Added command 'cexcut' and 'cexmerge'.

src/base/abci/abc.c

@@ -22590,11 +22590,12 @@ usage:
 int Abc_CommandCexCut( Abc_Frame_t * pAbc, int argc, char ** argv )
 {
     int c;
-    int iFrStart = 0;
-    int iFrStop  = ABC_INFINITY;
-    int fVerbose = 0;
+    int iFrStart  = 0;
+    int iFrStop   = ABC_INFINITY;
+    int fCombOnly = 0;
+    int fVerbose  = 0;
     Extra_UtilGetoptReset();
-    while ( ( c = Extra_UtilGetopt( argc, argv, "FGvh" ) ) != EOF )
+    while ( ( c = Extra_UtilGetopt( argc, argv, "FGcvh" ) ) != EOF )
     {
         switch ( c )
         {
@@ -22620,6 +22621,9 @@ int Abc_CommandCexCut( Abc_Frame_t * pAbc, int argc, char ** argv )
             if ( iFrStop < 0 )
                 goto usage;
             break;
+        case 'c':
+            fCombOnly ^= 1;
+            break;
         case 'v':
             fVerbose ^= 1;
             break;
@@ -22654,7 +22658,7 @@ int Abc_CommandCexCut( Abc_Frame_t * pAbc, int argc, char ** argv )
         extern Abc_Ntk_t * Abc_NtkFromAigPhase( Aig_Man_t * pMan );
         Abc_Ntk_t * pNtkNew;
         Aig_Man_t * pAig = Abc_NtkToDar( pAbc->pNtkCur, 0, 1 );
-        Aig_Man_t * pAigNew = Bmc_AigTargetStates( pAig, pAbc->pCex, iFrStart, iFrStop, fVerbose );
+        Aig_Man_t * pAigNew = Bmc_AigTargetStates( pAig, pAbc->pCex, iFrStart, iFrStop, fCombOnly, fVerbose );
         Aig_ManStop( pAig );
         if ( pAigNew == NULL )
         {
@@ -22670,10 +22674,11 @@ int Abc_CommandCexCut( Abc_Frame_t * pAbc, int argc, char ** argv )
     return 0;
 
 usage:
-    Abc_Print( -2, "usage: cexcut [-FG num] [-vh]\n" );
+    Abc_Print( -2, "usage: cexcut [-FG num] [-cvh]\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 combinational unate circuit [default = %s]\n",  fCombOnly? "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;
@@ -28810,11 +28815,12 @@ int Abc_CommandAbc9CexCut( Abc_Frame_t * pAbc, int argc, char ** argv )
 {
     Gia_Man_t * pGiaNew;
     int c;
-    int iFrStart = 0;
-    int iFrStop  = ABC_INFINITY;
-    int fVerbose = 0;
+    int iFrStart  = 0;
+    int iFrStop   = ABC_INFINITY;
+    int fCombOnly = 0;
+    int fVerbose  = 0;
     Extra_UtilGetoptReset();
-    while ( ( c = Extra_UtilGetopt( argc, argv, "FGvh" ) ) != EOF )
+    while ( ( c = Extra_UtilGetopt( argc, argv, "FGcvh" ) ) != EOF )
     {
         switch ( c )
         {
@@ -28840,6 +28846,9 @@ int Abc_CommandAbc9CexCut( Abc_Frame_t * pAbc, int argc, char ** argv )
             if ( iFrStop < 0 )
                 goto usage;
             break;
+        case 'c':
+            fCombOnly ^= 1;
+            break;
         case 'v':
             fVerbose ^= 1;
             break;
@@ -28869,7 +28878,7 @@ int Abc_CommandAbc9CexCut( Abc_Frame_t * pAbc, int argc, char ** argv )
     if ( iFrStop == ABC_INFINITY )
         iFrStop = pAbc->pCex->iFrame;
 
-    pGiaNew = Bmc_GiaTargetStates( pAbc->pGia, pAbc->pCex, iFrStart, iFrStop, fVerbose );
+    pGiaNew = Bmc_GiaTargetStates( pAbc->pGia, pAbc->pCex, iFrStart, iFrStop, fCombOnly, fVerbose );
     if ( pGiaNew == NULL )
     {
         Abc_Print( 1, "Command has failed.\n");
@@ -28879,10 +28888,11 @@ int Abc_CommandAbc9CexCut( Abc_Frame_t * pAbc, int argc, char ** argv )
     return 0;
 
 usage:
-    Abc_Print( -2, "usage: &cexcut [-FG num] [-vh]\n" );
+    Abc_Print( -2, "usage: &cexcut [-FG num] [-cvh]\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 producing combinational unate circuit [default = %s]\n",  fCombOnly? "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;

src/sat/bmc/bmc.h

@@ -75,8 +75,8 @@ extern int               Saig_BmcPerform( Aig_Man_t * pAig, int nStart, int nFra
 extern void              Saig_ParBmcSetDefaultParams( Saig_ParBmc_t * p );
 extern int               Saig_ManBmcScalable( Aig_Man_t * pAig, Saig_ParBmc_t * pPars );
 /*=== bmcCexCut.c ==========================================================*/
-extern Gia_Man_t *       Bmc_GiaTargetStates( Gia_Man_t * p, Abc_Cex_t * pCex, int iFrBeg, int iFrEnd, int fVerbose );
-extern Aig_Man_t *       Bmc_AigTargetStates( Aig_Man_t * p, Abc_Cex_t * pCex, int iFrBeg, int iFrEnd, int fVerbose );
+extern Gia_Man_t *       Bmc_GiaTargetStates( Gia_Man_t * p, Abc_Cex_t * pCex, int iFrBeg, int iFrEnd, int fCombOnly, int fVerbose );
+extern Aig_Man_t *       Bmc_AigTargetStates( Aig_Man_t * p, Abc_Cex_t * pCex, int iFrBeg, int iFrEnd, int fCombOnly, int fVerbose );
 /*=== bmcCexMin.c ==========================================================*/
 extern Abc_Cex_t *       Saig_ManCexMinPerform( Aig_Man_t * pAig, Abc_Cex_t * pCex );
 

src/sat/bmc/bmcCexCut.c

@@ -43,7 +43,7 @@ ABC_NAMESPACE_IMPL_START
   SeeAlso     []
 
 ***********************************************************************/
-Gia_Man_t * Bmc_GiaTargetStates( Gia_Man_t * p, Abc_Cex_t * pCex, int iFrBeg, int iFrEnd, int fVerbose )
+Gia_Man_t * Bmc_GiaTargetStates( Gia_Man_t * p, Abc_Cex_t * pCex, int iFrBeg, int iFrEnd, int fCombOnly, int fVerbose )
 {
     Gia_Man_t * pNew, * pTemp;
     Gia_Obj_t * pObj, * pObjRo, * pObjRi;
@@ -141,13 +141,16 @@ Gia_Man_t * Bmc_GiaTargetStates( Gia_Man_t * p, Abc_Cex_t * pCex, int iFrBeg, in
     pNew = Gia_ManCleanup( pTemp = pNew );
     Gia_ManStop( pTemp );
 
-    // create new GIA
-    pNew = Gia_ManDupWithNewPo( p, pTemp = pNew ); 
-    Gia_ManStop( pTemp );
+    if ( !fCombOnly )
+    {
+        // create new GIA
+        pNew = Gia_ManDupWithNewPo( p, pTemp = pNew ); 
+        Gia_ManStop( pTemp );
 
-    // create new initial state
-    pNew = Gia_ManDupFlip( pTemp = pNew, Vec_BitArray(vInitNew) );
-    Gia_ManStop( pTemp );
+        // create new initial state
+        pNew = Gia_ManDupFlip( pTemp = pNew, Vec_BitArray(vInitNew) );
+        Gia_ManStop( pTemp );
+    }
 
     Vec_BitFree( vInitNew );
     return pNew;
@@ -164,18 +167,18 @@ Gia_Man_t * Bmc_GiaTargetStates( Gia_Man_t * p, Abc_Cex_t * pCex, int iFrBeg, in
   SeeAlso     []
 
 ***********************************************************************/
-Aig_Man_t * Bmc_AigTargetStates( Aig_Man_t * p, Abc_Cex_t * pCex, int iFrBeg, int iFrEnd, int fVerbose )
+Aig_Man_t * Bmc_AigTargetStates( Aig_Man_t * p, Abc_Cex_t * pCex, int iFrBeg, int iFrEnd, int fCombOnly, int fVerbose )
 {
     Aig_Man_t * pAig;
     Gia_Man_t * pGia, * pRes;
     pGia = Gia_ManFromAigSimple( p );
     if ( !Gia_ManVerifyCex( pGia, pCex, 0 ) )
     {
-        Abc_Print( 1, "Current CEX does not fail AIG \"%s\".\n", p->pName );
+        Abc_Print( 1, "Current CEX does not fail AIG \"%s\".\n", p->pName ); 
         Gia_ManStop( pGia );
         return NULL;
     }
-    pRes = Bmc_GiaTargetStates( pGia, pCex, iFrBeg, iFrEnd, fVerbose );
+    pRes = Bmc_GiaTargetStates( pGia, pCex, iFrBeg, iFrEnd, fCombOnly, fVerbose );
     pAig = Gia_ManToAigSimple( pRes );
     Gia_ManStop( pGia );
     Gia_ManStop( pRes );