mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-07-19 10:52:02 +00:00
Code Activity

fix bug in root setting exposed by incremental mode pb_solver

Browse source
This commit is contained in:
Nikolaj Bjorner 2022-01-18 10:55:27 +01:00
parent 36cfb88f5f
commit 06feb71eb1
3 changed files with 18 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

7
src/sat/sat_elim_eqs.cpp
View file

@ -229,11 +229,12 @@ namespace sat {
literal r = roots[v];
SASSERT(v != r.var());
if (m_solver.m_cut_simplifier) m_solver.m_cut_simplifier->set_root(v, r);
if (m_solver.m_cut_simplifier)
m_solver.m_cut_simplifier->set_root(v, r);
bool set_root = m_solver.set_root(l, r);
bool root_ok = !m_solver.is_external(v) || set_root;
TRACE("elim_eqs", tout << l << " " << r << "\n";);
if (m_solver.is_assumption(v) || (m_solver.is_external(v) && (m_solver.is_incremental() || !root_ok))) {
if (m_solver.is_assumption(v) || (m_solver.is_external(v) && (m_solver.is_incremental() || !set_root))) {
// cannot really eliminate v, since we have to notify extension of future assignments
if (m_solver.m_config.m_drat) {
m_solver.m_drat.add(~l, r, sat::status::redundant());