src/sat/bsat/satTrace.c

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#include <stdio.h>
#include <assert.h>
#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>
*/




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;
}   

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;
}


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" );
}

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