Experiments with new network data-structure.

1 files changed, 731 insertions, 0 deletions

diff --git a/src/base/acb/acbCom.c b/src/base/acb/acbCom.c
new file mode 100644
index 00000000..a9b06c6d
--- /dev/null
+++ b/src/base/acb/acbCom.c
@@ -0,0 +1,731 @@
+/**CFile****************************************************************
+
+  FileName    [acbCom.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [Hierarchical word-level netlist.]
+
+  Synopsis    [Command handlers.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - November 29, 2014.]
+
+  Revision    [$Id: acbCom.c,v 1.00 2014/11/29 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "acb.h"
+#include "proof/cec/cec.h"
+#include "base/main/mainInt.h"
+
+ABC_NAMESPACE_IMPL_START
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+static int  Acb_CommandRead     ( Abc_Frame_t * pAbc, int argc, char ** argv );
+static int  Acb_CommandWrite    ( Abc_Frame_t * pAbc, int argc, char ** argv );
+static int  Acb_CommandPs       ( Abc_Frame_t * pAbc, int argc, char ** argv );
+static int  Acb_CommandPut      ( Abc_Frame_t * pAbc, int argc, char ** argv );
+static int  Acb_CommandGet      ( Abc_Frame_t * pAbc, int argc, char ** argv );
+static int  Acb_CommandClp      ( Abc_Frame_t * pAbc, int argc, char ** argv );
+static int  Acb_CommandBlast    ( Abc_Frame_t * pAbc, int argc, char ** argv );
+static int  Acb_CommandCec      ( Abc_Frame_t * pAbc, int argc, char ** argv );
+static int  Acb_CommandTest     ( Abc_Frame_t * pAbc, int argc, char ** argv );
+
+static inline Acb_Man_t * Acb_AbcGetMan( Abc_Frame_t * pAbc )                   { return (Acb_Man_t *)pAbc->pAbcCba;                        }
+static inline void        Acb_AbcFreeMan( Abc_Frame_t * pAbc )                  { if ( pAbc->pAbcCba ) Acb_ManFree(Acb_AbcGetMan(pAbc));    }
+static inline void        Acb_AbcUpdateMan( Abc_Frame_t * pAbc, Acb_Man_t * p ) { Acb_AbcFreeMan(pAbc); pAbc->pAbcCba = p;                  }
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+/**Function********************************************************************
+
+  Synopsis    []
+
+  Description []
+
+  SideEffects []
+
+  SeeAlso     []
+
+******************************************************************************/
+void Acb_Init( Abc_Frame_t * pAbc )
+{
+    Cmd_CommandAdd( pAbc, "New word level", "@read",       Acb_CommandRead,      0 );
+    Cmd_CommandAdd( pAbc, "New word level", "@write",      Acb_CommandWrite,     0 );
+    Cmd_CommandAdd( pAbc, "New word level", "@ps",         Acb_CommandPs,        0 );
+    Cmd_CommandAdd( pAbc, "New word level", "@put",        Acb_CommandPut,       0 );
+    Cmd_CommandAdd( pAbc, "New word level", "@get",        Acb_CommandGet,       0 );
+    Cmd_CommandAdd( pAbc, "New word level", "@clp",        Acb_CommandClp,       0 );
+    Cmd_CommandAdd( pAbc, "New word level", "@blast",      Acb_CommandBlast,     0 );
+    Cmd_CommandAdd( pAbc, "New word level", "@cec",        Acb_CommandCec,       0 );
+    Cmd_CommandAdd( pAbc, "New word level", "@test",       Acb_CommandTest,      0 );
+}
+
+/**Function********************************************************************
+
+  Synopsis    []
+
+  Description []
+
+  SideEffects []
+
+  SeeAlso     []
+
+******************************************************************************/
+void Acb_End( Abc_Frame_t * pAbc )
+{
+    Acb_AbcFreeMan( pAbc );
+}
+
+
+/**Function********************************************************************
+
+  Synopsis    []
+
+  Description []
+
+  SideEffects []
+
+  SeeAlso     []
+
+******************************************************************************/
+int Acb_CommandRead( Abc_Frame_t * pAbc, int argc, char ** argv )
+{
+    FILE * pFile;
+    Acb_Man_t * p = NULL;
+    char * pFileName = NULL;
+    int c, fTest = 0, fDfs = 0, fVerbose = 0;
+    Extra_UtilGetoptReset();
+    while ( ( c = Extra_UtilGetopt( argc, argv, "tdvh" ) ) != EOF )
+    {
+        switch ( c )
+        {
+        case 't':
+            fTest ^= 1;
+            break;
+        case 'd':
+            fDfs ^= 1;
+            break;
+        case 'v':
+            fVerbose ^= 1;
+            break;
+        case 'h':
+            goto usage;
+        default:
+            goto usage;
+        }
+    }
+    if ( argc != globalUtilOptind + 1 )
+    {
+        printf( "Acb_CommandRead(): Input file name should be given on the command line.\n" );
+        return 0;
+    }
+        // get the file name
+    pFileName = argv[globalUtilOptind];
+    if ( (pFile = fopen( pFileName, "r" )) == NULL )
+    {
+        Abc_Print( 1, "Cannot open input file \"%s\". ", pFileName );
+        if ( (pFileName = Extra_FileGetSimilarName( pFileName, ".v", ".blif", ".smt", ".acb", NULL )) )
+            Abc_Print( 1, "Did you mean \"%s\"?", pFileName );
+        Abc_Print( 1, "\n" );
+        return 0;
+    }
+    fclose( pFile );
+    if ( fTest )
+    {
+        if ( !strcmp( Extra_FileNameExtension(pFileName), "blif" )  )
+            Prs_ManReadBlifTest( pFileName );
+        else if ( !strcmp( Extra_FileNameExtension(pFileName), "v" )  )
+            Prs_ManReadVerilogTest( pFileName );
+        else 
+        {
+            printf( "Unrecognized input file extension.\n" );
+            return 0;
+        }
+        return 0;
+    }
+    if ( !strcmp( Extra_FileNameExtension(pFileName), "blif" )  )
+        p = Acb_ManReadBlif( pFileName );
+    else if ( !strcmp( Extra_FileNameExtension(pFileName), "v" )  )
+        p = Acb_ManReadVerilog( pFileName );
+    else if ( !strcmp( Extra_FileNameExtension(pFileName), "acb" )  )
+        p = Acb_ManReadCba( pFileName );
+    else 
+    {
+        printf( "Unrecognized input file extension.\n" );
+        return 0;
+    }
+    if ( fDfs )
+    {
+        Acb_Man_t * pTemp;
+        p = Acb_ManDup( pTemp = p, Acb_NtkCollectDfs );
+        Acb_ManFree( pTemp );
+    }
+    Acb_AbcUpdateMan( pAbc, p );
+    return 0;
+usage:
+    Abc_Print( -2, "usage: @read [-tdvh] <file_name>\n" );
+    Abc_Print( -2, "\t         reads hierarchical design\n" );
+    Abc_Print( -2, "\t-t     : toggle testing the parser [default = %s]\n", fTest? "yes": "no" );
+    Abc_Print( -2, "\t-d     : toggle computing DFS ordering [default = %s]\n", fDfs? "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 Acb_CommandWrite( Abc_Frame_t * pAbc, int argc, char ** argv )
+{
+    Acb_Man_t * p = Acb_AbcGetMan(pAbc);
+    char * pFileName = NULL;
+    int fInclineCats =    0;
+    int c, fVerbose  =    0;
+    Extra_UtilGetoptReset();
+    while ( ( c = Extra_UtilGetopt( argc, argv, "cvh" ) ) != EOF )
+    {
+        switch ( c )
+        {
+        case 'c':
+            fInclineCats ^= 1;
+            break;
+        case 'v':
+            fVerbose ^= 1;
+            break;
+        case 'h':
+            goto usage;
+        default:
+            goto usage;
+        }
+    }
+    if ( p == NULL )
+    {
+        Abc_Print( 1, "Acb_CommandWrite(): There is no current design.\n" );
+        return 0;
+    }
+
+    if ( argc == globalUtilOptind + 1 )
+        pFileName = argv[globalUtilOptind];
+    else if ( argc == globalUtilOptind && p )
+    {
+        pFileName = Extra_FileNameGenericAppend( Acb_ManSpec(p) ? Acb_ManSpec(p) : Acb_ManName(p), "_out.v" );
+        printf( "Generated output file name \"%s\".\n", pFileName );
+    }
+    else 
+    {
+        printf( "Output file name should be given on the command line.\n" );
+        return 0;
+    }
+    // perform writing
+    if ( !strcmp( Extra_FileNameExtension(pFileName), "blif" )  )
+        Acb_ManWriteBlif( pFileName, p );
+    else if ( !strcmp( Extra_FileNameExtension(pFileName), "v" )  )
+        Acb_ManWriteVerilog( pFileName, p, fInclineCats );
+    else if ( !strcmp( Extra_FileNameExtension(pFileName), "acb" )  )
+        Acb_ManWriteCba( pFileName, p );
+    else 
+    {
+        printf( "Unrecognized output file extension.\n" );
+        return 0;
+    }
+    return 0;
+usage:
+    Abc_Print( -2, "usage: @write [-cvh]\n" );
+    Abc_Print( -2, "\t         writes the design into a file in BLIF or Verilog\n" );
+    Abc_Print( -2, "\t-c     : toggle inlining input concatenations [default = %s]\n",  fInclineCats? "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 Acb_CommandPs( Abc_Frame_t * pAbc, int argc, char ** argv )
+{
+    Acb_Man_t * p = Acb_AbcGetMan(pAbc);
+    int nModules     = 0;
+    int fShowMulti   = 0;
+    int fShowAdder   = 0;
+    int fDistrib     = 0;
+    int c, fVerbose  = 0;
+    Extra_UtilGetoptReset();
+    while ( ( c = Extra_UtilGetopt( argc, argv, "Mmadvh" ) ) != EOF )
+    {
+        switch ( c )
+        {
+        case 'M':
+            if ( globalUtilOptind >= argc )
+            {
+                Abc_Print( -1, "Command line switch \"-M\" should be followed by an integer.\n" );
+                goto usage;
+            }
+            nModules = atoi(argv[globalUtilOptind]);
+            globalUtilOptind++;
+            if ( nModules < 0 )
+                goto usage;
+            break;
+        case 'm':
+            fShowMulti ^= 1;
+            break;
+        case 'a':
+            fShowAdder ^= 1;
+            break;
+        case 'd':
+            fDistrib ^= 1;
+            break;
+        case 'v':
+            fVerbose ^= 1;
+            break;
+        case 'h':
+            goto usage;
+        default:
+            goto usage;
+        }
+    }
+    if ( p == NULL )
+    {
+        Abc_Print( 1, "Acb_CommandPs(): There is no current design.\n" );
+        return 0;
+    }
+    if ( nModules )
+    {
+        Acb_ManPrintStats( p, nModules, fVerbose );
+        return 0;
+    }
+    Acb_NtkPrintStatsFull( Acb_ManRoot(p), fDistrib, fVerbose );
+    if ( fShowMulti )
+        Acb_NtkPrintNodes( Acb_ManRoot(p), ABC_OPER_ARI_MUL );
+    if ( fShowAdder )
+        Acb_NtkPrintNodes( Acb_ManRoot(p), ABC_OPER_ARI_ADD );
+    return 0;
+usage:
+    Abc_Print( -2, "usage: @ps [-M num] [-madvh]\n" );
+    Abc_Print( -2, "\t         prints statistics\n" );
+    Abc_Print( -2, "\t-M num : the number of first modules to report [default = %d]\n", nModules );
+    Abc_Print( -2, "\t-m     : toggle printing multipliers [default = %s]\n",         fShowMulti? "yes": "no" );
+    Abc_Print( -2, "\t-a     : toggle printing adders [default = %s]\n",              fShowAdder? "yes": "no" );
+    Abc_Print( -2, "\t-d     : toggle printing distrubition [default = %s]\n",        fDistrib? "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 Acb_CommandPut( Abc_Frame_t * pAbc, int argc, char ** argv )
+{
+    Acb_Man_t * p = Acb_AbcGetMan(pAbc);
+    Gia_Man_t * pGia = NULL;
+    int c, fBarBufs = 1, fSeq = 0, fVerbose  = 0;
+    Extra_UtilGetoptReset();
+    while ( ( c = Extra_UtilGetopt( argc, argv, "bsvh" ) ) != EOF )
+    {
+        switch ( c )
+        {
+        case 'b':
+            fBarBufs ^= 1;
+            break;
+        case 's':
+            fSeq ^= 1;
+            break;
+        case 'v':
+            fVerbose ^= 1;
+            break;
+        case 'h':
+            goto usage;
+        default:
+            goto usage;
+        }
+    }
+    if ( p == NULL )
+    {
+        Abc_Print( 1, "Acb_CommandPut(): There is no current design.\n" );
+        return 0;
+    }
+    pGia = Acb_ManBlast( p, fBarBufs, fSeq, fVerbose );
+    if ( pGia == NULL )
+    {
+        Abc_Print( 1, "Acb_CommandPut(): Conversion to AIG has failed.\n" );
+        return 0;
+    }
+    Abc_FrameUpdateGia( pAbc, pGia );
+    return 0;
+usage:
+    Abc_Print( -2, "usage: @put [-bsvh]\n" );
+    Abc_Print( -2, "\t         extracts AIG from the hierarchical design\n" );
+    Abc_Print( -2, "\t-b     : toggle using barrier buffers [default = %s]\n", fBarBufs? "yes": "no" );
+    Abc_Print( -2, "\t-s     : toggle blasting sequential elements [default = %s]\n", fSeq? "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 Acb_CommandGet( Abc_Frame_t * pAbc, int argc, char ** argv )
+{
+    Acb_Man_t * pNew = NULL, * p = Acb_AbcGetMan(pAbc);
+    int c, fMapped = 0, fVerbose  = 0;
+    Extra_UtilGetoptReset();
+    while ( ( c = Extra_UtilGetopt( argc, argv, "mvh" ) ) != EOF )
+    {
+        switch ( c )
+        {
+        case 'm':
+            fMapped ^= 1;
+            break;
+        case 'v':
+            fVerbose ^= 1;
+            break;
+        case 'h':
+            goto usage;
+        default:
+            goto usage;
+        }
+    }
+    if ( p == NULL )
+    {
+        Abc_Print( 1, "Acb_CommandGet(): There is no current design.\n" );
+        return 0;
+    }
+
+    if ( fMapped )
+    {
+        if ( pAbc->pNtkCur == NULL )
+        {
+            Abc_Print( 1, "Acb_CommandGet(): There is no current mapped design.\n" );
+            return 0;
+        }
+        pNew = Acb_ManInsertAbc( p, pAbc->pNtkCur );
+    }
+    else
+    {
+        if ( pAbc->pGia == NULL )
+        {
+            Abc_Print( 1, "Acb_CommandGet(): There is no current AIG.\n" );
+            return 0;
+        }
+        pNew = Acb_ManInsertGia( p, pAbc->pGia );
+    }
+    Acb_AbcUpdateMan( pAbc, pNew );
+    return 0;
+usage:
+    Abc_Print( -2, "usage: @get [-mvh]\n" );
+    Abc_Print( -2, "\t         extracts AIG or mapped network into the hierarchical design\n" );
+    Abc_Print( -2, "\t-m     : toggle using mapped network from main-space [default = %s]\n", fMapped? "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 Acb_CommandClp( Abc_Frame_t * pAbc, int argc, char ** argv )
+{
+    Acb_Man_t * pNew = NULL, * p = Acb_AbcGetMan(pAbc);
+    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 ( p == NULL )
+    {
+        Abc_Print( 1, "Acb_CommandGet(): There is no current design.\n" );
+        return 0;
+    }
+    pNew = Acb_ManCollapse( p );
+    Acb_AbcUpdateMan( pAbc, pNew );
+    return 0;
+usage:
+    Abc_Print( -2, "usage: @clp [-vh]\n" );
+    Abc_Print( -2, "\t         collapses the current hierarchical 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");
+    return 1;
+}
+
+/**Function********************************************************************
+
+  Synopsis    []
+
+  Description []
+
+  SideEffects []
+
+  SeeAlso     []
+
+******************************************************************************/
+int Acb_CommandBlast( Abc_Frame_t * pAbc, int argc, char ** argv )
+{
+    Gia_Man_t * pNew = NULL;
+    Acb_Man_t * p = Acb_AbcGetMan(pAbc);
+    int c, 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;
+        case 'h':
+            goto usage;
+        default:
+            goto usage;
+        }
+    }
+    if ( p == NULL )
+    {
+        Abc_Print( 1, "Acb_CommandBlast(): There is no current design.\n" );
+        return 0;
+    }
+    pNew = Acb_ManBlast( p, 0, fSeq, fVerbose );
+    if ( pNew == NULL )
+    {
+        Abc_Print( 1, "Acb_CommandBlast(): Bit-blasting has failed.\n" );
+        return 0;
+    }
+    Abc_FrameUpdateGia( pAbc, pNew );
+    return 0;
+usage:
+    Abc_Print( -2, "usage: @blast [-svh]\n" );
+    Abc_Print( -2, "\t         performs bit-blasting of the word-level design\n" );
+    Abc_Print( -2, "\t-s     : toggle blasting sequential elements [default = %s]\n", fSeq? "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 Acb_CommandCec( Abc_Frame_t * pAbc, int argc, char ** argv )
+{
+    Acb_Man_t * p = Acb_AbcGetMan(pAbc), * pTemp;
+    Gia_Man_t * pFirst, * pSecond, * pMiter;
+    Cec_ParCec_t ParsCec, * pPars = &ParsCec;
+    char * pFileName, * pStr, ** pArgvNew;
+    int c, nArgcNew, fDumpMiter = 0;
+    FILE * pFile;
+    Cec_ManCecSetDefaultParams( pPars );
+    Extra_UtilGetoptReset();
+    while ( ( c = Extra_UtilGetopt( argc, argv, "vh" ) ) != EOF )
+    {
+        switch ( c )
+        {
+        case 'v':
+            pPars->fVerbose ^= 1;
+            break;
+        case 'h':
+            goto usage;
+        default:
+            goto usage;
+        }
+    }
+    if ( p == NULL )
+    {
+        Abc_Print( 1, "Acb_CommandCec(): There is no current design.\n" );
+        return 0;
+    }
+
+    pArgvNew = argv + globalUtilOptind;
+    nArgcNew = argc - globalUtilOptind;
+    if ( nArgcNew != 1 )
+    {
+        if ( p->pSpec == NULL )
+        {
+            Abc_Print( -1, "File name is not given on the command line.\n" );
+            return 1;
+        }
+        pFileName = p->pSpec;
+    }
+    else
+        pFileName = pArgvNew[0];
+    // fix the wrong symbol
+    for ( pStr = pFileName; *pStr; pStr++ )
+        if ( *pStr == '>' )
+            *pStr = '\\';
+    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 );
+
+    // extract AIG from the current design
+    pFirst = Acb_ManBlast( p, 0, 0, 0 );
+    if ( pFirst == NULL )
+    {
+        Abc_Print( -1, "Extracting AIG from the current design has failed.\n" );
+        return 0;
+    }
+    // extract AIG from the second design
+
+    if ( !strcmp( Extra_FileNameExtension(pFileName), "blif" )  )
+        pTemp = Acb_ManReadBlif( pFileName );
+    else if ( !strcmp( Extra_FileNameExtension(pFileName), "v" )  )
+        pTemp = Acb_ManReadVerilog( pFileName );
+    else if ( !strcmp( Extra_FileNameExtension(pFileName), "acb" )  )
+        pTemp = Acb_ManReadCba( pFileName );
+    else assert( 0 );
+    pSecond = Acb_ManBlast( pTemp, 0, 0, 0 );
+    Acb_ManFree( pTemp );
+    if ( pSecond == NULL )
+    {
+        Gia_ManStop( pFirst );
+        Abc_Print( -1, "Extracting AIG from the original design has failed.\n" );
+        return 0;
+    }
+    // compute the miter
+    pMiter = Gia_ManMiter( pFirst, pSecond, 0, 1, 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 );
+        }
+        pAbc->Status = Cec_ManVerify( pMiter, pPars );
+        //Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexComb );
+        Gia_ManStop( pMiter );
+    }
+    Gia_ManStop( pFirst );
+    Gia_ManStop( pSecond );
+    return 0;
+usage:
+    Abc_Print( -2, "usage: @cec [-vh]\n" );
+    Abc_Print( -2, "\t         combinational equivalence checking\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");
+    return 1;
+}
+
+/**Function********************************************************************
+
+  Synopsis    []
+
+  Description []
+
+  SideEffects []
+
+  SeeAlso     []
+
+******************************************************************************/
+int Acb_CommandTest( Abc_Frame_t * pAbc, int argc, char ** argv )
+{
+    Acb_Man_t * p = Acb_AbcGetMan(pAbc);
+    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 ( p == NULL )
+    {
+        Abc_Print( 1, "Acb_CommandTest(): There is no current design.\n" );
+        return 0;
+    }
+    return 0;
+usage:
+    Abc_Print( -2, "usage: @test [-vh]\n" );
+    Abc_Print( -2, "\t         experiments with word-level networks\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;
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+