lbool check_sat(unsigned sz, expr * const * assumptions, double const* weights, double max_weight) {
m_weights.reset();
if (weights != 0) {
m_weights.append(sz, weights);
}
SASSERT(m_weights.empty() == (m_weights.c_ptr() == 0));
m_solver.pop_to_base_level();
dep2asm_t dep2asm;
m_model = 0;
lbool r = internalize_formulas();
if (r != l_true) return r;
r = internalize_assumptions(sz, assumptions, dep2asm);
if (r != l_true) return r;
r = m_solver.check(m_asms.size(), m_asms.c_ptr(), m_weights.c_ptr(), max_weight);
switch (r) {
case l_true:
if (sz > 0 && !weights) {
check_assumptions(dep2asm);
}
break;
case l_false:
// TBD: expr_dependency core is not accounted for.
if (!m_asms.empty()) {
extract_core(dep2asm);
}
break;
default:
break;
}
return r;
}
void display_weighted(std::ostream& out, unsigned sz, expr * const * assumptions, unsigned const* weights) {
m_weights.reset();
if (weights != 0) {
for (unsigned i = 0; i < sz; ++i) m_weights.push_back(weights[i]);
}
m_solver.pop_to_base_level();
dep2asm_t dep2asm;
VERIFY(l_true == internalize_formulas());
VERIFY(l_true == internalize_assumptions(sz, assumptions, dep2asm));
svector<unsigned> nweights;
for (unsigned i = 0; i < m_asms.size(); ++i) {
nweights.push_back((unsigned) m_weights[i]);
}
m_solver.display_wcnf(out, m_asms.size(), m_asms.c_ptr(), nweights.c_ptr());
}
void display_weighted(std::ostream& out, unsigned sz, expr * const * assumptions, unsigned const* weights) {
if (weights != nullptr) {
for (unsigned i = 0; i < sz; ++i) m_weights.push_back(weights[i]);
}
init_preprocess();
m_solver.pop_to_base_level();
dep2asm_t dep2asm;
expr_ref_vector asms(m);
for (unsigned i = 0; i < sz; ++i) {
expr_ref a(m.mk_fresh_const("s", m.mk_bool_sort()), m);
expr_ref fml(m.mk_implies(a, assumptions[i]), m);
assert_expr(fml);
asms.push_back(a);
}
VERIFY(l_true == internalize_formulas());
VERIFY(l_true == internalize_assumptions(sz, asms.c_ptr(), dep2asm));
svector<unsigned> nweights;
for (unsigned i = 0; i < m_asms.size(); ++i) {
nweights.push_back((unsigned) m_weights[i]);
}
m_weights.reset();
m_solver.display_wcnf(out, m_asms.size(), m_asms.c_ptr(), nweights.c_ptr());
}