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fix #7363. Replay relevancy on unit literals that are re-asserted during backtracking.

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2024-10-08 19:40:37 -07:00
parent cfd00ad672
commit 6bd46b0922
3 changed files with 19 additions and 15 deletions
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9
src/smt/smt_context.h
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@ -71,6 +71,12 @@ namespace smt {
enode_pp(enode* n, context const& ctx): ctx(ctx), n(n) {}
};
struct replay_unit {
expr_ref m_unit;
bool m_sign;
bool m_relevant;
};
class context {
friend class model_generator;
friend class lookahead;
@ -183,8 +189,7 @@ namespace smt {
clause_vector m_aux_clauses;
clause_vector m_lemmas;
vector<clause_vector> m_clauses_to_reinit;
expr_ref_vector m_units_to_reassert;
svector<char> m_units_to_reassert_sign;
vector<replay_unit> m_units_to_reassert;
literal_vector m_assigned_literals;
typedef std::pair<clause*, literal_vector> tmp_clause;
vector<tmp_clause> m_tmp_clauses;