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throttle is_compatible to check variables at most once

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-02-23 08:45:22 -08:00
parent 7b4f1ed530
commit f2e712b0d6
1 changed files with 10 additions and 2 deletions
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12
src/tactic/core/solve_eqs_tactic.cpp
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@ -65,7 +65,8 @@ class solve_eqs_tactic : public tactic {
m_a_util(m),
m_num_steps(0),
m_num_eliminated_vars(0),
m_marked_candidates(m) {
m_marked_candidates(m),
m_var_trail(m) {
updt_params(p);
if (m_r == nullptr)
m_r = mk_default_expr_replacer(m, true);
@ -524,7 +525,14 @@ class solve_eqs_tactic : public tactic {
}
}
expr_mark m_compatible_tried;
expr_ref_vector m_var_trail;
bool is_compatible(goal const& g, unsigned idx, vector<nnf_context> const & path, expr* v, expr* eq) {
if (m_compatible_tried.is_marked(v))
return false;
m_compatible_tried.mark(v);
m_var_trail.push_back(v);
expr_mark occ;
svector<lbool> cache;
mark_occurs(occ, g, v);
@ -649,7 +657,7 @@ class solve_eqs_tactic : public tactic {
for (unsigned i = 0; i < args.size(); ++i) {
pr = nullptr;
expr* arg = args.get(i), *lhs = nullptr, *rhs = nullptr;
if (m().is_eq(arg, lhs, rhs) && !m().is_bool(lhs)) {
if (m().is_eq(arg, lhs, rhs) && !m().is_bool(lhs)) {
if (trivial_solve1(lhs, rhs, var, def, pr) && is_compatible(g, idx, path, var, arg)) {
insert_solution(g, idx, arg, var, def, pr);
}