bool is_target_core(expr * n, rational & u) {
if (!is_uninterp_const(n))
return false;
rational l; bool s;
if (m_bm.has_lower(n, l, s) &&
m_bm.has_upper(n, u, s) &&
l.is_zero() &&
!u.is_neg() &&
u.get_num_bits() <= m_max_bits) {
return true;
}
return false;
}
unsigned context::scoped_state::add(expr* f, rational const& w, symbol const& id) {
if (w.is_neg()) {
throw default_exception("Negative weight supplied. Weight should be positive");
}
if (w.is_zero()) {
throw default_exception("Zero weight supplied. Weight should be positive");
}
if (!m.is_bool(f)) {
throw default_exception("Soft constraint should be Boolean");
}
if (!m_indices.contains(id)) {
m_objectives.push_back(objective(m, id));
m_indices.insert(id, m_objectives.size() - 1);
}
SASSERT(m_indices.contains(id));
unsigned idx = m_indices[id];
m_objectives[idx].m_terms.push_back(f);
m_objectives[idx].m_weights.push_back(w);
m_objectives_term_trail.push_back(idx);
return idx;
}
