mirror of
https://github.com/Z3Prover/z3
synced 2025-04-08 18:31:49 +00:00
parent
0e429cab33
commit
0aac7e54a9
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@ -245,41 +245,45 @@ namespace opt {
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inf_eps val2;
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m_valid_objectives[i] = true;
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has_shared = true;
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TRACE("opt", tout << (has_shared?"has shared":"non-shared") << " " << val << " " << blocker << "\n";);
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TRACE("opt", tout << (has_shared?"has shared":"non-shared") << " " << val << " " << blocker << "\n";
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if (m_last_model) tout << *m_last_model << "\n";);
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if (!m_models[i])
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m_models.set(i, m_last_model.get());
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auto decrement = [&]() {
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SASSERT(has_shared);
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if (l_true != decrement_value(i, val)) {
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if (l_true != m_context.check(0, nullptr))
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throw default_exception("maximization suspended");
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m_context.get_model(m_last_model);
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}
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};
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if (!val.is_finite()) {
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// skip model updates
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}
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else if (m_context.get_context().update_model(has_shared)) {
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TRACE("opt", tout << "updated\n";);
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m_last_model = nullptr;
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m_context.get_model(m_last_model);
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if (has_shared && val != current_objective_value(i)) {
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decrement_value(i, val);
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m_last_model = nullptr;
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if (l_true != m_context.check(0, nullptr))
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throw default_exception("maximization suspended");
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m_context.get_model(m_last_model);
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decrement();
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}
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else {
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m_models.set(i, m_last_model.get());
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}
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}
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else {
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m_last_model = nullptr;
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SASSERT(has_shared);
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decrement_value(i, val);
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if (l_true != m_context.check(0, nullptr))
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throw default_exception("maximization suspended");
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m_context.get_model(m_last_model);
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decrement();
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}
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m_objective_values[i] = val;
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TRACE("opt", {
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tout << "objective: " << mk_pp(m_objective_terms[i].get(), m) << "\n";
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tout << "maximal value: " << val << "\n";
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tout << "new condition: " << blocker << "\n";
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if (m_models[i]) model_smt2_pp(tout << "update model:\n", m, *m_models[i], 0); });
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if (m_models[i]) model_smt2_pp(tout << "update model:\n", m, *m_models[i], 0);
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if (m_last_model) model_smt2_pp(tout << "last model:\n", m, *m_last_model, 0);
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});
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}
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lbool opt_solver::decrement_value(unsigned i, inf_eps& val) {
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@ -326,7 +330,8 @@ namespace opt {
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}
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void opt_solver::get_model_core(model_ref & m) {
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for (auto* mdl : m_models) {
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for (unsigned i = m_models.size(); i-- > 0; ) {
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auto* mdl = m_models[i];
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if (mdl) {
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m = mdl;
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return;
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