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Make dep_mgr private in seq_nielsen; expose conflict sources vector (#9129)

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* make dep_mgr private in seq_nielsen, expose conflict_sources vector

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
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* move deps_to_lits to seq namespace in seq_nielsen

Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
Agent-Logs-Url: https://github.com/Z3Prover/z3/sessions/8d736478-8f9b-4451-8d1f-539ce72525c7

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
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Copilot 2026-03-25 08:05:00 -07:00 • committed by GitHub
parent 49f2eb0e49
commit 46c76d89e0
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6 changed files with 51 additions and 31 deletions
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28
src/smt/theory_nseq.cpp
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@ -579,29 +579,25 @@ namespace smt {
// Conflict explanation
// -----------------------------------------------------------------------
void theory_nseq::deps_to_lits(seq::dep_tracker const& deps, enode_pair_vector& eqs, literal_vector& lits) {
vector<seq::dep_source, false> vs;
m_nielsen.dep_mgr().linearize(deps, vs);
for (seq::dep_source const &d : vs) {
if (std::holds_alternative<enode_pair>(d))
eqs.push_back(std::get<enode_pair>(d));
else
lits.push_back(std::get<sat::literal>(d));
}
}
void theory_nseq::add_conflict_clause(seq::dep_tracker const& deps) {
enode_pair_vector eqs;
literal_vector lits;
deps_to_lits(deps, eqs, lits);
seq::deps_to_lits(deps, eqs, lits);
++m_num_conflicts;
set_conflict(eqs, lits);
}
void theory_nseq::explain_nielsen_conflict() {
seq::dep_tracker deps = m_nielsen.dep_mgr().mk_empty();
m_nielsen.collect_conflict_deps(deps);
add_conflict_clause(deps);
enode_pair_vector eqs;
literal_vector lits;
for (seq::dep_source const& d : m_nielsen.conflict_sources()) {
if (std::holds_alternative<enode_pair>(d))
eqs.push_back(std::get<enode_pair>(d));
else
lits.push_back(std::get<sat::literal>(d));
}
++m_num_conflicts;
set_conflict(eqs, lits);
}
void theory_nseq::set_conflict(enode_pair_vector const& eqs, literal_vector const& lits) {
@ -862,7 +858,7 @@ namespace smt {
// conditional constraints: propagate with justification from dep_tracker
enode_pair_vector eqs;
literal_vector lits;
deps_to_lits(lc.m_dep, eqs, lits);
seq::deps_to_lits(lc.m_dep, eqs, lits);
ctx.mark_as_relevant(lit);
justification* js = ctx.mk_justification(