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#5545

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This commit is contained in:
Nikolaj Bjorner 2021-09-20 13:57:34 -07:00
parent 1352aa06f3
commit 2c266a96c8
3 changed files with 27 additions and 2 deletions
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26
src/sat/smt/array_axioms.cpp
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@ -532,19 +532,22 @@ namespace array {
if (!get_config().m_array_delay_exp_axiom)
return false;
unsigned num_vars = get_num_vars();
bool change = false;
for (unsigned v = 0; v < num_vars; v++) {
propagate_parent_select_axioms(v);
auto& d = get_var_data(v);
if (!d.m_prop_upward)
continue;
euf::enode* n = var2enode(v);
if (add_as_array_eqs(n))
change = true;
bool has_default = false;
for (euf::enode* p : euf::enode_parents(n))
has_default |= a.is_default(p->get_expr());
if (has_default)
propagate_parent_default(v);
}
bool change = false;
unsigned sz = m_axiom_trail.size();
m_delay_qhead = 0;
@ -557,6 +560,27 @@ namespace array {
return change;
}
bool solver::add_as_array_eqs(euf::enode* n) {
func_decl* f = nullptr;
bool change = false;
if (!a.is_as_array(n->get_expr(), f))
return false;
for (unsigned i = 0; i < ctx.get_egraph().enodes_of(f).size(); ++i) {
euf::enode* p = ctx.get_egraph().enodes_of(f)[i];
expr_ref_vector select(m);
select.push_back(n->get_expr());
for (expr* arg : *to_app(p->get_expr()))
select.push_back(arg);
expr_ref _e(a.mk_select(select.size(), select.data()), m);
euf::enode* e = e_internalize(_e);
if (e->get_root() != p->get_root()) {
add_unit(eq_internalize(_e, p->get_expr()));
change = true;
}
}
return change;
}
bool solver::add_interface_equalities() {
sbuffer<theory_var> roots;
collect_defaults();