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#5417

Browse source 
https://github.com/Z3Prover/z3/issues/5417#issuecomment-882050602
This commit is contained in:
Nikolaj Bjorner 2021-07-18 10:44:30 -07:00
parent 750c06e258
commit e8bc9f3469
4 changed files with 10 additions and 2 deletions
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1
src/ast/euf/euf_egraph.h
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@ -326,6 +326,7 @@ namespace euf {
void collect_statistics(statistics& st) const;
unsigned num_scopes() const { return m_scopes.size() + m_num_scopes; }
unsigned num_nodes() const { return m_nodes.size(); }
};
inline std::ostream& operator<<(std::ostream& out, egraph const& g) { return g.display(out); }

2
src/sat/smt/array_axioms.cpp
View file

@ -427,9 +427,11 @@ namespace array {
app_ref sel1(m), sel2(m);
sel1 = a.mk_select(args1);
sel2 = a.mk_select(args2);
prop |= !ctx.get_enode(sel1) || !ctx.get_enode(sel2);
if (ctx.propagate(e_internalize(sel1), e_internalize(sel2), array_axiom()))
prop = true;
}
prop |= !ctx.get_enode(def1) || !ctx.get_enode(def2);
if (ctx.propagate(e_internalize(def1), e_internalize(def2), array_axiom()))
prop = true;
return prop;

1
src/sat/smt/dt_solver.cpp
View file

@ -714,6 +714,7 @@ namespace dt {
if (v == euf::null_theory_var)
return false;
euf::enode* con = m_var_data[m_find.find(v)]->m_constructor;
CTRACE("dt", !con, display(tout) << ctx.bpp(n) << "\n";);
if (con->num_args() == 0)
dep.insert(n, nullptr);
for (enode* arg : euf::enode_args(con))

8
src/sat/smt/euf_solver.cpp
View file

@ -449,8 +449,8 @@ namespace euf {
if (!init_relevancy())
give_up = true;
unsigned num_nodes = m_egraph.num_nodes();
for (auto* e : m_solvers) {
if (!m.inc())
return sat::check_result::CR_GIVEUP;
@ -468,6 +468,10 @@ namespace euf {
return sat::check_result::CR_CONTINUE;
if (give_up)
return sat::check_result::CR_GIVEUP;
if (num_nodes < m_egraph.num_nodes()) {
IF_VERBOSE(1, verbose_stream() << "new nodes created, but not detected\n");
return sat::check_result::CR_CONTINUE;
}
if (m_qsolver)
return m_qsolver->check();
TRACE("after_search", s().display(tout););