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fix #7578

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2025-03-09 17:01:42 -07:00
parent c002c77e5a
commit ea1360ee46
1 changed files with 10 additions and 3 deletions
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13
src/opt/optsmt.cpp
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@ -109,6 +109,7 @@ namespace opt {
rational delta_per_step(1);
unsigned num_scopes = 0;
unsigned delta_index = 0; // index of objective to speed up.
bool has_bound = false; // is the current objective bounded by a constraint.
while (m.inc()) {
SASSERT(delta_per_step.is_int());
@ -116,6 +117,8 @@ namespace opt {
is_sat = m_s->check_sat(0, nullptr);
if (is_sat == l_true) {
bound = update_lower();
if (!m.is_true(bound))
has_bound = true;
if (!can_increment_delta(lower, delta_index)) {
delta_per_step = 1;
}
@ -133,10 +136,12 @@ namespace opt {
// only try to improve delta_index.
bound = m_s->mk_ge(delta_index, m_lower[delta_index] + inf_eps(delta_per_step));
}
TRACE("opt", tout << mk_pp(m_objs.get(delta_index), m) << " index: " << delta_index << " delta: " << delta_per_step << " : " << bound << "\n";);
TRACE("opt", tout << mk_pp(m_objs.get(delta_index), m) << " index: " << delta_index
<< " delta: " << delta_per_step << " bound: " << bound
<< " " << m_lower[delta_index] << " " << m_upper[delta_index] << "\n");
if (bound == last_bound) {
is_sat = l_false;
if (!m_lower[delta_index].is_finite() && !m_upper[delta_index].is_finite())
if ((!has_bound || !m_lower[delta_index].is_finite()) && !m_upper[delta_index].is_finite())
m_lower[delta_index] = m_upper[delta_index];
}
else {
@ -171,9 +176,11 @@ namespace opt {
steps = 0;
step_incs = 0;
++delta_index;
has_bound = false;
}
else {
if (num_scopes > 0) m_s->pop(num_scopes);
if (num_scopes > 0)
m_s->pop(num_scopes);
num_scopes = 0;
break;
}