void ClingconDLPropagator::reason(Clasp::Solver& s, Clasp::Literal p, Clasp::LitVec& lits)
{
auto it = lits.size();
Clasp::Literal lid = Clasp::Literal::fromRep(s_.reasonData(p));
difflogic::DLPropagator::EdgeId id = lid.var();
if (lid.sign())
id *=-1;
//std::cout << "Need reason for " << p.var() << "," << p.sign() << " which has data " << id << " at level " << s_.level(p.var()) << std::endl;
auto reason = p_.reason(id);
for (auto i : reason)
lits.push_back(edgeid2lit(i));
// std::cout << "Reason: ";
// for (auto i : reason)
// {
// Clasp::Literal l = edgeid2lit(i);
// std::cout << "Data: " << i << " Literal: " << l.var() << "," << l.sign() << " @" << s_.level(l.var()) << " ";
// std::cout << (s_.isFalse(l) ? "false" : (s_.isTrue(l) ? "true" : "unknown"));
// }
// std::cout << std::endl;
assert(std::count_if(lits.begin()+it, lits.end(), [&](Clasp::Literal i){ return s_.isTrue(i); } )==lits.size()-it);
//assert(std::count_if(lits.begin()+it, lits.end(), [&](Clasp::Literal i){ return s_.isTrue(i) && (s_.level(i.var()) == s_.decisionLevel()); } )>=1);
// i case of conflict minimization, it can happen that the decision literal is higher
assert(std::count_if(lits.begin()+it, lits.end(), [&](Clasp::Literal i){ return s_.isTrue(i) && (s_.level(i.var()) == s_.level(p.var())); } )>=1);
}
bool onModel(const Clasp::Solver& s, const Clasp::Model& m) {
printModel(s.symbolTable(), m);
// exclude this model
Clasp::LitVec clause;
for (uint32 i = 1; i <= s.decisionLevel(); ++i) {
clause.push_back( ~s.decision(i) );
}
return m.ctx->commitClause(clause);
}