mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2026-02-28 10:51:28 +00:00
Code Activity

remove ite terms from objectives to synchronize values in tableau with objective value. Fixes part of (three repros) from issue #120

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@hotmail.com>
This commit is contained in:
Nikolaj Bjorner 2015-06-02 10:38:22 -07:00
parent ffff006945
commit d06207f072
2 changed files with 8 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

3
src/opt/optsmt.cpp
View file

@ -141,6 +141,7 @@ namespace opt {
ors.push_back(m_s->mk_ge(i, m_upper[i]));
}
fml = m.mk_or(ors.size(), ors.c_ptr());
tmp = m.mk_fresh_const("b", m.mk_bool_sort());
fml = m.mk_implies(tmp, fml);
@ -150,6 +151,7 @@ namespace opt {
solver::scoped_push _push(*m_s);
while (!m_cancel) {
m_s->assert_expr(fml);
TRACE("opt", tout << fml << "\n";);
is_sat = m_s->check_sat(1,vars);
if (is_sat == l_true) {
disj.reset();
@ -343,6 +345,7 @@ namespace opt {
m_lower[i] = m_s->saved_objective_value(i);
}
}
TRACE("opt", tout << "strengthen bound: " << block << "\n";);
m_s->assert_expr(block);
// TBD: only works for simplex