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adding simplex

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2014-02-12 20:20:52 -08:00
parent a594597906
commit 51cb63b6c0
8 changed files with 42 additions and 13 deletions
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4
src/opt/optsmt.cpp
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@ -118,7 +118,7 @@ namespace opt {
void optsmt::update_lower(unsigned idx, rational const& r) {
inf_eps v(r);
if (m_lower[idx] < v) {
m_lower[idx] = v;
m_lower[idx] = v;
if (m_s) m_s->get_model(m_model);
}
}
@ -229,6 +229,7 @@ namespace opt {
}
lbool optsmt::lex(unsigned obj_index) {
IF_VERBOSE(1, verbose_stream() << "(optsmt:lex)\n";);
solver::scoped_push _push(*m_s);
SASSERT(obj_index < m_vars.size());
return basic_lex(obj_index);
@ -238,6 +239,7 @@ namespace opt {
lbool is_sat = l_true;
expr_ref block(m);
while (is_sat == l_true && !m_cancel) {
is_sat = m_s->check_sat(0, 0);
if (is_sat != l_true) break;