Extending &cec to take a single-output miter (usage of switch -d has changed!).

src/aig/gia/gia.h

@@ -1099,6 +1099,7 @@ extern Gia_Man_t *         Gia_ManDupAndOr( Gia_Man_t * p, int nOuts, int fUseOr
 extern Gia_Man_t *         Gia_ManDupZeroUndc( Gia_Man_t * p, char * pInit, int fVerbose );
 extern Gia_Man_t *         Gia_ManMiter2( Gia_Man_t * p, char * pInit, int fVerbose );
 extern Gia_Man_t *         Gia_ManTransformMiter( Gia_Man_t * p );
+extern Gia_Man_t *         Gia_ManTransformToDual( Gia_Man_t * p );
 extern Gia_Man_t *         Gia_ManChoiceMiter( Vec_Ptr_t * vGias );
 extern Gia_Man_t *         Gia_ManDupWithConstraints( Gia_Man_t * p, Vec_Int_t * vPoTypes );
 extern Gia_Man_t *         Gia_ManDupCones( Gia_Man_t * p, int * pPos, int nPos, int fTrimPis );

src/aig/gia/giaDup.c

@@ -2311,6 +2311,31 @@ Gia_Man_t * Gia_ManTransformMiter( Gia_Man_t * p )
     Gia_ManStop( pTemp );
     return pNew;
 }
+Gia_Man_t * Gia_ManTransformToDual( Gia_Man_t * p )
+{
+    Gia_Man_t * pNew;
+    Gia_Obj_t * pObj;
+    int i;
+    pNew = Gia_ManStart( Gia_ManObjNum(p) );
+    pNew->pName = Abc_UtilStrsav( p->pName );
+    pNew->pSpec = Abc_UtilStrsav( p->pSpec );
+    Gia_ManConst0(p)->Value = 0;
+    Gia_ManHashAlloc( pNew );
+    Gia_ManForEachCi( p, pObj, i )
+        pObj->Value = Gia_ManAppendCi( pNew );
+    Gia_ManForEachAnd( p, pObj, i )
+        pObj->Value = Gia_ManHashAnd( pNew, Gia_ObjFanin0Copy(pObj), Gia_ObjFanin1Copy(pObj) );
+    Gia_ManForEachPo( p, pObj, i )
+    {
+        Gia_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) );
+        Gia_ManAppendCo( pNew, 0 );
+    }
+    Gia_ManForEachRi( p, pObj, i )
+        pObj->Value = Gia_ManAppendCo( pNew, Gia_ObjFanin0Copy(pObj) );
+    Gia_ManHashStop( pNew );
+    Gia_ManSetRegNum( pNew, Gia_ManRegNum(p) );
+    return pNew;
+}
 
 /**Function*************************************************************
 

src/base/abci/abc.c

@@ -30220,11 +30220,10 @@ int Abc_CommandAbc9Cec( Abc_Frame_t * pAbc, int argc, char ** argv )
     Gia_Man_t * pSecond, * pMiter;
     char * FileName, * pTemp;
     char ** pArgvNew;
-    int c, nArgcNew, fMiter = 0;
-    int fDumpMiter = 0;
+    int c, nArgcNew, fMiter = 0, fDualOutput = 0, fDumpMiter = 0;
     Cec_ManCecSetDefaultParams( pPars );
     Extra_UtilGetoptReset();
-    while ( ( c = Extra_UtilGetopt( argc, argv, "CTmdvh" ) ) != EOF )
+    while ( ( c = Extra_UtilGetopt( argc, argv, "CTmdavh" ) ) != EOF )
     {
         switch ( c )
         {
@@ -30254,6 +30253,9 @@ int Abc_CommandAbc9Cec( Abc_Frame_t * pAbc, int argc, char ** argv )
             fMiter ^= 1;
             break;
         case 'd':
+            fDualOutput ^= 1;
+            break;
+        case 'a':
             fDumpMiter ^= 1;
             break;
         case 'v':
@@ -30267,13 +30269,24 @@ int Abc_CommandAbc9Cec( Abc_Frame_t * pAbc, int argc, char ** argv )
     }
     if ( fMiter )
     {
-        if ( Gia_ManPoNum(pAbc->pGia) & 1 )
+        if ( fDualOutput )
         {
-            Abc_Print( -1, "The dual-output miter should have an even number of outputs.\n" );
-            return 1;
+            if ( Gia_ManPoNum(pAbc->pGia) & 1 )
+            {
+                Abc_Print( -1, "The dual-output miter should have an even number of outputs.\n" );
+                return 1;
+            }
+            Abc_Print( 1, "Assuming the current network is a double-output miter. (Conflict limit = %d.)\n", pPars->nBTLimit );
+            pAbc->Status = Cec_ManVerify( pAbc->pGia, pPars );
         }
-        Abc_Print( 1, "Assuming the current network is a double-output miter. (Conflict limit = %d.)\n", pPars->nBTLimit );
-        pAbc->Status = Cec_ManVerify( pAbc->pGia, pPars );
+        else
+        {
+            Gia_Man_t * pTemp;
+            Abc_Print( 1, "Assuming the current network is a single-output miter. (Conflict limit = %d.)\n", pPars->nBTLimit );
+            pTemp = Gia_ManTransformToDual( pAbc->pGia );
+            pAbc->Status = Cec_ManVerify( pTemp, pPars );
+            Gia_ManStop( pTemp );
+        }        
         Abc_FrameReplaceCex( pAbc, &pAbc->pGia->pCexComb );
         return 0;
     }
@@ -30327,12 +30340,13 @@ int Abc_CommandAbc9Cec( Abc_Frame_t * pAbc, int argc, char ** argv )
     return 0;
 
 usage:
-    Abc_Print( -2, "usage: &cec [-CT num] [-mdvh]\n" );
+    Abc_Print( -2, "usage: &cec [-CT num] [-mdavh]\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     : toggle miter vs. two circuits [default = %s]\n", fMiter? "miter":"two circuits");
-    Abc_Print( -2, "\t-d     : toggle dumping dual-output miter [default = %s]\n", fDumpMiter? "yes":"no");
+    Abc_Print( -2, "\t-d     : toggle using dual output miter [default = %s]\n", fDualOutput? "yes":"no");
+    Abc_Print( -2, "\t-a     : toggle writing dual-output miter [default = %s]\n", fDumpMiter? "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;