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fix lower/upper bound estimate with respect to offset

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-05-09 16:32:17 -07:00
parent 9c4409a8fe
commit 252b9e8819
2 changed files with 5 additions and 1 deletions
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5
src/opt/opt_context.cpp
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@ -710,22 +710,25 @@ namespace opt {
void context::update_lower(bool override) {
expr_ref val(m);
rational r(0);
for (unsigned i = 0; i < m_objectives.size(); ++i) {
objective const& obj = m_objectives[i];
rational r;
switch(obj.m_type) {
case O_MINIMIZE:
if (m_model->eval(obj.m_term, val) && is_numeral(val, r)) {
r += obj.m_offset;
m_optsmt.update_lower(obj.m_index, inf_eps(-r), override);
}
break;
case O_MAXIMIZE:
if (m_model->eval(obj.m_term, val) && is_numeral(val, r)) {
r += obj.m_offset;
m_optsmt.update_lower(obj.m_index, inf_eps(r), override);
}
break;
case O_MAXSMT: {
bool ok = true;
r = obj.m_offset;
for (unsigned j = 0; ok && j < obj.m_terms.size(); ++j) {
if (m_model->eval(obj.m_terms[j], val)) {
if (!m.is_true(val)) {

1
src/opt/weighted_maxsat.cpp
View file

@ -111,6 +111,7 @@ namespace opt {
if (!m_assignment.back()) {
m_upper += m_weights[i];
}
TRACE("opt", tout << "evaluate: " << val << "\n";);
}
}
expr* mk_not(expr* e) {