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/**CFile****************************************************************
FileName [satTrace.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [SAT sat_solver.]
Synopsis [Records the trace of SAT solving in the CNF form.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: satTrace.c,v 1.4 2005/09/16 22:55:03 casem Exp $]
***********************************************************************/
#include "satSolver.h"
/*
The trace of SAT solving contains the original clause of the problem
along with the learned clauses derived during SAT solving.
The first line of the resulting file contains 3 numbers instead of 2:
c <num_vars> <num_all_clauses> <num_root_clauses>
*/
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Start the trace recording.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sat_SolverTraceStart( sat_solver * pSat, char * pName )
{
assert( pSat->pFile == NULL );
pSat->pFile = fopen( pName, "w" );
fprintf( pSat->pFile, " \n" );
pSat->nClauses = 0;
pSat->nRoots = 0;
}
/**Function*************************************************************
Synopsis [Stops the trace recording.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sat_SolverTraceStop( sat_solver * pSat )
{
if ( pSat->pFile == NULL )
return;
rewind( pSat->pFile );
fprintf( pSat->pFile, "p %d %d %d", sat_solver_nvars(pSat), pSat->nClauses, pSat->nRoots );
fclose( pSat->pFile );
pSat->pFile = NULL;
}
/**Function*************************************************************
Synopsis [Writes one clause into the trace file.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sat_SolverTraceWrite( sat_solver * pSat, int * pBeg, int * pEnd, int fRoot )
{
if ( pSat->pFile == NULL )
return;
pSat->nClauses++;
pSat->nRoots += fRoot;
for ( ; pBeg < pEnd ; pBeg++ )
fprintf( pSat->pFile, " %d", lit_print(*pBeg) );
fprintf( pSat->pFile, " 0\n" );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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