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/**CFile****************************************************************
FileName [satUtil.c]
SystemName [ABC: Logic synthesis and verification system.]
PackageName [C-language MiniSat solver.]
Synopsis [Additional SAT solver procedures.]
Author [Alan Mishchenko]
Affiliation [UC Berkeley]
Date [Ver. 1.0. Started - June 20, 2005.]
Revision [$Id: satUtil.c,v 1.4 2005/09/16 22:55:03 casem Exp $]
***********************************************************************/
#include <stdio.h>
#include <assert.h>
#include "satSolver.h"
#include "extra.h"
////////////////////////////////////////////////////////////////////////
/// DECLARATIONS ///
////////////////////////////////////////////////////////////////////////
struct clause_t
{
int size_learnt;
lit lits[0];
};
static inline int clause_size( clause* c ) { return c->size_learnt >> 1; }
static inline lit* clause_begin( clause* c ) { return c->lits; }
static void Sat_SolverClauseWriteDimacs( FILE * pFile, clause * pC, bool fIncrement );
////////////////////////////////////////////////////////////////////////
/// FUNCTION DEFINITIONS ///
////////////////////////////////////////////////////////////////////////
/**Function*************************************************************
Synopsis [Write the clauses in the solver into a file in DIMACS format.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sat_SolverWriteDimacs( sat_solver * p, char * pFileName, lit* assumptionsBegin, lit* assumptionsEnd, int incrementVars )
{
FILE * pFile;
void ** pClauses;
int nClauses, i;
// count the number of clauses
nClauses = p->clauses.size + p->learnts.size;
for ( i = 0; i < p->size; i++ )
if ( p->levels[i] == 0 && p->assigns[i] != l_Undef )
nClauses++;
// start the file
pFile = fopen( pFileName, "wb" );
if ( pFile == NULL )
{
printf( "Sat_SolverWriteDimacs(): Cannot open the ouput file.\n" );
return;
}
fprintf( pFile, "c CNF generated by ABC on %s\n", Extra_TimeStamp() );
fprintf( pFile, "p cnf %d %d\n", p->size, nClauses );
// write the original clauses
nClauses = p->clauses.size;
pClauses = p->clauses.ptr;
for ( i = 0; i < nClauses; i++ )
Sat_SolverClauseWriteDimacs( pFile, pClauses[i], incrementVars );
// write the learned clauses
nClauses = p->learnts.size;
pClauses = p->learnts.ptr;
for ( i = 0; i < nClauses; i++ )
Sat_SolverClauseWriteDimacs( pFile, pClauses[i], incrementVars );
// write zero-level assertions
for ( i = 0; i < p->size; i++ )
if ( p->levels[i] == 0 && p->assigns[i] != l_Undef )
fprintf( pFile, "%s%d%s\n",
(p->assigns[i] == l_False)? "-": "",
i + (int)(incrementVars>0),
(incrementVars) ? " 0" : "");
// write the assumptions
if (assumptionsBegin) {
for (; assumptionsBegin != assumptionsEnd; assumptionsBegin++) {
fprintf( pFile, "%s%d%s\n",
lit_sign(*assumptionsBegin)? "-": "",
lit_var(*assumptionsBegin) + (int)(incrementVars>0),
(incrementVars) ? " 0" : "");
}
}
fprintf( pFile, "\n" );
fclose( pFile );
}
/**Function*************************************************************
Synopsis [Writes the given clause in a file in DIMACS format.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sat_SolverClauseWriteDimacs( FILE * pFile, clause * pC, bool fIncrement )
{
lit * pLits = clause_begin(pC);
int nLits = clause_size(pC);
int i;
for ( i = 0; i < nLits; i++ )
fprintf( pFile, "%s%d ", (lit_sign(pLits[i])? "-": ""), lit_var(pLits[i]) + (int)(fIncrement>0) );
if ( fIncrement )
fprintf( pFile, "0" );
fprintf( pFile, "\n" );
}
/**Function*************************************************************
Synopsis [Writes the given clause in a file in DIMACS format.]
Description []
SideEffects []
SeeAlso []
***********************************************************************/
void Sat_SolverPrintStats( FILE * pFile, sat_solver * p )
{
printf( "starts : %d\n", (int)p->stats.starts );
printf( "conflicts : %d\n", (int)p->stats.conflicts );
printf( "decisions : %d\n", (int)p->stats.decisions );
printf( "propagations : %d\n", (int)p->stats.propagations );
printf( "inspects : %d\n", (int)p->stats.inspects );
}
////////////////////////////////////////////////////////////////////////
/// END OF FILE ///
////////////////////////////////////////////////////////////////////////
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