3 files changed, 48 insertions, 1 deletions
diff --git a/src/misc/vec/vecInt.h b/src/misc/vec/vecInt.h
index f09b8783..d952518f 100644
--- a/src/misc/vec/vecInt.h
+++ b/src/misc/vec/vecInt.h
@@ -1692,6 +1692,24 @@ static inline int Vec_IntTwoFindCommon( Vec_Int_t * vArr1, Vec_Int_t * vArr2, Ve
     }
     return Vec_IntSize(vArr);
 }
+static inline int Vec_IntTwoFindCommonReverse( Vec_Int_t * vArr1, Vec_Int_t * vArr2, Vec_Int_t * vArr )
+{
+    int * pBeg1 = vArr1->pArray;
+    int * pBeg2 = vArr2->pArray;
+    int * pEnd1 = vArr1->pArray + vArr1->nSize;
+    int * pEnd2 = vArr2->pArray + vArr2->nSize;
+    Vec_IntClear( vArr );
+    while ( pBeg1 < pEnd1 && pBeg2 < pEnd2 )
+    {
+        if ( *pBeg1 == *pBeg2 )
+            Vec_IntPush( vArr, *pBeg1 ), pBeg1++, pBeg2++;
+        else if ( *pBeg1 > *pBeg2 )
+            pBeg1++;
+        else 
+            pBeg2++;
+    }
+    return Vec_IntSize(vArr);
+}
 
 /**Function*************************************************************
 
diff --git a/src/misc/vec/vecPtr.h b/src/misc/vec/vecPtr.h
index 5b40665f..015aa1be 100644
--- a/src/misc/vec/vecPtr.h
+++ b/src/misc/vec/vecPtr.h
@@ -65,7 +65,7 @@ struct Vec_Ptr_t_
 #define Vec_PtrForEachEntryTwo( Type1, vVec1, Type2, vVec2, pEntry1, pEntry2, i )                  \
     for ( i = 0; (i < Vec_PtrSize(vVec1)) && (((pEntry1) = (Type1)Vec_PtrEntry(vVec1, i)), 1) && (((pEntry2) = (Type2)Vec_PtrEntry(vVec2, i)), 1); i++ )
 #define Vec_PtrForEachEntryDouble( Type1, Type2, vVec, Entry1, Entry2, i )                                \
-    for ( i = 0; (i+1 < Vec_IntSize(vVec)) && (((Entry1) = (Type1)Vec_PtrEntry(vVec, i)), 1) && (((Entry2) = (Type2)Vec_PtrEntry(vVec, i+1)), 1); i += 2 )
+    for ( i = 0; (i+1 < Vec_PtrSize(vVec)) && (((Entry1) = (Type1)Vec_PtrEntry(vVec, i)), 1) && (((Entry2) = (Type2)Vec_PtrEntry(vVec, i+1)), 1); i += 2 )
 
 ////////////////////////////////////////////////////////////////////////
 ///                     FUNCTION DEFINITIONS                         ///
diff --git a/src/misc/vec/vecWec.h b/src/misc/vec/vecWec.h
index e4e92503..c8c89701 100644
--- a/src/misc/vec/vecWec.h
+++ b/src/misc/vec/vecWec.h
@@ -303,6 +303,23 @@ static inline Vec_Int_t * Vec_WecPushLevel( Vec_Wec_t * p )
     ++p->nSize;
     return Vec_WecEntryLast( p );
 }
+static inline Vec_Int_t * Vec_WecInsertLevel( Vec_Wec_t * p, int i )
+{
+    Vec_Int_t * pTemp;
+    if ( p->nSize == p->nCap )
+    {
+        if ( p->nCap < 16 )
+            Vec_WecGrow( p, 16 );
+        else
+            Vec_WecGrow( p, 2 * p->nCap );
+    }
+    ++p->nSize;
+    assert( i >= 0 && i < p->nSize );
+    for ( pTemp = p->pArray + p->nSize - 2; pTemp >= p->pArray + i; pTemp-- )
+        pTemp[1] = pTemp[0];
+    Vec_IntZero( p->pArray + i );
+    return p->pArray + i;
+}
 
 /**Function*************************************************************
 
@@ -544,6 +561,18 @@ static inline void Vec_WecPrint( Vec_Wec_t * p, int fSkipSingles )
         printf( " }\n" );
     }
 }
+static inline void Vec_WecPrintLits( Vec_Wec_t * p )
+{
+    Vec_Int_t * vVec;
+    int i, k, iLit;
+    Vec_WecForEachLevel( p, vVec, i )
+    {
+        printf( " %4d : %2d  {", i, Vec_IntSize(vVec) );
+        Vec_IntForEachEntry( vVec, iLit, k )
+            printf( " %c%d", Abc_LitIsCompl(iLit) ? '-' : '+', Abc_Lit2Var(iLit) );
+        printf( " }\n" );
+    }
+}
 
 /**Function*************************************************************