fDeterministic? "yes": "no" );
      Abc_Print( -2, "\t-e     : apply \"c2rs; dc2\" after importing changes of partitions [default = %s]\n", fOptOnInsert? "yes": "no" );
      Abc_Print( -2, "\t-g     : discard changes that increased the cost [default = %s]\n", fGreedy? "yes": "no" );
      Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Rewire( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t *Gia_ManRewire(Gia_Man_t *pGia, Gia_Man_t *pExc, int nIters, float levelGrowRatio, int nExpands, int nGrowth, int nDivs, int nFaninMax, int nTimeOut, int nMode, int nMappedMode, int nDist, int fDch, int fTiming, int nSeed, int fCheck, int fChoices, int fVerbose);
    FILE *pFile = NULL;
    Gia_Man_t *pTemp, *pExc = NULL;
    int c, nIters = 100000, nExpands = 128, nGrowth = 4, nDivs = -1, nFaninMax = 8, nSeed = 1, nTimeOut = 0, nVerbose = 1, nMode = 0, nMappedMode = 0, nDist = 0, fCheck = 0, fChoices = 0, fDch = 1, fTiming = 0;
    float nLevelGrowRatio = 0;
    Extra_UtilGetoptReset();

    while ( ( c = Extra_UtilGetopt( argc, argv, "IEGDFSTMALRCVcsdth" ) ) != EOF ) {
        switch ( c ) {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nExpands = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nGrowth = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nDivs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nFaninMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nMode = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nMappedMode = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nDist = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a positive number.\n" );
                goto usage;
            }
            nLevelGrowRatio = atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'C':
            pFile = fopen( argv[globalUtilOptind], "rb" );
            if ( pFile == NULL )
            {
                Abc_Print( -1, "Cannot open input file \"%s\".\n", argv[globalUtilOptind] );
                return 1;
            }
            fclose( pFile );
            pExc = Gia_AigerRead( argv[globalUtilOptind], 0, 0, 0 );
            if ( pExc == NULL )
            {
                Abc_Print( -1, "Reading AIGER has failed.\n" );
                return 1;
            }
            globalUtilOptind++;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nVerbose = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'c':
            fCheck ^= 1;
            break;
        case 's':
            fChoices ^= 1;
            break;
        case 'd':
            fDch ^= 1;
            break;
        case 't':
            fTiming ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( argc > globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Wrong number of auguments.\n" );
        goto usage;
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( nMode == 1 && Abc_FrameReadLibGen2() == NULL )
    {
        Abc_Print( -1, "Library is not available.\n" );
        return 1;
    }

    pTemp = Gia_ManRewire( pAbc->pGia, pExc, nIters, nLevelGrowRatio, nExpands, nGrowth, nDivs, nFaninMax, nTimeOut, nMode, nMappedMode, nDist, fDch, fTiming, nSeed, fCheck, fChoices, nVerbose );
    if ( pExc )
        Gia_ManStop( pExc );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &rewire [-IEGDFLRMASTV <num>] [-csh]\n" );
    Abc_Print( -2, "\t             performs AIG re-wiring\n" );
    Abc_Print( -2, "\t-I <num>  :  the number of iterations [default = %d]\n",                                  nIters );
    Abc_Print( -2, "\t-E <num>  :  the number of fanins to add to all nodes [default = %d]\n",                  nExpands );
    Abc_Print( -2, "\t-G <num>  :  the number of fanins to add to one node [default = %d]\n",                   nGrowth );
    Abc_Print( -2, "\t-D <num>  :  the number of shared divisors to extract (-1: unlimited) [default = %d]\n",  nDivs );
    Abc_Print( -2, "\t-F <num>  :  the limit on the fanin count at a node [default = %d]\n",                    nFaninMax);
    Abc_Print( -2, "\t-L <num>  :  localization distances (0: unlimited) [default = %d]\n",                     nDist);
    Abc_Print( -2, "\t-R <num>  :  level constraint (0: unlimited, 1: preserve level) [default = %g]\n",        nLevelGrowRatio);
    Abc_Print( -2, "\t-M <num>  :  optimization target [default = %s]\n",                                       nMode ? "mapped" : "aig" );
    Abc_Print( -2, "\t-A <num>  :  mapper (0: amap, 1: &nf, 2: &simap) (experimental) [default = %d]\n",        nMappedMode );
    Abc_Print( -2, "\t-C <file> :  AIGER specifying external cares\n");
    Abc_Print( -2, "\t-S <num>  :  the random seed (0: random, >= 1: user defined) [default = %d]\n",           nSeed );
    Abc_Print( -2, "\t-T <num>  :  the timeout in seconds (0: unlimited) [default = %d]\n",                     nTimeOut );
    Abc_Print( -2, "\t-V <num>  :  the verbosity level [default = %d]\n",                                       nVerbose );
    Abc_Print( -2, "\t-c        :  check the equivalence [default = %s]\n",                                     fCheck ? "yes" : "no" );
    Abc_Print( -2, "\t-s        :  toggle accumulating structural choices [default = %s]\n",                    fChoices ? "yes" : "no" );
    Abc_Print( -2, "\t-d        :  toggle using \"dch\" before mapping [default = %s]\n",                       fDch ? "yes" : "no" );
    Abc_Print( -2, "\t-t        :  toggle timing-driven re-wiring [default = %s]\n",                            fTiming ? "yes" : "no" );
    Abc_Print( -2, "\t-h        :  prints the command usage\n" );
    Abc_Print( -2, "\n\tThis command was contributed by Jiun-Hao Chen from National Taiwan University.\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9DecGraph( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    char * pFileName = NULL;
    int c, fFile = 0;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "fh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'f':
            fFile ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( argc > globalUtilOptind + 1 )
    {
        return 0;
    }
    if ( !fFile && argc == globalUtilOptind + 1 ) 
    {
        return 0;
    }
    if ( !fFile && pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( fFile && argc == globalUtilOptind + 1 )
    {
        FILE * pFile = fopen( argv[globalUtilOptind], "rb" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9BCore(): Cannot open file \"%s\" for reading the simulation information.\n", argv[globalUtilOptind] );
            return 0;
        }
        fclose( pFile );
        pFileName = argv[globalUtilOptind];
    }
    if ( pFileName ) {
        pTemp = Gia_ManDecGraphFromFile( pFileName );
    } else {
        pTemp = Gia_ManDecGraph( pAbc->pGia );
    }
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &dg [-vhf] <file>\n" );
    Abc_Print( -2, "\t           convert AIG into decision graph structure\n" );
    Abc_Print( -2, "\t-f       : read from file (in IWLS format) [default = %s]\n" , fFile ? "yes" : "no");
    Abc_Print( -2, "\t-h       : prints the command usage\n\n");
    Abc_Print( -2, "\t           This command was contributed by Jiun-Hao Chen from National Taiwan University.\n" );
    Abc_Print( -2, "\t           For more info, please refer to the paper: Jiun-Hao Chen and Jie-Hong R. Jiang,\n");
    Abc_Print( -2, "\t           \"Circuit learning for multi-output Boolean functions\", Proc. IWLS 2025.\n");
    Abc_Print( -2, "\t           https://people.eecs.berkeley.edu/~alanmi/publications/other/iwls25_dg.pdf\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9LNetMap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Ntk_t * Gia_ManPerformLNetMap( Gia_Man_t * p, int GroupSize, int fUseFixed, int fTryNew, int fVerbose );
    Abc_Ntk_t * pTemp;
    char * pFileName = NULL;
    int c, fTryNew = 1, nIns = 6, nOuts = 2, fUseFixed = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IOfxvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nIns = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nOuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            break;
        case 'f':
            fUseFixed ^= 1;
            break;
        case 'x':
            fTryNew ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Empty GIA network.\n" );
        return 1;
    }
    if ( argc == globalUtilOptind + 1 )
    {
        FILE * pFile = fopen( argv[globalUtilOptind], "rb" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9BCore(): Cannot open file \"%s\" for reading the simulation information.\n", argv[globalUtilOptind] );
            return 0;
        }
        fclose( pFile );
        pFileName = argv[globalUtilOptind];
    }
    pTemp = Gia_ManPerformLNetMap( pAbc->pGia, nOuts, fUseFixed, fTryNew, fVerbose );
    Abc_FrameReplaceCurrentNetwork( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &lnetmap [-IO num] [-fxvh] <file>\n" );
    Abc_Print( -2, "\t           performs specialized LUT mapping\n" );
    Abc_Print( -2, "\t-I num   : the input support size [default = %d]\n",         nIns );
    Abc_Print( -2, "\t-O num   : the output group size [default = %d]\n",          nOuts );
    Abc_Print( -2, "\t-f       : toggles using fixed primitives [default = %s]\n", fUseFixed? "yes": "no" );
    Abc_Print( -2, "\t-x       : toggles using another computation [default = %s]\n",      fTryNew? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggles verbose output [default = %s]\n",         fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : prints the command usage\n");
    Abc_Print( -2, "\t<file>   : file name with simulation information\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Unmap( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManTestStruct( Gia_Man_t * p );
    int c, fConvert = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "cvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fConvert ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Struct(): There is no AIG to map.\n" );
        return 1;
    }
    if ( fConvert )
        Cmd_CommandExecute( pAbc, "&put; unmap; &get -m" );    
    else {
        Vec_IntFreeP( &pAbc->pGia->vMapping );
        Vec_IntFreeP( &pAbc->pGia->vPacking );
        Vec_IntFreeP( &pAbc->pGia->vCellMapping );
        Vec_IntFreeP( &pAbc->pGia->vEdge1 );
        Vec_IntFreeP( &pAbc->pGia->vEdge2 );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &unmap [-cvh]\n" );
    Abc_Print( -2, "\t           removes mapping from the current network\n" );
    Abc_Print( -2, "\t-c       : toggle converting cell mapping into LUT mapping [default = %s]\n", fConvert? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Struct( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManTestStruct( Gia_Man_t * p );
    int c, fVerbose;
    // set defaults
    fVerbose   = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Struct(): There is no AIG to map.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Struct(): Mapping of the AIG is not defined.\n" );
        return 1;
    }
    if ( Gia_ManLutSizeMax(pAbc->pGia) >= 8 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Struct(): Can only handle nodes with less than 8 inputs.\n" );
        return 1;
    }
    Gia_ManTestStruct( pAbc->pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &struct [-vh]\n" );
    Abc_Print( -2, "\t           checks decomposition structures of the current mapping\n" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Trace( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManDelayTraceDump( Gia_Man_t * p, char * pFileName );
    int c;
    int fUseLutLib;
    int fUseCellLib;
    int fVerbose;
    const char * pFileName = NULL;
    // set defaults
    fUseLutLib = 0;
    fUseCellLib = 0;
    fVerbose   = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "F:lcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            pFileName = globalUtilOptarg;
            break;
        case 'l':
            fUseLutLib ^= 1;
            break;
        case 'c':
            fUseCellLib ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Trace(): There is no AIG to map.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Trace(): Mapping of the AIG is not defined.\n" );
        return 1;
    }
    if ( fUseLutLib && fUseCellLib )
    {
        Abc_Print( -1, "Abc_CommandAbc9Trace(): Cannot use both LUT library (-l) and cell library (-c) simultaneously.\n" );
        return 1;
    }
    pAbc->pGia->pLutLib = fUseLutLib ? Abc_FrameReadLibLut() : NULL;
    pAbc->pGia->pCellLib = fUseCellLib ? Abc_FrameReadLibCell() : NULL;

    Gia_ManDelayTraceDump( pAbc->pGia, (char *)pFileName );
    return 0;

usage:
    Abc_Print( -2, "usage: &trace [-F file] [-lcvh]\n" );
    Abc_Print( -2, "\t           performs delay trace of LUT-mapped network\n" );
    Abc_Print( -2, "\t-F file  : dump the critical path to a file [default = stdout]\n" );
    Abc_Print( -2, "\t-l       : toggle using LUT-library-delay model [default = %s]\n", fUseLutLib? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggle using cell-library-delay model [default = %s]\n", fUseCellLib? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Speedup( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int fUseLutLib;
    int Percentage;
    int Degree;
    int fVerbose;
    int c, fVeryVerbose;

    // set defaults
    fUseLutLib   = 0;
    Percentage   = 5;
    Degree       = 2;
    fVerbose     = 0;
    fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PNlvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            Percentage = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Percentage < 1 || Percentage > 100 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            Degree = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Degree < 1 || Degree > 5 )
                goto usage;
            break;
        case 'l':
            fUseLutLib ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Speedup(): There is no AIG to map.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Speedup(): Mapping of the AIG is not defined.\n" );
        return 1;
    }
    pAbc->pGia->pLutLib = fUseLutLib ? pAbc->pLibLut : NULL;
    pTemp = Gia_ManSpeedup( pAbc->pGia, Percentage, Degree, fVerbose, fVeryVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &speedup [-P num] [-N num] [-lvwh]\n" );
    Abc_Print( -2, "\t           transforms LUT-mapped network into an AIG with choices;\n" );
    Abc_Print( -2, "\t           the choices are added to speedup the next round of mapping\n" );
    Abc_Print( -2, "\t-P <num> : delay delta defining critical path for library model [default = %d%%]\n", Percentage );
    Abc_Print( -2, "\t-N <num> : the max critical path degree for resynthesis (0 < num < 6) [default = %d]\n", Degree );
    Abc_Print( -2, "\t-l       : toggle using unit- or LUT-library-delay model [default = %s]\n", fUseLutLib? "lib" : "unit" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing detailed stats for each node [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Era( Abc_Frame_t * pAbc, int argc, char ** argv )
{
//    Gia_Man_t * pTemp = NULL;
    int c, fVerbose = 0;
    int fUseCubes = 1;
    int fDumpFile = 0;
    int fMiter = 0;
    int nStatesMax = 1000000000;
    extern int Gia_ManCollectReachable( Gia_Man_t * pAig, int nStatesMax, int fMiter, int fDumpFile, int fVerbose );
    extern int Gia_ManArePerform( Gia_Man_t * pAig, int nStatesMax, int fMiter, int fVerbose );

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Smcdvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nStatesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nStatesMax < 0 )
                goto usage;
            break;
        case 'm':
            fMiter ^= 1;
            break;
        case 'c':
            fUseCubes ^= 1;
            break;
        case 'd':
            fDumpFile ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Era(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Era(): The network is combinational.\n" );
        return 1;
    }
    if ( !fUseCubes && Gia_ManPiNum(pAbc->pGia) > 12 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Era(): The number of PIs (%d) should be no more than 12 when cubes are not used.\n", Gia_ManPiNum(pAbc->pGia) );
        return 1;
    }
    if ( fUseCubes && !fDumpFile )
        pAbc->Status = Gia_ManArePerform( pAbc->pGia, nStatesMax, fMiter, fVerbose );
    else
        pAbc->Status = Gia_ManCollectReachable( pAbc->pGia, nStatesMax, fMiter, fDumpFile, fVerbose );
    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    return 0;

usage:
    Abc_Print( -2, "usage: &era [-S num] [-mcdvh]\n" );
    Abc_Print( -2, "\t          explicit reachability analysis for small sequential AIGs\n" );
    Abc_Print( -2, "\t-S num  : the max number of states (num > 0) [default = %d]\n", nStatesMax );
    Abc_Print( -2, "\t-m      : stop when the miter output is 1 [default = %s]\n", fMiter? "yes": "no" );
    Abc_Print( -2, "\t-c      : use state cubes instead of state minterms [default = %s]\n", fUseCubes? "yes": "no" );
    Abc_Print( -2, "\t-d      : toggle dumping STG into a file [default = %s]\n", fDumpFile? "yes": "no" );
    Abc_Print( -2, "\t-v      : print verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Dch( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManEquivReduce2( Gia_Man_t * p, int fRandom );
    Gia_Man_t * pTemp;
    Dch_Pars_t Pars, * pPars = &Pars;
    int c, fMinLevel = 0, fEquiv = 0, fRandom = 0;
    // set defaults
    Dch_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WCSsptfremngcxyvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWords < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nSatVarMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nSatVarMax < 0 )
                goto usage;
            break;
        case 's':
            pPars->fSynthesis ^= 1;
            break;
        case 'p':
            pPars->fPower ^= 1;
            break;
        case 't':
            pPars->fSimulateTfo ^= 1;
            break;
        case 'f':
            pPars->fLightSynth ^= 1;
            break;
        case 'r':
            pPars->fSkipRedSupp ^= 1;
            break;
        case 'e':
            fEquiv ^= 1;
            break;
        case 'm':
            fMinLevel ^= 1;
            break;
        case 'n':
            fRandom ^= 1;
            break;
        case 'g':
            pPars->fUseGia ^= 1;
            break;
        case 'c':
            pPars->fUseCSat ^= 1;
            break;
        case 'x':
            pPars->fUseNew ^= 1;
            break;
        case 'y':
            pPars->fUseNew2 ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Dch(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManBufNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Dch(): This command does not work with barrier buffers.\n" );
        return 1;
    }
    if ( fEquiv )
    {
        Aig_Man_t * pNew = Gia_ManToAigSimple( pAbc->pGia );
        assert( Gia_ManObjNum(pAbc->pGia) == Aig_ManObjNum(pNew) );
        Dch_ComputeEquivalences( pNew, (Dch_Pars_t *)pPars );
        Gia_ManReprFromAigRepr( pNew, pAbc->pGia );
        Aig_ManStop( pNew );
        pTemp = Gia_ManEquivReduce( pAbc->pGia, 1, 0, 0, 0 );
    }
    else
    {
        pTemp = Gia_ManPerformDch( pAbc->pGia, pPars );
        Abc_FrameUpdateGia( pAbc, pTemp );
        if ( fMinLevel || fRandom ) 
            pTemp = Gia_ManEquivReduce2( pAbc->pGia, fRandom );
    }
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &dch [-WCS num] [-sptfremngcxyvh]\n" );
    Abc_Print( -2, "\t         computes structural choices using a new approach\n" );
    Abc_Print( -2, "\t-W num : the max number of simulation words [default = %d]\n", pPars->nWords );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-S num : the max number of SAT variables [default = %d]\n", pPars->nSatVarMax );
    Abc_Print( -2, "\t-s     : toggle synthesizing three snapshots [default = %s]\n", pPars->fSynthesis? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle power-aware rewriting [default = %s]\n", pPars->fPower? "yes": "no" );
    Abc_Print( -2, "\t-t     : toggle simulation of the TFO classes [default = %s]\n", pPars->fSimulateTfo? "yes": "no" );
    Abc_Print( -2, "\t-f     : toggle using lighter logic synthesis [default = %s]\n", pPars->fLightSynth? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle skipping choices with redundant support [default = %s]\n", pPars->fSkipRedSupp? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle computing and merging equivalences [default = %s]\n", fEquiv? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle minimizing logic level after merging equivalences [default = %s]\n", fMinLevel? "yes": "no" );
    Abc_Print( -2, "\t-n     : toggle selecting random choices while merging equivalences [default = %s]\n", fRandom? "yes": "no" );
    Abc_Print( -2, "\t-g     : toggle using GIA to prove equivalences [default = %s]\n", pPars->fUseGia? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle using circuit-based SAT vs. MiniSat [default = %s]\n", pPars->fUseCSat? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggle using new choice computation [default = %s]\n", pPars->fUseNew? "yes": "no" );
    Abc_Print( -2, "\t-y     : toggle using new choice computation [default = %s]\n", pPars->fUseNew2? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose printout [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Rpm( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupReplaceCut( Gia_Man_t * p );
    Gia_Man_t * pTemp;
    int c, nCutMax   = 16;
    int fUseNaive    =  0;
    int fUseOldAlgo  =  0;
    int fVerbose     =  0;
    int fVeryVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Cnavwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutMax < 0 )
                goto usage;
            break;
        case 'n':
            fUseNaive ^= 1;
            break;
        case 'a':
            fUseOldAlgo ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Rpm(): There is no AIG.\n" );
        return 0;
    }
    if ( fUseNaive )
        pTemp = Gia_ManDupReplaceCut( pAbc->pGia );
    else if ( fUseOldAlgo )
        pTemp = Abs_RpmPerformOld( pAbc->pGia, fVerbose );
    else
        pTemp = Abs_RpmPerform( pAbc->pGia, nCutMax, fVerbose, fVeryVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &rpm [-C num] [-navwh]\n" );
    Abc_Print( -2, "\t         performs structural reparametrization\n" );
    Abc_Print( -2, "\t-C num : max cut size for testing range equivalence [default = %d]\n", nCutMax );
    Abc_Print( -2, "\t-n     : toggle using naive reparametrization [default = %s]\n", fUseNaive? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle using old algorithm [default = %s]\n", fUseOldAlgo? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing more verbose information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9BackReach( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManCofTest( Gia_Man_t * pGia, int nFrameMax, int nConfMax, int nTimeMax, int fVerbose );

    Gia_Man_t * pTemp = NULL;
    int c, fVerbose = 0;
    int nFrameMax = 1000000;
    int nConfMax  = 1000000;
    int nTimeMax  =      10;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FCTvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrameMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrameMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeMax < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9BackReach(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManPoNum(pAbc->pGia) != 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9BackReach(): The number of POs is different from 1.\n" );
        return 1;
    }
    pTemp = Gia_ManCofTest( pAbc->pGia, nFrameMax, nConfMax, nTimeMax, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &back_reach [-FCT <num>] [-vh]\n" );
    Abc_Print( -2, "\t         performs backward reachability by circuit cofactoring\n" );
    Abc_Print( -2, "\t-F num : the limit on the depth of induction [default = %d]\n", nFrameMax );
    Abc_Print( -2, "\t-C num : the conflict limit at a node during induction [default = %d]\n", nConfMax );
    Abc_Print( -2, "\t-T num : the timeout for property directed reachability [default = %d]\n", nTimeMax );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Posplit( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Aig_Man_t * Aig_ManSplit( Aig_Man_t * p, int nVars, int fVerbose );
    Aig_Man_t * pMan, * pAux;
    Gia_Man_t * pTemp = NULL;
    int c, nVars = 5, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Posplit(): There is no AIG.\n" );
        return 1;
    }
    pMan = Gia_ManToAigSimple( pAbc->pGia );
    pMan = Aig_ManSplit( pAux = pMan, nVars, fVerbose );
    Aig_ManStop( pAux );
    if ( pMan != NULL )
    {
        pTemp = Gia_ManFromAigSimple( pMan );
        Aig_ManStop( pMan );
        Abc_FrameUpdateGia( pAbc, pTemp );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &posplit [-N num] [-vh]\n" );
    Abc_Print( -2, "\t         cofactors the property output w.r.t. a support subset\n" );
    Abc_Print( -2, "\t         (the OR of new PO functions is equal to the original property)\n" );
    Abc_Print( -2, "\t-N num : the number of random cofactoring variables [default = %d]\n", nVars );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Permute( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupRandPerm( Gia_Man_t * p, int fVerbose );
    Gia_Man_t * pTemp;
    int c, RandSeed = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Svh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            RandSeed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( RandSeed < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Permute(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Permute(): This command does not work for sequential AIGs.\n" );
        return 1;
    }
    Abc_Random(1);
    for ( c = 0; c < RandSeed; c++ )
        Abc_Random(0);
    pTemp = Gia_ManDupRandPerm( pAbc->pGia, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &permute [-S num] [-vh]\n" );
    Abc_Print( -2, "\t         generates a random NPNP transformation of the combinational AIG\n" );
    Abc_Print( -2, "\t-S num : the seed used to randomize the process [default = %d]\n", RandSeed );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

#ifdef ABC_USE_CUDD

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ReachM( Abc_Frame_t * pAbc, int argc, char ** argv )
{
//    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Gia_ParLlb_t Pars, * pPars = &Pars;
    char * pLogFileName = NULL;
    int c;
    extern int Llb_ManModelCheckGia( Gia_Man_t * pGia, Gia_ParLlb_t * pPars );

    // set defaults
    Llb_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "TBFCHSLripcsyzvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBddMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBddMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nIterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIterMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nClusterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nClusterMax < 0 )
                goto usage;
            break;
        case 'H':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-H\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nHintDepth = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nHintDepth < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->HintFirst = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->HintFirst < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'r':
            pPars->fReorder ^= 1;
            break;
        case 'i':
            pPars->fIndConstr ^= 1;
            break;
        case 'p':
            pPars->fUsePivots ^= 1;
            break;
        case 'c':
            pPars->fCluster ^= 1;
            break;
        case 's':
            pPars->fSchedule ^= 1;
            break;
        case 'y':
            pPars->fSkipOutCheck ^= 1;
            break;
        case 'z':
            pPars->fSkipReach ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachM(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachM(): The current AIG has no latches.\n" );
        return 0;
    }
    if ( Gia_ManObjNum(pAbc->pGia) >= (1<<16) )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachM(): Currently cannot handle AIGs with more than %d objects.\n", (1<<16) );
        return 0;
    }
    pAbc->Status  = Llb_ManModelCheckGia( pAbc->pGia, pPars );
    pAbc->nFrames = pPars->iFrame;
    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "&reachm" );
    return 0;

usage:
    Abc_Print( -2, "usage: &reachm [-TBFCHS num] [-L file] [-ripcsyzvwh]\n" );
    Abc_Print( -2, "\t         model checking via BDD-based reachability (dependence-matrix-based)\n" );
    Abc_Print( -2, "\t-T num : approximate time limit in seconds (0=infinite) [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-B num : max number of nodes in the intermediate BDDs [default = %d]\n", pPars->nBddMax );
    Abc_Print( -2, "\t-F num : max number of reachability iterations [default = %d]\n", pPars->nIterMax );
    Abc_Print( -2, "\t-C num : max number of variables in a cluster [default = %d]\n", pPars->nClusterMax );
    Abc_Print( -2, "\t-H num : max number of hints to use [default = %d]\n", pPars->nHintDepth );
    Abc_Print( -2, "\t-S num : the number of the starting hint [default = %d]\n", pPars->HintFirst );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n", pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-r     : enable dynamic BDD variable reordering [default = %s]\n", pPars->fReorder? "yes": "no" );
    Abc_Print( -2, "\t-i     : enable extraction of inductive constraints [default = %s]\n", pPars->fIndConstr? "yes": "no" );
    Abc_Print( -2, "\t-p     : enable partitions for internal cut-points [default = %s]\n", pPars->fUsePivots? "yes": "no" );
    Abc_Print( -2, "\t-c     : enable clustering of partitions [default = %s]\n", pPars->fCluster? "yes": "no" );
    Abc_Print( -2, "\t-s     : enable scheduling of clusters [default = %s]\n", pPars->fSchedule? "yes": "no" );
    Abc_Print( -2, "\t-y     : skip checking property outputs [default = %s]\n", pPars->fSkipOutCheck? "yes": "no" );
    Abc_Print( -2, "\t-z     : skip reachability (run preparation phase only) [default = %s]\n", pPars->fSkipReach? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : prints dependency matrix [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ReachP( Abc_Frame_t * pAbc, int argc, char ** argv )
{
//    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Gia_ParLlb_t Pars, * pPars = &Pars;
    Aig_Man_t * pMan;
    char * pLogFileName = NULL;
    int c;
    extern int Llb_ManReachMinCut( Aig_Man_t * pAig, Gia_ParLlb_t * pPars );

    // set defaults
    Llb_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NBFTLrbyzdvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nPartValue = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nPartValue < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBddMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBddMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nIterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIterMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'r':
            pPars->fReorder ^= 1;
            break;
        case 'b':
            pPars->fBackward ^= 1;
            break;
        case 'y':
            pPars->fSkipOutCheck ^= 1;
            break;
        case 'z':
            pPars->fSkipReach ^= 1;
            break;
        case 'd':
            pPars->fDumpReached ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachP(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachP(): The current AIG has no latches.\n" );
        return 0;
    }
    if ( Gia_ManObjNum(pAbc->pGia) >= (1<<16) )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachP(): Currently cannot handle AIGs with more than %d objects.\n", (1<<16) );
        return 0;
    }
    pMan          = Gia_ManToAigSimple( pAbc->pGia );
    pAbc->Status  = Llb_ManReachMinCut( pMan, pPars );
    pAbc->nFrames = pPars->iFrame;
    Abc_FrameReplaceCex( pAbc, &pMan->pSeqModel );
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "&reachp" );
    Aig_ManStop( pMan );
    return 0;

usage:
    Abc_Print( -2, "usage: &reachp [-NFT num] [-L file] [-rbyzdvwh]\n" );
    Abc_Print( -2, "\t         model checking via BDD-based reachability (partitioning-based)\n" );
    Abc_Print( -2, "\t-N num : partitioning value (MinVol=nANDs/N/2; MaxVol=nANDs/N) [default = %d]\n", pPars->nPartValue );
//    Abc_Print( -2, "\t-B num : the BDD node increase when hints kick in [default = %d]\n", pPars->nBddMax );
    Abc_Print( -2, "\t-F num : max number of reachability iterations [default = %d]\n", pPars->nIterMax );
    Abc_Print( -2, "\t-T num : approximate time limit in seconds (0=infinite) [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n", pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-r     : enable additional BDD var reordering before image [default = %s]\n", pPars->fReorder? "yes": "no" );
    Abc_Print( -2, "\t-b     : perform backward reachability analysis [default = %s]\n", pPars->fBackward? "yes": "no" );
    Abc_Print( -2, "\t-y     : skip checking property outputs [default = %s]\n", pPars->fSkipOutCheck? "yes": "no" );
    Abc_Print( -2, "\t-z     : skip reachability (run preparation phase only) [default = %s]\n", pPars->fSkipReach? "yes": "no" );
    Abc_Print( -2, "\t-d     : dump BDD of reached states into file \"reached.blif\" [default = %s]\n", pPars->fDumpReached? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : prints additional information [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ReachN( Abc_Frame_t * pAbc, int argc, char ** argv )
{
//    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Gia_ParLlb_t Pars, * pPars = &Pars;
    Aig_Man_t * pMan;
    char * pLogFileName = NULL;
    int c;
    extern int Llb_NonlinCoreReach( Aig_Man_t * pAig, Gia_ParLlb_t * pPars );

    // set defaults
    Llb_ManSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "BFTLryzvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBddMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBddMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nIterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIterMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'r':
            pPars->fReorder ^= 1;
            break;
        case 'y':
            pPars->fSkipOutCheck ^= 1;
            break;
        case 'z':
            pPars->fSkipReach ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachN(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachN(): The current AIG has no latches.\n" );
        return 0;
    }
    if ( Gia_ManObjNum(pAbc->pGia) >= (1<<16) )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachN(): Currently cannot handle AIGs with more than %d objects.\n", (1<<16) );
        return 0;
    }
    pMan          = Gia_ManToAigSimple( pAbc->pGia );
    pAbc->Status  = Llb_NonlinCoreReach( pMan, pPars );
    pAbc->nFrames = pPars->iFrame;
    Abc_FrameReplaceCex( pAbc, &pMan->pSeqModel );
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "&reachn" );
    Aig_ManStop( pMan );
    return 0;

usage:
    Abc_Print( -2, "usage: &reachn [-BFT num] [-L file] [-ryzvh]\n" );
    Abc_Print( -2, "\t         model checking via BDD-based reachability (non-linear-QS-based)\n" );
    Abc_Print( -2, "\t-B num : the BDD node increase when hints kick in [default = %d]\n", pPars->nBddMax );
    Abc_Print( -2, "\t-F num : max number of reachability iterations [default = %d]\n", pPars->nIterMax );
    Abc_Print( -2, "\t-T num : approximate time limit in seconds (0=infinite) [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n", pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-r     : enable additional BDD var reordering before image [default = %s]\n", pPars->fReorder? "yes": "no" );
    Abc_Print( -2, "\t-y     : skip checking property outputs [default = %s]\n", pPars->fSkipOutCheck? "yes": "no" );
    Abc_Print( -2, "\t-z     : skip reachability (run preparation phase only) [default = %s]\n", pPars->fSkipReach? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
//    Abc_Print( -2, "\t-w     : prints additional information [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ReachY( Abc_Frame_t * pAbc, int argc, char ** argv )
{
//    Abc_Ntk_t * pNtk = Abc_FrameReadNtk(pAbc);
    Gia_ParLlb_t Pars, * pPars = &Pars;
    Aig_Man_t * pMan;
    char * pLogFileName = NULL;
    int c;

    // set defaults
    Llb_ManSetDefaultParams( pPars );
    pPars->fCluster = 0;
    pPars->fReorder = 0;
    pPars->nBddMax     = 100;
    pPars->nClusterMax = 500;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "BCFTLbcryzvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBddMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBddMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nClusterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nClusterMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nIterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIterMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'b':
            pPars->fBackward ^= 1;
            break;
        case 'c':
            pPars->fCluster ^= 1;
            break;
        case 'r':
            pPars->fReorder ^= 1;
            break;
        case 'y':
            pPars->fSkipOutCheck ^= 1;
            break;
        case 'z':
            pPars->fSkipReach ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachN(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachN(): The current AIG has no latches.\n" );
        return 0;
    }
/*
    if ( Gia_ManObjNum(pAbc->pGia) >= (1<<16) )
    {
        Abc_Print( -1, "Abc_CommandAbc9ReachN(): Currently cannot handle AIGs with more than %d objects.\n", (1<<16) );
        return 0;
    }
*/
    pMan          = Gia_ManToAigSimple( pAbc->pGia );
    pAbc->Status  = Llb_Nonlin4CoreReach( pMan, pPars );
    pAbc->nFrames = pPars->iFrame;
    Abc_FrameReplaceCex( pAbc, &pMan->pSeqModel );
    if ( pLogFileName )
        Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "&reachy" );
    Aig_ManStop( pMan );
    return 0;

usage:
    Abc_Print( -2, "usage: &reachy [-BCFT num] [-L file] [-bcryzvh]\n" );
    Abc_Print( -2, "\t         model checking via BDD-based reachability (non-linear-QS-based)\n" );
    Abc_Print( -2, "\t-B num : the max BDD size to introduce cut points [default = %d]\n", pPars->nBddMax );
    Abc_Print( -2, "\t-C num : the max BDD size to reparameterize/cluster [default = %d]\n", pPars->nClusterMax );
    Abc_Print( -2, "\t-F num : max number of reachability iterations [default = %d]\n", pPars->nIterMax );
    Abc_Print( -2, "\t-T num : approximate time limit in seconds (0=infinite) [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-L file: the log file name [default = %s]\n", pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-b     : enable using backward enumeration [default = %s]\n", pPars->fBackward? "yes": "no" );
    Abc_Print( -2, "\t-c     : enable reparametrization clustering [default = %s]\n", pPars->fCluster? "yes": "no" );
    Abc_Print( -2, "\t-r     : enable additional BDD var reordering before image [default = %s]\n", pPars->fReorder? "yes": "no" );
    Abc_Print( -2, "\t-y     : skip checking property outputs [default = %s]\n", pPars->fSkipOutCheck? "yes": "no" );
    Abc_Print( -2, "\t-z     : skip reachability (run preparation phase only) [default = %s]\n", pPars->fSkipReach? "yes": "no" );
    Abc_Print( -2, "\t-v     : prints verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
//    Abc_Print( -2, "\t-w     : prints additional information [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

#endif

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Undo( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "h" ) ) != EOF )
    {
        switch ( c )
        {
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Undo(): There is no design.\n" );
        return 1;
    }
    if ( pAbc->pGia2 == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Undo(): There is no previously saved network.\n" );
        return 1;
    }
    Gia_ManStop( pAbc->pGia );
    pAbc->pGia = pAbc->pGia2;
    pAbc->pGia2 = NULL;
    return 0;

usage:
    Abc_Print( -2, "usage: &undo [-h]\n" );
    Abc_Print( -2, "\t        reverses the previous AIG transformation\n" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Mesh( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Bmc_MeshTest( Gia_Man_t * p, int X, int Y, int T, int fVerbose );
    extern void Bmc_MeshTest2( Gia_Man_t * p, int X, int Y, int T, int fVerbose );
    int X =  4;
    int Y =  4;
    int T =  3;
    int fUseSatoko = 1;
    int c, fVerbose = 1;
    // set defaults
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "XYTsh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'X':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-X\" should be followed by an integer.\n" );
                goto usage;
            }
            X = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( X < 3 )
                goto usage;
            break;
        case 'Y':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Y\" should be followed by an integer.\n" );
                goto usage;
            }
            Y = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Y < 3 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            T = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( T < 2 )
                goto usage;
            break;
        case 's':
            fUseSatoko ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Mesh(): There is no design.\n" );
        return 1;
    }
    if ( Gia_ManCoNum(pAbc->pGia) != 1 )
    {
        Abc_Print( -1, "Currently this command expects AIG with one output.\n" );
        return 1;
    }
    if ( Gia_ManCiNum(pAbc->pGia) > 20 )
    {
        Abc_Print( -1, "Currently this command expects AIG with no more than 20 nodes.\n" );
        return 1;
    }
    if ( Gia_ManLevelNum(pAbc->pGia) > T )
    {
        Abc_Print( -1, "The depth of the AIG (%d) cannot be larger than the latency (%d).\n", Gia_ManLevelNum(pAbc->pGia), T );
        return 1;
    }
    if ( fUseSatoko )
        Bmc_MeshTest( pAbc->pGia, X, Y, T, fVerbose );
    else
        Bmc_MeshTest2( pAbc->pGia, X, Y, T, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &mesh [-XYT num] [-sh]\n" );
    Abc_Print( -2, "\t         creates a mesh architecture for the given AIG\n" );
    Abc_Print( -2, "\t-X num : horizontal size of the mesh (X >= 3) [default = %d]\n", X );
    Abc_Print( -2, "\t-Y num : vertical size of the mesh (Y >= 3) [default = %d]\n", Y );
    Abc_Print( -2, "\t-T num : the latency of the mesh (T >= 2) [default = %d]\n", T );
    Abc_Print( -2, "\t-s     : toggle using new SAT solver Satoko [default = %s]\n", fUseSatoko? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Iso( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pAig;
    Vec_Ptr_t * vPosEquivs;
//    Vec_Ptr_t * vPiPerms;
    int c, fNewAlgo = 1, fEstimate = 0, fBetterQual = 0, fDualOut = 0, fVerbose = 0, fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "neqdvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'n':
            fNewAlgo ^= 1;
            break;
        case 'e':
            fEstimate ^= 1;
            break;
        case 'q':
            fBetterQual ^= 1;
            break;
        case 'd':
            fDualOut ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iso(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManPoNum(pAbc->pGia) == 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iso(): The AIG has only one PO. Isomorphism detection is not performed.\n" );
        return 1;
    }
    if ( fNewAlgo )
        pAig = Gia_ManIsoReduce2( pAbc->pGia, &vPosEquivs, NULL, fEstimate, fBetterQual, fDualOut, fVerbose, fVeryVerbose );
    else
        pAig = Gia_ManIsoReduce( pAbc->pGia, &vPosEquivs, NULL, fEstimate, fDualOut, fVerbose, fVeryVerbose );
//    pAig = Gia_ManIsoReduce( pAbc->pGia, &vPosEquivs, &vPiPerms, 0, fDualOut, fVerbose, fVeryVerbose );
//    Vec_VecFree( (Vec_Vec_t *)vPiPerms );
    if ( pAig == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Iso(): Transformation has failed.\n" );
        return 1;
    }
    // update the internal storage of PO equivalences
    Abc_FrameReplacePoEquivs( pAbc, &vPosEquivs );
    // update the AIG
    Abc_FrameUpdateGia( pAbc, pAig );
    return 0;

usage:
    Abc_Print( -2, "usage: &iso [-neqdvwh]\n" );
    Abc_Print( -2, "\t         removes POs with isomorphic sequential COI\n" );
    Abc_Print( -2, "\t-n     : toggle using new fast algorithm [default = %s]\n", fNewAlgo? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle computing lower bound on equivalence classes [default = %s]\n", fEstimate? "yes": "no" );
    Abc_Print( -2, "\t-q     : toggle improving quality at the expense of runtime [default = %s]\n", fBetterQual? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle treating the current AIG as a dual-output miter [default = %s]\n", fDualOut? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing very verbose information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9IsoNpn( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManIsoNpnReduce( Gia_Man_t * p, Vec_Ptr_t ** pvPosEquivs, int fVerbose );
    Gia_Man_t * pAig;
    Vec_Ptr_t * vPosEquivs;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9IsoNpn(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManPoNum(pAbc->pGia) == 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9IsoNpn(): The AIG has only one PO. Isomorphism detection is not performed.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9IsoNpn(): ISO-NPN does not work with sequential AIGs.\n" );
        return 1;
    }
    pAig = Gia_ManIsoNpnReduce( pAbc->pGia, &vPosEquivs, fVerbose );
    if ( pAig == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9IsoNpn(): Transformation has failed.\n" );
        return 1;
    }
    // update the internal storage of PO equivalences
    Abc_FrameReplacePoEquivs( pAbc, &vPosEquivs );
    // update the AIG
    Abc_FrameUpdateGia( pAbc, pAig );
    return 0;

usage:
    Abc_Print( -2, "usage: &isonpn [-vh]\n" );
    Abc_Print( -2, "\t         removes POs with functionally isomorphic combinational COI\n" );
    Abc_Print( -2, "\t         (currently ignores POs whose structural support is more than 16)\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9IsoSt( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManIsoStrashReduce( Gia_Man_t * p, Vec_Ptr_t ** pvPosEquivs, int fVerbose );
    Gia_Man_t * pAig;
    Vec_Ptr_t * vPosEquivs;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9IsoSt(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManPoNum(pAbc->pGia) == 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9IsoSt(): The AIG has only one PO. Isomorphism detection is not performed.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9IsoSt(): ISO-ST does not work with sequential AIGs.\n" );
        return 1;
    }
    pAig = Gia_ManIsoStrashReduce( pAbc->pGia, &vPosEquivs, fVerbose );
    if ( pAig == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9IsoSt(): Transformation has failed.\n" );
        return 1;
    }
    // update the internal storage of PO equivalences
    Abc_FrameReplacePoEquivs( pAbc, &vPosEquivs );
    // update the AIG
    Abc_FrameUpdateGia( pAbc, pAig );
    return 0;

usage:
    Abc_Print( -2, "usage: &isost [-vh]\n" );
    Abc_Print( -2, "\t         removes POs with functionally isomorphic combinational COI\n" );
    Abc_Print( -2, "\t         (this command relies exclusively on structural hashing)\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Store( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fClean = 0, fPrint = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "cpvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fClean ^= 1;
            break;
        case 'p':
            fPrint ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Store(): There is no AIG.\n" );
        return 1;
    }
    if ( fClean )
        Abc_FrameStoreStop( pAbc );
    else if ( fPrint )
        Abc_FrameStorePrint( pAbc );
    else
        Abc_FrameStoreAdd( pAbc, pAbc->pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &store [-cpvh]\n" );
    Abc_Print( -2, "\t         maintains the store of unique AIG structures\n" );
    Abc_Print( -2, "\t-c     : toggle cleaning the store [default = %s]\n", fClean? "yes": "no" );
    Abc_Print( -2, "\t-p     : toggle printing the store statistics [default = %s]\n", fPrint? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Compare( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_Iso4TestTwo( Gia_Man_t * pGia0, Gia_Man_t * pGia1 );
    extern void Gia_ManComparePrint( Gia_Man_t * p, Gia_Man_t * q );
    Gia_Man_t * pGia0, * pGia1;
    char ** pArgvNew; int nArgcNew;
    int c, fFunc = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "fvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'f':
            fFunc ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;        
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 2 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Compare(): This command expects two AIG file names on the command line.\n" );
        return 1;
    }
    pGia0 = Gia_AigerRead( pArgvNew[0], 0, 0, 0 );
    pGia1 = Gia_AigerRead( pArgvNew[1], 0, 0, 0 );
    if ( pGia0 == NULL || pGia1 == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Compare(): Reading input files did not work.\n" );
        return 1;
    }
    if ( fFunc )
        Gia_ManComparePrint( pGia0, pGia1 );
    else
        Gia_Iso4TestTwo( pGia0, pGia1 );
    Gia_ManStop( pGia0 );
    Gia_ManStop( pGia1 );
    return 0;

usage:
    Abc_Print( -2, "usage: &compare <file1> <file2> [-fvh]\n" );
    Abc_Print( -2, "\t         compared two AIGs for structural similarity\n" );
    Abc_Print( -2, "\t-f     : toggle functional comparison [default = %s]\n", fFunc? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9RevEng( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManCompareSims( Gia_Man_t * pHie, Gia_Man_t * pFlat, int nWords, int fVerbose );
    Gia_Man_t * pGia0, * pGia1;
    char ** pArgvNew; int nArgcNew;
    int c, nWords = 4, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Wvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9RevEng(): There is no AIG.\n" );
        return 1;
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew != 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9RevEng(): This command expects one AIG file name on the command line.\n" );
        return 1;
    }
    pGia0 = pAbc->pGia;
    pGia1 = Gia_AigerRead( pArgvNew[0], 0, 0, 0 );
    if ( pGia0 == NULL || pGia1 == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9RevEng(): Reading input files did not work.\n" );
        return 1;
    }
    Gia_ManCompareSims( pGia0, pGia1, nWords, fVerbose );
    Gia_ManStop( pGia1 );
    return 0;

usage:
    Abc_Print( -2, "usage: &reveng [-W num] [-vh] <file>\n" );
    Abc_Print( -2, "\t         compares two AIGs for structural similarity\n" );
    Abc_Print( -2, "\t         the current AIG is expected to contain some hierarchy\n" );
    Abc_Print( -2, "\t         the given AIG from <file> is expected to be flat\n" );
    Abc_Print( -2, "\t-W num : the number of 64-bit words of simulation info [default = %d]\n", nWords );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Uif( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupUif( Gia_Man_t * p );
    extern Gia_Man_t * Gia_ManDupBlackBox( Gia_Man_t * p );
    Gia_Man_t * pNew = NULL, * pTemp = NULL;
    int c, fBlackBox = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "bvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'b':
            fBlackBox ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Uif(): There is no AIG.\n" );
        return 1;
    }
    if ( pAbc->pGia->vBarBufs == NULL || Vec_IntSize(pAbc->pGia->vBarBufs) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Uif(): Hierarchy is not defined.\n" );
        return 1;
    }
    pNew = Gia_ManDupUif( pAbc->pGia );
    if ( fBlackBox )
    {
        pNew = Gia_ManDupBlackBox( pTemp = pNew );
        Gia_ManStop( pTemp );
    }
    Abc_FrameUpdateGia( pAbc, pNew );
    return 0;

usage:
    Abc_Print( -2, "usage: &uif [-bvh]\n" );
    Abc_Print( -2, "\t         eagerly adds UIF constraints when hierarchy is present\n" );
    Abc_Print( -2, "\t-b     : toggle blackboxing while adding constraints [default = %s]\n", fBlackBox? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9CexInfo( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Bmc_CexTest( Gia_Man_t * p, Abc_Cex_t * pCex, int fVerbose );
    int c, fDualOut = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "dvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'd':
            fDualOut ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9CexInfo(): There is no AIG.\n" );
        return 1;
    }
    if ( pAbc->pCex == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9CexInfo(): There is no CEX.\n" );
        return 1;
    }
    Bmc_CexTest( pAbc->pGia, pAbc->pCex, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &cexinfo [-vh]\n" );
    Abc_Print( -2, "\t         prints information about the current counter-example\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Cycle( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, nFrames = 10, fUseCex = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'c':
            fUseCex ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Cycle(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManDupCycled( pAbc->pGia, fUseCex ? pAbc->pCex : NULL, nFrames );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &cycle [-F num] [-cvh]\n" );
    Abc_Print( -2, "\t         cycles sequential circuit for the given number of timeframes\n" );
    Abc_Print( -2, "\t         to derive a new initial state (which may be on the envelope)\n" );
    Abc_Print( -2, "\t-F num : the number of frames to simulate [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-c     : toggle using PI values from the current CEX [default = %s]\n", fUseCex? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Cone( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    Vec_Int_t * vPos;
    int c, nRegs = 0, iOutNum = -1, nOutRange = 1, iPartNum = -1, iConeNum = -1, nLevelMax = 0, nTimeWindow = 0, fUseAllCis = 0, fExtractAll = 0, fComb = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ORPLWCaecvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            iOutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iOutNum < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nOutRange = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nOutRange < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            iPartNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iPartNum < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevelMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevelMax < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeWindow = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeWindow < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            iConeNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iConeNum < 1 )
                goto usage;
            break;
        case 'a':
            fUseAllCis ^= 1;
            break;
        case 'e':
            fExtractAll ^= 1;
            break;
        case 'c':
            fComb ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Cone(): There is no AIG.\n" );
        return 1;
    }
    if ( fExtractAll )
    {
        char Buffer[1000];
        Gia_Obj_t * pObj; int i;
        unsigned char nDigits = (unsigned char)Abc_Base10Log(Gia_ManPoNum(pAbc->pGia));
        Gia_ManForEachPo( pAbc->pGia, pObj, i )
        {
            Gia_Man_t * pOne = Gia_ManDupDfsCone( pAbc->pGia, pObj );
            sprintf( Buffer, "%s_%0*d.aig", Extra_FileNameGeneric(pAbc->pGia->pSpec), nDigits, i );
            Gia_AigerWrite( pOne, Buffer, 0, 0, 0 );
            Gia_ManStop( pOne );
        }
        printf( "Dumped all outputs into individual AIGER files.\n" );
        return 0;
    }
    if ( nLevelMax || nTimeWindow )
    {
        if ( nLevelMax && nTimeWindow )
        {
            Abc_Print( -1, "Abc_CommandAbc9Cone(): Parameters -L (max level) and -W (timing window) cannot be specified at the same time.\n" );
            return 1;
        }
        else
        {
            pTemp = Gia_ManExtractWindow( pAbc->pGia, nLevelMax, nTimeWindow, fVerbose );
            Abc_FrameUpdateGia( pAbc, pTemp );
            return 0;
        }
    }
    if ( iConeNum > 0 )
    {
        if ( iConeNum >= Gia_ManObjNum(pAbc->pGia) || !Gia_ObjIsAnd(Gia_ManObj(pAbc->pGia, iConeNum)) ) 
        {
            Abc_Print( -1, "Abc_CommandAbc9Cone(): Object with Id %d is not a node.\n", iConeNum );
            return 1;
        }
        pTemp = Gia_ManDupDfsNode( pAbc->pGia, Gia_ManObj(pAbc->pGia, iConeNum) );
        Abc_FrameUpdateGia( pAbc, pTemp );    
        return 0;    
    }
    if ( iPartNum >= 0 )
    {
        Vec_Int_t * vClass;
        Vec_Vec_t * vClasses = (Vec_Vec_t *)pAbc->vPoEquivs;
        if ( vClasses == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9Cone(): Partitions are not defined.\n" );
            return 1;
        }
        if ( iPartNum >= Vec_VecSize(vClasses) )
        {
            Abc_Print( -1, "Abc_CommandAbc9Cone(): Partition index exceed the array size.\n" );
            return 1;
        }
        vClass = Vec_VecEntryInt( vClasses, iPartNum );
        pTemp = Gia_ManDupCones( pAbc->pGia, Vec_IntArray(vClass), Vec_IntSize(vClass), !fUseAllCis );
        if ( pTemp )
            Abc_FrameUpdateGia( pAbc, pTemp );
        return 0;
    }
    nRegs = Gia_ManRegNum( pAbc->pGia );
    if ( fComb )
        pAbc->pGia->nRegs = 0;
    if ( iOutNum < 0 || iOutNum + nOutRange > Gia_ManPoNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Cone(): Range of outputs to extract is incorrect.\n" );
        if ( fComb )
            Gia_ManSetRegNum( pAbc->pGia, nRegs );
        return 1;
    }
    vPos = Vec_IntStartRange( iOutNum, nOutRange );
    pTemp = Gia_ManDupCones( pAbc->pGia, Vec_IntArray(vPos), nOutRange, !fUseAllCis );
    if ( fComb )
        Gia_ManSetRegNum( pAbc->pGia, nRegs );
    Vec_IntFree( vPos );
    if ( pTemp )
        Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &cone [-ORPLWC num] [-aecvh]\n" );
    Abc_Print( -2, "\t         extracting multi-output sequential logic cones\n" );
    Abc_Print( -2, "\t-O num : the index of first PO to extract [default = %d]\n", iOutNum );
    Abc_Print( -2, "\t-R num : (optional) the number of outputs to extract [default = %d]\n", nOutRange );
    Abc_Print( -2, "\t-P num : (optional) the partition number to extract [default = %d]\n", iPartNum );
    Abc_Print( -2, "\t-L num : (optional) extract cones with higher level [default = %d]\n", nLevelMax );
    Abc_Print( -2, "\t-W num : (optional) extract cones falling into this window [default = %d]\n", nTimeWindow );
    Abc_Print( -2, "\t-C num : (optional) extract cone of one node with ID equal to <num> [default = unused]\n" );
    Abc_Print( -2, "\t-a     : toggle keeping all CIs or structral support only [default = %s]\n", fUseAllCis? "all": "structural" );
    Abc_Print( -2, "\t-e     : toggle writing all outputs into individual files [default = %s]\n", fExtractAll? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle performing cone extraction combinationally [default = %s]\n", fComb? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Slice( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, nSuppSize = 6, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Svh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nSuppSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSuppSize < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Slice(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManDupSliced( pAbc->pGia, nSuppSize );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &slice [-S num] [-vh]\n" );
    Abc_Print( -2, "\t         cuts the lower part of the AIG with nodes using their support\n" );
    Abc_Print( -2, "\t-S num : the largest support size to keep in the slide [default = %d]\n", nSuppSize );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9PoPart( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManFindPoPartition( Gia_Man_t * p, int SelectShift, int fOnlyCis, int fSetLargest, int fVerbose, Vec_Ptr_t ** pvPosEquivs );
    Gia_Man_t * pTemp;
    Vec_Ptr_t * vPosEquivs = NULL;
    int c, SelectShift = 0, fOnlyCis = 0, fSetLargest = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Simvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            SelectShift = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( SelectShift < 0 )
                goto usage;
            break;
        case 'i':
            fOnlyCis ^= 1;
            break;
        case 'm':
            fSetLargest ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9PoPart(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManFindPoPartition( pAbc->pGia, SelectShift, fOnlyCis, fSetLargest, fVerbose, &vPosEquivs );
    if ( pTemp )
        Abc_FrameUpdateGia( pAbc, pTemp );
    Abc_FrameReplacePoEquivs( pAbc, &vPosEquivs );
    return 0;

usage:
    Abc_Print( -2, "usage: &popart [-S num] [-imvh]\n" );
    Abc_Print( -2, "\t         partitioning of POs into equivalence classes\n" );
    Abc_Print( -2, "\t-S num : random seed to select the set of pivot nodes [default = %d]\n", SelectShift );
    Abc_Print( -2, "\t       : (if the seed is 0, the nodes with max fanout counts are used)\n" );
    Abc_Print( -2, "\t-i     : toggle allowing only CIs to be the pivots [default = %s]\n", fOnlyCis? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggle using the largest part as the current network [default = %s]\n", fSetLargest? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9PoPart2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManFindPoPartition2( Gia_Man_t * p, int iStartNum, int nDelta, int nOutsMin, int nOutsMax, int fSetLargest, int fVerbose, Vec_Ptr_t ** pvPosEquivs );
    Gia_Man_t * pTemp = NULL;
    Vec_Ptr_t * vPosEquivs = NULL;
    int c, iStartNum = 0, nDelta = 10, nOutsMin = 100, nOutsMax = 1000, fSetLargest = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "SDLUmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            iStartNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iStartNum < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nDelta = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDelta < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nOutsMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nOutsMin < 0 )
                goto usage;
            break;
        case 'U':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-U\" should be followed by an integer.\n" );
                goto usage;
            }
            nOutsMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nOutsMax < 0 )
                goto usage;
            break;
        case 'm':
            fSetLargest ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9PoPart(): There is no AIG.\n" );
        return 1;
    }
    pTemp = Gia_ManFindPoPartition2( pAbc->pGia, iStartNum, nDelta, nOutsMin, nOutsMax, fSetLargest, fVerbose, &vPosEquivs );
    if ( pTemp )
        Abc_FrameUpdateGia( pAbc, pTemp );
    Abc_FrameReplacePoEquivs( pAbc, &vPosEquivs );
    return 0;

usage:
    Abc_Print( -2, "usage: &popart2 [-SDLU num] [-mvh]\n" );
    Abc_Print( -2, "\t         extracting multi-output sequential logic cones\n" );
    Abc_Print( -2, "\t-S num : the index of the PO to start the cluster [default = %d]\n", iStartNum );
    Abc_Print( -2, "\t-D num : the max increase in flop count after adding one PO [default = %d]\n", nDelta );
    Abc_Print( -2, "\t-L num : the minimum number of POs in a cluster [default = %d]\n", nOutsMin );
    Abc_Print( -2, "\t-U num : the maximum number of POs in a cluster [default = %d]\n", nOutsMax );
    Abc_Print( -2, "\t-m     : toggle selecting the largest cluster [default = %s]\n", fSetLargest? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GroupProve( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Vec_Int_t * Gia_ManGroupProve( Gia_Man_t * p, char * pCommLine, int nGroupSize, int fVerbose );
    Vec_Int_t * vStatus;
    char * pCommLine = NULL;
    int c, nGroupSize = 1, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "GSvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            nGroupSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nGroupSize <= 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a file name.\n" );
                goto usage;
            }
            pCommLine = argv[globalUtilOptind];
            globalUtilOptind++;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GroupProve(): There is no AIG.\n" );
        return 1;
    }
    if ( pCommLine == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GroupProve(): Command line is not given.\n" );
        return 1;
    }
    vStatus = Gia_ManGroupProve( pAbc->pGia, pCommLine, nGroupSize, fVerbose );
    Vec_IntFree( vStatus );
    return 0;

usage:
    Abc_Print( -2, "usage: &gprove [-GS num] [-vh]\n" );
    Abc_Print( -2, "\t         proves multi-output testcase by splitting outputs into groups\n" );
    Abc_Print( -2, "\t         (currently, group size more than one works only for \"bmc3\" and \"pdr\")\n" );
    Abc_Print( -2, "\t-G num : the size of one group [default = %d]\n", nGroupSize );
    Abc_Print( -2, "\t-S str : the command line to be executed for each group [default = %s]\n", pCommLine ? pCommLine : "none" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9MultiProve( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Gia_ManMultiProve( Gia_Man_t * p, Bmc_MulPar_t * pPars );
    Vec_Int_t * vStatuses; int c;
    Bmc_MulPar_t Pars, * pPars = &Pars;
    memset( pPars, 0, sizeof(Bmc_MulPar_t) );
    pPars->TimeOutGlo =  30;
    pPars->TimeOutLoc =   2;
    pPars->TimeOutInc = 100;
    pPars->TimeOutGap =   0;
    pPars->TimePerOut =   0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "TLMGHsdvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeOutGlo = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeOutGlo < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeOutLoc = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeOutLoc <= 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeOutInc = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeOutInc <= 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeOutGap = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeOutGap <= 0 )
                goto usage;
            break;
        case 'H':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-H\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimePerOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimePerOut <= 0 )
                goto usage;
            break;
        case 's':
            pPars->fUseSyn ^= 1;
            break;
        case 'd':
            pPars->fDumpFinal ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9MultiProve(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9MultiProve(): The problem is combinational.\n" );
        return 1;
    }
    pAbc->Status = Gia_ManMultiProve( pAbc->pGia, pPars );
    vStatuses = Abc_FrameDeriveStatusArray( pAbc->pGia->vSeqModelVec );
    Abc_FrameReplacePoStatuses( pAbc, &vStatuses );
    Abc_FrameReplaceCexVec( pAbc, &pAbc->pGia->vSeqModelVec );
    return 0;

usage:
    Abc_Print( -2, "usage: &mprove [-TLMGH num] [-sdvwh]\n" );
    Abc_Print( -2, "\t         proves multi-output testcase by applying several engines\n" );
    Abc_Print( -2, "\t-T num : approximate global runtime limit in seconds [default = %d]\n",     pPars->TimeOutGlo );
    Abc_Print( -2, "\t-L num : approximate local runtime limit in seconds [default = %d]\n",      pPars->TimeOutLoc );
    Abc_Print( -2, "\t-M num : percentage of local runtime limit increase [default = %d]\n",      pPars->TimeOutInc );
    Abc_Print( -2, "\t-G num : approximate gap runtime limit in seconds [default = %d]\n",        pPars->TimeOutGap );
    Abc_Print( -2, "\t-H num : timeout per output in milliseconds [default = %d]\n",              pPars->TimePerOut );
    Abc_Print( -2, "\t-s     : toggle using combinational synthesis [default = %s]\n",            pPars->fUseSyn?      "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle dumping invariant into a file [default = %s]\n",            pPars->fDumpFinal?   "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",             pPars->fVerbose?     "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing additional verbose information [default = %s]\n",  pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SplitProve( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Cec_GiaSplitTest( Gia_Man_t * p, int nProcs, int nTimeOut, int nIterMax, int LookAhead, int fVerbose, int fVeryVerbose, int fSilent );
    int c, nProcs = 1, nTimeOut = 10, nIterMax = 0, LookAhead = 1, fVerbose = 0, fVeryVerbose = 0, fSilent = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PTILsvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nProcs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nProcs <= 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut <= 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIterMax < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            LookAhead = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( LookAhead <= 0 || LookAhead > 100 )
            {
                Abc_Print( -1, "Look-ahead value (\"-L <num>\") should be between 1 and 100.\n", LookAhead );
                goto usage;
            }
            break;
        case 's':
            fSilent ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SplitProve(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9SplitProve(): The problem is sequential.\n" );
        return 1;
    }
    pAbc->Status = Cec_GiaSplitTest( pAbc->pGia, nProcs, nTimeOut, nIterMax, LookAhead, fVerbose, fVeryVerbose, fSilent );
    pAbc->pCex = pAbc->pGia->pCexComb;  pAbc->pGia->pCexComb = NULL;
    return 0;

usage:
    Abc_Print( -2, "usage: &splitprove [-PTIL num] [-svwh]\n" );
    Abc_Print( -2, "\t         proves CEC problem by case-splitting\n" );
    Abc_Print( -2, "\t-P num : the number of concurrent processes [default = %d]\n",          nProcs );
    Abc_Print( -2, "\t-T num : runtime limit in seconds per subproblem [default = %d]\n",     nTimeOut );
    Abc_Print( -2, "\t-I num : the max number of iterations (0 = infinity) [default = %d]\n", nIterMax );
    Abc_Print( -2, "\t-L num : maximum look-ahead during cofactoring [default = %d]\n",       LookAhead );
    Abc_Print( -2, "\t-s     : enable silent computation (no reporting) [default = %s]\n",    fSilent? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",         fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing more verbose information [default = %s]\n",    fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SProve( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pGiaUse = pAbc->pGia, * pGiaTemp = NULL;
    Wlc_Ntk_t * pWlc = (Wlc_Ntk_t *)pAbc->pAbcWlc;
    char * pReplayFile = NULL, * pUfarArgs = NULL, * pUfarArgsAlloc = NULL;
    int c, nProcs = 6, nProcsNew = 0, nTimeOut = 3, nTimeOut2 = 10, nTimeOut3 = 100, fUseUif = 0, fVerbose = 0, fVeryVerbose = 0, fSilent = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PTUCWRusvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nProcsNew = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nProcsNew <= 0 || nProcsNew > 6 )
                goto usage;
            nProcs = nProcsNew;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut <= 0 )
                goto usage;
            break;
        case 'U':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-U\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nTimeOut2 = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut2 <= 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by a string.\n" );
                goto usage;
            }
            {
                int iArg, nChars = 0;
                ABC_FREE( pUfarArgsAlloc );
                for ( iArg = globalUtilOptind; iArg < argc; iArg++ )
                    nChars += (int)strlen(argv[iArg]) + 1;
                pUfarArgsAlloc = ABC_ALLOC( char, nChars + 1 );
                pUfarArgsAlloc[0] = 0;
                for ( iArg = globalUtilOptind; iArg < argc; iArg++ )
                {
                    if ( iArg > globalUtilOptind )
                        strcat( pUfarArgsAlloc, " " );
                    strcat( pUfarArgsAlloc, argv[iArg] );
                }
                pUfarArgs = pUfarArgsAlloc;
                globalUtilOptind = argc;
            }
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nTimeOut3 = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut3 <= 0 )
                goto usage;
            break;                          
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by a file name.\n" );
                goto usage;
            }
            pReplayFile = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'u':
            fUseUif ^= 1;
            break;
        case 's':
            fSilent ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( fUseUif )
    {
        pGiaUse = NULL;
        if ( pWlc == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9SProve(): There is no word-level design for option \"-u\".\n" );
            ABC_FREE( pUfarArgsAlloc );
            return 1;
        }
        pGiaTemp = Wlc_NtkBitBlast( pWlc, NULL );
        if ( pGiaTemp == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9SProve(): Word-level bit-blasting has failed.\n" );
            ABC_FREE( pUfarArgsAlloc );
            return 1;
        }
        if ( (Gia_ManPoNum(pGiaTemp) & 1) == 1 )
        {
            Abc_Print( -1, "Abc_CommandAbc9SProve(): Internal \"&miter -x\" requires even number of bit-level outputs.\n" );
            Gia_ManStop( pGiaTemp );
            ABC_FREE( pUfarArgsAlloc );
            return 1;
        }
        pGiaUse = Gia_ManTransformMiter2( pGiaTemp );
        Gia_ManStop( pGiaTemp );
        pGiaTemp = NULL;
    }
    else if ( pUfarArgs != NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SProve(): Option \"-C\" requires \"-u\".\n" );
        ABC_FREE( pUfarArgsAlloc );
        return 1;
    }
    if ( pGiaUse == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SProve(): There is no AIG.\n" );
        ABC_FREE( pUfarArgsAlloc );
        return 1;
    }
    if ( Gia_ManRegNum(pGiaUse) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9SProve(): The problem is combinational.\n" );
        if ( fUseUif )
            Gia_ManStop( pGiaUse );
        ABC_FREE( pUfarArgsAlloc );
        return 1;
    }
    pAbc->Status = Cec_GiaProveTest( pGiaUse, nProcs, nTimeOut, nTimeOut2, nTimeOut3, fUseUif, pWlc, fVerbose, fVeryVerbose, fSilent, pReplayFile, pUfarArgs );
    Abc_FrameReplaceCex( pAbc, &pGiaUse->pCexSeq ); 
    if ( fUseUif )
        Gia_ManStop( pGiaUse );
    ABC_FREE( pUfarArgsAlloc );
    return 0;

usage:
    Abc_Print( -2, "usage: &sprove [-PTUW num] [-C str] [-R file] [-usvwh]\n" );
    Abc_Print( -2, "\t         proves CEC problem by case-splitting\n" );
    Abc_Print( -2, "\t-P num : the number of concurrent processes (1 <= num <= 6) [default = %d]\n", nProcs );
    Abc_Print( -2, "\t-T num : runtime limit in seconds per subproblem [default = %d]\n",     nTimeOut );
    Abc_Print( -2, "\t-U num : second-stage timeout in seconds [default = %d]\n", nTimeOut2 );
    Abc_Print( -2, "\t-C str : with -u, pass this option string to internal %%ufar\n" );
    Abc_Print( -2, "\t-W num : runtime limit in seconds per subproblem [default = %d]\n",     nTimeOut3 );
    Abc_Print( -2, "\t-R str : dump replay/trace file for later execution by &sprove2\n" );
    Abc_Print( -2, "\t-u     : enable concurrent UFAR on word-level design (uses internal %%blast + &miter -x)\n" );
    Abc_Print( -2, "\t-s     : enable silent computation (no reporting) [default = %s]\n",    fSilent? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",         fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing more verbose information [default = %s]\n",    fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    ABC_FREE( pUfarArgsAlloc );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SProve2( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pGiaUse = pAbc->pGia, * pGiaTemp = NULL;
    Wlc_Ntk_t * pWlc = (Wlc_Ntk_t *)pAbc->pAbcWlc;
    char * pTraceFile = NULL;
    int c, nProcs = 0, nTimeOut = 0, nTimeOut2 = 0, nTimeOut3 = 0, fUseUif = 0, fVerbose = 0, fVeryVerbose = 0, fSilent = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "svwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 's':
            fSilent ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( globalUtilOptind >= argc )
    {
        Abc_Print( -1, "Command &sprove2 expects a replay file name.\n" );
        goto usage;
    }
    pTraceFile = argv[globalUtilOptind];
    globalUtilOptind++;
    if ( globalUtilOptind != argc )
        goto usage;
    if ( !Cec_GiaReplayReadParams( pTraceFile, &nProcs, &nTimeOut, &nTimeOut2, &nTimeOut3, &fUseUif ) )
    {
        Abc_Print( -1, "Abc_CommandAbc9SProve2(): Cannot read replay file \"%s\".\n", pTraceFile );
        return 1;
    }
    if ( fUseUif )
    {
        pGiaUse = NULL;
        if ( pWlc == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9SProve2(): Replay requires word-level design for UIF mode.\n" );
            return 1;
        }
        pGiaTemp = Wlc_NtkBitBlast( pWlc, NULL );
        if ( pGiaTemp == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9SProve2(): Word-level bit-blasting has failed.\n" );
            return 1;
        }
        if ( (Gia_ManPoNum(pGiaTemp) & 1) == 1 )
        {
            Abc_Print( -1, "Abc_CommandAbc9SProve2(): Internal \"&miter -x\" requires even number of bit-level outputs.\n" );
            Gia_ManStop( pGiaTemp );
            return 1;
        }
        pGiaUse = Gia_ManTransformMiter2( pGiaTemp );
        Gia_ManStop( pGiaTemp );
        pGiaTemp = NULL;
    }
    if ( pGiaUse == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SProve2(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pGiaUse) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9SProve2(): The problem is combinational.\n" );
        if ( fUseUif )
            Gia_ManStop( pGiaUse );
        return 1;
    }
    pAbc->Status = Cec_GiaReplayTest( pGiaUse, pWlc, pTraceFile, fVerbose, fVeryVerbose, fSilent );
    Abc_FrameReplaceCex( pAbc, &pGiaUse->pCexSeq );
    if ( fUseUif )
        Gia_ManStop( pGiaUse );
    return 0;

usage:
    Abc_Print( -2, "usage: &sprove2 <trace_file> [-svwh]\n" );
    Abc_Print( -2, "\t         replays &sprove strategy stored in the given trace file\n" );
    Abc_Print( -2, "\t-s     : enable silent computation (no reporting) [default = %s]\n",    fSilent? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",         fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing more verbose information [default = %s]\n",    fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SplitSat( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Cnf_SplitSat( char * pFileName, int iVarBeg, int iVarEnd, int nLits, int Value, int TimeOut, int nProcs, int nIters, int Seed, int fPrepro, int fVerbose );
    int c, iVarBeg = 0, iVarEnd = ABC_INFINITY, nLits = 10, Value = 2, TimeOut = 5, nProcs = 1, nIters = 1, Seed = 0, fPrepro = 0, fVerbose = 0; char * pFileName = NULL;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "BENVTPISpvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by a positive integer.\n" );
                goto usage;
            }
            iVarBeg = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iVarBeg < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by a positive integer.\n" );
                goto usage;
            }
            iVarEnd = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iVarEnd < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nLits = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLits < 0 )
                goto usage;
            break;                                    
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by a positive integer.\n" );
                goto usage;
            }
            Value = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Value < 0 || Value > 2 )
                goto usage;
            break;                  
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by a positive integer.\n" );
                goto usage;
            }
            TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeOut < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nProcs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nProcs <= 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;            
        case 'p':
            fPrepro ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    // get the file name
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9SplitSat(): CNF file names should be given on the command line.\n" );
        return 1;
    }
    {        
        FILE * pFile;
        pFileName = argv[globalUtilOptind];
        pFile = fopen( pFileName, "r" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Cannot open file \"%s\" with the input test patterns.\n", pFileName );
            return 0;
        }
        fclose( pFile );
    }
    Cnf_SplitSat( pFileName, iVarBeg, iVarEnd, nLits, Value, TimeOut, nProcs, nIters, Seed, fPrepro, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &splitsat [-BENVTPIS num] [-pvh]\n" );
    Abc_Print( -2, "\t         solves CNF-based SAT problem by randomized case-splitting\n" );
    Abc_Print( -2, "\t-B num : the first CNF variable to use for splitting [default = %d]\n",         iVarBeg );
    Abc_Print( -2, "\t-E num : the last CNF variable to use for splitting [default = %d]\n",          iVarEnd );
    Abc_Print( -2, "\t-N num : the number of CNF variables to use for splitting [default = %d]\n",    nLits );
    Abc_Print( -2, "\t-V num : the variable values to use (0, 1, or 2 for \"any\") [default = %d]\n", Value );
    Abc_Print( -2, "\t-T num : the runtime limit in seconds per subproblem [default = %d]\n",         TimeOut );
    Abc_Print( -2, "\t-P num : the number of concurrent processes [default = %d]\n",                  nProcs );
    Abc_Print( -2, "\t-I num : the max number of iterations (0 = infinity) [default = %d]\n",         nIters );
    Abc_Print( -2, "\t-S num : the random seed used to generate cofactors [default = %d]\n",          Seed );    
    Abc_Print( -2, "\t-p     : toggle using SatELIte (http://minisat.se/SatELite.html) [default = %s]\n", fPrepro? "yes": "no" );    
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",                 fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Bmc( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    Bmc_AndPar_t Pars, * pPars = &Pars;
    memset( pPars, 0, sizeof(Bmc_AndPar_t) );
    pPars->nStart        =    0;  // starting timeframe
    pPars->nFramesMax    =    0;  // maximum number of timeframes
    pPars->nFramesAdd    =   50;  // the number of additional frames
    pPars->nConfLimit    =    0;  // maximum number of conflicts at a node
    pPars->nTimeOut      =    0;  // timeout in seconds
    pPars->nLutSize      =    6;  // max LUT size for CNF computation
    pPars->nProcs        =    1;  // the number of parallel solvers
    pPars->fLoadCnf      =    0;  // dynamic CNF loading
    pPars->fDumpFrames   =    0;  // dump unrolled timeframes
    pPars->fUseSynth     =    0;  // use synthesis
    pPars->fUseOldCnf    =    0;  // use old CNF construction
    pPars->fVerbose      =    0;  // verbose
    pPars->fVeryVerbose  =    0;  // very verbose
    pPars->fNotVerbose   =    0;  // skip line-by-line print-out
    pPars->iFrame        =    0;  // explored up to this frame
    pPars->nFailOuts     =    0;  // the number of failed outputs
    pPars->nDropOuts     =    0;  // the number of dropped outputs
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "SFATKdscvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nStart < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesMax < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesAdd = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesAdd < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOut < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 0 )
                goto usage;
            break;
        case 'd':
            pPars->fDumpFrames ^= 1;
            break;
        case 's':
            pPars->fUseSynth ^= 1;
            break;
        case 'c':
            pPars->fUseOldCnf ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bmc(): There is no AIG.\n" );
        return 0;
    }
    pAbc->Status  = Gia_ManBmcPerform( pAbc->pGia, pPars );
    pAbc->nFrames = pPars->iFrame;
    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    return 0;

usage:
    Abc_Print( -2, "usage: &bmc [-SFATK num] [-dscvwh]\n" );
    Abc_Print( -2, "\t         performs bounded model checking\n" );
    Abc_Print( -2, "\t-S num : the starting timeframe [default = %d]\n",                      pPars->nStart );
    Abc_Print( -2, "\t-F num : the maximum number of timeframes [default = %d]\n",            pPars->nFramesMax );
    Abc_Print( -2, "\t-A num : the number of additional frames to unroll [default = %d]\n",   pPars->nFramesAdd );
    Abc_Print( -2, "\t-T num : approximate timeout in seconds [default = %d]\n",              pPars->nTimeOut );
    Abc_Print( -2, "\t-K num : the maximum cut size for CNF computation [default = %d]\n",    pPars->nLutSize );
    Abc_Print( -2, "\t-d     : toggle dumping unfolded timeframes [default = %s]\n",          pPars->fDumpFrames?  "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle synthesizing unrolled timeframes [default = %s]\n",     pPars->fUseSynth?    "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle using old CNF computation [default = %s]\n",            pPars->fUseOldCnf?   "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",         pPars->fVerbose?     "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing information about unfolding [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SBmc( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Bmcs_ManPerform( Gia_Man_t * pGia, Bmc_AndPar_t * pPars );
    extern int Bmcg_ManPerform( Gia_Man_t * pGia, Bmc_AndPar_t * pPars );
    Bmc_AndPar_t Pars, * pPars = &Pars; int c;
    memset( pPars, 0, sizeof(Bmc_AndPar_t) );
    pPars->nStart        =    0;  // starting timeframe
    pPars->nFramesMax    =    0;  // maximum number of timeframes
    pPars->nFramesAdd    =    1;  // the number of additional frames
    pPars->nConfLimit    =    0;  // maximum number of conflicts at a node
    pPars->nTimeOut      =    0;  // timeout in seconds
    pPars->nLutSize      =    0;  // max LUT size for CNF computation
    pPars->nProcs        =    1;  // the number of parallel solvers
    pPars->fLoadCnf      =    0;  // dynamic CNF loading
    pPars->fDumpFrames   =    0;  // dump unrolled timeframes
    pPars->fUseSynth     =    0;  // use synthesis
    pPars->fUseOldCnf    =    0;  // use old CNF construction
    pPars->fUseGlucose   =    0;  // use Glucose 3.0
    pPars->fUseEliminate =    0;  // use variable elimination
    pPars->fVerbose      =    0;  // verbose
    pPars->fVeryVerbose  =    0;  // very verbose
    pPars->fNotVerbose   =    0;  // skip line-by-line print-out
    pPars->iFrame        =    0;  // explored up to this frame
    pPars->nFailOuts     =    0;  // the number of failed outputs
    pPars->nDropOuts     =    0;  // the number of dropped outputs
    pPars->pFuncOnFrameDone = pAbc->pFuncOnFrameDone; // frame done callback

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PCFATgevwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nProcs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nProcs < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nConfLimit < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesMax < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesAdd = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesAdd < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOut < 0 )
                goto usage;
            break;
        case 'g':
            pPars->fUseGlucose ^= 1;
            break;
        case 'e':
            pPars->fUseEliminate ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bmcs(): There is no AIG.\n" );
        return 0;
    }
    if ( pPars->nProcs > 4 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bmcs(): Currently this command can run at most 4 concurrent solvers.\n" );
        return 0;
    }
    pAbc->Status  = pPars->fUseGlucose ? Bmcg_ManPerform(pAbc->pGia, pPars) : Bmcs_ManPerform(pAbc->pGia, pPars);
    pAbc->nFrames = pPars->iFrame;
    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    return 0;

usage:
    Abc_Print( -2, "usage: &bmcs [-PCFAT num] [-gevwh]\n" );
    Abc_Print( -2, "\t         performs bounded model checking\n" );
    Abc_Print( -2, "\t-P num : the number of parallel solvers [default = %d]\n",              pPars->nProcs );
    Abc_Print( -2, "\t-C num : the SAT solver conflict limit [default = %d]\n",               pPars->nConfLimit );
    Abc_Print( -2, "\t-F num : the maximum number of timeframes [default = %d]\n",            pPars->nFramesMax );
    Abc_Print( -2, "\t-A num : the number of additional frames to unroll [default = %d]\n",   pPars->nFramesAdd );
    Abc_Print( -2, "\t-T num : approximate timeout in seconds [default = %d]\n",              pPars->nTimeOut );
    Abc_Print( -2, "\t-g     : toggle using Glucose 3.0 by Gilles Audemard and Laurent Simon [default = %s]\n", pPars->fUseGlucose?  "Glucose" : "Satoko" );
    Abc_Print( -2, "\t-e     : toggle using variable eliminatation [default = %s]\n",         pPars->fUseEliminate?"yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",         pPars->fVerbose?     "yes": "no" );
    Abc_Print( -2, "\t-w     : toggle printing information about unfolding [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ChainBmc( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Bmc_ChainTest( Gia_Man_t * p, int nFrameMax, int nConfMax, int fVerbose, int fVeryVerbose, Vec_Ptr_t ** pvCexes );
    Vec_Ptr_t * vCexes = NULL;
    int nFrameMax    =  200;
    int nConfMax     =    0;
    int fVerbose     =    0;
    int fVeryVerbose =    0;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FCvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrameMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrameMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfMax < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9ChainBmc(): There is no AIG.\n" );
        return 0;
    }
    if ( !Gia_ManRegNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9ChainBmc(): The AIG is combinational.\n" );
        return 0;
    }
    Bmc_ChainTest( pAbc->pGia, nFrameMax, nConfMax, fVerbose, fVeryVerbose, &vCexes );
    if ( vCexes ) Vec_PtrFreeFree( vCexes );
    //pAbc->Status  = ...;
    //pAbc->nFrames = pPars->iFrame;
    //Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    return 0;
usage:
    Abc_Print( -2, "usage: &chainbmc [-FC <num>] [-vwh]\n" );
    Abc_Print( -2, "\t           runs a specialized flavor of BMC\n" );
    Abc_Print( -2, "\t-F <num> : the max number of timeframes (0 = unused) [default = %d]\n", nFrameMax );
    Abc_Print( -2, "\t-C <num> : the max number of conflicts (0 = unused) [default = %d]\n", nConfMax );
    Abc_Print( -2, "\t-v       : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing even more information [default = %s]\n", fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9BCore( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c;
    Bmc_BCorePar_t Pars, * pPars = &Pars;
    memset( pPars, 0, sizeof(Bmc_BCorePar_t) );
    pPars->iFrame        =   10;  // timeframe
    pPars->iOutput       =    0;  // property output
    pPars->nTimeOut      =    0;  // timeout in seconds
    pPars->pFilePivots   = NULL;  // file name with AIG IDs of pivot objects
    pPars->pFileProof    = NULL;  // file name to write the resulting proof
    pPars->fVerbose      =    0;  // verbose output
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FOTVvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->iFrame = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->iFrame < 0 )
                goto usage;
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->iOutput = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->iOutput < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOut < 0 )
                goto usage;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by a file name.\n" );
                goto usage;
            }
            pPars->pFilePivots = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9BCore(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9BCore(): AIG has no registers.\n" );
        return 0;
    }
    // get the file name
    if ( pPars->pFilePivots != NULL )
    {
        FILE * pFile;
        pFile = fopen( pPars->pFilePivots, "r" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9BCore(): Cannot open file \"%s\" with pivot node IDs.\n", pPars->pFilePivots );
            return 0;
        }
        fclose( pFile );
    }
    // get the file name
    if ( argc == globalUtilOptind + 1 )
    {
        FILE * pFile;
        pPars->pFileProof = argv[globalUtilOptind];
        pFile = fopen( pPars->pFileProof, "wb" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9BCore(): Cannot open file \"%s\" for writing the proof.\n", pPars->pFileProof );
            return 0;
        }
        fclose( pFile );
    }
    Bmc_ManBCorePerform( pAbc->pGia, pPars );
    return 0;

usage:
    Abc_Print( -2, "usage: &bcore [-FOTV num] [-vh] <file>\n" );
    Abc_Print( -2, "\t         records UNSAT core of the BMC instance\n" );
    Abc_Print( -2, "\t-F num : the zero-based index of a timeframe [default = %d]\n",         pPars->iFrame );
    Abc_Print( -2, "\t-O num : the zero-based index of a primary output [default = %d]\n",    pPars->iOutput );
    Abc_Print( -2, "\t-T num : approximate timeout in seconds [default = %d]\n",              pPars->nTimeOut );
    Abc_Print( -2, "\t-V file: file name with AIG IDs of pivot variables [default = no pivots]\n" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",         pPars->fVerbose?     "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : file name to write the resulting proof [default = stdout]\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ICheck( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, nFramesMax = 1, nTimeOut = 0, fEmpty = 0, fSearch = 1, fReverse = 0, fBackTopo = 0, fDump = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "MTesrbdvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFramesMax <= 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 'e':
            fEmpty ^= 1;
            break;
        case 's':
            fSearch ^= 1;
            break;
        case 'r':
            fReverse ^= 1;
            break;
        case 'b':
            fBackTopo ^= 1;
            break;
        case 'd':
            fDump ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9ICheck(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9ICheck(): The AIG is combinational.\n" );
        return 0;
    }
    Vec_IntFreeP( &pAbc->vIndFlops );
    if ( fSearch )
        pAbc->vIndFlops = Bmc_PerformISearch( pAbc->pGia, nFramesMax, nTimeOut, fReverse, fBackTopo, fDump, fVerbose );
    else
        Bmc_PerformICheck( pAbc->pGia, nFramesMax, nTimeOut, fEmpty, fVerbose );
    pAbc->nIndFrames = pAbc->vIndFlops ? nFramesMax : 0;
    return 0;

usage:
    Abc_Print( -2, "usage: &icheck [-MT num] [-esrbdvh]\n" );
    Abc_Print( -2, "\t         performs specialized induction check\n" );
    Abc_Print( -2, "\t-M num : the number of timeframes used for induction [default = %d]\n",    nFramesMax );
    Abc_Print( -2, "\t-T num : approximate global runtime limit in seconds [default = %d]\n",    nTimeOut );
    Abc_Print( -2, "\t-e     : toggle using empty set of next-state functions [default = %s]\n", fEmpty? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle searching for a minimal subset [default = %s]\n",          fSearch? "yes": "no" );
    Abc_Print( -2, "\t-r     : toggle searching in the reverse order [default = %s]\n",          fReverse? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle searching in backward order from POs [default = %s]\n",    fBackTopo? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle printing out the resulting set [default = %s]\n",          fDump? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n",            fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SatTest( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Bmc_LoadTest( Gia_Man_t * pGia, int fLoadCnf, int fVerbose );
    int c, fLoadCnf = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "cvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'c':
            fLoadCnf ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SatTest(): There is no AIG.\n" );
        return 0;
    }
    Bmc_LoadTest( pAbc->pGia, fLoadCnf, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &sattest [-cvh]\n" );
    Abc_Print( -2, "\t         performs testing of dynamic CNF loading\n" );
    Abc_Print( -2, "\t-c     : toggle dynamic CNF loading [default = %s]\n",          fLoadCnf? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9FFTest( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ParFfSetDefault( Bmc_ParFf_t * p );
    extern void Gia_ManFaultTest( Gia_Man_t * p, Gia_Man_t * pG, Bmc_ParFf_t * pPars );
    Bmc_ParFf_t Pars, * pPars = &Pars;
    char * pFileName = NULL, * pFileName2 = NULL;
    Gia_Man_t * pGold = NULL;
    int c;
    Gia_ParFfSetDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ATNKSGFkbsfcdeunvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->Algo = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->Algo < 0 || pPars->Algo > 4 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOut < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nIterCheck = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nIterCheck < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nCardConstr = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCardConstr <= 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a string.\n" );
                goto usage;
            }
            pPars->pFormStr = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a file name.\n" );
                goto usage;
            }
            pFileName2 = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by a file name.\n" );
                goto usage;
            }
            pFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'k':
            pPars->fNonStrict ^= 1;
            break;
        case 'b':
            pPars->fBasic ^= 1;
            break;
        case 's':
            pPars->fStartPats ^= 1;
            break;
        case 'f':
            pPars->fFfOnly ^= 1;
            break;
        case 'c':
            pPars->fCheckUntest ^= 1;
            break;
        case 'd':
            pPars->fDump ^= 1;
            break;
        case 'e':
            pPars->fDumpDelay ^= 1;
            break;
        case 'u':
            pPars->fDumpUntest ^= 1;
            break;
        case 'n':
            pPars->fDumpNewFaults ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    // read string from file
    if ( pFileName2 )
    {
        if ( !strcmp( Extra_FileNameExtension(pFileName2), "blif" ) )
        {
            extern char * Gia_DeriveFormula( Gia_Man_t * pGia, char ** ppNamesIn );
            Abc_Ntk_t * pNtk2 = Io_Read( pFileName2, Io_ReadFileType(pFileName2), 1, 0 );
            Abc_Ntk_t * pNtk3 = Abc_NtkStrash( pNtk2, 0, 0, 0 );
            Gia_Man_t * pGia  = Abc_NtkClpGia( pNtk3 );
            char ** ppNamesIn = Abc_NtkCollectCioNames( pNtk2, 0 );
            if ( Gia_ManCoNum(pGia) == 1 )
                pPars->pFormStr = Gia_DeriveFormula( pGia, ppNamesIn );
            else
                printf( "The formula BLIF file contains the network with more one output.\n" );
            ABC_FREE( ppNamesIn );
            Gia_ManStop( pGia );
            Abc_NtkDelete( pNtk2 );
            Abc_NtkDelete( pNtk3 );
            if ( pPars->pFormStr == NULL )
                goto usage;
        }
        else
        {
            FILE * pFile = fopen( pFileName2, "r" );
            if ( pFile == NULL )
            {
                Abc_Print( -1, "Abc_CommandAbc9FFTest(): File name \"%s\" with formula is invalid.\n", pFileName2 );
                return 0;
            }
            pPars->pFormStr = Extra_FileRead(pFile);
            fclose( pFile );
            // skip spaces
            while ( 1 )
            {
                int Len = strlen(pPars->pFormStr);
                char Char = pPars->pFormStr[Len-1];
                if ( Char == ' ' || Char == '\n' || Char == '\r' || Char == '\t' || Char == -51 )
                    pPars->pFormStr[Len-1] = '\0';
                else
                    break;
            }
        }
        printf( "Using formula \"%s\" from file \"%s\".\n", pPars->pFormStr, pFileName2 );
    }
    if ( pPars->Algo == 0 && pPars->pFormStr == NULL )
    {
        Abc_Print( -1, "Formula string (-S <str>) should be selected when algorithm is 0 (-A 0).\n" );
        return 0;
    }
    if ( pPars->Algo != 0 && pPars->pFormStr != NULL )
    {
        Abc_Print( -1, "Algorithm should be 0 (-A 0) when formula string is selected (-S <str>).\n" );
        return 0;
    }
    // get the file name
    if ( argc == globalUtilOptind + 1 )
    {
        FILE * pFile;
        pPars->pFileName = argv[globalUtilOptind];
        pFile = fopen( pPars->pFileName, "r" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Cannot open file \"%s\" with the input test patterns.\n", pPars->pFileName );
            return 0;
        }
        fclose( pFile );
    }
    // check other conditions
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9FFTest(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 && pPars->Algo == 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9FFTest(): For delay testing, AIG should be sequential.\n" );
        return 0;
    }
    // check if the file is valid
    if ( pFileName )
    {
        FILE * pFile = fopen( pFileName, "r" );
        if ( pFile == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9FFTest(): File name \"%s\" with golden model is invalid.\n", pFileName );
            return 0;
        }
        fclose( pFile );
        pGold = Gia_AigerRead( pFileName, 0, 0, 0 );
        if ( pGold == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9FFTest(): Cannot read file \"%s\" with golden model.\n", pFileName );
            return 0;
        }
        if ( Gia_ManPiNum(pAbc->pGia) != Gia_ManPiNum(pGold) )
        {
            Gia_ManStop( pGold );
            Abc_Print( -1, "Abc_CommandAbc9FFTest(): Old model and gold model have different number of PIs.\n" );
            return 0;
        }
        if ( Gia_ManPoNum(pAbc->pGia) != Gia_ManPoNum(pGold) )
        {
            Gia_ManStop( pGold );
            Abc_Print( -1, "Abc_CommandAbc9FFTest(): Old model and gold model have different number of POs.\n" );
            return 0;
        }
        printf( "Entered spec AIG from file \"%s\".\n", pFileName );
    }
    Gia_ManFaultTest( pAbc->pGia, pGold ? pGold : pAbc->pGia, pPars );
    Gia_ManStopP( &pGold );
    if ( pFileName2 )
        ABC_FREE( pPars->pFormStr );
    return 0;

usage:
    Abc_Print( -2, "usage: &fftest [-ATNK num] [-kbsfcdeunvh] <file> [-GF file] [-S str]\n" );
    Abc_Print( -2, "\t          performs functional fault test generation\n" );
    Abc_Print( -2, "\t-A num  : selects fault model for all gates [default = %d]\n", pPars->Algo );
    Abc_Print( -2, "\t                0: fault model is not selected (use -S str)\n" );
    Abc_Print( -2, "\t                1: delay fault testing for sequential circuits\n" );
    Abc_Print( -2, "\t                2: traditional stuck-at fault: -S (((a&b)&~p)|q)\n" );
    Abc_Print( -2, "\t                3: complement fault: -S ((a&b)^p)\n" );
    Abc_Print( -2, "\t                4: functionally observable fault\n" );
    Abc_Print( -2, "\t-T num  : specifies approximate runtime limit in seconds [default = %d]\n",        pPars->nTimeOut );
    Abc_Print( -2, "\t-N num  : specifies iteration to check for fixed parameters [default = %d]\n",     pPars->nIterCheck );
    Abc_Print( -2, "\t-K num  : specifies cardinality constraint (num > 0) [default = unused]\n" );
    Abc_Print( -2, "\t-k      : toggles non-strict cardinality (n <= K, instead of n == K) [default = %s]\n",pPars->fNonStrict?  "yes": "no" );
    Abc_Print( -2, "\t-b      : toggles testing for single faults (the same as \"-K 1\") [default = %s]\n", pPars->fBasic?      "yes": "no" );
    Abc_Print( -2, "\t-s      : toggles starting with the all-0 and all-1 patterns [default = %s]\n",    pPars->fStartPats?  "yes": "no" );
    Abc_Print( -2, "\t-f      : toggles faults at flop inputs only with \"-A 1\" and \"-S str\" [default = %s]\n",          pPars->fFfOnly?     "yes": "no" );
    Abc_Print( -2, "\t-c      : toggles checking if there are untestable faults [default = %s]\n",       pPars->fCheckUntest? "yes": "no" );
    Abc_Print( -2, "\t-d      : toggles dumping test patterns into file \"<file>_tests.txt\" [default = %s]\n", pPars->fDump?       "yes": "no" );
    Abc_Print( -2, "\t-e      : toggles dumping test pattern pairs (delay faults only) [default = %s]\n", pPars->fDumpDelay? "yes": "no" );
    Abc_Print( -2, "\t-u      : toggles dumping untestable faults into \"<file>_untest.txt\" [default = %s]\n", pPars->fDumpUntest? "yes": "no" );
    Abc_Print( -2, "\t-n      : toggles dumping faults not detected by a given test set [default = %s]\n", pPars->fDumpNewFaults? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n",                  pPars->fVerbose?    "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t<file>  : (optional) file name with input test patterns\n\n");
    Abc_Print( -2, "\t-G file : (optional) file name with the golden model\n\n");
    Abc_Print( -2, "\t-F file : (optional) file name with the fault model in BLIF format\n");
    Abc_Print( -2, "\t-S str  : (optional) string representing the fault model\n");
    Abc_Print( -2, "\t          The following notations are used:\n");
    Abc_Print( -2, "\t            Functional variables: {a,b} (both a and b are always present)\n");
    Abc_Print( -2, "\t            Parameter variables: {p,q,r,s,t,u,v,w} (any number from 1 to 8)\n");
    Abc_Print( -2, "\t            Boolean operators: AND(&), OR(|), XOR(^), MUX(?:), NOT(~)\n");
    Abc_Print( -2, "\t            Parentheses should be used around each operator. Spaces not allowed.\n");
    Abc_Print( -2, "\t            Complement (~) is only allowed before variables (use DeMorgan law).\n");
    Abc_Print( -2, "\t            Examples:\n");
    Abc_Print( -2, "\t              (((a&b)&~p)|q)        stuck-at-0/1 at the output\n");
    Abc_Print( -2, "\t              (((a&~p)|q)&b)        stuck-at-0/1 at input a\n");
    Abc_Print( -2, "\t              (((a|p)&(b|q))&~r)    stuck-at-1 at the inputs and stuck-at-0 at the output\n");
    Abc_Print( -2, "\t              (((a&~p)&(b&~q))|r)   stuck-at-0 at the inputs and stuck-at-1 at the output\n");
    Abc_Print( -2, "\t              ((a&b)^p)             complement at the output\n");
    Abc_Print( -2, "\t              (((a^p)&(b^q))^r)     complement at the inputs and at the output\n");
    Abc_Print( -2, "\t              (a?(b?~s:r):(b?q:p))  functionally observable fault at the output\n");
    Abc_Print( -2, "\t              (p?(a|b):(a&b))       replace AND by OR\n");
    Abc_Print( -2, "\t           If the BLIF file is used for the formula with option \'-F\', following rules apply:\n");
    Abc_Print( -2, "\t              - the network should be combinational and have exactly one primary output\n");
    Abc_Print( -2, "\t              - input names should have only one character:\n");
    Abc_Print( -2, "\t                {a, b} (for functional variables)\n");
    Abc_Print( -2, "\t                {p,q,r,s,t,u,v,w} (for parameter variables)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Qbf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_QbfDumpFile( Gia_Man_t * pGia, int nPars );
    extern void Gia_QbfDumpFileInv( Gia_Man_t * pGia, int nPars );
    extern int Gia_QbfSolve( Gia_Man_t * pGia, int nPars, int nIterLimit, int nConfLimit, int nTimeOut, int nEncVars, int fGlucose, int fCadical, int fSilent, int fVerbose );
    int c, nPars   = -1;
    int nIterLimit =  0;
    int nConfLimit =  0;
    int nTimeOut   =  0;
    int nEncVars   =  0;
    int fDumpCnf   =  0;
    int fDumpCnf2  =  0;
    int fGlucose   =  0;
    int fCadical   =  0;
    int fSilent    =  0;
    int fVerbose   =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PICTKdegcsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nPars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPars < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIterLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIterLimit < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nConfLimit < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nEncVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nEncVars < 0 )
                goto usage;
            break;
        case 'd':
            fDumpCnf ^= 1;
            break;
        case 'e':
            fDumpCnf2 ^= 1;
            break;
        case 'g':
            fGlucose ^= 1;
            break;
        case 'c':
            fCadical ^= 1;
            break;
        case 's':
            fSilent ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "There is no current GIA.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Works only for combinational networks.\n" );
        return 1;
    }
    if ( Gia_ManPoNum(pAbc->pGia) != 1 )
    {
        Abc_Print( -1, "The miter should have one primary output.\n" );
        return 1;
    }
    if ( !(nPars > 0 && nPars < Gia_ManPiNum(pAbc->pGia)) )
    {
        Abc_Print( -1, "The number of parameter variables is invalid (should be > 0 and < PI num).\n" );
        return 1;
    }
    if ( fDumpCnf )
        Gia_QbfDumpFile( pAbc->pGia, nPars );
    else if ( fDumpCnf2 )
        Gia_QbfDumpFileInv( pAbc->pGia, nPars );
    else
        Gia_QbfSolve( pAbc->pGia, nPars, nIterLimit, nConfLimit, nTimeOut, nEncVars, fGlucose, fCadical, fSilent, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &qbf [-PICTK num] [-degcsvh]\n" );
    Abc_Print( -2, "\t         solves QBF problem EpVxM(p,x)\n" );
    Abc_Print( -2, "\t-P num : number of parameters p (should be the first PIs) [default = %d]\n", nPars );
    Abc_Print( -2, "\t-I num : quit after the given iteration even if unsolved [default = %d]\n", nIterLimit );
    Abc_Print( -2, "\t-C num : conflict limit per problem [default = %d]\n", nConfLimit );
    Abc_Print( -2, "\t-T num : global timeout [default = %d]\n", nTimeOut );
    Abc_Print( -2, "\t-K num : the number of input bits (for encoding miters only) [default = %d]\n", nEncVars );
    Abc_Print( -2, "\t-d     : toggle dumping QDIMACS file instead of solving (complemented QBF) [default = %s]\n", fDumpCnf? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle dumping QDIMACS file instead of solving (original QBF) [default = %s]\n", fDumpCnf2? "yes": "no" );
    Abc_Print( -2, "\t-g     : toggle using Glucose 3.0 by Gilles Audemard and Laurent Simon [default = %s]\n", fGlucose? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggle using CaDiCaL by Armin Biere [default = %s]\n", fCadical? "yes": "no" );
    Abc_Print( -2, "\t-s     : no printout except when a solution is found [default = %s]\n", fSilent? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n\n");
    Abc_Print( -2, "\t         As an example of using this command, consider specification (the three-input AND-gate) and implementation\n"); 
    Abc_Print( -2, "\t         (the circuit with function AND(XOR(x0, x1), x2)).  The problem is to check whether the output of the XOR (node n)\n"); 
    Abc_Print( -2, "\t         can be implemented differently, so that these two circuits are equivalent.  Obviously this can be done!\n");
    Abc_Print( -2, "\t         Simply replace XOR gate by AND gate.\n\n");
    Abc_Print( -2, "\t         > # file s2.blif\n");
    Abc_Print( -2, "\t         > .model and3\n");
    Abc_Print( -2, "\t         > .inputs x0 x1 x2 n\n");
    Abc_Print( -2, "\t         > .outputs F\n");
    Abc_Print( -2, "\t         > .names m x2 F\n");
    Abc_Print( -2, "\t         > 11 1\n");
    Abc_Print( -2, "\t         > .names x0 x1 m\n");
    Abc_Print( -2, "\t         > 11 1\n");
    Abc_Print( -2, "\t         > .end\n\n");
    Abc_Print( -2, "\t         > # file i2.blif\n");
    Abc_Print( -2, "\t         > .model impl\n");
    Abc_Print( -2, "\t         > .inputs x0 x1 x2 n\n");
    Abc_Print( -2, "\t         > .outputs F\n");
    Abc_Print( -2, "\t         > .names n x2 F\n");
    Abc_Print( -2, "\t         > 11 1\n");
    Abc_Print( -2, "\t         > #.names x0 x1 n\n");
    Abc_Print( -2, "\t         > #01 1\n");
    Abc_Print( -2, "\t         > #10 1\n");
    Abc_Print( -2, "\t         > .end\n\n");
    Abc_Print( -2, "\t         > abc 08> miter -n i2.blif s2.blif; ps\n");
    Abc_Print( -2, "\t         > impl_and3_miter               : i/o =    4/    1  lat =    0  and =      6  lev =  4\n");
    Abc_Print( -2, "\t         > abc 09> &get; &qbf -P 3\n");
    Abc_Print( -2, "\t         > The problem is UNSAT after 1 iterations.  Time =     0.00 sec\n\n");
    Abc_Print( -2, "\t         UNSAT here means that the ECO solution with the given rectification point *has* a solution.\n\n");
    Abc_Print( -2, "\t         For more info, refer to Figure 1 in the following paper A. Q. Dao, N.-Z. Lee, L.-C. Chen, M. P.-H. Lin,\n");
    Abc_Print( -2, "\t         J.-H. R. Jiang, A. Mishchenko, and R. Brayton, \"Efficient computation of ECO patch functions\", Proc. DAC'18.\n");
    Abc_Print( -2, "\t         https://people.eecs.berkeley.edu/~alanmi/publications/2018/dac18_eco.pdf\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9QVar( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_QbfQuantifyAll( Gia_Man_t * p, int nPars, int fAndAll, int fOrAll );
    Gia_Man_t * pTemp;
    int c, nPars   = -1;
    int fQuantU    =  0;
    int fQuantE    =  0;
    int fVerbose   =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Puevh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nPars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPars < 0 )
                goto usage;
            break;
        case 'u':
            fQuantU ^= 1;
            break;
        case 'e':
            fQuantE ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "There is no current GIA.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Works only for combinational networks.\n" );
        return 1;
    }
    if ( !(nPars > 0 && nPars < Gia_ManPiNum(pAbc->pGia)) )
    {
        Abc_Print( -1, "The number of parameter variables is invalid (should be > 0 and < PI num).\n" );
        return 1;
    }
    pTemp = Gia_QbfQuantifyAll( pAbc->pGia, nPars, fQuantU, fQuantE );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &qvar [-P num] [-uevh]\n" );
    Abc_Print( -2, "\t         derives cofactors w.r.t. the last NumPi-<num> variables\n" );
    Abc_Print( -2, "\t-P num : number of parameters p (should be the first PIs) [default = %d]\n", nPars );
    Abc_Print( -2, "\t-u     : toggle ANDing cofactors (universal quantification) [default = %s]\n", fQuantU? "yes": "no" );
    Abc_Print( -2, "\t-e     : toggle ORing cofactors (existential quantification) [default = %s]\n", fQuantE? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenQbf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_GenQbfMiter( Gia_Man_t * pGia, int nFrames, int nLutNum, int nLutSize, char * pStr, int fUseOut, int fVerbose );
    int nFrames   =    1;
    int nLutNum   =    1;
    int nLutSize  =    6;
    char * pStr   = NULL;
    int fUseOut   =    0;
    int fVerbose  =    0;
    int c;
    Gia_Man_t * pTemp;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FKNSovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutNum < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a string.\n" );
                goto usage;
            }
            pStr = Abc_UtilStrsav(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pStr == NULL )
                goto usage;
            break;
        case 'o':
            fUseOut ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "There is no current GIA.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Works only for sequential networks.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) < nLutSize * nLutNum )
    {
        Abc_Print( -1, "The number of flops (%d) is less than required (%d).\n", Gia_ManRegNum(pAbc->pGia), nLutSize * nLutNum );
        return 1;
    }
    if ( nFrames != 1 || nLutNum != 1 )
    {
        Abc_Print( -1, "Currently this commands works for one frame and one LUT.\n" );
        return 1;
    }
    pTemp = Gia_GenQbfMiter( pAbc->pGia, nFrames, nLutNum, nLutSize, pStr, fUseOut, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    ABC_FREE( pStr );
    return 0;

usage:
    Abc_Print( -2, "usage: &genqbf [-FKN num] [-ovh]\n" );
    Abc_Print( -2, "\t         generates QBF miter for computing an inductive invariant\n" );
    Abc_Print( -2, "\t-F num : the number of time frames for induction [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-K num : the LUT size [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-N num : the number of LUTs [default = %d]\n", nLutNum );
    Abc_Print( -2, "\t-o     : toggle using the last output [default = %s]\n", fUseOut? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenLutCas( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManGenLutCas( Gia_Man_t * p, char * pPermStr, int nVars, int nLuts, int LutSize, int Seed, int fVerbose );
    int nVars    =  0;
    int nLuts    =  2;
    int LutSize  =  6;
    int Seed     =  0;
    int fVerbose =  0;
    int c;
    char * pPermStr = NULL;
    Gia_Man_t * pTemp;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NMKSPvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nLuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLuts < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            LutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( LutSize < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by a string.\n" );
                goto usage;
            }
            pPermStr = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL && nVars == 0 ) 
    {
        Abc_Print( -1, "The number of inputs (%d) should be specified on the command line.\n", nVars );
        return 1;        
    }
    if ( pAbc->pGia )
        nVars = Gia_ManCiNum(pAbc->pGia);
    if ( pPermStr && (nLuts * LutSize != (int)strlen(pPermStr)) )
    {
        Abc_Print( -1, "Permutation \"%s\" has %d symbols instead of expected %d = %d * %d symbols (LutSize * nLuts).\n", 
            pPermStr, (int)strlen(pPermStr), LutSize * nLuts, LutSize, nLuts );
        return 1;
    }
    if ( nVars <= LutSize )
    {
        Abc_Print( -1, "The number of inputs (%d) should be more than LUT size (%d).\n", nVars, LutSize );
        return 1;
    }
    if ( nVars > 100 )
    {
        Abc_Print( -1, "The number of inputs (%d) should be less than 100.\n", nVars );
        return 1;
    }
    if ( nLuts < 2 || nLuts > 100  )
    {
        Abc_Print( -1, "The LUT count (%d) should be morein the range [2;100].\n", nLuts );
        return 1;
    }
    if ( LutSize < 2 || LutSize > 12 )
    {
        Abc_Print( -1, "The LUT size (%d) should be in the range [2;12].\n", LutSize );
        return 1;
    }
    if ( nVars > (nLuts-1)*(LutSize-1) + LutSize )
    {
        Abc_Print( -1, "Function with %d variables is too large for a cascade composed of %d connected %d-LUTs.\n", nVars, nLuts, LutSize );
        return 1;
    }
    pTemp = Gia_ManGenLutCas( pAbc->pGia, pPermStr, nVars, nLuts, LutSize, Seed, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &genlutcas[-NMKS num] [-P str] [-vh]\n" );
    Abc_Print( -2, "\t         generates a miter for synthesizing the LUT cascade\n" );
    Abc_Print( -2, "\t-N num : the number of primary inputs [default = %d]\n", nVars );
    Abc_Print( -2, "\t-M num : the number of LUTs [default = %d]\n", nLuts );
    Abc_Print( -2, "\t-K num : the LUT size [default = %d]\n", LutSize );
    Abc_Print( -2, "\t-S num : the random seed [default = %d]\n", Seed );
    Abc_Print( -2, "\t-P str : variable permutation (for example, \"abcd_aef\" for S44) [default = %s]\n", pPermStr ? pPermStr : "unused" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9HomoQbf( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_Gen2CreateMiter( int nLutSize, int nLutNum );
    int nLutSize  =  2;
    int nLutNum   =  3;
    int fVerbose  =  0;
    int c;
    Gia_Man_t * pTemp;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KNvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutNum < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pTemp = Gia_Gen2CreateMiter( nLutSize, nLutNum );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &homoqbf [-KN num] [-vh]\n" );
    Abc_Print( -2, "\t         generates QBF miter for the encoding problem\n" );
    Abc_Print( -2, "\t-K num : the LUT size [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-N num : the number of LUTs [default = %d]\n", nLutNum );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SatFx( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Bmc_FxCompute( Gia_Man_t * p );
    extern int Bmc_FxComputeOne( Gia_Man_t * p, int nIterMax, int nDiv2Add );
    int nIterMax =  5;
    int nDiv2Add = 10;
    int c, fDec  =  1;
    int fVerbose =  0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IDdvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIterMax < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nDiv2Add = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nDiv2Add < 0 )
                goto usage;
            break;
        case 'd':
            fDec ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SatFx(): There is no AIG.\n" );
        return 0;
    }
    if ( fDec )
        Bmc_FxComputeOne( pAbc->pGia, nIterMax, nDiv2Add );
    else
        Bmc_FxCompute( pAbc->pGia );
    return 0;

usage:
    Abc_Print( -2, "usage: &satfx [-ID num] [-dvh]\n" );
    Abc_Print( -2, "\t         performs SAT based shared logic extraction\n" );
    Abc_Print( -2, "\t-I num : the number of iterations of divisor extraction [default = %d]\n", nIterMax );
    Abc_Print( -2, "\t-D num : the number of divisors to extract in each iteration [default = %d]\n", nDiv2Add );
    Abc_Print( -2, "\t-d     : toggles decomposing the first output [default = %s]\n", fDec? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SatClp( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Vec_Str_t * Bmc_CollapseOne( Gia_Man_t * p, int nCubeLim, int nBTLimit, int fCanon, int fReverse, int fVerbose );
    int nCubeLim = 1000;
    int nBTLimit = 1000000;
    int fCanon   = 0;
    int fVerbose = 0;
    int c;

    Vec_Str_t * vSop;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CLcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCubeLim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCubeLim < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBTLimit < 0 )
                goto usage;
            break;
        case 'c':
            fCanon ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SatClp(): There is no AIG.\n" );
        return 0;
    }
    vSop = Bmc_CollapseOne( pAbc->pGia, nCubeLim, nBTLimit, fCanon, 0, fVerbose );
    printf( "%s\n", Vec_StrArray(vSop) );
    Vec_StrFree( vSop );
    return 0;

usage:
    Abc_Print( -2, "usage: &satclp [-CL num] [-cvh]\n" );
    Abc_Print( -2, "\t         performs SAT based collapsing\n" );
    Abc_Print( -2, "\t-C num : the limit on the SOP size of one output [default = %d]\n", nCubeLim );
    Abc_Print( -2, "\t-L num : the limit on the number of conflicts in one SAT call [default = %d]\n", nBTLimit );
    Abc_Print( -2, "\t-c     : toggles using canonical ISOP computation [default = %s]\n", fCanon? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Inse( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Vec_Int_t * Gia_ManInseTest( Gia_Man_t * p, Vec_Int_t * vInit, int nFrames, int nWords, int nTimeOut, int fSim, int fVerbose );
    int c, nFrames = 10, nWords = 1000, nTimeOut = 0, fSim = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FWTsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 's':
            fSim ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Inse(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Inse(): AIG is combinational.\n" );
        return 0;
    }
    if ( pAbc->pGia->vInitClasses != NULL )
    {
        Abc_Print( 1, "Abc_CommandAbc9Inse(): All-0 initial state is assumed.\n" );
        Vec_IntFreeP( &pAbc->pGia->vInitClasses );
    }
    pAbc->pGia->vInitClasses = Gia_ManInseTest( pAbc->pGia, NULL, nFrames, nWords, nTimeOut, fSim, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &inse [-FWT num] [-svh]\n" );
    Abc_Print( -2, "\t         experimental procedure\n" );
    Abc_Print( -2, "\t-F num : the number of timeframes [default = %d]\n",                    nFrames );
    Abc_Print( -2, "\t-W num : the number of machine words [default = %d]\n",                 nWords );
    Abc_Print( -2, "\t-T num : approximate global runtime limit in seconds [default = %d]\n", nTimeOut );
    Abc_Print( -2, "\t-s     : toggles using ternary simulation [default = %s]\n",            fSim?     "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",        fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Maxi( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Vec_Int_t * Gia_ManMaxiTest( Gia_Man_t * p, Vec_Int_t * vInit, int nFrames, int nWords, int nTimeOut, int fSim, int fVerbose );
    Vec_Int_t * vTemp;
    int c, nFrames = 5, nWords = 1000, nTimeOut = 0, fSim = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FWTsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 's':
            fSim ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Maxi(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Maxi(): AIG is combinational.\n" );
        return 0;
    }
    pAbc->pGia->vInitClasses = Gia_ManMaxiTest( pAbc->pGia, vTemp = pAbc->pGia->vInitClasses, nFrames, nWords, nTimeOut, fSim, fVerbose );
    Vec_IntFreeP( &vTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &maxi [-FWT num] [-svh]\n" );
    Abc_Print( -2, "\t         experimental procedure\n" );
    Abc_Print( -2, "\t-F num : the number of timeframes [default = %d]\n",                    nFrames );
    Abc_Print( -2, "\t-W num : the number of machine words [default = %d]\n",                 nWords );
    Abc_Print( -2, "\t-T num : approximate global runtime limit in seconds [default = %d]\n", nTimeOut );
    Abc_Print( -2, "\t-s     : toggles using ternary simulation [default = %s]\n",            fSim?     "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",        fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Bmci( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Gia_ManBmciTest( Gia_Man_t * p, Vec_Int_t * vInit, int nFrames, int nWords, int nTimeOut, int fSim, int fVerbose );
    int c, nFrames = 1000, nWords = 1000, nTimeOut = 0, fSim = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FWTsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 's':
            fSim ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bmci(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bmci(): AIG is combinational.\n" );
        return 0;
    }
    if ( pAbc->pGia->vInitClasses == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bmci(): Init array is not given.\n" );
        return 0;
    }
    Gia_ManBmciTest( pAbc->pGia, pAbc->pGia->vInitClasses, nFrames, nWords, nTimeOut, fSim, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &bmci [-FWT num] [-svh]\n" );
    Abc_Print( -2, "\t         experimental procedure\n" );
    Abc_Print( -2, "\t-F num : the number of timeframes [default = %d]\n",                    nFrames );
    Abc_Print( -2, "\t-W num : the number of machine words [default = %d]\n",                 nWords );
    Abc_Print( -2, "\t-T num : approximate global runtime limit in seconds [default = %d]\n", nTimeOut );
    Abc_Print( -2, "\t-s     : toggles using ternary simulation [default = %s]\n",            fSim?     "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",        fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9PoXsim( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Vec_Int_t * Gia_ManPoXSim( Gia_Man_t * p, int nFrames, int fVerbose );
    int c, nFrames = 1000, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bmci(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bmci(): AIG is combinational.\n" );
        return 0;
    }
    Vec_IntFreeP( &pAbc->vAbcObjIds );
    pAbc->vAbcObjIds = Gia_ManPoXSim( pAbc->pGia, nFrames, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &poxsim [-F num] [-vh]\n" );
    Abc_Print( -2, "\t         X-valued simulation of the multi-output sequential miter\n" );
    Abc_Print( -2, "\t-F num : the number of timeframes [default = %d]\n",                    nFrames );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",        fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Demiter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, fDumpFiles = 0, fDumpFilesTwo = 0, fDual = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ftdvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'f':
            fDumpFiles ^= 1;
            break;
        case 't':
            fDumpFilesTwo ^= 1;
            break;
        case 'd':
            fDual ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Demiter(): There is no AIG.\n" );
        return 0;
    }
    if ( fDumpFiles || fDumpFilesTwo )
    {
        char pName0[1000] = "miter_part0.aig";
        char pName1[1000] = "miter_part1.aig";
        Gia_Man_t * pPart1, * pPart2;
        if ( Gia_ManPoNum(pAbc->pGia) % 2 != 0 )
        {
            Abc_Print( -1, "Abc_CommandAbc9Demiter(): Does not look like a dual-output miter.\n" );
            return 0;
        }
        if ( fDumpFilesTwo )
            Gia_ManDemiterTwoWords( pAbc->pGia, &pPart1, &pPart2 );
        else
            Gia_ManDemiterDual( pAbc->pGia, &pPart1, &pPart2 );
        if ( pAbc->pGia->pSpec )
        {
            char * pGen = Extra_FileNameGeneric(pAbc->pGia->pSpec);
            sprintf( pName0, "%s_1.aig", pGen );
            sprintf( pName1, "%s_2.aig", pGen );
            ABC_FREE( pGen );
        }
        Gia_AigerWrite( pPart1, pName0, 0, 0, 0 );
        Gia_AigerWrite( pPart2, pName1, 0, 0, 0 );
        Gia_ManStop( pPart1 );
        Gia_ManStop( pPart2 );
        if ( fDumpFilesTwo )
            printf( "Two parts of the two-word miter are dumped into files \"%s\" and \"%s\".\n", pName0, pName1 );
        else
            printf( "Two parts of the dual-output miter are dumped into files \"%s\" and \"%s\".\n", pName0, pName1 );
        return 0;
    }
    if ( Gia_ManPoNum(pAbc->pGia) != 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Demiter(): Miter should have one output.\n" );
        return 0;
    }
    if ( fDual )
        pTemp = Gia_ManDemiterToDual( pAbc->pGia );
    else
        pTemp = Gia_ManDupDemiter( pAbc->pGia, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    if ( fVerbose )
        Gia_ManPrintStatsMiter( pTemp, 0 );
    return 0;

usage:
    Abc_Print( -2, "usage: &demiter [-ftdvh]\n" );
    Abc_Print( -2, "\t         decomposes a miter (by default, tries to extract an OR gate)\n" );
    Abc_Print( -2, "\t-f     : write files with two sides of a dual-output miter [default = %s]\n",  fDumpFiles? "yes": "no" );
    Abc_Print( -2, "\t-t     : write files with two sides of a two-word miter [default = %s]\n",  fDumpFilesTwo? "yes": "no" );
    Abc_Print( -2, "\t-d     : take single-output and decompose into dual-output [default = %s]\n",  fDual? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Fadds( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupWithNaturalBoxes( Gia_Man_t * p, int nFaddMin, int fVerbose );
    extern Gia_Man_t * Gia_ManDupWithArtificialBoxes( Gia_Man_t * p, int DelayC, int nPathMin, int nPathMax, int nPathLimit, int fUseFanout, int fXorTrick, int fIgnoreBoxDelays, int fVerbose );
    Gia_Man_t * pTemp, * pTemp2;
    int c, nFaddMin = 3, fUseNat = 0, fUseArt = 0, fVerbose = 0;
    int DelayC = 0, nPathMin = 3, nPathMax = 32, nPathLimit = 50, fUseFanout = 0, fUseXorTrick = 0, fIgnoreBoxDelays = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NBSLPnafxbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nFaddMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFaddMin < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            DelayC = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( DelayC < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            nPathMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPathMin < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nPathMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPathMax < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nPathLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nPathLimit < 0 )
                goto usage;
            break;
        case 'n':
            fUseNat ^= 1;
            break;
        case 'a':
            fUseArt ^= 1;
            break;
        case 'f':
            fUseFanout ^= 1;
            break;
        case 'x':
            fUseXorTrick ^= 1;
            break;
        case 'b':
            fIgnoreBoxDelays ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Fadds(): There is no AIG.\n" );
        return 0;
    }
    if ( fUseNat )
        pTemp = Gia_ManDupWithNaturalBoxes( pAbc->pGia, nFaddMin, fVerbose );
    else
    {
        pTemp = Gia_ManDup( pAbc->pGia );
        Gia_ManTransferTiming( pTemp, pAbc->pGia );
    }
    if ( fUseArt )
        pTemp2 = Gia_ManDupWithArtificialBoxes( pTemp, DelayC, nPathMin, nPathMax, nPathLimit, fUseFanout, fUseXorTrick, fIgnoreBoxDelays, fVerbose );
    else
    {
        pTemp2 = Gia_ManDup( pTemp );
        Gia_ManTransferTiming( pTemp2, pTemp );
    }
    Gia_ManStop( pTemp );
    Abc_FrameUpdateGia( pAbc, pTemp2 );
    return 0;
usage:
    Abc_Print( -2, "usage: &fadds [-NBSLP num] [-nafxvh]\n" );
    Abc_Print( -2, "\t         detects full-adder chains and puts them into white boxes\n" );
    Abc_Print( -2, "\t-n     : toggles detecting natural full-adder chains [default = %s]\n",              fUseNat? "yes": "no" );
    Abc_Print( -2, "\t-N num : minimum length of a natural full-adder chain to detect [default = %d]\n",   nFaddMin );
    Abc_Print( -2, "\t-a     : toggles detecting artificial full-adder chains [default = %s]\n",           fUseArt? "yes": "no" );
    Abc_Print( -2, "\t-B num : full-adder box delay (percentage of AND-gate delay) [default = %d]\n",      DelayC );
    Abc_Print( -2, "\t-S num : minimum length of an artificial full-adder chain [default = %d]\n",         nPathMin );
    Abc_Print( -2, "\t-L num : maximum length of an artificial full-adder chain [default = %d]\n",         nPathMax );
    Abc_Print( -2, "\t-P num : maximum number of artificial full-adder chains to detect [default = %d]\n", nPathLimit );
    Abc_Print( -2, "\t-f     : toggles allowing external fanouts in artificial chains [default = %s]\n",   fUseFanout? "yes": "no" );
    Abc_Print( -2, "\t-x     : toggles using XOR to generate fanouts in artificial chains [default = %s]\n",   fUseXorTrick? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggles ignoring boxes when computing delays [default = %s]\n",             fIgnoreBoxDelays? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",                     fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ATree( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_PolynCoreDetectTest( Gia_Man_t * pGia, int fAddExtra, int fAddCones, int fVerbose );
    Gia_Man_t * pTemp = NULL;
    int c, fAddExtra = 0, fAddCones = 0, fVerbose = 0, fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ecvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'e':
            fAddExtra ^= 1;
            break;
        case 'c':
            fAddCones ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Esop(): There is no AIG.\n" );
        return 0;
    }
    pTemp = Gia_PolynCoreDetectTest( pAbc->pGia, fAddExtra, fAddCones, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &atree [-ecvwh]\n" );
    Abc_Print( -2, "\t         extracts adder tree rooting in primary outputs\n" );
    Abc_Print( -2, "\t-e     : toggles adding extra outputs [default = %s]\n",  fAddExtra? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggles duplicating complete AIG [default = %s]\n",  fAddCones? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggles printing very verbose information [default = %s]\n",  fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Polyn( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_PolynBuild2Test( Gia_Man_t * pGia, char * pSign, int nExtra, int fSigned, int fVerbose, int fVeryVerbose );
    Vec_Int_t * vOrder = NULL; char * pSign = NULL;
    int c, nExtra = 0, fOld = 0, fSimple = 1, fSigned = 0, fVerbose = 0, fVeryVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NSoasvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nExtra = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nExtra < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by a char string without spaces.\n" );
                goto usage;
            }
            pSign = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'o':
            fOld ^= 1;
            break;
        case 'a':
            fSimple ^= 1;
            break;
        case 's':
            fSigned ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'w':
            fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Esop(): There is no AIG.\n" );
        return 0;
    }
    if ( argc >= globalUtilOptind + 1 )
    {
        printf( "Trailing symbols on the command line (\"%s\").\n", argv[globalUtilOptind] );
        return 0;
    }
    if ( fOld )
    {
        vOrder = fSimple ? NULL : Gia_PolynReorder( pAbc->pGia, fVerbose, fVeryVerbose );
        Gia_PolynBuild( pAbc->pGia, vOrder, fSigned, fVerbose, fVeryVerbose );
        Vec_IntFreeP( &vOrder );
    }
    else
        Gia_PolynBuild2Test( pAbc->pGia, pSign, nExtra, fSigned, fVerbose, fVeryVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &polyn [-N num] [-oasvwh] [-S str]\n" );
    Abc_Print( -2, "\t         derives algebraic polynomial from AIG\n" );
    Abc_Print( -2, "\t-N num : the number of additional primary outputs (-1 = unused) [default = %d]\n", nExtra );
    Abc_Print( -2, "\t-o     : toggles old computation [default = %s]\n",  fOld? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggles simple computation [default = %s]\n",  fSimple? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggles signed computation [default = %s]\n",  fSigned? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w     : toggles printing very verbose information [default = %s]\n",  fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t\n");
    Abc_Print( -2, "\t-S str : (optional) the output signature as a character string\n" );
    Abc_Print( -2, "\t         The format used to represent the output signature is very restrictive.\n" );
    Abc_Print( -2, "\t         It should be a string without spaces containing monomials in terms of\n" );
    Abc_Print( -2, "\t         inputs (i<num>) and outputs (o<num>) where <num> is 0-based. Coefficients\n" );
    Abc_Print( -2, "\t         are degrees of two, represented by log2 of their value: for example, \n" );
    Abc_Print( -2, "\t         \"2\" is 2^2 = 4, \"-4\" is -2^4=-16, \"-0\" is -2^0=-1, etc\n" );
    Abc_Print( -2, "\t         Two types of signature are accepted:\n" );
    Abc_Print( -2, "\t         (1) a sequence of monomials without parentheses (for example, \"-2*o0+1*o1+0*o2\")\n" );
    Abc_Print( -2, "\t         (2) a product of two sequences followed by a sum with a sequence\n" );
    Abc_Print( -2, "\t             (for example, \"(4*o0+2*o1+1*o2)*(4*i3+2*i4+1*i5)+(4*o3+2*o4+1*o5)\")\n" );
    Abc_Print( -2, "\t         Here is the signature of a signed 2-bit multiplier: \"(0*o0+1*o1+2*o2-3*o3)\"\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Acec( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    FILE * pFile;
    Acec_ParCec_t ParsCec, * pPars = &ParsCec;
    char ** pArgvNew;
    int c, nArgcNew;
    Acec_ManCecSetDefaultParams( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CTmdtbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->TimeLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->TimeLimit < 0 )
                goto usage;
            break;
        case 'm':
            pPars->fMiter ^= 1;
            break;
        case 'd':
            pPars->fDualOutput ^= 1;
            break;
        case 't':
            pPars->fTwoOutput ^= 1;
            break;
        case 'b':
            pPars->fBooth ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pPars->fMiter )
    {
        Gia_Man_t * pGia0, * pGia1, * pDual;
        if ( argc != globalUtilOptind )
        {
            Abc_Print( -1, "Abc_CommandAbc9Acec(): If the input is a miter, it cannot be given on the command line.\n" );
            return 1;
        }
        if ( pAbc->pGia == NULL )
        {
            Abc_Print( -1, "Abc_CommandAbc9Acec(): There is no AIG.\n" );
            return 1;
        }
        if ( pPars->fDualOutput )
        {
            if ( Gia_ManPoNum(pAbc->pGia) & 1 )
            {
                Abc_Print( -1, "The dual-output miter should have an even number of outputs.\n" );
                return 1;
            }
            if ( !pPars->fSilent )
            Abc_Print( 1, "Assuming the current network is a double-output miter. (Conflict limit = %d.)\n", pPars->nBTLimit );
            Gia_ManDemiterDual( pAbc->pGia, &pGia0, &pGia1 );
            pAbc->Status = Acec_Solve( pGia0, pGia1, pPars );
        }
        else if ( pPars->fTwoOutput )
        {
            if ( Gia_ManPoNum(pAbc->pGia) & 1 )
            {
                Abc_Print( -1, "The two-output miter should have an even number of outputs.\n" );
                return 1;
            }
            if ( !pPars->fSilent )
            Abc_Print( 1, "Assuming the current network is a two-word miter. (Conflict limit = %d.)\n", pPars->nBTLimit );
            Gia_ManDemiterTwoWords( pAbc->pGia, &pGia0, &pGia1 );
            pAbc->Status = Acec_Solve( pGia0, pGia1, pPars );
        }
        else // regular single- or multi-output miter
        {
            if ( !pPars->fSilent )
            Abc_Print( 1, "Assuming the current network is a regular single- or multi-output miter. (Conflict limit = %d.)\n", pPars->nBTLimit );
            pDual = Gia_ManDemiterToDual( pAbc->pGia );
            Gia_ManDemiterDual( pDual, &pGia0, &pGia1 );
            Gia_ManStop( pDual );
            pAbc->Status = Acec_Solve( pGia0, pGia1, pPars );
        }
        Abc_FrameReplaceCex( pAbc, &pGia0->pCexComb );
        Gia_ManStop( pGia0 );
        Gia_ManStop( pGia1 );
        return 0;
    }

    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;
    if ( nArgcNew == 0 || nArgcNew == 1 )
    {
        Gia_Man_t * pSecond;
        char * pTemp, * FileName = NULL;
        if ( nArgcNew == 0 )
        {
            FileName = pAbc->pGia->pSpec;
            if ( FileName == NULL )
            {
                Abc_Print( -1, "File name is not given on the command line.\n" );
                return 1;
            }
        }
        else // if ( nArgcNew == 1 )
        {
            FileName = pArgvNew[0];
            // fix the wrong symbol
            for ( pTemp = FileName; *pTemp; pTemp++ )
                if ( *pTemp == '>' )
                    *pTemp = '\\';
            if ( (pFile = fopen( FileName, "r" )) == NULL )
            {
                Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
                if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", NULL, NULL, NULL, NULL )) )
                    Abc_Print( 1, "Did you mean \"%s\"?", FileName );
                Abc_Print( 1, "\n" );
                return 1;
            }
            fclose( pFile );
        }
        pSecond = Gia_AigerRead( FileName, 0, 0, 0 );
        if ( pSecond == NULL )
        {
            Abc_Print( -1, "Reading AIGER has failed.\n" );
            return 0;
        }
        pAbc->Status = Acec_Solve( pAbc->pGia, pSecond, pPars );
        Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexComb );
        Gia_ManStop( pSecond );
    }
    else if ( nArgcNew == 2 )
    {
        Gia_Man_t * pGias[2] = {NULL};  int i;
        char * pTemp, * FileName[2] = { pArgvNew[0], pArgvNew[1] };
        for ( i = 0; i < 2; i++ )
        {
            // fix the wrong symbol
            for ( pTemp = FileName[i]; *pTemp; pTemp++ )
                if ( *pTemp == '>' )
                    *pTemp = '\\';
            if ( (pFile = fopen( FileName[i], "r" )) == NULL )
            {
                Abc_Print( -1, "Cannot open input file \"%s\". ", FileName[i] );
                if ( (FileName[i] = Extra_FileGetSimilarName( FileName[i], ".aig", NULL, NULL, NULL, NULL )) )
                    Abc_Print( 1, "Did you mean \"%s\"?", FileName[i] );
                Abc_Print( 1, "\n" );
                return 1;
            }
            fclose( pFile );
            pGias[i] = Gia_AigerRead( FileName[i], 0, 0, 0 );
            if ( pGias[i] == NULL )
            {
                Abc_Print( -1, "Reading AIGER has failed.\n" );
                return 0;
            }
        }
        pAbc->Status = Acec_Solve( pGias[0], pGias[1], pPars );
        Abc_FrameReplaceCex( pAbc, &pGias[0]->pCexComb );
        Gia_ManStop( pGias[0] );
        Gia_ManStop( pGias[1] );
    }
    else
    {
        Abc_Print( -1, "Too many command-line arguments.\n" );
        return 1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &acec [-CT num] [-mdtbvh] <file1> <file2>\n" );
    Abc_Print( -2, "\t         combinational equivalence checking for arithmetic circuits\n" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pPars->nBTLimit );
    Abc_Print( -2, "\t-T num : approximate runtime limit in seconds [default = %d]\n", pPars->TimeLimit );
    Abc_Print( -2, "\t-m     : toggle miter vs. two circuits [default = %s]\n", pPars->fMiter? "miter":"two circuits");
    Abc_Print( -2, "\t-d     : toggle using dual output miter [default = %s]\n", pPars->fDualOutput? "yes":"no");
    Abc_Print( -2, "\t-t     : toggle using two-word miter [default = %s]\n", pPars->fTwoOutput? "yes":"no");
    Abc_Print( -2, "\t-b     : toggle working with Booth multipliers [default = %s]\n", pPars->fBooth? "yes":"no");
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", pPars->fVerbose? "yes":"no");
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tfile1  : (optional) the file with the first network\n");
    Abc_Print( -2, "\tfile2  : (optional) the file with the second network\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Anorm( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, fBooth = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "bvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'b':
            fBooth ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Anorm(): There is no AIG.\n" );
        return 0;
    }
    pTemp = Acec_Normalize( pAbc->pGia, fBooth, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &anorm [-bvh]\n" );
    Abc_Print( -2, "\t         normalize adder trees in the current AIG\n" );
    Abc_Print( -2, "\t-b     : toggles working with Booth multipliers [default = %s]\n",  fBooth? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Decla( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp;
    int c, fBooth = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "bvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'b':
            fBooth ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Decla(): There is no AIG.\n" );
        return 0;
    }
    pTemp = Acec_ManDecla( pAbc->pGia, fBooth, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &decla [-bvh]\n" );
    Abc_Print( -2, "\t         removes carry look ahead adders\n" );
    Abc_Print( -2, "\t-b     : toggles working with Booth multipliers [default = %s]\n",  fBooth? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Esop( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Eso_ManCompute( Gia_Man_t * pGia, int fVerbose, Vec_Wec_t ** pvRes );
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Esop(): There is no AIG.\n" );
        return 0;
    }
    pTemp = Eso_ManCompute( pAbc->pGia, fVerbose, NULL );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &esop [-vh]\n" );
    Abc_Print( -2, "\t         derives Exclusive Sum of Products from AIG\n" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Exorcism( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Abc_ExorcismMain( Vec_Wec_t * vEsop, int nIns, int nOuts, char * pFileNameOut, int Quality, int Verbosity, int nCubesMax, int fUseQCost );
    extern Vec_Wec_t * Abc_ExorcismNtk2Esop( Abc_Ntk_t * pNtk );

    extern Gia_Man_t * Eso_ManCompute( Gia_Man_t * pGia, int fVerbose, Vec_Wec_t ** pvRes );
    Vec_Wec_t * vEsop = NULL;
    Abc_Ntk_t * pNtk = NULL;
    char * pFileNameIn = NULL;
    char * pFileNameOut = NULL;
    int c, Quality = 2, Verbosity = 0, nCubesMax = 20000, fUseQCost = 0, fVerbose = 0;
    int nInputs = -1, nOutputs = -1;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "QVCqvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by an integer.\n" );
                goto usage;
            }
            Quality = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Quality < 0 )
                goto usage;
            break;
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            Verbosity = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Verbosity < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCubesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCubesMax < 0 )
                goto usage;
            break;
        case 'q':
            fUseQCost ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }

    if ( argc == globalUtilOptind + 2 )
    {
        pFileNameIn = argv[globalUtilOptind];
        pFileNameOut = argv[globalUtilOptind + 1];
    }
    else if ( argc == globalUtilOptind + 1 )
    {
        pFileNameOut = argv[globalUtilOptind];
    }
    else
    {
        Abc_Print( -1, "Abc_CommandAbc9Exorcism(): Argument error.\n" );
        goto usage;
    }

    if ( pAbc->pGia == NULL && pFileNameIn == NULL )
    {
      Abc_Print( -1, "Abc_CommandAbc9Exorcism(): There is neither an AIG nor an ESOP-PLA file.\n" );
      return 0;
    }

    if ( pFileNameIn )
    {
        pNtk = Io_ReadPla( pFileNameIn, 0, 0, 0, /* no preprocessing = */1, /* check = */1 );
        if ( pNtk == NULL )
        {
            printf( "Reading PLA file has failed.\n" );
            return 1;
        }
        nInputs = Abc_NtkCiNum( pNtk );
        nOutputs = Abc_NtkCoNum( pNtk );
        vEsop = Abc_ExorcismNtk2Esop( pNtk );
        if ( vEsop == NULL )
        {
            printf( "Converting PLA to ESOP failed.\n" );
            return 1;
        }
    }
    else if ( pAbc->pGia )
    {
        // generate starting cover
        nInputs = Gia_ManCiNum( pAbc->pGia );
        nOutputs = Gia_ManCoNum( pAbc->pGia );
        Eso_ManCompute( pAbc->pGia, fVerbose, &vEsop );
    }

    if ( vEsop )
    {
        // run minimization
        Abc_ExorcismMain( vEsop, nInputs, nOutputs, pFileNameOut, Quality, Verbosity, nCubesMax, fUseQCost );
        Vec_WecFree( vEsop );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &exorcism [-Q N] [-V N] [-C N] -q [file_in] <file_out>\n" );
    Abc_Print( -2, "                     performs heuristic exclusive sum-of-project minimization\n" );
    Abc_Print( -2, "        -Q N       : minimization quality [default = %d]\n", Quality);
    Abc_Print( -2, "                     increasing this number improves quality and adds to runtime\n");
    Abc_Print( -2, "        -V N       : verbosity level [default = %d]\n", Verbosity);
    Abc_Print( -2, "                     0 = no output; 1 = outline; 2 = verbose\n");
    Abc_Print( -2, "        -C N       : maximum number of cubes in startign cover [default = %d]\n", nCubesMax );
    Abc_Print( -2, "        -q         : toggle using quantum cost [default = %s]\n", fUseQCost? "yes": "no" );
    Abc_Print( -2, "        [file_in]  : optional input file in ESOP-PLA format (otherwise current AIG is used)\n");
    Abc_Print( -2, "        <file_out> : output file in ESOP-PLA format\n");
    Abc_Print( -2, "\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Mfs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManPerformMfs( Gia_Man_t * p, Sfm_Par_t * pPars );
    Gia_Man_t * pTemp; int c;
    Sfm_Par_t Pars, * pPars = &Pars;
    Sfm_ParSetDefault( pPars );
    pPars->nTfoLevMax  =    5;
    pPars->nDepthMax   =  100;
    pPars->nWinSizeMax = 2000;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WFDMLCNdaeblvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTfoLevMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTfoLevMax < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFanoutMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFanoutMax < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nDepthMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nDepthMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWinSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWinSizeMax < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nGrowthLevel = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nGrowthLevel < 0 || pPars->nGrowthLevel > ABC_INFINITY )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nNodesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nNodesMax < 0 )
                goto usage;
            break;
        case 'd':
            pPars->fRrOnly ^= 1;
            break;
        case 'a':
            pPars->fArea ^= 1;
            break;
        case 'e':
            pPars->fMoreEffort ^= 1;
            break;
        case 'b':
            pPars->fAllBoxes ^= 1;
            break;
        case 'l':
            pPars->fUseDcs ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Mfs(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManBufNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Mfs(): This command does not work with barrier buffers.\n" );
        return 1;
    }
    if ( !Gia_ManHasMapping(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Mfs(): The current AIG has no mapping.\n" );
        return 0;
    }
    if ( Gia_ManLutSizeMax(pAbc->pGia) > 15 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Mfs(): The current mapping has nodes with more than 15 inputs. Cannot use \"mfs\".\n" );
        return 0;
    }
/*
    if ( pAbc->pGia->pAigExtra && Gia_ManPiNum(pAbc->pGia->pAigExtra) > 6 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Mfs(): The current white-boxes have more than 6 inputs. Cannot use \"mfs\".\n" );
        return 0;
    }
*/
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
        pTemp = Gia_ManPerformMfs( pAbc->pGia, pPars );
    else
    {
        int nRegs = Gia_ManRegNum(pAbc->pGia);
        pAbc->pGia->nRegs = 0;
        pTemp = Gia_ManPerformMfs( pAbc->pGia, pPars );
        Gia_ManSetRegNum( pAbc->pGia, nRegs );
        Gia_ManSetRegNum( pTemp, nRegs );
    }
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &mfs [-WFDMLCN <num>] [-daeblvwh]\n" );
    Abc_Print( -2, "\t           performs don't-care-based optimization of logic networks\n" );
    Abc_Print( -2, "\t-W <num> : the number of levels in the TFO cone (0 <= num) [default = %d]\n",             pPars->nTfoLevMax );
    Abc_Print( -2, "\t-F <num> : the max number of fanouts to skip (1 <= num) [default = %d]\n",                pPars->nFanoutMax );
    Abc_Print( -2, "\t-D <num> : the max depth nodes to try (0 = no limit) [default = %d]\n",                   pPars->nDepthMax );
    Abc_Print( -2, "\t-M <num> : the max node count of windows to consider (0 = no limit) [default = %d]\n",    pPars->nWinSizeMax );
    Abc_Print( -2, "\t-L <num> : the max increase in node level after resynthesis (0 <= num) [default = %d]\n", pPars->nGrowthLevel );
    Abc_Print( -2, "\t-C <num> : the max number of conflicts in one SAT run (0 = no limit) [default = %d]\n",   pPars->nBTLimit );
    Abc_Print( -2, "\t-N <num> : the max number of nodes to try (0 = all) [default = %d]\n",                    pPars->nNodesMax );
    Abc_Print( -2, "\t-d       : toggle performing redundancy removal [default = %s]\n",                        pPars->fRrOnly? "yes": "no" );
    Abc_Print( -2, "\t-a       : toggle minimizing area or area+edges [default = %s]\n",                        pPars->fArea? "area": "area+edges" );
    Abc_Print( -2, "\t-e       : toggle high-effort resubstitution [default = %s]\n",                           pPars->fMoreEffort? "yes": "no" );
    Abc_Print( -2, "\t-b       : toggle preserving all white boxes [default = %s]\n",                           pPars->fAllBoxes? "yes": "no" );
    Abc_Print( -2, "\t-l       : toggle deriving don't-cares [default = %s]\n",                                 pPars->fUseDcs? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n",                        pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing detailed stats for each node [default = %s]\n",                pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Mfsd( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Sbd_NtkPerform( Gia_Man_t * pGia, Sbd_Par_t * pPars );
    Gia_Man_t * pTemp; int c;
    Sbd_Par_t Pars, * pPars = &Pars;
    Sbd_ParSetDefault( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KSNPWFMCmcdpvwh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutSize < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLutNum < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nCutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutSize < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nCutNum < 0 )
                goto usage;
            break;
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTfoLevels = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTfoLevels < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTfoFanMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTfoFanMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nWinSizeMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nWinSizeMax < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nBTLimit < 0 )
                goto usage;
            break;
        case 'm':
            pPars->fMapping ^= 1;
            break;
        case 'c':
            pPars->fMoreCuts ^= 1;
            break;
        case 'd':
            pPars->fFindDivs ^= 1;
            break;
        case 'p':
            pPars->fUsePath ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Mfsd(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManBufNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Mfsd(): This command does not work with barrier buffers.\n" );
        return 1;
    }
    if ( Gia_ManHasMapping(pAbc->pGia) )
        Abc_Print( 1, "The current AIG has mapping, which can be used to determine critical path if \"-p\" is selected.\n" );
    pTemp = Sbd_NtkPerform( pAbc->pGia, pPars );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &mfsd [-KSNPWFMC <num>] [-mcdpvwh]\n" );
    Abc_Print( -2, "\t           performs SAT-based delay-oriented AIG optimization\n" );
    Abc_Print( -2, "\t-K <num> : the LUT size for delay minimization (2 <= num <= 6) [default = %d]\n",         pPars->nLutSize );
    Abc_Print( -2, "\t-S <num> : the LUT structure size (1 <= num <= 2) [default = %d]\n",                      pPars->nLutNum );
    Abc_Print( -2, "\t-N <num> : the cut size considered for optimization (2 <= num <= 10) [default = %d]\n",   pPars->nCutSize );
    Abc_Print( -2, "\t-P <num> : the number of cuts computed at a node (1 <= num <= 500) [default = %d]\n",     pPars->nCutNum );
    Abc_Print( -2, "\t-W <num> : the number of levels in the TFO cone (0 <= num) [default = %d]\n",             pPars->nTfoLevels );
    Abc_Print( -2, "\t-F <num> : the max number of fanouts to skip (1 <= num) [default = %d]\n",                pPars->nTfoFanMax );
    Abc_Print( -2, "\t-M <num> : the max node count of windows to consider (0 = no limit) [default = %d]\n",    pPars->nWinSizeMax );
    Abc_Print( -2, "\t-C <num> : the max number of conflicts in one SAT run (0 = no limit) [default = %d]\n",   pPars->nBTLimit );
    Abc_Print( -2, "\t-m       : toggle generating delay-oriented mapping [default = %s]\n",                    pPars->fMapping? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggle using several cuts at each node [default = %s]\n",                      pPars->fMoreCuts? "yes": "no" );
    Abc_Print( -2, "\t-d       : toggle additional search for good divisors [default = %s]\n",                  pPars->fFindDivs? "yes": "no" );
    Abc_Print( -2, "\t-p       : toggle optimizing critical path only [default = %s]\n",                        pPars->fUsePath? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n",                        pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w       : toggle printing detailed stats for each node [default = %s]\n",                pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9DeepSyn( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDeepSyn( Gia_Man_t * pGia, int nIters, int nNoImpr, int TimeOut, int nAnds, int Seed, int fUseTwo, int fChoices, int fVerbose );
    extern Gia_Man_t * Gia_ManDeepSyn2( Gia_Man_t * pGia, int nIters, int nNoImpr, int TimeOut, int nAnds, int Seed, int fUseTwo, int fChoices, int fVerbose );
    Gia_Man_t * pTemp; int c, nIters = 1, nNoImpr = ABC_INFINITY, TimeOut = 0, nAnds = 0, Seed = 0, fUseTwo = 0, fChoices = 0, fOpt = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IJTAStcovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'J':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-J\" should be followed by an integer.\n" );
                goto usage;
            }
            nNoImpr = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNoImpr < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeOut < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            nAnds = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nAnds < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 't':
            fUseTwo ^= 1;
            break;
        case 'c':
            fChoices ^= 1;
            break;
        case 'o':
            fOpt ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9DeepSyn(): There is no AIG.\n" );
        return 0;
    }
    if ( fOpt ) 
        pTemp = Gia_ManDeepSyn2( pAbc->pGia, nIters, nNoImpr, TimeOut, nAnds, Seed, fUseTwo, fChoices, fVerbose );
    else
        pTemp = Gia_ManDeepSyn( pAbc->pGia, nIters, nNoImpr, TimeOut, nAnds, Seed, fUseTwo, fChoices, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &deepsyn [-IJTAS <num>] [-tcovh]\n" );
    Abc_Print( -2, "\t           performs synthesis\n" );
    Abc_Print( -2, "\t-I <num> : the number of iterations [default = %d]\n",                   nIters  );
    Abc_Print( -2, "\t-J <num> : the number of steps without improvements [default = %d]\n",   nNoImpr  );
    Abc_Print( -2, "\t-T <num> : the timeout in seconds (0 = no timeout) [default = %d]\n",    TimeOut );
    Abc_Print( -2, "\t-A <num> : the number of nodes to stop (0 = no limit) [default = %d]\n", nAnds   );
    Abc_Print( -2, "\t-S <num> : user-specified random seed (0 <= num <= 100) [default = %d]\n", Seed  );
    Abc_Print( -2, "\t-t       : toggle using two-input LUTs [default = %s]\n",                fUseTwo? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggle computing structural choices [default = %s]\n",        fChoices? "yes": "no" );
    Abc_Print( -2, "\t-o       : toggle using optimization [default = %s]\n",                  fOpt? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n",       fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9RandSyn( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManRandSyn( Gia_Man_t * p, unsigned random_seed );
    Gia_Man_t * pTemp; int c, Seed = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Svh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9RandSyn(): There is no AIG.\n" );
        return 0;
    }
    if ( Seed == 0 ) {
        Seed = Abc_Random(0) % 10000;
        printf( "Using random seed: %09u\n", Seed );
    }
    pTemp = Gia_ManRandSyn( pAbc->pGia, Seed );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &randsyn [-S <num>] [-vh]\n" );
    Abc_Print( -2, "\t           generates a random variation of the current AIG\n" );
    Abc_Print( -2, "\t-S <num> : user-specified random seed (0 <= num <= 100) [default = %d]\n", Seed  );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9SatSyn( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManSyn( Gia_Man_t * p, int nNodes, int nOuts, int TimeOut, int fUseXor, int fFancy, int fVerbose );
    Gia_Man_t * pTemp; int c, nNodes = 0, nOuts = 0, TimeOut = 0, fUseXor = 0, fFancy = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NTafvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nNodes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNodes < 0 )
                goto usage;
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            nOuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nOuts < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeOut < 0 )
                goto usage;
            break;
        case 'a':
            fUseXor ^= 1;
            break;
        case 'f':
            fFancy ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9SatSyn(): There is no AIG.\n" );
        return 0;
    }
    pTemp = Gia_ManSyn( pAbc->pGia, nNodes, nOuts, TimeOut, fUseXor, fFancy, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &satsyn [-NOT <num>] [-afvh]\n" );
    Abc_Print( -2, "\t           performs synthesis\n" );
    Abc_Print( -2, "\t-N <num> : the number of window nodes [default = %d]\n",                 nNodes  );
    Abc_Print( -2, "\t-O <num> : the number of window outputs [default = %d]\n",               nOuts  );
    Abc_Print( -2, "\t-T <num> : the timeout in seconds (0 = no timeout) [default = %d]\n",    TimeOut );
    Abc_Print( -2, "\t-a       : toggle using xor-nodes [default = %s]\n",                     fUseXor? "yes": "no" );
    Abc_Print( -2, "\t-f       : toggle using additional feature [default = %s]\n",            fFancy? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n",       fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9StochSyn( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManStochSyn( int nSuppMax, int nMaxSize, int nIters, int TimeOut, int Seed, int fVerbose, char * pScript, int nProcs, int fDelayOpt, int fChoices );
    int c, nSuppMax = 0, nMaxSize = 1000, nIters = 10, TimeOut = 0, Seed = 0, nProcs = 1, fDelayOpt = 0, fChoices = 0, fVerbose = 0; char * pScript;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NMITSPdcvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nSuppMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nSuppMax < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nMaxSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMaxSize < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            TimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( TimeOut < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nProcs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nProcs < 0 )
                goto usage;
            break;            
        case 'd':
            fDelayOpt ^= 1;
            break;
        case 'c':
            fChoices ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9StochSyn(): There is no AIG.\n" );
        return 0;
    }
    if ( argc != globalUtilOptind + 1 )
    {
        printf( "Expecting a synthesis script in quotes on the command line (for example: \"&st; &dch; &if\").\n" );
        goto usage;
    }
    if ( fChoices && nIters < 2 )
    {
        printf( "The number of iterations should be more than 1.\n" );
        goto usage;
    }    
    pScript = Abc_UtilStrsav( argv[globalUtilOptind] );
    Gia_ManStochSyn( nSuppMax, nMaxSize, nIters, TimeOut, Seed, fVerbose, pScript, nProcs, fDelayOpt, fChoices );
    ABC_FREE( pScript );
    return 0;

usage:
    Abc_Print( -2, "usage: &stochsyn [-NMITSP <num>] [-dcvh] <script>\n" );
    Abc_Print( -2, "\t           performs stochastic synthesis using the given script\n" );
    Abc_Print( -2, "\t-N <num> : the max partition support size [default = %d]\n", nSuppMax );
    Abc_Print( -2, "\t-M <num> : the max partition size (in AIG nodes or LUTs) [default = %d]\n", nMaxSize );
    Abc_Print( -2, "\t-I <num> : the number of iterations [default = %d]\n",                   nIters  );
    Abc_Print( -2, "\t-T <num> : the timeout in seconds (0 = no timeout) [default = %d]\n",    TimeOut );
    Abc_Print( -2, "\t-S <num> : user-specified random seed (0 <= num <= 100) [default = %d]\n", Seed  );
    Abc_Print( -2, "\t-P <num> : the number of concurrent processes (1 <= num <= 100) [default = %d]\n", nProcs );
    Abc_Print( -2, "\t-d       : toggle using delay-aware synthesis (if the script supports it) [default = %s]\n", fDelayOpt? "yes": "no" );
    Abc_Print( -2, "\t-c       : toggle computing structural choices [default = %s]\n",        fChoices? "yes": "no" );
    Abc_Print( -2, "\t-v       : toggle printing optimization summary [default = %s]\n",       fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t<script> : synthesis script to use for each partition\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9CexCut( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    return -1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9CexMerge( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abc_Cex_t * pCexNew;
    int c;
    int iFrStart = 0;
    int iFrStop  = ABC_INFINITY;
    int fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FGvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            iFrStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iFrStart < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            iFrStop = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iFrStop < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            Abc_Print( -2, "Unknown switch.\n");
            goto usage;
        }
    }

    if ( pAbc->pCex == NULL )
    {
        Abc_Print( 1, "There is no current cex.\n");
        return 0;
    }
    if ( pAbc->pCex2 == NULL )
    {
        Abc_Print( 1, "There is no saved cex.\n");
        return 0;
    }
    if ( iFrStop - iFrStart < pAbc->pCex->iFrame )
    {
        Abc_Print( 1, "Current CEX does not allow to shorten the saved CEX.\n");
        return 0;
    }
    pCexNew = Abc_CexMerge( pAbc->pCex2, pAbc->pCex, iFrStart, iFrStop );
    if ( pCexNew == NULL )
    {
        Abc_Print( 1, "Merging CEXes has failed.\n");
        return 0;
    }
    // replace the saved CEX
    ABC_FREE( pAbc->pCex2 );
    pAbc->pCex2 = pCexNew;
    return 0;

usage:
    Abc_Print( -2, "usage: &cexmerge [-FG num] [-vh]\n" );
    Abc_Print( -2, "\t         merges the current CEX into the saved one\n" );
    Abc_Print( -2, "\t         and sets the resulting CEX as the saved one\n" );
    Abc_Print( -2, "\t-F num : 0-based number of the starting frame [default = %d]\n", iFrStart );
    Abc_Print( -2, "\t-G num : 0-based number of the ending frame [default = %d]\n",   iFrStop );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9CexMin( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Abc_Cex_t * Gia_ManCexMin( Gia_Man_t * p, Abc_Cex_t * pCex, int iFrameStart, int nRealPis, int fJustMax, int fUseAll, int fVerbose );
    Abc_Cex_t * pCexNew;
    int iFrameStart = 0;
    int nRealPis = -1;
    int fJustMax = 1;
    int fUseAll = 0;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FNjavh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            iFrameStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iFrameStart < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nRealPis = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRealPis < 0 )
                goto usage;
            break;
        case 'j':
            fJustMax ^= 1;
            break;
        case 'a':
            fUseAll ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9CexMin(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9CexMin(): The network is combinational.\n" );
        return 0;
    }
    if ( pAbc->pCex == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9CexMin(): There is no counter-example.\n" );
        return 1;
    }
    pCexNew = Gia_ManCexMin( pAbc->pGia, pAbc->pCex, iFrameStart, nRealPis, fJustMax, fUseAll, fVerbose );
    if ( pCexNew )
        Abc_FrameReplaceCex( pAbc, &pCexNew );
    return 0;

usage:
    Abc_Print( -2, "usage: &cexmin [-FN num] [-javh]\n" );
    Abc_Print( -2, "\t         minimizes a deep counter-example\n" );
    Abc_Print( -2, "\t-F num : starting timeframe for minimization [default = %d]\n", iFrameStart );
    Abc_Print( -2, "\t-N num : the number of real primary inputs [default = %d]\n", nRealPis );
    Abc_Print( -2, "\t-j     : toggle computing all justifying assignments [default = %s]\n", fJustMax? "yes": "no" );
    Abc_Print( -2, "\t-a     : toggle using all terminal objects [default = %s]\n", fUseAll? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9AbsCreate( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    //Gia_Man_t * pTemp = NULL;
    char * pStr, * pFlopNum;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9AbsCreate(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( pAbc->pGia->vFlopClasses != NULL )
    {
        Abc_Print( -1, "Abstraction flop map is already defined.\n" );
        return 0;
    }
    pAbc->pGia->vFlopClasses = Vec_IntStart( Gia_ManRegNum(pAbc->pGia) );
    // read the flop list
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Flop list should be specified on the command line.\n" );
        return 0;
    }
    pStr = argv[globalUtilOptind];
    // parse flop list
    pFlopNum = strtok( pStr, " ," );
    while ( pFlopNum )
    {
        int iFlop = atoi(pFlopNum);
        assert( iFlop >= 0 && iFlop < Gia_ManRegNum(pAbc->pGia) );
        Vec_IntWriteEntry( pAbc->pGia->vFlopClasses, iFlop, 1 );
        pFlopNum = strtok( NULL, " ," );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &abs_create [-vh] <comma-separated_list_of_zero-based_flop_ids>\n" );
    Abc_Print( -2, "\t        creates new flop map by reading user's input\n" );
    Abc_Print( -2, "\t-v    : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9AbsDerive( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp = NULL;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9AbsDerive(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( pAbc->pGia->vFlopClasses == NULL )
    {
        Abc_Print( -1, "Abstraction flop map is missing.\n" );
        return 0;
    }
    pTemp = Gia_ManDupAbsFlops( pAbc->pGia, pAbc->pGia->vFlopClasses );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &abs_derive [-vh]\n" );
    Abc_Print( -2, "\t        derives abstracted model using the pre-computed flop map\n" );
    Abc_Print( -2, "\t-v    : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9AbsRefine( Abc_Frame_t * pAbc, int argc, char ** argv )
{
//    Gia_Man_t * pTemp = NULL;
    int c;
    int nFfToAddMax = 0;
    int fTryFour    = 1;
    int fSensePath  = 0;
    int fVerbose    = 0;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Mtsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nFfToAddMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFfToAddMax < 0 )
                goto usage;
            break;
        case 't':
            fTryFour ^= 1;
            break;
        case 's':
            fSensePath ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9AbsRefine(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( pAbc->pCex == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9AbsRefine(): There is no counter-example.\n" );
        return 1;
    }
    pAbc->Status = Gia_ManCexAbstractionRefine( pAbc->pGia, pAbc->pCex, nFfToAddMax, fTryFour, fSensePath, fVerbose );
    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    return 0;

usage:
    Abc_Print( -2, "usage: &abs_refine [-M <num>] [-tsvh]\n" );
    Abc_Print( -2, "\t         refines the pre-computed flop map using the counter-example\n" );
    Abc_Print( -2, "\t-M num : the max number of flops to add (0 = not used) [default = %d]\n", nFfToAddMax );
    Abc_Print( -2, "\t-t     : toggle trying four abstractions instead of one [default = %s]\n", fTryFour? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle using the path sensitization algorithm [default = %s]\n", fSensePath? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GlaDerive( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Gia_Man_t * pTemp = NULL;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GlaDerive(): There is no AIG.\n" );
        return 1;
    }
/*
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
*/
    if ( pAbc->fBatchMode && (pAbc->Status == 0 || pAbc->Status == 1) ) 
    { 
        Abc_Print( 1, "The miters is already solved; skipping the command.\n" ); 
        return 0;
    }
    if ( pAbc->pGia->vGateClasses == NULL )
    {
        Abc_Print( -1, "Abstraction gate map is missing.\n" );
        return 0;
    }
    pTemp = Gia_ManDupAbsGates( pAbc->pGia, pAbc->pGia->vGateClasses );
    Gia_ManStop( pTemp );
    pTemp = Gia_ManDupAbsGates( pAbc->pGia, pAbc->pGia->vGateClasses );
    Abc_FrameUpdateGia( pAbc, pTemp );
//    Abc_Print( 1,"This command is currently not enabled.\n" );
    return 0;

usage:
    Abc_Print( -2, "usage: &gla_derive [-vh]\n" );
    Abc_Print( -2, "\t        derives abstracted model using the pre-computed gate map\n" );
    Abc_Print( -2, "\t-v    : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GlaRefine( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Gia_ManNewRefine( Gia_Man_t * p, Abc_Cex_t * pCex, int iFrameStart, int iFrameExtra, int fVerbose );
    int iFrameStart = 0;
    int iFrameExtra = 0;
    int fMinCut = 1;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FGmvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            iFrameStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iFrameStart < 0 )
                goto usage;
            break;
        case 'G':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
                goto usage;
            }
            iFrameExtra = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iFrameExtra < 0 )
                goto usage;
            break;
        case 'm':
            fMinCut ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GlaRefine(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( pAbc->pCex == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GlaRefine(): There is no counter-example.\n" );
        return 1;
    }
    pAbc->Status = Gia_ManNewRefine( pAbc->pGia, pAbc->pCex, iFrameStart, iFrameExtra, fVerbose );
    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    return 0;

usage:
    Abc_Print( -2, "usage: &gla_refine [-FG num] [-vh]\n" );
    Abc_Print( -2, "\t         refines the pre-computed gate map using the counter-example\n" );
    Abc_Print( -2, "\t-F num : starting timeframe for suffix refinement [default = %d]\n", iFrameStart );
    Abc_Print( -2, "\t-G num : the number of additional timeframes to try [default = %d]\n", iFrameExtra );
//    Abc_Print( -2, "\t-m     : toggle using min-cut to derive the refinements [default = %s]\n", fMinCut? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GlaShrink( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int fUsePdr = 0;
    int fUseSat = 1;
    int fUseBdd = 0;
    int nFrameMax = 0;
    int nTimeOut = 0;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FTpsbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrameMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrameMax < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nTimeOut < 0 )
                goto usage;
            break;
        case 'p':
            fUsePdr ^= 1;
            break;
        case 's':
            fUseSat ^= 1;
            break;
        case 'b':
            fUseBdd ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GlaShrink(): There is no AIG.\n" );
        return 1;
    }
    if ( pAbc->pGia->vGateClasses == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GlaShrink(): There is no gate-level abstraction.\n" );
        return 0;
    }
    Gia_ManShrinkGla( pAbc->pGia, nFrameMax, nTimeOut, fUsePdr, fUseSat, fUseBdd, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &gla_shrink [-FT num] [-psbvh]\n" );
    Abc_Print( -2, "\t         shrinks the abstraction by removing redundant objects\n" );
    Abc_Print( -2, "\t-F num : the maximum timeframe to check to [default = %d]\n", nFrameMax );
    Abc_Print( -2, "\t-T num : the timeout per call, in seconds [default = %d]\n", nTimeOut );
    Abc_Print( -2, "\t-p     : toggle using PDR for checking [default = %s]\n", fUsePdr? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggle using BMC for checking [default = %s]\n", fUseSat? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggle using BDDs for checking [default = %s]\n", fUseBdd? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Gla( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abs_Par_t Pars, * pPars = &Pars;
    int c, fNewAlgo = 1;
    char * pLogFileName = NULL;
    Abs_ParSetDefaults( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FSCMDETRQPBALtfardmnscbpquwvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesMax < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesStart < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nConfLimit < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLearnedStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLearnedStart < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLearnedDelta = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLearnedDelta < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLearnedPerce = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLearnedPerce < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOut < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRatioMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRatioMin < 0 )
                goto usage;
            break;
        case 'Q':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-Q\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRatioMin2 = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRatioMin2 < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRatioMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRatioMax < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesNoChangeLim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesNoChangeLim < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a file name.\n" );
                goto usage;
            }
            pPars->pFileVabs = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by a file name.\n" );
                goto usage;
            }
            pLogFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 't':
            pPars->fUseTermVars ^= 1;
            break;
        case 'f':
            pPars->fPropFanout ^= 1;
            break;
        case 'a':
            pPars->fAddLayer ^= 1;
            break;
        case 'r':
            pPars->fNewRefine ^= 1;
            break;
        case 'd':
            pPars->fDumpVabs ^= 1;
            break;
        case 'm':
            pPars->fDumpMabs ^= 1;
            break;
        case 'n':
            fNewAlgo ^= 1;
            break;
        case 's':
            pPars->fUseSkip ^= 1;
            break;
        case 'c':
            pPars->fUseSimple ^= 1;
            break;
        case 'b':
            pPars->fSkipHash ^= 1;
            break;
        case 'p':
            pPars->fUseFullProof ^= 1;
            break;
        case 'q':
            pPars->fCallProver ^= 1;
            break;
        case 'u':
            pPars->fSimpProver ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'w':
            pPars->fVeryVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "There is no AIG.\n" );
        return 0;
    }
/*
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
*/
    if ( pPars->nFramesMax < 0 )
    {
        Abc_Print( 1, "The number of starting frames should be a positive integer.\n" );
        return 0;
    }
    if ( pPars->nFramesMax && pPars->nFramesStart > pPars->nFramesMax )
    {
        Abc_Print( 1, "The starting frame is larger than the max number of frames.\n" );
        return 0;
    }
    if ( Gia_ManPoNum(pAbc->pGia) == 1 )
    {
        if ( fNewAlgo )
            pAbc->Status = Gia_ManPerformGla( pAbc->pGia, pPars );
        else
            pAbc->Status  = Gia_ManPerformGlaOld( pAbc->pGia, pPars, 0 );
        pAbc->nFrames = pPars->iFrame;
        Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
        if ( pLogFileName )
            Abc_NtkWriteLogFile( pLogFileName, pAbc->pCex, pAbc->Status, pAbc->nFrames, "&gla" );
    }
    else // iterate over outputs
    {
        Gia_Obj_t * pObj; int o, Status;
        Vec_Ptr_t * vSeqModelVec = Vec_PtrStart( Gia_ManPoNum(pAbc->pGia) );
        Vec_Int_t * vStatuses = Vec_IntAlloc( Gia_ManPoNum(pAbc->pGia) );
        Gia_ManForEachPo( pAbc->pGia, pObj, o )
        {
            Gia_Man_t * pOne = Gia_ManDupDfsOnePo( pAbc->pGia, o );
            if ( fNewAlgo )
                Status = Gia_ManPerformGla( pOne, pPars );
            else
                Status = Gia_ManPerformGlaOld( pOne, pPars, 0 );
            Vec_IntPush( vStatuses, Status );
            if ( pLogFileName )
                Abc_NtkWriteLogFile( pLogFileName, pOne->pCexSeq, Status, pPars->iFrame, "&gla" );
            if ( pOne->pCexSeq )
                Vec_PtrWriteEntry( vSeqModelVec, o, pOne->pCexSeq );
            pOne->pCexSeq = NULL;
            Gia_ManStop( pOne );
        }
        assert( Vec_IntSize(vStatuses) == Gia_ManPoNum(pAbc->pGia) );
        Abc_FrameReplaceCexVec( pAbc, &vSeqModelVec );
        Abc_FrameReplacePoStatuses( pAbc, &vStatuses );
        pAbc->nFrames = -1;
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &gla [-FSCMDETRQPB num] [-AL file] [-fardmnscbpquwvh]\n" );
    Abc_Print( -2, "\t          fixed-time-frame gate-level proof- and cex-based abstraction\n" );
    Abc_Print( -2, "\t-F num  : the max number of timeframes to unroll [default = %d]\n", pPars->nFramesMax );
    Abc_Print( -2, "\t-S num  : the starting time frame (0=unused) [default = %d]\n", pPars->nFramesStart );
    Abc_Print( -2, "\t-C num  : the max number of SAT solver conflicts (0=unused) [default = %d]\n", pPars->nConfLimit );
    Abc_Print( -2, "\t-M num  : the max number of learned clauses to keep (0=unused) [default = %d]\n", pPars->nLearnedStart );
    Abc_Print( -2, "\t-D num  : delta value for learned clause removal [default = %d]\n", pPars->nLearnedDelta );
    Abc_Print( -2, "\t-E num  : ratio percentage for learned clause removal [default = %d]\n", pPars->nLearnedPerce );
    Abc_Print( -2, "\t-T num  : an approximate timeout, in seconds [default = %d]\n", pPars->nTimeOut );
    Abc_Print( -2, "\t-R num  : stop when abstraction size exceeds num %% (0<=num<=100) [default = %d]\n", pPars->nRatioMin );
    Abc_Print( -2, "\t-Q num  : stop when abstraction size exceeds num %% during refinement (0<=num<=100) [default = %d]\n", pPars->nRatioMin2 );
    Abc_Print( -2, "\t-P num  : maximum percentage of added objects before a restart (0<=num<=100) [default = %d]\n", pPars->nRatioMax );
    Abc_Print( -2, "\t-B num  : the number of stable frames to call prover or dump abstraction [default = %d]\n", pPars->nFramesNoChangeLim );
    Abc_Print( -2, "\t-A file : file name for dumping abstrated model (&gla -d) or abstraction map (&gla -m)\n" );
    Abc_Print( -2, "\t-L file : the log file name [default = %s]\n", pLogFileName ? pLogFileName : "no logging" );
    Abc_Print( -2, "\t-f      : toggle propagating fanout implications [default = %s]\n", pPars->fPropFanout? "yes": "no" );
    Abc_Print( -2, "\t-a      : toggle refinement by adding one layers of gates [default = %s]\n", pPars->fAddLayer? "yes": "no" );
    Abc_Print( -2, "\t-r      : toggle using improved refinement heuristics [default = %s]\n", pPars->fNewRefine? "yes": "no" );
    Abc_Print( -2, "\t-d      : toggle dumping abstracted model into a file [default = %s]\n", pPars->fDumpVabs? "yes": "no" );
    Abc_Print( -2, "\t-m      : toggle dumping abstraction map into a file [default = %s]\n", pPars->fDumpMabs? "yes": "no" );
    Abc_Print( -2, "\t-n      : toggle using new algorithms [default = %s]\n", fNewAlgo? "yes": "no" );
    Abc_Print( -2, "\t-s      : toggle skipping previously proved timeframes [default = %s]\n", pPars->fUseSkip? "yes": "no" );
    Abc_Print( -2, "\t-c      : toggle using naive (2-input AND node) CNF encoding [default = %s]\n", pPars->fUseSimple? "yes": "no" );
    Abc_Print( -2, "\t-b      : toggle CNF construction without hashing [default = %s]\n", pPars->fSkipHash? "yes": "no" );
    Abc_Print( -2, "\t-p      : toggle using full-proof for UNSAT cores [default = %s]\n", pPars->fUseFullProof? "yes": "no" );
    Abc_Print( -2, "\t-q      : toggle calling the prover [default = %s]\n", pPars->fCallProver? "yes": "no" );
    Abc_Print( -2, "\t-u      : toggle enabling simplifation before calling the prover [default = %s]\n", pPars->fSimpProver? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-w      : toggle printing more verbose information [default = %s]\n", pPars->fVeryVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Vta( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    Abs_Par_t Pars, * pPars = &Pars;
    int c;
    Abs_ParSetDefaults( pPars );
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "FSPCLDETRAtradvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesMax < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesStart < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nFramesPast = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nFramesPast < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nConfLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nConfLimit < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLearnedStart = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLearnedStart < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLearnedDelta = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLearnedDelta < 0 )
                goto usage;
            break;
        case 'E':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-E\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nLearnedPerce = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nLearnedPerce < 0 )
                goto usage;
            break;
        case 'T':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nTimeOut = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nTimeOut < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            pPars->nRatioMin = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pPars->nRatioMin < 0 )
                goto usage;
            break;
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by a file name.\n" );
                goto usage;
            }
            pPars->pFileVabs = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 't':
            pPars->fUseTermVars ^= 1;
            break;
        case 'r':
            pPars->fUseRollback ^= 1;
            break;
        case 'a':
            pPars->fAddLayer ^= 1;
            break;
        case 'd':
            pPars->fDumpVabs ^= 1;
            break;
        case 'v':
            pPars->fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        Abc_Print( -1, "The network is combinational.\n" );
        return 0;
    }
    if ( Gia_ManPoNum(pAbc->pGia) > 1 )
    {
        Abc_Print( 1, "The network is more than one PO (run \"orpos\").\n" );
        return 0;
    }
    if ( pPars->nFramesMax < 0 )
    {
        Abc_Print( 1, "The number of starting frames should be a positive integer.\n" );
        return 0;
    }
    if ( pPars->nFramesMax && pPars->nFramesStart > pPars->nFramesMax )
    {
        Abc_Print( 1, "The starting frame is larger than the max number of frames.\n" );
        return 0;
    }
    pAbc->Status  = Gia_VtaPerform( pAbc->pGia, pPars );
    pAbc->nFrames = pPars->iFrame;
    Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexSeq );
    return 0;

usage:
    Abc_Print( -2, "usage: &vta [-FSPCLDETR num] [-A file] [-tradvh]\n" );
    Abc_Print( -2, "\t          variable-time-frame gate-level proof- and cex-based abstraction\n" );
    Abc_Print( -2, "\t-F num  : the max number of timeframes to unroll [default = %d]\n", pPars->nFramesMax );
    Abc_Print( -2, "\t-S num  : the starting time frame (0=unused) [default = %d]\n", pPars->nFramesStart );
    Abc_Print( -2, "\t-P num  : the number of previous frames for UNSAT core [default = %d]\n", pPars->nFramesPast );
    Abc_Print( -2, "\t-C num  : the max number of SAT solver conflicts (0=unused) [default = %d]\n", pPars->nConfLimit );
    Abc_Print( -2, "\t-L num  : the max number of learned clauses to keep (0=unused) [default = %d]\n", pPars->nLearnedStart );
    Abc_Print( -2, "\t-D num  : delta value for learned clause removal [default = %d]\n", pPars->nLearnedDelta );
    Abc_Print( -2, "\t-E num  : ratio percentage for learned clause removal [default = %d]\n", pPars->nLearnedPerce );
    Abc_Print( -2, "\t-T num  : an approximate timeout, in seconds [default = %d]\n", pPars->nTimeOut );
    Abc_Print( -2, "\t-R num  : minimum percentage of abstracted objects (0<=num<=100) [default = %d]\n", pPars->nRatioMin );
    Abc_Print( -2, "\t-A file : file name for dumping abstrated model [default = \"vabs.aig\"]\n" );
    Abc_Print( -2, "\t-t      : toggle using terminal variables [default = %s]\n", pPars->fUseTermVars? "yes": "no" );
    Abc_Print( -2, "\t-r      : toggle using rollback after the starting frames [default = %s]\n", pPars->fUseRollback? "yes": "no" );
    Abc_Print( -2, "\t-a      : toggle refinement by adding one layers of gates [default = %s]\n", pPars->fAddLayer? "yes": "no" );
    Abc_Print( -2, "\t-d      : toggle dumping abstracted model into a file [default = %s]\n", pPars->fDumpVabs? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n", pPars->fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Vta2Gla( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Vta2Gla(): There is no AIG.\n" );
        return 0;
    }
    if ( pAbc->pGia->vObjClasses == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Vta2Gla(): There is no variable-time-frame abstraction is defined.\n" );
        return 0;
    }
    Vec_IntFreeP( &pAbc->pGia->vGateClasses );
    pAbc->pGia->vGateClasses = Gia_VtaConvertToGla( pAbc->pGia, pAbc->pGia->vObjClasses );
    Vec_IntFreeP( &pAbc->pGia->vObjClasses );
    return 0;

usage:
    Abc_Print( -2, "usage: &vta_gla [-vh]\n" );
    Abc_Print( -2, "\t        maps variable- into fixed-time-frame gate-level abstraction\n" );
    Abc_Print( -2, "\t-v    : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Gla2Vta( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fVerbose = 0;
    int nFrames = pAbc->nFrames;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Gla2Vta(): There is no AIG.\n" );
        return 0;
    }
    if ( pAbc->pGia->vGateClasses == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Gla2Vta(): There is no gate-level abstraction is defined.\n" );
        return 0;
    }
    if ( pAbc->nFrames < 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Gla2Vta(): The number of timeframes (%d) should be a positive integer.\n", nFrames );
        return 0;
    }
    Vec_IntFreeP( &pAbc->pGia->vObjClasses );
    pAbc->pGia->vObjClasses = Gia_VtaConvertFromGla( pAbc->pGia, pAbc->pGia->vGateClasses, nFrames );
    Vec_IntFreeP( &pAbc->pGia->vGateClasses );
    return 0;

usage:
    Abc_Print( -2, "usage: &gla_vta [-F num] [-vh]\n" );
    Abc_Print( -2, "\t          maps fixed- into variable-time-frame gate-level abstraction\n" );
    Abc_Print( -2, "\t-F num  : timeframes in the resulting variable-time-frame abstraction [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Fla2Gla( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Fla2Gla(): There is no AIG.\n" );
        return 0;
    }
    if ( pAbc->pGia->vFlopClasses == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Fla2Gla(): There is no gate-level abstraction is defined.\n" );
        return 0;
    }
    Vec_IntFreeP( &pAbc->pGia->vGateClasses );
    pAbc->pGia->vGateClasses = Gia_FlaConvertToGla( pAbc->pGia, pAbc->pGia->vFlopClasses );
    Vec_IntFreeP( &pAbc->pGia->vFlopClasses );
    return 0;

usage:
    Abc_Print( -2, "usage: &fla_gla [-vh]\n" );
    Abc_Print( -2, "\t          maps flop-level into gate-level abstraction\n" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Gla2Fla( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Gla2Fla(): There is no AIG.\n" );
        return 0;
    }
    if ( pAbc->pGia->vGateClasses == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Gla2Fla(): There is no gate-level abstraction is defined.\n" );
        return 0;
    }
    Vec_IntFreeP( &pAbc->pGia->vFlopClasses );
    pAbc->pGia->vFlopClasses = Gia_GlaConvertToFla( pAbc->pGia, pAbc->pGia->vGateClasses );
    Vec_IntFreeP( &pAbc->pGia->vGateClasses );
    return 0;

usage:
    Abc_Print( -2, "usage: &gla_fla [-vh]\n" );
    Abc_Print( -2, "\t          maps gate-level into flop-level abstraction\n" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Gen( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Extra_CommandGen( int Algo, int LutSize, int nLuts, int nLevels, int Limit, int nBestTries, int Multi, int fXor, int fVerbose );
    Gia_Man_t * pTemp = NULL;
    int Algo        =   0;
    int LutSize     =   6;
    int nLuts       = 256;
    int nLevels     =   8;
    int Limit       =   0;
    int nBestTries  =   1;
    int Multi       =   0;
    int fXor        =   1;
    int c, fVerbose =   0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "AKNDLBMxvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            Algo = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Algo < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            LutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( LutSize < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nLuts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLuts < 0 )
                goto usage;
            break;
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
                goto usage;
            }
            nLevels = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevels < 0 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            Limit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Limit < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            nBestTries = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBestTries < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            Multi = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Multi < 0 )
                goto usage;
            break;
        case 'x':
            fXor ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pTemp = Extra_CommandGen( Algo, LutSize, nLuts, nLevels, Limit, nBestTries, Multi, fXor, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &gen [-AKNDLBMxvh]\n" );
    Abc_Print( -2, "\t          generates network\n" );
    Abc_Print( -2, "\t-A num  : the generation algorithm [default = %d]\n",                 Algo );
    Abc_Print( -2, "\t-K num  : the number of LUT inputs [default = %d]\n",                 LutSize );
    Abc_Print( -2, "\t-N num  : the number of LUTs on one level [default = %d]\n",          nLuts );
    Abc_Print( -2, "\t-D num  : the number of LUT levels [default = %d]\n",                 nLevels );
    Abc_Print( -2, "\t-L num  : limit below which we randomize [default = %d]\n",           Limit );
    Abc_Print( -2, "\t-B num  : select best fanins among this many tries [default = %d]\n", nBestTries );
    Abc_Print( -2, "\t-M num  : the multiplier type (1=array, 2=booth) [default = %d]\n",   Multi );
    Abc_Print( -2, "\t-x      : toggle using XOR gates [default = %s]\n",                   fXor? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n",      fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Cfs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Extra_CommandCfs( Gia_Man_t * pGia, int Limit, int Reps, int UnseenUse, int RareUse, int fReplaceRare, int fConstSim, int fDagNodes, float FlipProb, int fVerbose );
    int Limit       =   0;
    int Reps        =   1;
    int UnseenUse   =   2;
    int RareUse     =   2;
    int fReplaceRare=   0;
    int fConstSim   =   0;
    int fDagNodes   =   0;
    float FlipProb  =   0;
    int c, fVerbose =   0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "LNURPrcdvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            Limit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Limit < 0 )
                goto usage;
            break;
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            Reps = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Reps < 0 )
                goto usage;
            break;
        case 'U':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-U\" should be followed by an integer.\n" );
                goto usage;
            }
            UnseenUse = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( UnseenUse < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            RareUse = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( RareUse < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            FlipProb = atof(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( FlipProb < 0 )
                goto usage;
            break;
        case 'r':
            fReplaceRare ^= 1;
            break;
        case 'c':
            fConstSim ^= 1;
            break;
        case 'd':
            fDagNodes ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Cfs(): There is no AIG.\n" );
        return 1;
    }
    Extra_CommandCfs( pAbc->pGia, Limit, Reps, UnseenUse, RareUse, fReplaceRare, fConstSim, fDagNodes, FlipProb, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &cfs [-LNURPrcdvh]\n" );
    Abc_Print( -2, "\t          performs simulation\n" );
    Abc_Print( -2, "\t-L num  : the limit on the number of occurrences [default = %d]\n",  Limit );
    Abc_Print( -2, "\t-N num  : the number of repetions of each pattern [default = %d]\n", Reps );
    Abc_Print( -2, "\t-U num  : what to do with unseen patterns [default = %d]\n",         UnseenUse );
    Abc_Print( -2, "\t-R num  : what to do with rare patterns [default = %d]\n",           RareUse );
    Abc_Print( -2, "\t-P num  : base2-log of ramdom flip probability [default = %f]\n",    FlipProb );
    Abc_Print( -2, "\t-r      : toggle replacing rare patterns [default = %s]\n",          fReplaceRare? "yes": "no" );
    Abc_Print( -2, "\t-c      : toggle inserting constants [default = %s]\n",              fConstSim? "yes": "no" );
    Abc_Print( -2, "\t-d      : toggle using only DAG nodes [default = %s]\n",             fDagNodes? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n",     fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9ProdAdd( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    int nArgA       =   4;
    int nArgB       =   4;
    int Seed        =   0;
    int fSigned     =   0;
    int fCla        =   0;
    int c, fVerbose =   0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "ABSscvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'A':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-A\" should be followed by an integer.\n" );
                goto usage;
            }
            nArgA = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nArgA < 0 )
                goto usage;
            break;
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            nArgB = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nArgB < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 's':
            fSigned ^= 1;
            break;
        case 'c':
            fCla ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    Gia_ManProdAdderGen( nArgA, nArgB, Seed, fSigned, fCla );
    return 0;

usage:
    Abc_Print( -2, "usage: &prodadd [-ABSscvh]\n" );
    Abc_Print( -2, "\t          generates partial products and adder trees\n" );
    Abc_Print( -2, "\t-A num  : the bit-width of the first arg [default = %d]\n",           nArgA );
    Abc_Print( -2, "\t-B num  : the bit-width of the second arg [default = %d]\n",          nArgB );
    Abc_Print( -2, "\t-S num  : random seed used the node ordering [default = %d]\n",       Seed );
    Abc_Print( -2, "\t-s      : toggle using signed operation [default = %s]\n",            fSigned? "yes": "no" );
    Abc_Print( -2, "\t-c      : toggle using CLA in the adder tree [default = %s]\n",       fCla? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information [default = %s]\n",      fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9AddFlop( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupAddFlop( Gia_Man_t * p );
    Gia_Man_t * pTemp;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9AddFlop(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 ) 
    {
        pTemp = Gia_ManDupAddFlop( pAbc->pGia );
        Abc_FrameUpdateGia( pAbc, pTemp );
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &addflop [-vh]\n" );
    Abc_Print( -2, "\t         if the design has no flops, adds one flop to the design\n" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Init1( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManFlipInit1( Gia_Man_t * p, Vec_Int_t * vInit );
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL ) {
        Abc_Print( -1, "Abc_CommandAbc9Init1(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )  {
        Abc_Print( -1, "Abc_CommandAbc9Init1(): There is no flops.\n" );
        return 0;
    }
    if ( pAbc->pGia->vRegInits == NULL ) {
        Abc_Print( -1, "Abc_CommandAbc9Init1(): Flop init states are not available.\n" );
        return 0;
    }
    Gia_ManFlipInit1( pAbc->pGia, pAbc->pGia->vRegInits );
    return 0;

usage:
    Abc_Print( -2, "usage: &init1 [-vh]\n" );
    Abc_Print( -2, "\t         complements the inputs/outputs of flops with const-1 initial state\n" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9BMiter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManBoundaryMiter( Gia_Man_t * p1, Gia_Man_t * p2, int fVerbose );
    Gia_Man_t * pTemp, * pSecond;
    char * FileName = NULL;
    FILE * pFile = NULL;
    int c, fVerbose = 0;
    int bi  = 0;
    Extra_UtilGetoptReset();
    // TODO: use a flag to block Bnd_Man
    while ( ( c = Extra_UtilGetopt( argc, argv, "Ivh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            bi = atoi(argv[globalUtilOptind++]);
            break;    
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9BMiter(): There is no AIG.\n" );
        return 0;
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9BMiter(): AIG should be given on the command line.\n" );
        return 0;
    }

    // get the input file name
    FileName = argv[globalUtilOptind];
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", ".blif", ".pla", ".eqn", ".bench" )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );

    pSecond = Gia_AigerRead( FileName, 0, 0, 0 );
    if ( pSecond == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9BMiter(): Cannot read the file name on the command line.\n" );
        return 0;
    }    
    pTemp = Gia_ManBoundaryMiter( pAbc->pGia, pSecond, fVerbose );
    Gia_ManStop( pSecond );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &bmiter -I <biNum> [-vh] <file>\n" );
    Abc_Print( -2, "\t         creates the boundary miter\n" );
    Abc_Print( -2, "\t-I <biNum>:   number of boundary inputs\n" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the implementation file\n");    
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenHie( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_GenSandwich( char ** pFNames, int nFNames, char * pFileName );
    char * pFileName = (char *)"sandwich.v";
    int c, fVerbose = 0;
    char ** pArgvNew;
    int     nArgcNew;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Fvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a file name.\n" );
                goto usage;
            }
            pFileName = argv[globalUtilOptind++];
            break;            
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;    
    if ( nArgcNew < 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenHie(): At least one AIG file should be given on the command line.\n" );
        return 0;
    }        
    Gia_GenSandwich( pArgvNew, nArgcNew, pFileName );
    return 0;
usage:
    Abc_Print( -2, "usage: &gen_hie [-F <file>] [-vh] <file[1]> <file[2]> ...  <file[N]>\n" );
    Abc_Print( -2, "\t            generates a hierarchical design in Verilog\n" );
    Abc_Print( -2, "\t-F <file> : the output file name (optional) [default = \"sandwich.v\"]\n" );
    Abc_Print( -2, "\t-v        : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h        : print the command usage\n");
    Abc_Print( -2, "\t<files>   : the AIG files for the instance modules\n");    
    Abc_Print( -2, "\t            (the PO count of <file[i]> should not be less than the PI count of <file[i+1]>)\n");    
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9PutOnTop( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_GenPutOnTop( char ** pFNames, int nFNames );
    Gia_Man_t * pMan = NULL;
    int c, fVerbose = 0;
    char ** pArgvNew;
    int     nArgcNew;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {        
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    pArgvNew = argv + globalUtilOptind;
    nArgcNew = argc - globalUtilOptind;    
    if ( nArgcNew < 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9PutOnTop(): At least one AIG file should be given on the command line.\n" );
        return 0;
    }        
    pMan = Gia_GenPutOnTop( pArgvNew, nArgcNew );
    if ( pMan == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9PutOnTop(): Computing the resulting AIS has failed.\n" );
        return 0;
    }    
    Abc_FrameUpdateGia( pAbc, pMan );
    return 0;
usage:
    Abc_Print( -2, "usage: &putontop [-vh] <file[1]> <file[2]> ...  <file[N]>\n" );
    Abc_Print( -2, "\t            generates an AIG by stacking several AIGs on top of each other\n" );
    Abc_Print( -2, "\t-v        : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h        : print the command usage\n");
    Abc_Print( -2, "\t<files>   : the AIGER files containing the input AIGs\n");
    Abc_Print( -2, "\t            the outputs of each AIG are connected to the inputs of the one on top of it\n" );
    Abc_Print( -2, "\t            if there are more outputs than inputs, new POs will be created\n" );
    Abc_Print( -2, "\t            if there are more inputs than outputs, new PIs are created\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
extern Bnd_Man_t* pBnd;

int Abc_CommandAbc9BRecover( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Cec4_ManSimulateTest( Gia_Man_t * p, Cec_ParFra_t * pPars );
    extern void Cec4_ManSetParams( Cec_ParFra_t * pPars );
    extern Gia_Man_t * Gia_ManBoundaryMiter( Gia_Man_t * p1, Gia_Man_t * p2, int fVerbose );
    Gia_Man_t *pSpec, *pImpl_out = 0, *pSpec_out = 0, *pMiter, *pPatched = 0, *pTemp, *pBmiter;
    char * FileName = NULL;
    FILE * pFile = NULL;
    int c, fVerbose = 0, success = 1, fEq = 1, fEqOut = 1;

    // params
    Gps_Par_t Pars, * pPars = &Pars;
    memset( pPars, 0, sizeof(Gps_Par_t) );
    Cec_ParCec_t ParsCec, *pParsCec = &ParsCec;
    Cec_ManCecSetDefaultParams( pParsCec );
    Cec_ParFra_t ParsFra, *pParsFra = &ParsFra;
    Cec4_ManSetParams( pParsFra );
    pParsFra -> fBMiterInfo = 1;

    // parse options
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vhCkeo" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            pParsFra->fVerbose ^= 1;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            pParsFra->nBTLimit = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( pParsFra->nBTLimit < 0 )
                goto usage;
            break;
        case 'k':
            pParsFra ->fUseCones ^= 1;
            break;
        case 'e':
            fEq ^= 1;
            break;
        case 'o':
            fEqOut ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9BRecover(): There is no AIG.\n" );
        return 0;
    }
    if ( argc != globalUtilOptind + 1 )
    {
        printf("%d\n", argc-globalUtilOptind);
        Abc_Print( -1, "Abc_CommandAbc9BRecover(): AIG should be given on the command line.\n" );
        return 0;
    }

    // read spec
    FileName = argv[globalUtilOptind];
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", ".blif", ".pla", ".eqn", ".bench" )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );
    pSpec = Gia_AigerRead( FileName, 0, 1, 0 );
    if ( pSpec == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9BRecover(): Cannot read the file name on the command line.\n" );
        return 0;
    }    
    if ( Gia_ManBufNum(pSpec) == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9BRecover(): The given spec should be hierarchical.\n" );
        Gia_ManStop(pSpec);
        return 0;
    }    

    // start boundary manager
    pBnd = Bnd_ManStart( pSpec, pAbc->pGia, fVerbose );

    // check boundary
    if ( 0 == Bnd_ManCheckBound( pSpec, fVerbose ) )
    {
        Abc_Print( -1, "Abc_CommandAbc9BRecover(): The given spec has invalid boundary.\n" );
        success = 0;
    }

    if ( success )
    {
        // create bmiter, run fraig, record mapping
        pBmiter = Bnd_ManStackGias( pSpec, pAbc->pGia );
        pTemp = Cec4_ManSimulateTest( pBmiter, pParsFra );

        // every output should be equivalent
        // else, terminate the command (TODO?)
        if ( !Bnd_ManCheckCoMerged( pTemp ) )
        {
            Abc_Print( -1, "Abc_CommandAbc9BRecover(): The given spec and impl cannot be proved equivalent.\n" );
            success = 0;
        }

        Gia_ManStop(pBmiter);
        Gia_ManStop(pTemp);
    }

    if ( success )
    {
        // find 
        Bnd_ManFindBound( pSpec, pAbc->pGia );

        // create spec_out and 
        pSpec_out = Bnd_ManGenSpecOut( pSpec );
        if ( !pSpec_out ) success = 0;
        pImpl_out = Bnd_ManGenImplOut( pAbc->pGia );
        if ( !pImpl_out ) success = 0;

        // Gia_AigerWrite( pSpec_out, "spec_out.aig", 0, 0, 0 );
        // Gia_AigerWrite( pImpl_out, "impl_out.aig", 0, 0, 0 );
        // Gia_ManPrintStats( pSpec_out, pPars );
        // Gia_ManPrintStats( pImpl_out, pPars );

        if ( !success )
        {
            printf("Abc_CommandAbc9BRecover(): The generated boundary is invalid. The circuit is not changed.\n");
        }
    }

    if ( success )
    {

        // check if spec_out and imnpl_out are equivalent
        if ( fVerbose ) 
        {
            if ( fEqOut )
            {
                printf("Checking the equivalence of spec_out and impl_out\n");
                pMiter = Gia_ManMiter( pSpec_out, pImpl_out, 0, 1, 0, 0, 0 );
                Bnd_ManSetEqOut( Cec_ManVerify( pMiter, pParsCec ) );
                Gia_ManStop( pMiter );
            }
            else
            {
                printf("Skip checking the equivalence of spec_out and impl_out\n");
            }
        }

        // generate patched impl
        if ( fVerbose ) printf("Generating patched impl\n");
        pPatched = Bnd_ManGenPatched1( pImpl_out, pSpec );

        // // generate patched spec just for debugging
        // printf("Generating patched spec\n");
        // pTemp = Bnd_ManGenPatched( pSpec_out, pAbc->pGia, pPatch );
        // printf("Checking the equivalence of patched spec and patched impl\n");
        // pMiter = Gia_ManMiter( pTemp, pPatched, 0, 1, 0, 0, 0 );
        // Cec_ManVerify( pMiter, pParsCec );
        // Gia_ManStop( pMiter );
        // printf("Checking the equivalence of patched spec and patch\n");
        // pMiter = Gia_ManMiter( pTemp, pPatch, 0, 1, 0, 0, 0 );
        // Cec_ManVerify( pMiter, pParsCec );
        // Gia_ManStop( pMiter );

        // Gia_ManStop( pTemp );

        // check if patched is equiv to spec
        if ( fVerbose ) 
        {
            if ( fEq ) printf("Checking the equivalence of patched impl and spec\n");
            else printf("Skip checking the equivalence of patched impl and spec\n");
        }
        if ( fEq )
        {
            pMiter = Gia_ManMiter( pSpec, pPatched, 0, 1, 0, 0, 0 );
            success = Cec_ManVerify( pMiter, pParsCec );
            Bnd_ManSetEqRes( success );
            if ( !success )
            {
                printf("Failed. The generated AIG is not equivalent.\n");
            }
            Gia_ManStop( pMiter );
        }

    }

    if ( fVerbose ) Bnd_ManPrintStats();

    Gia_ManStop( pSpec );
    if ( pSpec_out ) Gia_ManStop( pSpec_out );
    if ( pImpl_out ) Gia_ManStop( pImpl_out );
    if ( success )
    {
        if ( fEq ) printf("Success. The generated hierarchical impl is equivalent. (box size: %d -> %d)\n", Bnd_ManGetNInternal(), Bnd_ManGetNInternal() + Bnd_ManGetNExtra() );
        else printf("Success. But the equivalence in unknown (box size: %d -> %d)\n", Bnd_ManGetNInternal(), Bnd_ManGetNInternal() + Bnd_ManGetNExtra() );
    }
    if (pPatched) Abc_FrameUpdateGia( pAbc, pPatched );
    Bnd_ManStop();

    return 0;

usage:
    Abc_Print( -2, "usage: &brecover -I <biNum> [-vh] <impl> <patch>\n" );
    Abc_Print( -2, "\t         recover boundary using SAT-Sweeping\n" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t-k     : toggle using logic cones in the SAT solver [default = %s]\n", pParsFra->fUseCones? "yes": "no" );
    Abc_Print( -2, "\t-C num : the max number of conflicts at a node [default = %d]\n", pParsFra->nBTLimit );
    Abc_Print( -2, "\t-e     : toggle checking the equivalence of the result [default = %s]\n", fEq? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggle checking the equivalence of the outsides in verbose [default = %s]\n", fEqOut? "yes": "no" );
    Abc_Print( -2, "\t<impl> : the implementation aig. (should be equivalent to spec)\n");    
    Abc_Print( -2, "\t<patch> : the modified spec. (should be a hierarchical AIG)\n");    
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9StrEco( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Cec4_ManSimulateTest( Gia_Man_t * p, Cec_ParFra_t * pPars );
    extern void Cec4_ManSetParams( Cec_ParFra_t * pPars );
    Gia_Man_t *pMiter, *pPatch, *pPatched;
    char * FileName = NULL;
    FILE * pFile = NULL;
    int c, success = 1;
    int fVerbose = 0, fSkipStrash = 0;

    // params
    Gps_Par_t Pars, * pPars = &Pars;
    memset( pPars, 0, sizeof(Gps_Par_t) );
    Cec_ParCec_t ParsCec, *pParsCec = &ParsCec;
    Cec_ManCecSetDefaultParams( pParsCec );
    Cec_ParFra_t ParsFra, *pParsFra = &ParsFra;
    Cec4_ManSetParams( pParsFra );
    pParsFra -> fBMiterInfo = 1;

    // parse options
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vsh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 's':
            fSkipStrash ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9StrEco(): There is no AIG.\n" );
        return 0;
    }
    if ( argc != globalUtilOptind + 1 )
    {
        printf("%d\n", argc-globalUtilOptind);
        Abc_Print( -1, "Abc_CommandAbc9StrEco(): AIG should be given on the command line.\n" );
        return 0;
    }

    // read patch
    FileName = argv[globalUtilOptind];
    if ( (pFile = fopen( FileName, "r" )) == NULL )
    {
        Abc_Print( -1, "Cannot open input file \"%s\". ", FileName );
        if ( (FileName = Extra_FileGetSimilarName( FileName, ".aig", ".blif", ".pla", ".eqn", ".bench" )) )
            Abc_Print( 1, "Did you mean \"%s\"?", FileName );
        Abc_Print( 1, "\n" );
        return 1;
    }
    fclose( pFile );
    pPatch = Gia_AigerRead( FileName, 0, 1, 0 );
    if ( pPatch == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9StrEco(): Cannot read the file name on the command line.\n" );
        return 0;
    }    

    // generate patched impl
    if ( fVerbose ) printf("Generating patched impl\n");
    pPatched = Bnd_ManGenPatched2( pAbc->pGia, pPatch, fSkipStrash, fVerbose );

    if ( pPatched )
    {
        // check if patched is equiv to patch
        if ( fVerbose ) printf("Checking the equivalence of patched impl and patch\n");
        pMiter = Gia_ManMiter( pPatch, pPatched, 0, 1, 0, 0, 0 );
        success = Cec_ManVerify( pMiter, pParsCec );
        if( !success ) 
        {
            printf("Failed. The patched circuit is not equivalent.\n");
        }
        Gia_ManStop( pMiter );
        Abc_FrameUpdateGia( pAbc, pPatched );
    }

    Gia_ManStop( pPatch );
    if ( success )
    {
        printf("Success. The patched circuit is equivalent.\n");
    }

    return 0;

usage:
    Abc_Print( -2, "usage: &str_eco -I <biNum> [-vh] <impl> <patch>\n" );
    Abc_Print( -2, "\t         SAT-sweeping-based ECO\n" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n",  fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggles skipping structural hash [default = %s]\n",  fSkipStrash? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<impl> : the implementation aig. (should be equivalent to spec)\n");    
    Abc_Print( -2, "\t<patch> : the modified spec. (should be a hierarchical AIG)\n");    
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenCex( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_GenerateCexes( char * pFileName, Gia_Man_t * p, int nMaxTries, int nMinCexes, int fUseSim, int fUseSat, int fShort, int fBlif, int fVerbose, int fVeryVerbose );
    char * pFileName = (char *)"cexes.txt";
    int nMinCexes =  1;
    int nMaxTries = 10;
    int fUseSim   =  1;
    int fUseSat   =  1;
    int fShort    =  0;
    int fBlif     =  0;
    int fVerbose  =  0;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CMFstcbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nMinCexes = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMinCexes < 0 )
                goto usage;
            break;
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nMaxTries = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nMaxTries < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a file name.\n" );
                goto usage;
            }
            pFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;     
        case 's':
            fUseSim ^= 1;
            break;
        case 't':
            fUseSat ^= 1;
            break;
        case 'c':
            fShort ^= 1;
            break;
        case 'b':
            fBlif ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Bmci(): There is no AIG.\n" );
        return 0;
    }
    Gia_GenerateCexes( pFileName, pAbc->pGia, nMaxTries, nMinCexes, fUseSim, fUseSat, fShort, fBlif, fVerbose, 0 );
    return 0;

usage:
    Abc_Print( -2, "usage: &gencex [-CM num] [-F file] [-stcbvh]\n" );
    Abc_Print( -2, "\t          generates satisfying assignments for each output of the miter\n" );
    Abc_Print( -2, "\t-C num  : the number of satisfying assignments [default = %d]\n",      nMinCexes );
    Abc_Print( -2, "\t-M num  : the max simulation runs before using SAT [default = %d]\n",  nMaxTries );
    Abc_Print( -2, "\t-F file : the output file name [default = %s]\n",                      pFileName );
    Abc_Print( -2, "\t-s      : toggles using reverse simulation [default = %s]\n",          fUseSim  ? "yes": "no" );
    Abc_Print( -2, "\t-t      : toggles using SAT solving [default = %s]\n",                 fUseSat  ? "yes": "no" );
    Abc_Print( -2, "\t-c      : toggles outputing care literals only [default = %s]\n",      fShort   ? "yes": "no" );
    Abc_Print( -2, "\t-b      : toggles outputing the BLIF file [default = %s]\n",           fBlif    ? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n",      fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Odc( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupOdc( Gia_Man_t * p, int iObj, int fVerbose );
    Gia_Man_t * pTemp;
    int c, iNode = -1, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            iNode = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iNode < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Odc(): There is no AIG.\n" );
        return 0;
    }
    if ( !Gia_ObjIsAnd( Gia_ManObj(pAbc->pGia, iNode) ) )
    {
        Abc_Print( -1, "Abc_CommandAbc9Odc(): Object with ID %d is not an internal node.\n", iNode );
        return 0;
    }
    pTemp = Gia_ManDupOdc( pAbc->pGia, iNode, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &odc [-N num] [-vh]\n" );
    Abc_Print( -2, "\t          generates the complement of the ODC for the node\n" );
    Abc_Print( -2, "\t-N num  : the node ID [default = undefined]\n" );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %d]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenRel( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManGenRel( Gia_Man_t * pGia, Vec_Int_t * vInsOuts, int nIns, char * pFileName, int fVerbose );
    Vec_Int_t * vInsOuts = NULL; char * pIns = NULL, * pOuts = NULL;
    int c, nIns = -1, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IOvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            pIns = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'O':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-O\" should be followed by an integer.\n" );
                goto usage;
            }
            pOuts = argv[globalUtilOptind];
            globalUtilOptind++;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenRel(): There is no AIG.\n" );
        return 0;
    }
    if ( argc != globalUtilOptind+1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenRel(): The output file name should be given as the last entry on the command line.\n" );
        return 0;
    }
    if ( pIns == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenRel(): A comma-separated list of window input node IDs should be given as \"-I list\" on the command line.\n" );
        return 0;
    }
    if ( pOuts == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenRel(): A comma-separated list of window output node IDs should be given as \"-O list\" on the command line.\n" );
        return 0;
    }
    vInsOuts = Vec_IntAlloc( 16 );
    Vec_IntPush( vInsOuts, atoi(pIns) );
    for ( c = 0; pIns[c]; c++ )
        if ( pIns[c] == ',' )
            Vec_IntPush( vInsOuts, atoi(pIns+c+1) );
    nIns = Vec_IntSize(vInsOuts);
    Vec_IntPush( vInsOuts, atoi(pOuts) );
    for ( c = 0; pOuts[c]; c++ )
        if ( pOuts[c] == ',' )
            Vec_IntPush( vInsOuts, atoi(pOuts+c+1) );
    if ( fVerbose ) {
        printf( "Deriving relation for %d inputs and %d outputs: ", nIns, Vec_IntSize(vInsOuts)-nIns );
        Vec_IntPrint( vInsOuts );
    }
    Gia_ManGenRel( pAbc->pGia, vInsOuts, nIns, argv[globalUtilOptind], fVerbose );
    Vec_IntFree( vInsOuts );
    return 0;

usage:
    Abc_Print( -2, "usage: &genrel [-I n1,n2,...nN] [-O m1,m2,...,mM] [-vh] <filename>\n" );
    Abc_Print( -2, "\t          generates Boolean relation for the given logic window\n" );
    Abc_Print( -2, "\t-I list : comma-separated list of window inputs [default = undefined]\n" );
    Abc_Print( -2, "\t-O list : comma-separated list of window outputs [default = undefined]\n" );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t<file>  : the output file name (PLA format extended to represented Boolean relations)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenMux( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManGenMux( int nIns, char * pNums );
    Gia_Man_t * pTemp = NULL;
    int c, nIns = 0, fVerbose = 0;
    char * pNums = NULL;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Kvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nIns = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIns < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind && nIns > 0 ) 
    {
        extern char * Wlc_NtkMuxTreeString( int nIns );
        if ( nIns <= 16 )
            pNums = Wlc_NtkMuxTreeString( nIns );
        else
        {
            Abc_Print( -1, "Abc_CommandAbc9GenMux(): The number of controls should not be in the range: 2 <= n <= 16.\n" );
            return 0;            
        }
    }
    else if ( argc == globalUtilOptind+1 ) 
    {
        int nIns2 = 0;
        pNums = argv[globalUtilOptind];
        for ( c = 0; pNums[c]; c++ )
            nIns2 += (int)(pNums[c] - '0');
        if ( nIns > 0 && nIns2 > 0 && nIns != nIns2 ) 
        {
            Abc_Print( -1, "Abc_CommandAbc9GenMux(): The number of inputs does not match.\n" );
            return 0;
        }
        nIns = nIns2;
    }
    else
    {
        Abc_Print( -1, "Abc_CommandAbc9GenMux(): The number of controls or the control input groups should be given on the command line.\n" );
        return 0;
    }
    pTemp = Gia_ManGenMux( nIns, pNums );
    Abc_FrameUpdateGia( pAbc, pTemp );    
    Abc_Print( 1, "Generated a %d:1 MUX with the following groups: %s\n", 1<<nIns, pNums );
    return 0;

usage:
    Abc_Print( -2, "usage: &genmux [-K <num>] [-vh] <string>\n" );
    Abc_Print( -2, "\t         generates the multiplexer\n" );
    Abc_Print( -2, "\t-K num : the number of control inputs [default = undefined]\n" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\tstring : the sizes of control input groups\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenComp( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupGenComp( int nBits, int fInterleave, int fSigned );
    Gia_Man_t * pTemp = NULL;
    int c, nBits = 4, fInter = 0, fSigned = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Kisvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nBits = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBits < 0 )
                goto usage;
            break;
        case 'i':
            fInter ^= 1;
            break;            
        case 's':
            fSigned ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( nBits == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenComp(): The number of inputs should be defined on the command line \"-K num\".\n" );
        return 0;            
    }    
    pTemp = Gia_ManDupGenComp( nBits, fInter, fSigned );
    Abc_FrameUpdateGia( pAbc, pTemp );
    if ( fVerbose )
        Abc_Print( 1, "Generated %d-bit comparator.\n", nBits );
    return 0;

usage:
    Abc_Print( -2, "usage: &gencomp [-K <num>] [-isvh]\n" );
    Abc_Print( -2, "\t         generates the comparator (a > b)\n" );
    Abc_Print( -2, "\t-K num : the bitwidth of the inputs [default = %d]\n", nBits );
    Abc_Print( -2, "\t-i     : toggles using interleaved variable ordering [default = %s]\n", fInter ? "yes": "no" );
    Abc_Print( -2, "\t-s     : toggles generating signed comparator [default = %s]\n", fSigned ? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenSorter( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManGenSorter( int LogN );
    Gia_Man_t * pTemp = NULL;
    int c, LogN = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Kvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            LogN = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( LogN < 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( LogN == 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenComp(): The number of inputs should be defined on the command line \"-K num\".\n" );
        return 0;            
    }    
    pTemp = Gia_ManGenSorter( LogN );
    Abc_FrameUpdateGia( pAbc, pTemp );
    if ( fVerbose )
        Abc_Print( 1, "Generated %d-input sorter composed of %d elementary 2-bit sorters.\n", 1 << LogN, (1 << LogN) * LogN * (LogN-1) / 4 + (1 << LogN) - 1 );
    return 0;

usage:
    Abc_Print( -2, "usage: &gensorter [-K <num>] [-vh]\n" );
    Abc_Print( -2, "\t         generates the sorter using pair-wise sorting algorithm\n" );
    Abc_Print( -2, "\t-K num : the base-2 log of the number of inputs [default = undefined]\n" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenNeuron( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManGenNeuron( char * pFileName, int nIBits, int nLutSize, int fDump, int fVerbose );
    Gia_Man_t * pTemp = NULL;
    int c, nBits = 0, nLutSize = 0, fDump = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IKdvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nBits = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBits < 0 )
                goto usage;
            break;
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;
        case 'd':
            fDump ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( nBits < 1 || nBits > 31 )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenNeuron(): The number of inputs (0 < K < 32) should be defined on the command line \"-K num\".\n" );
        return 0;            
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( 1, "Input file is not given.\n" );
        return 0;
    }
    pTemp = Gia_ManGenNeuron( argv[globalUtilOptind], nBits, nLutSize, fDump, fVerbose );
    if ( fVerbose )
        printf( "Generated %d-argument neuron with %d-bit inputs and %d-bit output.\n", Gia_ManCiNum(pTemp)/nBits, nBits, Gia_ManCoNum(pTemp) );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &genneuron [-IK <num>] [-dvh] <file>\n" );
    Abc_Print( -2, "\t         generates the implementation of one neuron\n" );
    Abc_Print( -2, "\t-I num : the bit-width of each input [default = undefined]\n" );
    Abc_Print( -2, "\t-K num : the LUT size for logic structuring [default = undefined]\n" );
    Abc_Print( -2, "\t-d     : toggles dumping RTL Verilog [default = %s]\n", fDump ? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    Abc_Print( -2, "\t<file> : the weights one per line followed by the bias (in hex notation)\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenAdder( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManGenAdder( int nVars, int fSK, int fBK, int fHC, int fCarries, int fVerbose );
    Gia_Man_t * pTemp = NULL;
    int c, nBits = 0, fSK = 0, fBK = 0, fHC = 0, fCarries = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Nsbhcv" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nBits = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBits < 0 )
                goto usage;
            break;
        case 's':
            fSK ^= 1;
            break;
        case 'b':
            fBK ^= 1;
            break;
        case 'h':
            fHC ^= 1;
            break;
        case 'c':
            fCarries ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( nBits < 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenAdder(): The number of inputs should be defined on the command line \"-N num\".\n" );
        return 0;            
    }
    pTemp = Gia_ManGenAdder( nBits, fSK, fBK, fHC, fCarries, fVerbose );
    Abc_FrameUpdateGia( pAbc, pTemp );
    return 0;

usage:
    Abc_Print( -2, "usage: &genadder [-N <num>] [-sbhcv]\n" );
    Abc_Print( -2, "\t         generates a prefix adder (by default, the ripple carry adder)\n" );
    Abc_Print( -2, "\t-N num : the bit-width of the adder [default = undefined]\n" );
    Abc_Print( -2, "\t-s     : toggles using Sklansky adder [default = %s]\n", fSK ? "yes": "no" );
    Abc_Print( -2, "\t-b     : toggles using Brent-Kung adder [default = %s]\n", fBK ? "yes": "no" );
    Abc_Print( -2, "\t-h     : toggles using Huan-Carlsson adder [default = %s]\n", fHC ? "yes": "no" );
    Abc_Print( -2, "\t-c     : toggles using carry-in and carry-out [default = %s]\n", fCarries ? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    return 1;
}

#ifdef __cplusplus
extern "C" {
#endif

int* adder_return_array(int width, int mfo, int use_or, int seed, int num_rounds, int delay_relaxation, int fVerbose, int fDumpVer, int fDumpMiter,  int* pnObjs, int* pnIns, int* pnLatches, int* pnOuts, int* pnAnds);

#ifdef __cplusplus
}
#endif


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9GenPrefix( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupFromArray( int * pObjs, int nObjs, int nIns, int nLatches, int nOuts, int nAnds );
    int c, nBits = 8, nFans = 4, Seed = 0, nIters = 1, DelayRelax = 0, fDumpVer = 0, fDumpMiter = 0, fVerbose = 0, use_or = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "NFSIRdmov" ) ) != EOF )
    {
        switch ( c )
        {
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nBits = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBits < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFans = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFans < 0 )
                goto usage;
            break;
        case 'S':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
                goto usage;
            }
            Seed = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( Seed < 0 )
                goto usage;
            break;
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIters = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIters < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            DelayRelax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( DelayRelax < 0 )
                goto usage;
            break;


        case 'd':
            fDumpVer ^= 1;
            break;
        case 'm':
            fDumpMiter ^= 1;
            break;
        case 'o':
            use_or ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( nBits < 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9GenPrefix(): The number of inputs should be defined on the command line \"-N num\".\n" );
        return 0;            
    }
    else
    {
         int nObjs = 0, nIns = 0, nLatches = 0, nOuts = 0, nAnds = 0;
         int * pObjs = adder_return_array( nBits, nFans, use_or, Seed, nIters, DelayRelax, fVerbose, fDumpVer, fDumpMiter,   &nObjs, &nIns, &nLatches, &nOuts, &nAnds );
         if ( pObjs == NULL ) {
            printf( "Prefix tree with %d inputs and %d maximum fanout does not exist.\n", nBits, nFans );
         } else {
            Gia_Man_t * pTemp = Gia_ManDupFromArray( pObjs, nObjs, nIns, nLatches, nOuts, nAnds );
            Abc_FrameUpdateGia( pAbc, pTemp );
            ABC_FREE( pObjs );
         }
    }
    return 0;

usage:
    Abc_Print( -2, "usage: &genprefix [-NFSIR <num>] [-dmov]\n" );
    Abc_Print( -2, "\t         generates a prefix adder with minimum depth\n" );
    Abc_Print( -2, "\t-N num : the bit-width of the adder [default = %d]\n", nBits );
    Abc_Print( -2, "\t-F num : the limit on the fanout count [default = %d]\n", nFans );
    Abc_Print( -2, "\t-S num : the random seed used to randomize search [default = %d]\n", Seed );
    Abc_Print( -2, "\t-I num : the number of iterations to find the smallest prefix tree [default = %d]\n", nIters );
    Abc_Print( -2, "\t-R num : the delay relaxation (the max allowed level increase over log2(N)) [default = %d]\n", DelayRelax );
    Abc_Print( -2, "\t-d     : toggles dumping the adder in Verilog [default = %s]\n", fDumpVer ? "yes": "no" );
    Abc_Print( -2, "\t-m     : toggles dumping the miter in Verilog [default = %s]\n", fDumpMiter ? "yes": "no" );
    Abc_Print( -2, "\t-o     : toggles using additional optimization [default = %s]\n", use_or ? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggles printing verbose information [default = %s]\n\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t         The code of this command is contributed by Martin Povišer <povik@cutebit.org>\n\n" );
    Abc_Print( -2, "\t         The implementation is inspired by S. Roy, M. Choudhury, R. Puri, D. Pan,\n" );
    Abc_Print( -2, "\t         \"Polynomial time algorithm for area and power efficient adder synthesis\n" );
    Abc_Print( -2, "\t         in high-performance designs\", Proc. ASP-DAC 2015.\n" );
    Abc_Print( -2, "\t         https://www.cerc.utexas.edu/utda/publications/C166.pdf\n" );
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Window( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupWindow( Gia_Man_t * p, Vec_Int_t * vCut );
    Gia_Man_t * pNew = NULL;
    Vec_Int_t * vCut = NULL;
    int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Window(): There is no AIG.\n" );
        return 0;
    }
    if ( argc == globalUtilOptind )
    {
        int nCutSize = 6, nCuts = 30;
        extern void Gia_ManExploreCutsTest( Gia_Man_t * pGia, int nCutSize, int nCuts, int fVerbose );
        printf( "Here are %d the most frequently appearing %d-cuts:\n", nCutSize, nCuts );
        Gia_ManExploreCutsTest( pAbc->pGia, nCutSize, nCuts, fVerbose );
        return 0;
    }
    if ( argc-globalUtilOptind < 1 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Window(): The window should have at least one support variable.\n" );
        return 0;
    }
    vCut = Vec_IntAlloc( 100 );
    for ( c = globalUtilOptind; c < argc; c++ )
        Vec_IntPush( vCut, atoi(argv[c]) );    
    pNew = Gia_ManDupWindow( pAbc->pGia, vCut );
    Abc_FrameUpdateGia( pAbc, pNew );
    Vec_IntFree( vCut );
    return 0;

usage:
    Abc_Print( -2, "usage: &window [-vh] <node1> <node2> ... <nodeN>\n" );
    Abc_Print( -2, "\t          generates a logic window supported by the given nodes\n" );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t<nodes> : the list of window inputs\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9FunAbs( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupEncode( Gia_Man_t * p, Vec_Int_t * vVarNums, int fVerbose );
    extern Vec_Int_t * Gia_ManCofClassPattern( Gia_Man_t * p, Vec_Int_t * vVarNums, int fVerbose );
    extern void        Gia_ManCofClassRand( Gia_Man_t * p, int nVars, int nRands );
    extern void        Gia_ManCofClassEnum( Gia_Man_t * p, int nVars );
    Gia_Man_t * pNew = NULL;
    Vec_Int_t * vVars = NULL;
    int c, nVars = 6, nRands = 0, fEnum = 0, fPrint = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KRepvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nVars = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nVars < 0 )
                goto usage;
            break;
        case 'R':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
                goto usage;
            }
            nRands = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nRands < 0 )
                goto usage;
            break;
        case 'e':
            fEnum ^= 1;
            break;
        case 'p':
            fPrint ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9FunAbs(): There is no AIG.\n" );
        return 0;
    }
    if ( Gia_ManPoNum(pAbc->pGia) != 1 || Gia_ManRegNum(pAbc->pGia) != 0 ) {
        Abc_Print( -1, "Abc_CommandAbc9FunAbs(): Works only for comb AIGs with one output.\n" );
        return 0;
    }
    if ( nVars >= Gia_ManPiNum(pAbc->pGia) ) {
        Abc_Print( -1, "Abc_CommandAbc9FunAbs(): The number of variables (%d) should be less the PI count (%d).\n", nVars, Gia_ManPiNum(pAbc->pGia) );
        return 0;        
    }
    if ( nRands ) {
        Gia_ManCofClassRand( pAbc->pGia, nVars, nRands );
        return 0;
    }
    if ( fEnum ) {
        Gia_ManCofClassEnum( pAbc->pGia, nVars );
        return 0;
    }
    if ( argc == globalUtilOptind ) {
        vVars = Vec_IntStartNatural( nVars );
        printf( "Abstracting the first %d variables of the AIG.\n", nVars );
    }
    else {
        vVars = Vec_IntAlloc( argc );
        for ( c = globalUtilOptind; c < argc; c++ )
            Vec_IntPush( vVars, atoi(argv[c]) );
        printf( "Abstracting variables: " );
        Vec_IntPrint( vVars );
    }
    if ( fPrint ) {
        Vec_Int_t * vTemp = Gia_ManCofClassPattern( pAbc->pGia, vVars, 1 );
        Vec_IntFree( vTemp );
    } 
    else {
        pNew = Gia_ManDupEncode( pAbc->pGia, vVars, fVerbose );
        Abc_FrameUpdateGia( pAbc, pNew );
    }    
    Vec_IntFree( vVars );
    return 0;

usage:
    Abc_Print( -2, "usage: &funabs [-KR num] [-epvh] <node1> <node2> ... <nodeN>\n" );
    Abc_Print( -2, "\t          generates an abstraction of the function\n" );
    Abc_Print( -2, "\t-K num  : the number of primary inputs [default = %d]\n", nVars );
    Abc_Print( -2, "\t-R num  : the number of random K-set to try [default = %d]\n", nRands );
    Abc_Print( -2, "\t-e      : toggles enumerating bound sets of the given size [default = %s]\n", fEnum ? "yes": "no" );
    Abc_Print( -2, "\t-p      : toggles printing statistics only [default = %s]\n", fPrint ? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t<nodes> : the index list of primary inputs to be abstrated\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9DsdInfo( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManPrintDsdMatrix( Gia_Man_t * p, int iIn );
    extern void Gia_ManCheckDsd( Gia_Man_t * p, int OffSet, int fVerbose );
    extern void Gia_ManRecurDsd( Gia_Man_t * p, int fVerbose );
    int c, iIn = -1, fDsd = 0, fAll = 0, fRecur = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Vdarvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'V':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
                goto usage;
            }
            iIn = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( iIn < 0 )
                goto usage;
            break;
        case 'd':
            fDsd ^= 1;
            break;            
        case 'a':
            fAll ^= 1;
            break;
        case 'r':
            fRecur ^= 1;
            break;                        
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9DsdInfo(): There is no AIG.\n" );
        return 0;
    }
    if ( fRecur )
    {
        Gia_ManRecurDsd( pAbc->pGia, fVerbose );
        return 0;
    }
    if ( fDsd ) 
    {
        if ( iIn == -1 ) {
            printf( "Function = " );
            Gia_ManCheckDsd( pAbc->pGia, 0, fVerbose );
            if ( fAll ) {
                for ( iIn = 0; iIn < Gia_ManPiNum(pAbc->pGia); iIn++ )
                    for ( c = 0; c < 2; c++ ) {
                        Gia_Man_t * pTemp = Gia_ManDupCofactorVar( pAbc->pGia, iIn, c );
                        printf( "Cof(%c=%d) = ", 'a' + iIn, c );
                        Gia_ManCheckDsd( pTemp, 12, fVerbose );
                        Gia_ManStop( pTemp );
                    }                
            }
            return 0;
        }
        for ( c = 0; c < 2; c++ ) {
            Gia_Man_t * pTemp = Gia_ManDupCofactorVar( pAbc->pGia, iIn, c );
            printf( "    Cof(%c=%d) = ", 'a' + iIn, c );
            Gia_ManCheckDsd( pTemp, 0, fVerbose );
            if ( fAll ) {
                for ( int iIn2 = 0; iIn2 < Gia_ManPiNum(pAbc->pGia); iIn2++ ) if ( iIn2 != iIn )
                    for ( int c2 = 0; c2 < 2; c2++ ) {
                        Gia_Man_t * pTemp2 = Gia_ManDupCofactorVar( pTemp, iIn2, c2 );
                        printf( "Cof(%c=%d,%c=%d) = ", 'a' + iIn, c, 'a' + iIn2, c2 );
                        Gia_ManCheckDsd( pTemp2, 12, fVerbose );
                        Gia_ManStop( pTemp2 );
                    }
            }
            Gia_ManStop( pTemp );
        }
        return 0;
    }
    if ( iIn < 0 || iIn >= Gia_ManPiNum(pAbc->pGia) )
    {
        Abc_Print( -1, "Abc_CommandAbc9DsdInfo(): The input variable is not specified.\n" );
        return 0;
    }
    Gia_ManPrintDsdMatrix( pAbc->pGia, iIn );
    return 0;

usage:
    Abc_Print( -2, "usage: &dsdinfo [-V num] [-drvh]\n" );
    Abc_Print( -2, "\t          computes and displays information related to DSD\n" );
    Abc_Print( -2, "\t-V num  : the zero-based index of the input variable [default = %d]\n", iIn );
    Abc_Print( -2, "\t-d      : toggles showing DSD structure [default = %s]\n", fDsd ? "yes": "no" );
    Abc_Print( -2, "\t-r      : toggles recursive cofactoring to get a full DSD [default = %s]\n", fRecur ? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}


/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9FunTrace( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Vec_Mem_t * Dau_CollectNpnFunctions( word * p, int nVars, int fVerbose );
    extern void Gia_ManMatchCuts( Vec_Mem_t * vTtMem, Gia_Man_t * pGia, int nCutSize, int nCutNum, int fVerbose );
    extern Vec_Mem_t * Abc_TruthDecRead( char * pFileName, int nVarNum );
    extern void Abc_TtStoreDump( char * pFileName, Vec_Mem_t * vTtMem, int nBytes );
    extern Vec_Mem_t * Dau_CollectBoothFunctions( int nLog2Radix );
    int c, nVars, nVars2, nCutNum = 32, nCutSize = 0, nBooth = 0, nNumFuncs = 5, nNumCones = 3, fOutputs = 0, fVerbose = 0; word * pTruth = NULL;
    char * pStr = NULL, * pFuncFileName = "_npn_member_funcs_.data"; Vec_Mem_t * vTtMem = NULL; Gia_Man_t * pTemp;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "CKBNMFovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutNum < 0 )
                goto usage;
            break;            
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutSize < 0 )
                goto usage;
            break;            
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            nBooth = atoi(argv[globalUtilOptind]);
            if ( nBooth < 4 || nBooth > 1024 ) {
                Abc_Print( -1, "Currently support radix value from 4 to 1024.\n" );
                goto usage;                  
            }
            nBooth = Abc_Base2Log(nBooth);
            if ( (1 << nBooth) != atoi(argv[globalUtilOptind]) ) {
                Abc_Print( -1, "The Booth radix value %s is not a degree of 2.\n", argv[globalUtilOptind] );
                goto usage;                
            }
            globalUtilOptind++;
            break;            
        case 'N':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-N\" should be followed by an integer.\n" );
                goto usage;
            }
            nNumFuncs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNumFuncs < 0 )
                goto usage;
            break;            
        case 'M':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
                goto usage;
            }
            nNumCones = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nNumCones < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by a file name.\n" );
                goto usage;
            }
            pFuncFileName = argv[globalUtilOptind];
            globalUtilOptind++;
            break;            
        case 'o':
            fOutputs ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9FunTrace(): There is no AIG.\n" );
        return 0;
    }
    if ( argc == globalUtilOptind )
    {
        if ( nBooth ) {
            vTtMem = Dau_CollectBoothFunctions( nBooth );
            printf( "Generated %d %d-input booth radix-%d encoder functions.\n", 1<<(nBooth-1), nBooth+1, 1<<nBooth );
            nCutSize = nBooth+1;
        }
        else {
            abctime clkStart = Abc_Clock();
            int nFileSize = Gia_FileSize( pFuncFileName );
            if ( nFileSize == 0 )
            {
                Abc_Print( -1, "Abc_CommandAbc9FunTrace(): Truth table in hex notation (or file name with the functions) should be given on the command line.\n" );
                return 0;
            }
            if ( nCutSize == 0 )
            {
                Abc_Print( -1, "Abc_CommandAbc9FunTrace(): The cut size needs to be specified on the command line (-K <num>) when precomputed functions are used.\n" );
                return 0;            
            }
            vTtMem = Abc_TruthDecRead( pFuncFileName, nCutSize );
            printf( "Finished reading %d %d-input function from file \"%s\".  ", nFileSize / 8 / Abc_Truth6WordNum(nCutSize), nCutSize, pFuncFileName );
            Abc_PrintTime( 1, "Time", Abc_Clock() - clkStart );
        }
        Gia_ManMatchCuts( vTtMem, pAbc->pGia, nCutSize, nCutNum, fVerbose );
        Vec_MemHashFree( vTtMem );
        Vec_MemFree( vTtMem );
        return 0;        
    }
    if ( strstr(argv[globalUtilOptind], ".aig") ) 
    { // the entry on the command line is an AIGER file
        extern void Gia_ManMatchCones( Gia_Man_t * pBig, Gia_Man_t * pSmall, int nCutSize, int nCutNum, int nNumFuncs, int nNumCones, int fVerbose );
        extern void Gia_ManMatchConesOutput( Gia_Man_t * pBig, Gia_Man_t * pSmall, int nCutNum, int fVerbose );
        pTemp = Gia_AigerRead( argv[globalUtilOptind], 0, 0, 0 );
        if ( pTemp == NULL ) {
            Abc_Print( -1, "Abc_CommandAbc9FunTrace(): Cannot read input AIG \"%s\".\n", argv[globalUtilOptind] );
            return 0;                
        }
        if ( fOutputs ) {
            if ( Gia_ManCiNum(pTemp) > 16 ) {
                Abc_Print( -1, "Abc_CommandAbc9FunTrace(): The AIG \"%s\" has more than 16 primary inputs.\n", argv[globalUtilOptind] );
                Gia_ManStop( pTemp );
                return 0;                   
            }
            Gia_ManMatchConesOutput( pAbc->pGia, pTemp, nCutNum, fVerbose );
        }
        else  {
            if ( nCutSize == 0 ) {
                Abc_Print( -1, "Abc_CommandAbc9FunTrace(): The LUT size for profiling should be given on the command line.\n" );
                return 0;            
            }
            Gia_ManMatchCones( pAbc->pGia, pTemp, nCutSize, nCutNum, nNumFuncs, nNumCones, fVerbose );
        }
        Gia_ManStop( pTemp );
        return 0;
    }
    pStr = argv[globalUtilOptind];
    if ( pStr[0] == '0' && pStr[1] == 'x' )
        pStr += 2;
    nVars = Abc_Base2Log(strlen(pStr)*4);
    if ( (1 << nVars) != strlen(pStr)*4 )
    {
        Abc_Print( -1, "Abc_CommandAbc9FunTrace(): String \"%s\" does not look like a truth table of a %d-var function.\n", pStr, nVars );
        return 0;
    }
    pTruth = ABC_CALLOC( word, Abc_Truth6WordNum(nVars+1) );
    nVars2 = Abc_TtReadHex( pTruth, pStr );
    if ( nVars != nVars2 )
    {
        ABC_FREE( pTruth );
        Abc_Print( -1, "Abc_CommandAbc9FunTrace(): String \"%s\" does not look like a truth table of a %d-var function.\n", pStr, nVars );
        return 0;
    }
    //Abc_TtPrintHexRev( stdout, pTruth, nVars ); printf( "\n" );
    vTtMem = Dau_CollectNpnFunctions( pTruth, nVars, fVerbose );
    Gia_ManMatchCuts( vTtMem, pAbc->pGia, nVars, nCutNum, fVerbose );
    if ( pFuncFileName ) {
        Abc_TtStoreDump( pFuncFileName, vTtMem, 8 * Vec_MemEntrySize(vTtMem) );
        printf( "Dumped %d NPN class member functions into file \"%s\".\n", Vec_MemEntryNum(vTtMem), pFuncFileName );
    }
    Vec_MemHashFree( vTtMem );
    Vec_MemFree( vTtMem );
    return 0;

usage:
    Abc_Print( -2, "usage: &funtrace [-CKBNM num] [-F file] [-ovh] {<truth> or <file.aig>}\n" );
    Abc_Print( -2, "\t          traces the presence of the function in the current AIG\n" );
    Abc_Print( -2, "\t-C num  : the number of cuts to compute at each node [default = %d]\n", nCutNum );
    Abc_Print( -2, "\t-K num  : the LUT size to use when <file.aig> is given [default = %d]\n", nCutSize );
    Abc_Print( -2, "\t-B num  : the radix of booth partial products to detect [default = %d]\n", nBooth );
    Abc_Print( -2, "\t-N num  : the number of functions to use when <file.aig> or -F <file> are used [default = %d]\n", nNumFuncs );
    Abc_Print( -2, "\t-M num  : the number of logic cones to use when <file.aig> is given [default = %d]\n", nNumCones );
    Abc_Print( -2, "\t-F file : the file name to store the NPN member functions [default = %s]\n", pFuncFileName );
    Abc_Print( -2, "\t-o      : toggles using AIG output functions instead of frequent cut functions [default = %s]\n", fOutputs ? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t<truth> : truth table in the hexadecimal notation used for tracing\n");
    Abc_Print( -2, "\t<file>  : AIG whose K-input functions will be used for tracing\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9MulFind( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManMulFind( Gia_Man_t * p, int nCutNum, int fVerbose );
    int c, nCutNum = 8, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Cvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutNum < 0 )
                goto usage;
            break;            
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9MulFind(): There is no AIG.\n" );
        return 0;
    }
    Gia_ManMulFind( pAbc->pGia, nCutNum, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &mulfind [-C num] [-vh]\n" );
    Abc_Print( -2, "\t          detects multipliers in the given AIG\n" );
    Abc_Print( -2, "\t-C num  : the number of cuts to compute at each node [default = %d]\n", nCutNum );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9MulFind3( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManMulFindNew( Gia_Man_t * p, int nABits, int nFanLim, int fLits, int fVerbose );
    int c, nABits = 0, nFanLim = 4, fLits = 0, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "IFlvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nABits = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nABits < 0 )
                goto usage;
            break;            
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFanLim = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFanLim < 0 )
                goto usage;
            break;            
        case 'l':
            fLits ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9MulFind(): There is no AIG.\n" );
        return 0;
    }
    Gia_ManMulFindNew( pAbc->pGia, nABits, nFanLim, fLits, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &mulfind3 [-IF num] [-lvh]\n" );
    Abc_Print( -2, "\t          detects multipliers in the given AIG\n" );
    Abc_Print( -2, "\t-I num  : the bit-width of the first input if known [default = %d]\n", nABits );
    Abc_Print( -2, "\t-F num  : the fanout limit [default = %d]\n", nFanLim );
    Abc_Print( -2, "\t-l      : toggles using literals instead of nodes [default = %s]\n", fLits ? "yes": "no" );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9BsFind( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern int Gia_ManBsFindBest( Gia_Man_t * pGia, int nWords, int nLutSize, int nBest, int nIterMax, int fVerbose );
    int c, nWords = 256, nLutSize = 6, nBest = 20, nIterMax = 10, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WKBIvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;            
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nLutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLutSize < 0 )
                goto usage;
            break;            
        case 'B':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-B\" should be followed by an integer.\n" );
                goto usage;
            }
            nBest = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nBest < 0 )
                goto usage;
            break;            
        case 'I':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
                goto usage;
            }
            nIterMax = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nIterMax < 0 )
                goto usage;
            break;            
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9MulFind(): There is no AIG.\n" );
        return 0;
    }
    Gia_ManBsFindBest( pAbc->pGia, nWords, nLutSize, nBest, nIterMax, fVerbose );
    return 0;

usage:
    Abc_Print( -2, "usage: &bsfind [-WKBI num] [-vh]\n" );
    Abc_Print( -2, "\t         found a good boundset for the multi-output function\n" );
    Abc_Print( -2, "\t-W num  : the number of simulation words to use [default = %d]\n", nWords );
    Abc_Print( -2, "\t-K num  : the number of bound-set variables (LUT size) [default = %d]\n", nLutSize );
    Abc_Print( -2, "\t-B num  : the number of best bound-sets to consider [default = %d]\n", nBest );
    Abc_Print( -2, "\t-I num  : the number of refinement iterations to perform [default = %d]\n", nIterMax );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9AndCare( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupAndCare( Gia_Man_t * p, Gia_Man_t * pCare );
    Gia_Man_t * pTemp = NULL, * pCare = NULL; int c, fVerbose = 0;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9AndCare(): There is no AIG.\n" );
        return 0;
    }
    if ( argc != globalUtilOptind + 1 )
    {
        Abc_Print( 1,"Abc_CommandAbc9AndCare(): There is no careset AIG.\n" );
        return 0;
    }
    pCare = Gia_AigerRead( argv[globalUtilOptind], 0, 0, 0 );
    if ( pCare == NULL )
        Abc_Print( -1, "Abc_CommandAbc9AndCare(): Reading careset from file has failed.\n" );
    else if ( Gia_ManPiNum(pAbc->pGia) != Gia_ManPiNum(pCare) )
        Abc_Print( -1, "Abc_CommandAbc9AndCare(): Careset should have the same number of primary inputs.\n" );
    else {
        pTemp = Gia_ManDupAndCare( pAbc->pGia, pCare );
        Abc_FrameUpdateGia( pAbc, pTemp );
    }
    Gia_ManStop( pCare );
    return 0;

usage:
    Abc_Print( -2, "usage: &andcare [-vh] <file>\n" );
    Abc_Print( -2, "\t          computes the conjunction of each primary output with the careset\n" );
    Abc_Print( -2, "\t-v      : toggles printing verbose information [default = %s]\n", fVerbose ? "yes": "no" );
    Abc_Print( -2, "\t-h      : print the command usage\n");
    Abc_Print( -2, "\t<file>  : input AIG file with the careset\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Cuts( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManComputeCutsCore( Gia_Man_t * pGia, int nCutSize0, int nCutNum0, int fTruth0, int fVerbose0, int fDumpText, int fDumpBin, char * pFileName );
    int nCutSize =  6;
    int nCutNum  = 16;
    int fTruth   =  1;
    int fVerbose =  1;
    int fDumpText = 0;
    int fDumpBin  = 0;
    int c;
    char * pFileName = NULL;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "KCtdbvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'K':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-K\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutSize = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutSize < 0 )
                goto usage;
            break;
        case 'C':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutNum = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutNum < 0 )
                goto usage;
            break;
        case 't':
            fTruth ^= 1;
            break;
        case 'd':
            fDumpText ^= 1;
            break;
        case 'b':
            fDumpBin ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Cuts(): There is no AIG.\n" );
        return 0;
    }
    if ( argc == globalUtilOptind + 1 )
        pFileName = argv[globalUtilOptind];
    else if ( argc != globalUtilOptind )
    {
        Abc_Print( 1,"Abc_CommandAbc9Cuts(): Trailing arguments on the command line.\n" );
        return 0;
    }
    if ( nCutSize < 2 || nCutSize > 14 )
    {
        Abc_Print( -1, "The number of cut leaves should belong to the range: %d <= K <= %d.\n", 2, 14 );
        return 1;
    }
    if ( nCutNum < 2 || nCutNum > 256 )
    {
        Abc_Print( -1, "The number of cuts per node should belong to the range: %d <= C <= %d.\n", 2, 256 );
        return 1;
    }
    if ( fDumpBin && !pFileName )
    {
        Abc_Print( -1, "Output binary file name should be provided on the command line.\n" );
        return 1;
    }
    Gia_ManComputeCutsCore( pAbc->pGia, nCutSize, nCutNum, fTruth, fVerbose, fDumpText, fDumpBin, pFileName );
    return 0;

usage:
    Abc_Print( -2, "usage: &cuts [-KC num] [-tdbvh]\n" );
    Abc_Print( -2, "\t         computes K-input cuts for the nodes in the current AIG\n" );
    Abc_Print( -2, "\t-K num : max number of leaves (%d <= num <= %d) [default = %d]\n", 2, 14, nCutSize );
    Abc_Print( -2, "\t-C num : max number of cuts at a node (%d <= num <= %d) [default = %d]\n", 2, 256, nCutNum );
    Abc_Print( -2, "\t-t     : toggle truth table computation and cut minimization [default = %s]\n", fTruth? "yes": "no" );
    Abc_Print( -2, "\t-d     : toggle dumping cuts into a text file [default = %s]\n", fDumpText? "yes": "no" );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = %s]\n", fDumpBin? "yes": "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Divide( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManDupSplit( Gia_Man_t * p, int nParts, int nCutLevel );
    int nParts = 2;
    int nCutLevel = 0;
    int c;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "PLvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nParts = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nParts < 2 )
                goto usage;
            break;
        case 'L':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-L\" should be followed by an integer.\n" );
                goto usage;
            }
            nCutLevel = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nCutLevel < 0 )
                goto usage;
            break;
        case 'v':
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Divide(): There is no AIG.\n" );
        return 0;
    }
    Gia_ManDupSplit( pAbc->pGia, nParts, nCutLevel );
    return 0;

usage:
    Abc_Print( -2, "usage: &divide [-P num] [-L num] [-vh]\n" );
    Abc_Print( -2, "\t         divides AIG into N parts at different levels\n" );
    Abc_Print( -2, "\t-P num : number of parts to divide into [default = %d]\n", nParts );
    Abc_Print( -2, "\t-L num : cut level (0 = automatic middle level) [default = %d]\n", nCutLevel );
    Abc_Print( -2, "\t-v     : toggle printing verbose information [default = no]\n" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Pipeline( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupPipeline( Gia_Man_t * p, int nLevels, int fVerbose );
    Gia_Man_t * pGiaNew;
    int nLevels = 20;
    int nDelayMax, c, fVerbose = 0;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "Dvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'D':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-D\" should be followed by a positive integer.\n" );
                goto usage;
            }
            nLevels = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nLevels <= 0 )
                goto usage;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Pipeline(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) > 0 )
    {
        Abc_Print( -1, "Abc_CommandAbc9Pipeline(): This command expects a combinational AIG.\n" );
        return 1;
    }

    pGiaNew = Gia_ManDupPipeline( pAbc->pGia, nLevels, fVerbose );
    if ( pGiaNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Pipeline(): Pipelining has failed.\n" );
        return 1;
    }
    nDelayMax = Gia_ManLevelNum( pGiaNew );
    if ( nDelayMax > nLevels )
    {
        Abc_Print( -1, "Abc_CommandAbc9Pipeline(): Seed pipeline delay (%d) exceeds target D = %d.\n", nDelayMax, nLevels );
        Gia_ManStop( pGiaNew );
        return 1;
    }
    Abc_FrameUpdateGia( pAbc, pGiaNew );
    return 0;

usage:
    Abc_Print( -2, "usage: &pipe [-D num] [-vh]\n" );
    Abc_Print( -2, "\t         inserts pipeline stages\n" );
    Abc_Print( -2, "\t-D num : max AIG levels between the flops [default = %d]\n", nLevels );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Unpipeline( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupUnpipeline( Gia_Man_t * p, int fVerbose );
    Gia_Man_t * pGiaNew;
    int c, fVerbose = 0;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Unpipeline(): There is no AIG.\n" );
        return 1;
    }
    if ( Gia_ManRegNum(pAbc->pGia) == 0 )
    {
        if ( fVerbose )
            Abc_Print( 1, "Abc_CommandAbc9Unpipeline(): The current AIG is already combinational.\n" );
        return 0;
    }

    pGiaNew = Gia_ManDupUnpipeline( pAbc->pGia, fVerbose );
    if ( pGiaNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Unpipeline(): Removing pipeline flops has failed.\n" );
        return 1;
    }
    Abc_FrameUpdateGia( pAbc, pGiaNew );
    return 0;

usage:
    Abc_Print( -2, "usage: &unpipe [-vh]\n" );
    Abc_Print( -2, "\t         removes the flops to derive a combinational AIG\n" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Regio( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern Gia_Man_t * Gia_ManDupRegio( Gia_Man_t * p, int fRegIns, int fRegOuts, int fVerbose );
    Gia_Man_t * pGiaNew;
    int c, fRegIns = 1, fRegOuts = 1, fVerbose = 0;

    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "iovh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'i':
            fRegIns ^= 1;
            break;
        case 'o':
            fRegOuts ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Regio(): There is no AIG.\n" );
        return 1;
    }
    if ( !fRegIns && !fRegOuts )
    {
        if ( fVerbose )
            Abc_Print( 1, "Abc_CommandAbc9Regio(): No boundary flops are requested.\n" );
        return 0;
    }

    pGiaNew = Gia_ManDupRegio( pAbc->pGia, fRegIns, fRegOuts, fVerbose );
    if ( pGiaNew == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Regio(): Adding boundary flops has failed.\n" );
        return 1;
    }
    Abc_FrameUpdateGia( pAbc, pGiaNew );
    return 0;

usage:
    Abc_Print( -2, "usage: &regio [-iovh]\n" );
    Abc_Print( -2, "\t         adds PI/PO flops while preserving the current AIG\n" );
    Abc_Print( -2, "\t-i     : toggle adding PI flops [default = %s]\n", fRegIns ? "yes" : "no" );
    Abc_Print( -2, "\t-o     : toggle adding PO flops [default = %s]\n", fRegOuts ? "yes" : "no" );
    Abc_Print( -2, "\t-v     : toggle verbose output [default = %s]\n", fVerbose ? "yes" : "no" );
    Abc_Print( -2, "\t-h     : print the command usage\n");
    return 1;
}

/**Function*************************************************************

  Synopsis    []

  Description []

  SideEffects []

  SeeAlso     []

***********************************************************************/
int Abc_CommandAbc9Test( Abc_Frame_t * pAbc, int argc, char ** argv )
{
    extern void Gia_ManPrintArray( Gia_Man_t * p );
    extern Gia_Man_t * Gia_ManPerformNewResub( Gia_Man_t * p, int nWinCount, int nCutSize, int nProcs, int fVerbose );
    extern void Gia_RsbEnumerateWindows( Gia_Man_t * p, int nInputsMax, int nLevelsMax );
    extern int Gia_ManSumTotalOfSupportSizes( Gia_Man_t * p );
    extern void Abc_Tt6MinTest2( Gia_Man_t * p );
    int c, fVerbose = 0;
    int nFrames = 5;
    int fSwitch = 0;
    int nWords = 1000;
    int nProcs = 2;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "WPFsvh" ) ) != EOF )
    {
        switch ( c )
        {
        case 'W':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-W\" should be followed by an integer.\n" );
                goto usage;
            }
            nWords = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nWords < 0 )
                goto usage;
            break;
        case 'P':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-P\" should be followed by an integer.\n" );
                goto usage;
            }
            nProcs = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nProcs < 0 )
                goto usage;
            break;
        case 'F':
            if ( globalUtilOptind >= argc )
            {
                Abc_Print( -1, "Command line switch \"-F\" should be followed by an integer.\n" );
                goto usage;
            }
            nFrames = atoi(argv[globalUtilOptind]);
            globalUtilOptind++;
            if ( nFrames < 0 )
                goto usage;
            break;
        case 's':
            fSwitch ^= 1;
            break;
        case 'v':
            fVerbose ^= 1;
            break;
        case 'h':
            goto usage;
        default:
            goto usage;
        }
    }
/*
    Gia_Obj_t * pObj; int i;
    Gia_ManCreateRefs(pAbc->pGia);
    Gia_ManForEachAnd( pAbc->pGia, pObj, i )
        if ( !Gia_ObjIsLut(pAbc->pGia, i) && Gia_ObjRefNum(pAbc->pGia, pObj) > 1 )
            printf( "%d ", Gia_ObjRefNum(pAbc->pGia, pObj) );
    printf( "\n" );
    return 0;
    
    extern void cadical_solver_test();
    cadical_solver_test();
    return 0;
    extern void kissat_solver_test();
    kissat_solver_test();
    return 0;
*/    
    if ( pAbc->pGia == NULL )
    {
        Abc_Print( -1, "Abc_CommandAbc9Test(): There is no AIG.\n" );
        return 1;
    }
    if ( argc == globalUtilOptind + 1 )
    {
        extern void Gia_ManUpdateCoPhase( Gia_Man_t * pNew, Gia_Man_t * pOld );
        Gia_Man_t * pTemp = Gia_AigerRead( argv[globalUtilOptind], 0, 0, 0 );
        Gia_ManUpdateCoPhase( pAbc->pGia, pTemp );
        Gia_ManStop( pTemp );
        return 0;
    }
    //Abc_FrameUpdateGia( pAbc, pNew );
//    printf( "AIG in \"%s\" has the sum of output support sizes equal to %d.\n", pAbc->pGia->pSpec, Gia_ManSumTotalOfSupportSizes(pAbc->pGia) );
    return 0;
usage:
    Abc_Print( -2, "usage: &test [-FW num] [-svh]\n" );
    Abc_Print( -2, "\t        testing various procedures\n" );
    Abc_Print( -2, "\t-F num: the number of timeframes [default = %d]\n", nFrames );
    Abc_Print( -2, "\t-W num: the number of machine words [default = %d]\n", nWords );
    Abc_Print( -2, "\t-s    : toggle enable (yes) vs. disable (no) [default = %s]\n", fSwitch? "yes": "no" );
    Abc_Print( -2, "\t-v    : toggle printing verbose information [default = %s]\n", fVerbose? "yes": "no" );
    Abc_Print( -2, "\t-h    : print the command usage\n");
    return 1;
}

int Abc_CommandAbc9eSLIM( Abc_Frame_t * pAbc, int argc, char ** argv ) {
  extern void seteSLIMParams(eSLIM_ParamStruct* params);
  extern Gia_Man_t* applyeSLIM(Gia_Man_t * pGia, const eSLIM_ParamStruct* params);
  
  eSLIM_ParamStruct params;
  int c;
  Gia_Man_t * pTemp;
  seteSLIMParams(&params);
  params.aig = 1;
  Extra_UtilGetoptReset();
  while ( ( c = Extra_UtilGetopt( argc, argv, "CDIPRSTVWXZcfhistx" ) ) != EOF ) {
      switch ( c ) {
        case 'C':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
              goto usage;
          }
          params.approximate_relation = 1;
          params.relation_tfo_bound  = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.relation_tfo_bound < 0 )
              goto usage;
          if (globalUtilOptind < argc) {
            char *next;
            int tfi_bound = strtol (argv[globalUtilOptind], &next, 10);
            if (argv[globalUtilOptind] != next && *next == '\0') {
              params.generate_relation_with_tfi_limit = 1;
              params.relation_tfi_bound = tfi_bound;
              globalUtilOptind++;
              if (params.relation_tfi_bound < 0) {
                goto usage;
              }
            }
          }
          break;
        case 'D':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
              goto usage;
          }
          params.synthesis_approach = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.synthesis_approach < 0 ||  params.synthesis_approach > 2)
              goto usage;
          break;
        case 'I':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
              goto usage;
          }
          params.iterations = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.iterations < 0 )
              goto usage;
          break;
        case 'P':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-P\" should be followed by a float.\n" );
              goto usage;
          }
          params.expansion_probability = atof(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.expansion_probability <= 0 || params.expansion_probability > 1)
              goto usage;
          break;
        case 'R':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
              goto usage;
          }
          params.nruns = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.nruns < 1 )
              goto usage;
          break;
        case 'S':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
              goto usage;
          }
          params.subcircuit_max_size = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.subcircuit_max_size < 2 )
              goto usage;
          break;
        case 'T':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
              goto usage;
          }
          params.timeout = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.timeout < 1 )
              goto usage;
          break;
        case 'V':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
              goto usage;
          }
          params.verbosity_level = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.verbosity_level < 0 || params.verbosity_level > 3 )
              goto usage;
          break;
        case 'W':
          if ( globalUtilOptind >= argc + 1)
          {
              Abc_Print( -1, "Command line switch \"-W\" should be followed by two integers.\n" );
              goto usage;
          }
          params.nWindows = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if (params.nWindows < 0) 
            goto usage;
          params.window_size = atoi(argv[globalUtilOptind]);
          if (params.window_size <= 0)
            goto usage;
          globalUtilOptind++;
          break;
        case 'X':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-X\" should be followed by an integer.\n" );
              goto usage;
          }
          params.additional_gates = atoi(argv[globalUtilOptind]);
          if ( params.additional_gates < 0 )
              goto usage;
          globalUtilOptind++;
          break;
        case 'Z':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-Z\" should be followed by an integer.\n" );
              goto usage;
          }
          params.fix_seed = 1;
          params.seed = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          break;
        case 'c' :
          params.criticial_path_selection_bias ^= 1;
          break;
        case 'f' :
          params.forward_search ^= 1;
          break;
        case 'h':
          goto usage;
        case 'i' :
          params.apply_inprocessing ^= 1;
          break;
        case 's' :
          params.fill_subcircuits ^= 1;
          break;
        case 't' :
          params.use_taboo_list ^= 1;
          break;
        case 'x' :
          params.aig = 0;
          break;
        default:
          goto usage;
      }
  }
  if (params.nWindows > 0 && params.synthesis_approach != 0) {
    Abc_Print( -1, "Windows can only be used with area minimization\n" );
    return 1;
  }
  if ( pAbc->pGia == NULL ) {
        Abc_Print( -1, "Abc_CommandAbc9Test(): There is no AIG.\n" );
        return 1;
  }

  pTemp = applyeSLIM(pAbc->pGia, &params);
    
  Abc_FrameUpdateGia( pAbc, pTemp );
  return 0;


  usage:
    Abc_Print( -2, "usage: &eslim [-CDIPRSTVWXZ <num>] [-cfhistx]\n" );
    Abc_Print( -2, "\t           circuit optimization using exact synthesis and the SAT-based local improvement method (SLIM)\n" );
    Abc_Print( -2, "\t-C <num> : approximate Boolean relations by only considering the frist C levels in the cone \n");
    Abc_Print( -2, "\t-D <num> : the delay mode to use [default = %d]\n",  params.synthesis_approach );
    Abc_Print( -2, "\t-I <num> : the maximal number of iterations (0 = no limit) for the individual eSLIM runs [default = %d]\n",  params.iterations  );
    Abc_Print( -2, "\t-P <num> : the probability of expanding a node [default = %.2f]\n",    params.expansion_probability );
    Abc_Print( -2, "\t-R <num> : the number of runs of eSLIM + Inprocessing [default = %d]\n",    params.nruns );
    Abc_Print( -2, "\t-S <num> : the maximal size of considered subcircuits [default = %d]\n",    params.subcircuit_max_size );
    Abc_Print( -2, "\t-T <num> : the timeout in seconds for the individual eSLIM runs [default = %d]\n",    params.timeout );
    Abc_Print( -2, "\t-V <num> : the verbosity level [default = %d]\n",       params.verbosity_level);
    Abc_Print( -2, "\t-W <num> <num> : Use m windows of size n [default = %d, %d]\n",       params.nWindows, params.window_size);
    Abc_Print( -2, "\t-X <num> : the maximal number of additional gates that may be used for depth optimization [default = %d]\n", params.additional_gates);
    Abc_Print( -2, "\t-Z <num> : use a fixed seed\n",       params.seed);
    Abc_Print( -2, "\t-c       : toggle bias for selection of nodes on the crictical path\n");
    Abc_Print( -2, "\t-f       : toggle forward expansion of root nodes\n");
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t-i       : toggle inprocessing\n");
    Abc_Print( -2, "\t-s       : toggle fill subcircuits\n");
    Abc_Print( -2, "\t-t       : toggle use taboo list\n");
    Abc_Print( -2, "\t-x       : allow xor-gates\n");
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t           This command was contributed by Franz-Xaver Reichl from University of Freiburg.\n" );

    return 1;

}

int Abc_CommandAbc9elSLIM( Abc_Frame_t * pAbc, int argc, char ** argv ) {
  extern void seteSLIMParams(eSLIM_ParamStruct* params);
  extern Abc_Ntk_t* applyelSLIM(Abc_Ntk_t * pGia, const eSLIM_ParamStruct* params);
  
  eSLIM_ParamStruct params;
  Abc_Ntk_t* pNtk, *pNtknew;
  int c;
  seteSLIMParams(&params);
  Extra_UtilGetoptReset();
  params.subcircuit_max_size = 4;
  while ( ( c = Extra_UtilGetopt( argc, argv, "CDGIPRSTVWXZfhist" ) ) != EOF ) {
      switch ( c ) {
        case 'C':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-C\" should be followed by an integer.\n" );
              goto usage;
          }
          params.approximate_relation = 1;
          params.relation_tfo_bound  = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.relation_tfo_bound < 0 )
              goto usage;
          if (globalUtilOptind < argc) {
            char *next;
            int tfi_bound = strtol (argv[globalUtilOptind], &next, 10);
            if (argv[globalUtilOptind] != next && *next == '\0') {
              params.generate_relation_with_tfi_limit = 1;
              params.relation_tfi_bound = tfi_bound;
              globalUtilOptind++;
              if (params.relation_tfi_bound < 0) {
                goto usage;
              }
            }
          }
          break;
        case 'D':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-D\" should be followed by an integer.\n" );
              goto usage;
          }
          params.synthesis_approach = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.synthesis_approach < 0 ||  params.synthesis_approach > 2)
              goto usage;
          break;
        case 'I':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-I\" should be followed by an integer.\n" );
              goto usage;
          }
          params.iterations = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.iterations < 0 )
              goto usage;
          break;
        case 'G':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-G\" should be followed by an integer.\n" );
              goto usage;
          }
          params.gate_size = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.gate_size < 1 || params.gate_size > 6 )
              goto usage;
          break;
        case 'P':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-P\" should be followed by a float.\n" );
              goto usage;
          }
          params.expansion_probability = atof(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.expansion_probability <= 0 || params.expansion_probability > 1)
              goto usage;
          break;
        case 'R':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-R\" should be followed by an integer.\n" );
              goto usage;
          }
          params.nruns = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.nruns < 1 )
              goto usage;
          break;
        case 'S':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-S\" should be followed by an integer.\n" );
              goto usage;
          }
          params.subcircuit_max_size = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.subcircuit_max_size < 2 )
              goto usage;
          break;
        case 'T':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-T\" should be followed by an integer.\n" );
              goto usage;
          }
          params.timeout = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.timeout < 1 )
              goto usage;
          break;
        case 'V':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-V\" should be followed by an integer.\n" );
              goto usage;
          }
          params.verbosity_level = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if ( params.verbosity_level < 0 || params.verbosity_level > 3 )
              goto usage;
          break;
        case 'W':
          if ( globalUtilOptind >= argc + 1)
          {
              Abc_Print( -1, "Command line switch \"-W\" should be followed by two integers.\n" );
              goto usage;
          }
          params.nWindows = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          if (params.nWindows < 0) 
            goto usage;
          params.window_size = atoi(argv[globalUtilOptind]);
          if (params.window_size <= 0)
            goto usage;
          globalUtilOptind++;
          break;
        case 'X':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-X\" should be followed by an integer.\n" );
              goto usage;
          }
          params.additional_gates = atoi(argv[globalUtilOptind]);
          if ( params.additional_gates < 0 )
              goto usage;
          globalUtilOptind++;
          break;
        case 'Z':
          if ( globalUtilOptind >= argc )
          {
              Abc_Print( -1, "Command line switch \"-Z\" should be followed by an integer.\n" );
              goto usage;
          }
          params.fix_seed = 1;
          params.seed = atoi(argv[globalUtilOptind]);
          globalUtilOptind++;
          break;
        case 'c' :
          params.criticial_path_selection_bias ^= 1;
          break;
        case 'f' :
          params.forward_search ^= 1;
          break;
        case 'h':
          goto usage;
        case 'i' :
          params.apply_inprocessing ^= 1;
          break;
        case 's' :
          params.fill_subcircuits ^= 1;
          break;
        case 't' :
          params.use_taboo_list ^= 1;
          break;
        default:
          goto usage;
      }
  }

  pNtk = Abc_FrameReadNtk(pAbc);
  if ( pNtk == NULL )
  {
    Abc_Print( -1, "Empty network.\n" );
    return 1;
  }
  if ( !Abc_NtkIsLogic(pNtk) )
  {
    Abc_Print( -1, "This command can only be applied to a logic network.\n" );
    return 1;
  }
  if (!Abc_NtkHasSop(pNtk)) {
    Abc_NtkToSop( pNtk, -1, ABC_INFINITY );
  }


  params.aig = 0;
  pNtknew = applyelSLIM(pNtk, &params);
  Abc_FrameReplaceCurrentNetwork( pAbc, pNtknew );
    
  return 0;

  usage:
    Abc_Print( -2, "usage: elslim [-CDGIPRSTVWXZ <num>] [-cfhist]\n" );
    Abc_Print( -2, "\t           Lut optimization using exact synthesis and the SAT-based local improvement method (SLIM)\n" );
    Abc_Print( -2, "\t-C <num> : approximate Boolean relations by only considering the frist C levels in the cone \n");
    Abc_Print( -2, "\t-D <num> : the delay mode to use [default = %d]\n",  params.synthesis_approach );
    Abc_Print( -2, "\t-G <num> : the maximal number of fanins gates may use (at most 6) [default = %d]\n",  params.gate_size  );
    Abc_Print( -2, "\t-I <num> : the maximal number of iterations (0 = no limit) for the individual eSLIM runs [default = %d]\n",  params.iterations  );
    Abc_Print( -2, "\t-P <num> : the probability of expanding a node [default = %.2f]\n",    params.expansion_probability );
    Abc_Print( -2, "\t-R <num> : the number of runs of eSLIM + Inprocessing [default = %d]\n",    params.nruns );
    Abc_Print( -2, "\t-S <num> : the maximal size of considered subcircuits [default = %d]\n",    params.subcircuit_max_size );
    Abc_Print( -2, "\t-T <num> : the timeout in seconds for the individual eSLIM runs [default = %d]\n",    params.timeout );
    Abc_Print( -2, "\t-V <num> : the verbosity level [default = %d]\n",       params.verbosity_level);
    Abc_Print( -2, "\t-W <num> <num> : Use m windows of size n [default = %d, %d]\n",       params.nWindows, params.window_size);
    Abc_Print( -2, "\t-X <num> : the maximal number of additional gates that may be used for depth optimization [default = %d]\n", params.additional_gates);
    Abc_Print( -2, "\t-Z <num> : use a fixed seed\n",       params.seed);
    Abc_Print( -2, "\t-c       : toggle bias for selection of nodes on the crictical path\n");
    Abc_Print( -2, "\t-f       : toggle forward expansion of root nodes\n");
    Abc_Print( -2, "\t-h       : print the command usage\n");
    Abc_Print( -2, "\t-i       : toggle inprocessing\n");
    Abc_Print( -2, "\t-s       : toggle fill subcircuits\n");
    Abc_Print( -2, "\t-t       : toggle use taboo list\n");
    Abc_Print( -2, "\t\n" );
    Abc_Print( -2, "\t           This command was contributed by Franz-Xaver Reichl from University of Freiburg.\n" );

    return 1;

}

int Abc_CommandAbc9CatBtor( Abc_Frame_t * pAbc, int argc, char ** argv ) {
    extern void Abc_BtorCat( char * pFileName, int fVerbose );
  
    int c, fVerbose = 0;
    char * pFileName;
    Extra_UtilGetoptReset();
    while ( ( c = Extra_UtilGetopt( argc, argv, "v" ) ) != EOF )
    {
        switch ( c ) {
        case 'v' :
            fVerbose ^= 1;
            break;
        default:
            goto usage;
        }
    }
    if ( argc == globalUtilOptind + 1 )
        pFileName = argv[globalUtilOptind];
    else
    {
        Abc_Print( -1, "File name is not given on the command line.\n" );
        return 0;
    }

    Abc_BtorCat( pFileName, fVerbose );
    
    return 0;

usage:
    Abc_Print( -2, "usage: &catbtor [-v] <file>\n" );
    Abc_Print( -2, "\t          parse BTOR file and print to stdout.\n" );
    Abc_Print( -2, "\t-v      : toggle printing verbose information\n");
    Abc_Print( -2, "\t<file>  : input BTOR file\n");
    return 1;
}

////////////////////////////////////////////////////////////////////////
///                       END OF FILE                                ///
////////////////////////////////////////////////////////////////////////

#include "abciUnfold2.c"
ABC_NAMESPACE_IMPL_END
