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fixes to bv/dual-solver,

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This commit is contained in:
Nikolaj Bjorner 2020-11-08 17:17:43 -08:00
parent a4354c960c
commit 89ffb45c4f
19 changed files with 94 additions and 75 deletions
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31
src/sat/smt/sat_dual_solver.cpp
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@ -90,19 +90,42 @@ namespace sat {
}
bool dual_solver::operator()(solver const& s) {
m_core.reset();
m_core.append(m_units);
if (m_roots.empty())
return true;
m_solver.user_push();
m_solver.add_clause(m_roots.size(), m_roots.c_ptr(), status::input());
m_lits.reset();
for (bool_var v : m_tracked_vars)
m_lits.push_back(literal(v, l_false == s.value(m_var2ext[v])));
lbool is_sat = m_solver.check(m_lits.size(), m_lits.c_ptr());
m_core.reset();
m_core.append(m_units);
if (is_sat == l_false)
for (literal lit : m_solver.get_core())
m_core.push_back(lit2ext(lit));
TRACE("euf", m_solver.display(tout << "is-sat: " << is_sat << " core: " << m_core << "\n"););
m_core.push_back(lit2ext(lit));
if (is_sat == l_true) {
IF_VERBOSE(0, display(s, verbose_stream()));
UNREACHABLE();
}
TRACE("dual", m_solver.display(tout << "is-sat: " << is_sat << " core: " << m_core << "\n"););
m_solver.user_pop(1);
return is_sat == l_false;
}
std::ostream& dual_solver::display(solver const& s, std::ostream& out) const {
for (auto r : m_roots)
out << r << " " << m_solver.value(r) << "\n";
for (unsigned v = 0; v < m_solver.num_vars(); ++v) {
bool_var w = m_var2ext.get(v, null_bool_var);
if (w == null_bool_var)
continue;
lbool v1 = m_solver.value(v);
lbool v2 = s.value(w);
if (v1 == v2)
continue;
out << w << " " << v1 << " " << v2 << "\n";
}
return out;
}
}