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more ematching

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This commit is contained in:
Nikolaj Bjorner 2021-01-29 13:39:14 -08:00
parent 41a4d102f4
commit 4af9132f2e
12 changed files with 263 additions and 108 deletions
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27
src/ast/euf/euf_egraph.cpp
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@ -286,6 +286,10 @@ namespace euf {
m_updates.push_back(update_record(n, update_record::value_assignment()));
}
void egraph::set_lbl_hash(enode* n) {
NOT_IMPLEMENTED_YET();
}
void egraph::pop(unsigned num_scopes) {
if (num_scopes <= m_num_scopes) {
m_num_scopes -= num_scopes;
@ -654,6 +658,27 @@ namespace euf {
explain_todo(justifications);
}
template <typename T>
unsigned egraph::explain_diseq(ptr_vector<T>& justifications, enode* a, enode* b) {
enode* ra = a->get_root(), * rb = b->get_root();
SASSERT(ra != rb);
if (ra->interpreted() && rb->interpreted()) {
explain_eq(justifications, a, ra);
explain_eq(justifications, b, rb);
return UINT_MAX;
}
expr_ref eq(m.mk_eq(a->get_expr(), b->get_expr()), m);
m_tmp_eq->m_args[0] = a;
m_tmp_eq->m_args[1] = b;
m_tmp_eq->m_expr = eq;
SASSERT(m_tmp_eq->num_args() == 2);
enode* r = m_table.find(m_tmp_eq);
SASSERT(r && r->get_root()->value() == l_false);
explain_eq(justifications, r, r->get_root());
return r->get_root()->bool_var();
}
template <typename T>
void egraph::explain_todo(ptr_vector<T>& justifications) {
for (unsigned i = 0; i < m_todo.size(); ++i) {
@ -771,10 +796,12 @@ namespace euf {
template void euf::egraph::explain(ptr_vector<int>& justifications);
template void euf::egraph::explain_todo(ptr_vector<int>& justifications);
template void euf::egraph::explain_eq(ptr_vector<int>& justifications, enode* a, enode* b);
template unsigned euf::egraph::explain_diseq(ptr_vector<int>& justifications, enode* a, enode* b);
template void euf::egraph::explain(ptr_vector<size_t>& justifications);
template void euf::egraph::explain_todo(ptr_vector<size_t>& justifications);
template void euf::egraph::explain_eq(ptr_vector<size_t>& justifications, enode* a, enode* b);
template unsigned euf::egraph::explain_diseq(ptr_vector<size_t>& justifications, enode* a, enode* b);