%pdra, %abs: added option -d for apple-to-apple comparison

src/base/wlc/wlc.h

@@ -178,6 +178,7 @@ struct Wlc_Par_t_
     int                    fProofRefine;       // Use proof-based refinement
     int                    fHybrid;            // Use a hybrid of CBR and PBR
     int                    fCheckCombUnsat;    // Check if ABS becomes comb. unsat
+    int                    fAbs2;              // Use UFAR style createAbs
     int                    fVerbose;           // verbose output
     int                    fPdrVerbose;        // verbose output
 };

src/base/wlc/wlcAbs.c

@@ -1060,7 +1060,7 @@ int Wlc_NtkPdrAbs( Wlc_Ntk_t * p, Wlc_Par_t * pPars )
             printf( "\nIteration %d:\n", nIters );
 
         // get abstracted GIA and the set of pseudo-PIs (vPisNew)
-        if ( pPars->fProofRefine )
+        if ( pPars->fAbs2 || pPars->fProofRefine )
         {
             if ( vBlacks == NULL )
                 vBlacks = Wlc_NtkGetBlacks( p, pPars );
@@ -1352,14 +1352,28 @@ int Wlc_NtkAbsCore( Wlc_Ntk_t * p, Wlc_Par_t * pPars )
         Vec_Int_t * vPisNew, * vRefine;  
         Gia_Man_t * pGia, * pTemp;
         Wlc_Ntk_t * pAbs;
+        Vec_Int_t * vBlacks = NULL;
 
         if ( pPars->fVerbose )
             printf( "\nIteration %d:\n", nIters );
 
         // get abstracted GIA and the set of pseudo-PIs (vPisNew)
+        if ( pPars->fAbs2 )
+        {
+            if ( vBlacks == NULL )
+                vBlacks = Wlc_NtkGetBlacks( p, pPars );
+            else
+                Wlc_NtkUpdateBlacks( p, pPars, &vBlacks, vUnmark );
+            pAbs = Wlc_NtkAbs2( p, vBlacks, NULL );
+            vPisNew = Vec_IntDup( vBlacks );
+        }
+        else
+        {
             if ( nIters == 1 && pPars->nLimit < ABC_INFINITY )
                 Wlc_NtkSetUnmark( p, pPars, vUnmark );
+
             pAbs = Wlc_NtkAbs( p, pPars, vUnmark, &vPisNew, NULL, pPars->fVerbose );
+        }
         pGia = Wlc_NtkBitBlast( pAbs, NULL, -1, 0, 0, 0, 0 );
 
         // if the abstraction has flops with DC-init state,

src/base/wlc/wlcCom.c

@@ -462,7 +462,7 @@ int Abc_CommandPdrAbs( Abc_Frame_t * pAbc, int argc, char ** argv )
     int c;
     Wlc_ManSetDefaultParams( pPars );
     Extra_UtilGetoptReset();
-    while ( ( c = Extra_UtilGetopt( argc, argv, "AMXFILabrcpmuxvwh" ) ) != EOF )
+    while ( ( c = Extra_UtilGetopt( argc, argv, "AMXFILabrcdpmuxvwh" ) ) != EOF )
     {
         switch ( c )
         {
@@ -547,6 +547,9 @@ int Abc_CommandPdrAbs( Abc_Frame_t * pAbc, int argc, char ** argv )
         case 'c':
             pPars->fCheckClauses ^= 1;
             break;
+        case 'd':
+            pPars->fAbs2 ^= 1;
+            break;
         case 'p':
             pPars->fPushClauses ^= 1;
             break;
@@ -576,7 +579,7 @@ int Abc_CommandPdrAbs( Abc_Frame_t * pAbc, int argc, char ** argv )
     Wlc_NtkPdrAbs( pNtk, pPars );
     return 0;
 usage:
-    Abc_Print( -2, "usage: %%pdra [-AMXFIL num] [-abrcpmxuvwh]\n" );
+    Abc_Print( -2, "usage: %%pdra [-AMXFIL num] [-abrcdpmxuvwh]\n" );
     Abc_Print( -2, "\t         abstraction for word-level networks\n" );
     Abc_Print( -2, "\t-A num : minimum bit-width of an adder/subtractor to abstract [default = %d]\n", pPars->nBitsAdd );
     Abc_Print( -2, "\t-M num : minimum bit-width of a multiplier to abstract [default = %d]\n",        pPars->nBitsMul );
@@ -589,6 +592,7 @@ usage:
     Abc_Print( -2, "\t-b     : toggle using proof-based refinement [default = %s]\n",                  pPars->fProofRefine? "yes": "no" );
     Abc_Print( -2, "\t-r     : toggle using both cex-based and proof-based refinement [default = %s]\n",                  pPars->fHybrid? "yes": "no" );
     Abc_Print( -2, "\t-c     : toggle checking clauses in the reloaded trace [default = %s]\n",        pPars->fCheckClauses? "yes": "no" );
+    Abc_Print( -2, "\t-d     : toggle using another way of creating abstractions [default = %s]\n",    pPars->fAbs2? "yes": "no" );
     Abc_Print( -2, "\t-u     : toggle checking combinationally unsat [default = %s]\n",                pPars->fCheckCombUnsat? "yes": "no" );
     Abc_Print( -2, "\t-p     : toggle pushing clauses in the reloaded trace [default = %s]\n",         pPars->fPushClauses? "yes": "no" );
     Abc_Print( -2, "\t-m     : toggle refining the whole MFFC of a PPI [default = %s]\n",              pPars->fMFFC? "yes": "no" );
@@ -617,7 +621,7 @@ int Abc_CommandAbs( Abc_Frame_t * pAbc, int argc, char ** argv )
     int c;
     Wlc_ManSetDefaultParams( pPars );
     Extra_UtilGetoptReset();
-    while ( ( c = Extra_UtilGetopt( argc, argv, "AMXFILxvwh" ) ) != EOF )
+    while ( ( c = Extra_UtilGetopt( argc, argv, "AMXFILdxvwh" ) ) != EOF )
     {
         switch ( c )
         {
@@ -687,6 +691,9 @@ int Abc_CommandAbs( Abc_Frame_t * pAbc, int argc, char ** argv )
             if ( pPars->nLimit < 0 )
                 goto usage;
             break;
+        case 'd':
+            pPars->fAbs2 ^= 1;
+            break;
         case 'x':
             pPars->fXorOutput ^= 1;
             break;
@@ -710,7 +717,7 @@ int Abc_CommandAbs( Abc_Frame_t * pAbc, int argc, char ** argv )
     Wlc_NtkAbsCore( pNtk, pPars );
     return 0;
 usage:
-    Abc_Print( -2, "usage: %%abs [-AMXFIL num] [-xvwh]\n" );
+    Abc_Print( -2, "usage: %%abs [-AMXFIL num] [-dxvwh]\n" );
     Abc_Print( -2, "\t         abstraction for word-level networks\n" );
     Abc_Print( -2, "\t-A num : minimum bit-width of an adder/subtractor to abstract [default = %d]\n", pPars->nBitsAdd );
     Abc_Print( -2, "\t-M num : minimum bit-width of a multiplier to abstract [default = %d]\n",        pPars->nBitsMul );
@@ -718,6 +725,7 @@ usage:
     Abc_Print( -2, "\t-F num : minimum bit-width of a flip-flop to abstract [default = %d]\n",         pPars->nBitsFlop );
     Abc_Print( -2, "\t-I num : maximum number of CEGAR iterations [default = %d]\n",                   pPars->nIterMax );
     Abc_Print( -2, "\t-L num : maximum number of each type of signals [default = %d]\n",               pPars->nLimit );
+    Abc_Print( -2, "\t-d     : toggle using another way of creating abstractions [default = %s]\n",    pPars->fAbs2? "yes": "no" );
     Abc_Print( -2, "\t-x     : toggle XORing outputs of word-level miter [default = %s]\n",            pPars->fXorOutput? "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 PDR output [default = %s]\n",                   pPars->fPdrVerbose? "yes": "no" );

src/base/wlc/wlcNtk.c

@@ -122,6 +122,7 @@ void Wlc_ManSetDefaultParams( Wlc_Par_t * pPars )
     pPars->fProofRefine  =            0;   // Use proof-based refinement
     pPars->fHybrid       =            1;   // Use a hybrid of CBR and PBR
     pPars->fCheckCombUnsat =          0;   // Check if ABS becomes comb. unsat
+    pPars->fAbs2         =            0;   // Use UFAR style createAbs
     pPars->fVerbose      =            0;   // verbose output`
     pPars->fPdrVerbose   =            0;   // show verbose PDR output
 }