Пример #1
0
static void track_clause(sat::solver& dst,
                         sat::literal_vector& lits,
                         sat::literal_vector& assumptions,
                         vector<sat::literal_vector>& tracking_clauses) {
    sat::literal lit = sat::literal(dst.mk_var(true, false), false);
    tracking_clauses.set(lit.var(), lits);
    lits.push_back(~lit);
    dst.mk_clause(lits.size(), lits.c_ptr());
    assumptions.push_back(lit);            
}
Пример #2
0
bool parse_dimacs_core(Buffer & in, std::ostream& err, sat::solver & solver) {
    sat::literal_vector lits;
    try {
        while (true) {
            skip_whitespace(in);
            if (*in == EOF) {
                break;
            }
            else if (*in == 'c' || *in == 'p') {
                skip_line(in);
            }
            else {
                read_clause(in, err, solver, lits);
                solver.mk_clause(lits.size(), lits.c_ptr());
            }
        }
    }
    catch (lex_error) {
        return false;
    }
    return true;
}