static void tst10() {
sat_solver<gate_extension> s;
literal l1 = s.mk_var();
literal l2 = s.mk_var();
literal l3 = s.mk_var();
s.push_scope();
s.assign(l1, mk_axiom());
s.push_scope();
literal l4 = s.mk_var();
literal l5 = s.mk_var();
literal l6 = s.mk_iff(l4, l5);
literal l7 = s.mk_var();
literal l8 = s.mk_or(l6, l7);
s.assign(l8, mk_axiom());
s.mk_transient_clause(~l8, l3);
s.mk_transient_clause(~l8, l2);
s.mk_transient_clause(literal_vector(~l3, ~l1, ~l2));
SASSERT(s.inconsistent());
#ifdef Z3DEBUG
bool r =
#endif
s.resolve_conflict();
SASSERT(r);
SASSERT(s.m_scope_lvl == 1);
s.pop_scope(1);
SASSERT(s.m_ref_count[l4.var()] > 0);
SASSERT(s.m_ref_count[l5.var()] > 0);
SASSERT(s.m_ref_count[l6.var()] > 0);
SASSERT(s.m_ref_count[l7.var()] > 0);
SASSERT(s.m_ref_count[l8.var()] > 0);
s.push_scope();
s.assign(~l1, mk_axiom());
s.push_scope();
s.assign(l5, mk_axiom());
s.mk_transient_clause(~l5, ~l4);
s.propagate();
SASSERT(s.get_assignment(l6) == l_false);
SASSERT(s.get_assignment(l8) == l_undef);
#ifdef Z3DEBUG
s.del_learned_clauses();
SASSERT(s.m_ref_count[l7.var()] == 0);
SASSERT(s.m_ref_count[l8.var()] == 0);
SASSERT(s.m_ref_count[l4.var()] > 0);
SASSERT(s.m_ref_count[l5.var()] > 0);
SASSERT(s.m_ref_count[l6.var()] > 0);
#endif
s.mk_transient_clause(l6, l3);
s.mk_transient_clause(l6, l2);
s.mk_transient_clause(literal_vector(~l3, l1, ~l2));
SASSERT(s.inconsistent());
#ifdef Z3DEBUG
r =
#endif
s.resolve_conflict();
SASSERT(r);
}
void context::display(std::ostream& out, b_justification j) const {
switch (j.get_kind()) {
case b_justification::AXIOM:
out << "axiom";
break;
case b_justification::BIN_CLAUSE: {
literal l2 = j.get_literal();
out << "bin-clause ";
display_literal(out, l2);
break;
}
case b_justification::CLAUSE: {
clause * cls = j.get_clause();
out << "clause ";
if (cls) out << literal_vector(cls->get_num_literals(), cls->begin());
break;
}
case b_justification::JUSTIFICATION: {
out << "justification " << j.get_justification()->get_from_theory() << ": ";
literal_vector lits;
const_cast<conflict_resolution&>(*m_conflict_resolution).justification2literals(j.get_justification(), lits);
display_literals(out, lits);
break;
}
default:
UNREACHABLE();
break;
}
out << "\n";
}
