mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2026-03-02 11:46:55 +00:00
Code Activity

fix refcount issue

Browse source
This commit is contained in:
Jakob Rath 2022-03-19 04:19:16 +01:00
parent d41d3fa6ea
commit 613b0db4cc
3 changed files with 14 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

3
src/math/polysat/solver.cpp
View file

@ -513,15 +513,18 @@ namespace polysat {
m_search.pop();
m_justification[v] = justification::unassigned();
if (!is_valid) {
LOG_H2("Chosen assignment " << assignment_pp(*this, v, val) << " is not actually viable!");
// Try to find a valid replacement value
switch (m_viable_fallback.find_viable(v, val)) {
case dd::find_t::singleton:
case dd::find_t::multiple:
LOG("Fallback solver: " << assignment_pp(*this, v, val));
// NOTE: I don't think this can happen if viable::find_viable returned a singleton. since all values excluded by viable are true negatives.
SASSERT(!j.is_propagation());
j = justification::decision(m_level + 1);
break;
case dd::find_t::empty:
LOG("Fallback solver: unsat");
m_free_pvars.unassign_var_eh(v);
auto core = m_viable_fallback.unsat_core(v); // TODO: add constraints from unsat_core to conflict
set_conflict(v);