1 files changed, 108 insertions, 0 deletions
diff --git a/src/proof/int/intUtil.c b/src/proof/int/intUtil.c
new file mode 100644
index 00000000..8027bdef
--- /dev/null
+++ b/src/proof/int/intUtil.c
@@ -0,0 +1,108 @@
+/**CFile****************************************************************
+
+  FileName    [intUtil.c]
+
+  SystemName  [ABC: Logic synthesis and verification system.]
+
+  PackageName [Interpolation engine.]
+
+  Synopsis    [Various interpolation utilities.]
+
+  Author      [Alan Mishchenko]
+  
+  Affiliation [UC Berkeley]
+
+  Date        [Ver. 1.0. Started - June 24, 2008.]
+
+  Revision    [$Id: intUtil.c,v 1.00 2005/06/20 00:00:00 alanmi Exp $]
+
+***********************************************************************/
+
+#include "intInt.h"
+
+ABC_NAMESPACE_IMPL_START
+
+
+////////////////////////////////////////////////////////////////////////
+///                        DECLARATIONS                              ///
+////////////////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////////////////
+///                     FUNCTION DEFINITIONS                         ///
+////////////////////////////////////////////////////////////////////////
+
+
+/**Function*************************************************************
+
+  Synopsis    [Returns 1 if the property fails in the initial state.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Inter_ManCheckInitialState( Aig_Man_t * p )
+{
+    Cnf_Dat_t * pCnf;
+    Aig_Obj_t * pObj;
+    sat_solver * pSat;
+    int i, status;
+    int clk = clock();
+    pCnf = Cnf_Derive( p, Saig_ManRegNum(p) ); 
+    pSat = (sat_solver *)Cnf_DataWriteIntoSolver( pCnf, 1, 1 );
+    if ( pSat == NULL )
+    {
+        Cnf_DataFree( pCnf );
+        return 0;
+    }
+    status = sat_solver_solve( pSat, NULL, NULL, (ABC_INT64_T)0, (ABC_INT64_T)0, (ABC_INT64_T)0, (ABC_INT64_T)0 );
+    ABC_PRT( "Time", clock() - clk );
+    if ( status == l_True )
+    {
+        p->pSeqModel = Abc_CexAlloc( Aig_ManRegNum(p), Saig_ManPiNum(p), 1 );
+        Saig_ManForEachPi( p, pObj, i )
+            if ( sat_solver_var_value( pSat, pCnf->pVarNums[Aig_ObjId(pObj)] ) )
+                Abc_InfoSetBit( p->pSeqModel->pData, Aig_ManRegNum(p) + i );
+    }
+    Cnf_DataFree( pCnf );
+    sat_solver_delete( pSat );
+    return status == l_True;
+}
+
+/**Function*************************************************************
+
+  Synopsis    [Returns 1 if the property holds in all states.]
+
+  Description []
+               
+  SideEffects []
+
+  SeeAlso     []
+
+***********************************************************************/
+int Inter_ManCheckAllStates( Aig_Man_t * p )
+{
+    Cnf_Dat_t * pCnf;
+    sat_solver * pSat;
+    int status;
+    int clk = clock();
+    pCnf = Cnf_Derive( p, Saig_ManRegNum(p) ); 
+    pSat = (sat_solver *)Cnf_DataWriteIntoSolver( pCnf, 1, 0 );
+    Cnf_DataFree( pCnf );
+    if ( pSat == NULL )
+        return 1;
+    status = sat_solver_solve( pSat, NULL, NULL, (ABC_INT64_T)0, (ABC_INT64_T)0, (ABC_INT64_T)0, (ABC_INT64_T)0 );
+    sat_solver_delete( pSat );
+    ABC_PRT( "Time", clock() - clk );
+    return status == l_False;
+}
+
+////////////////////////////////////////////////////////////////////////
+///                       END OF FILE                                ///
+////////////////////////////////////////////////////////////////////////
+
+
+ABC_NAMESPACE_IMPL_END
+