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debugging mbi

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-06-11 21:22:53 -07:00 • committed by Arie Gurfinkel
parent e0aaf4452b
commit ba504e4243
4 changed files with 82 additions and 17 deletions
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13
src/qe/qe_mbi.cpp
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@ -30,13 +30,17 @@ Revision History:
namespace qe {
lbool mbi_plugin::check(func_decl_ref_vector const& vars, expr_ref_vector& lits, model_ref& mdl) {
SASSERT(lits.empty());
ast_manager& m = lits.get_manager();
expr_ref_vector lits0(lits);
while (true) {
lits.reset();
lits.append(lits0);
switch ((*this)(vars, lits, mdl)) {
case mbi_sat:
return l_true;
case mbi_unsat:
if (lits.empty()) return l_false;
TRACE("qe", tout << "block: " << lits << "\n";);
block(lits);
break;
case mbi_undef:
@ -111,6 +115,10 @@ namespace qe {
m_solver(s),
m_dual_solver(sNot)
{
params_ref p;
p.set_bool("smt.core.minimize", true);
m_solver->updt_params(p);
m_dual_solver->updt_params(p);
expr_ref_vector fmls(m);
m_solver->get_assertions(fmls);
expr_fast_mark1 marks;
@ -141,6 +149,7 @@ namespace qe {
lits.push_back(m.mk_not(e));
}
}
TRACE("qe", tout << "atoms from model: " << lits << "\n";);
r = m_dual_solver->check_sat(lits);
expr_ref_vector core(m);
term_graph tg(m);
@ -148,10 +157,12 @@ namespace qe {
case l_false:
// use the dual solver to find a 'small' implicant
m_dual_solver->get_unsat_core(core);
TRACE("qe", tout << "core: " << core << "\n";);
// project the implicant onto vars
tg.add_lits(core);
lits.reset();
lits.append(tg.project(vars, false));
TRACE("qe", tout << "project: " << lits << "\n";);
return mbi_sat;
case l_undef:
return mbi_undef;