lbool SimpSolver::solve(const vec<Lit>& assumps, bool do_simp, bool turn_off_simp) {
vec<Var> extra_frozen;
lbool result = l_True;
do_simp &= use_simplification;
do_simp &= (decisionLevel() == 0);
if (do_simp){
// Assumptions must be temporarily frozen to run variable elimination:
for (int i = 0; i < assumps.size(); i++){
Var v = var(assumps[i]);
// If an assumption has been eliminated, remember it.
if (isEliminated(v))
remember(v);
if (!frozen[v]){
// Freeze and store.
setFrozen(v, true);
extra_frozen.push(v);
} }
if(eliminate(turn_off_simp))
result = l_True;
else
result = l_False;
}
if (result == l_True)
result = Solver::solve(assumps);
if (result == l_True) {
extendModel();
#ifndef NDEBUG
verifyModel();
#endif
}
if (do_simp)
// Unfreeze the assumptions that were frozen:
for (int i = 0; i < extra_frozen.size(); i++)
setFrozen(extra_frozen[i], false);
return result;
}
lbool SimpSMTSolver::solve( const vec< Lit > & assumps
, const unsigned conflicts
, bool do_simp
, bool turn_off_simp)
{
vec<Var> extra_frozen;
bool result = true;
if ( config.sat_preprocess_theory == 0 )
goto skip_theory_preproc;
opensmt_error( "preprocess theory has been temporairly disabled in this version" );
skip_theory_preproc:
// Added Code
//=================================================================================================
do_simp &= use_simplification;
if (do_simp)
{
// Assumptions must be temporarily frozen to run variable elimination:
for (int i = 0; i < assumps.size(); i++)
{
Var v = var(assumps[i]);
// If an assumption has been eliminated, remember it.
if (isEliminated(v))
remember(v);
if (!frozen[v])
{
// Freeze and store.
setFrozen(v, true);
extra_frozen.push(v);
}
}
result = eliminate(turn_off_simp);
}
#ifdef STATISTICS
CoreSMTSolver::preproc_time = cpuTime( );
#endif
lbool lresult = l_Undef;
if (result)
lresult = CoreSMTSolver::solve(assumps, conflicts);
else
lresult = l_False;
if (lresult == l_True)
{
extendModel();
// Previous line
// #ifndef NDEBUG
#ifndef SMTCOMP
verifyModel();
#endif
}
if (do_simp)
// Unfreeze the assumptions that were frozen:
for (int i = 0; i < extra_frozen.size(); i++)
setFrozen(extra_frozen[i], false);
return lresult;
}