mirror of
https://github.com/Z3Prover/z3
synced 2025-04-08 18:31:49 +00:00
fixup dependencies for trim'
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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parent
75a9038aa2
commit
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@ -56,6 +56,7 @@ namespace sat {
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IF_VERBOSE(4, verbose_stream() << cl << " in-core " << in_core(cl) << ": "; for (auto const& [k,v] : m_clauses) verbose_stream() << "{" << v.m_clauses << "} "; verbose_stream() << "\n");
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m_result.push_back({id, unsigned_vector()});
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m_in_deps.reset();
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if (is_initial)
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continue;
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conflict_analysis_core(cl, clp);
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@ -219,6 +220,7 @@ namespace sat {
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}
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void proof_trim::add_dependency(literal lit) {
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IF_VERBOSE(3, verbose_stream() << "add dependency " << lit << "\n");
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bool_var v = lit.var();
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if (m_propagated[v]) { // literal was propagated after assuming ~C
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if (!s.is_marked(v))
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@ -253,6 +255,12 @@ namespace sat {
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add_core(lit, j);
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}
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void proof_trim::insert_dep(unsigned dep) {
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if (m_in_deps.contains(dep))
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return;
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m_in_deps.insert(dep);
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m_result.back().second.push_back(dep);
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}
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void proof_trim::add_core(literal l, justification j) {
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m_clause.reset();
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@ -277,14 +285,18 @@ namespace sat {
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IF_VERBOSE(3, verbose_stream() << "add core " << m_clause << "\n");
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auto& [clauses, id, in_core] = m_clauses.find(m_clause);
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in_core = true;
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m_result.back().second.push_back(id);
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if (l != null_literal && s.lvl(l) == 0 && m_clause.size() > 1) {
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m_clause.reset();
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m_clause.push_back(l);
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auto& [clauses, id, in_core] = m_clauses.insert_if_not_there(m_clause, {{}, 0, true });
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in_core = true;
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if (id != 0)
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m_result.back().second.push_back(id);
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insert_dep(id);
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if (m_clause.size() > 1 && l != null_literal && s.lvl(l) == 0) {
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for (auto lit : m_clause) {
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if (s.lvl(lit) != 0)
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continue;
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m_clause2.reset();
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m_clause2.push_back(s.value(lit) == l_false ? ~lit : lit);
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auto& [clauses, id, in_core] = m_clauses.insert_if_not_there(m_clause2, {{}, UINT_MAX, true });
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in_core = true;
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if (id != UINT_MAX)
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insert_dep(id);
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}
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}
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}
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@ -30,7 +30,8 @@ namespace sat {
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class proof_trim {
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solver s;
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literal_vector m_clause, m_conflict;
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literal_vector m_clause, m_clause2, m_conflict;
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uint_set m_in_deps;
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uint_set m_in_clause;
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uint_set m_in_coi;
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clause* m_conflict_clause = nullptr;
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@ -72,6 +73,8 @@ namespace sat {
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void revive(literal_vector const& cl, clause* cp);
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clause* del(literal_vector const& cl);
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void insert_dep(unsigned dep);
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uint_set m_units;
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bool unit_or_binary_occurs();
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void set_conflict(literal_vector const& c, clause* cp) { m_conflict.reset(); m_conflict.append(c); m_conflict_clause = cp;}
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