bool SatBuilder::doEndProgram() {
bool ok = ctx()->ok();
if (!softClauses_.empty() && ok) {
ctx()->setPreserveModels(true);
ctx()->resizeVars(vars_+1);
ctx()->startAddConstraints();
LitVec cc;
for (LitVec::const_iterator it = softClauses_.begin(), end = softClauses_.end(); it != end && ok; ++it) {
weight_t w = (weight_t)it->asUint();
Literal relax = *++it;
if (!relax.watched()) {
cc.assign(1, relax);
do { cc.push_back(*++it); } while (!cc.back().watched());
cc.back().clearWatch();
ok = ClauseCreator::create(*ctx()->master(), cc, Constraint_t::static_constraint).ok();
}
relax.clearWatch();
addMinLit(WeightLiteral(relax, w));
}
LitVec().swap(softClauses_);
}
if (ok && !ctx()->preserveModels()) {
uint32 p = 12;
for (Var v = 1; v != (Var)varState_.size() && ok; ++v) {
uint32 m = varState_[v];
if ( (m & p) != p ) { ok = ctx()->addUnary(Literal(v, ((m>>2) & 1u) != 1)); }
}
// <sum>::= <weightedterm> | <weightedterm> <sum>
// <weightedterm>::= <integer> <oneOrMoreSpace> <term> <oneOrMoreSpace>
void OPBParser::parseSum() {
active_.lits.clear();
while (!match(*input(), ';', true)) {
int coeff = input()->parseInt(INT_MIN + 1, INT_MAX, "Coefficient expected!");
parseTerm();
Literal x = term_.size() == 1 ? term_[0] : builder_->addProduct(term_);
active_.lits.push_back(WeightLiteral(x, coeff));
if (**input() == '>' || **input() == '=') break;
input()->skipWhite();
}
input()->skipWhite();
}
