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add EUF plugin framework.

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plugin setting allows adding equality saturation within the E-graph propagation without involving externalizing theory solver dispatch. It makes equality saturation independent of SAT integration.
Add a special relation operator to support ad-hoc AC symbols.
This commit is contained in:
Nikolaj Bjorner 2023-11-30 13:58:24 -08:00
parent 5784c2da79
commit b52fd8d954
28 changed files with 3063 additions and 68 deletions
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11
src/ast/euf/euf_enode.cpp
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@ -93,6 +93,17 @@ namespace euf {
return null_theory_var;
}
enode* enode::get_closest_th_node(theory_id id) {
enode* n = this;
while (n) {
theory_var v = n->get_th_var(id);
if (v != null_theory_var)
return n;
n = n->m_target;
}
return nullptr;
}
bool enode::acyclic() const {
enode const* n = this;
enode const* p = this;