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add back max_occs parameter dependency to solve-eqs

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This commit is contained in:
Nikolaj Bjorner 2023-03-01 20:40:22 -08:00
parent acd2eaa390
commit 94b79eefea
2 changed files with 48 additions and 1 deletions
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42
src/ast/simplifiers/solve_eqs.cpp
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@ -262,6 +262,48 @@ namespace euf {
}
}
void solve_eqs::collect_num_occs(expr * t, expr_fast_mark1 & visited) {
ptr_buffer<app, 128> stack;
auto visit = [&](expr* arg) {
if (is_uninterp_const(arg)) {
m_num_occs.insert_if_not_there(arg, 0)++;
}
if (!visited.is_marked(arg) && is_app(arg)) {
visited.mark(arg, true);
stack.push_back(to_app(arg));
}
};
visit(t);
while (!stack.empty()) {
app * t = stack.back();
stack.pop_back();
for (expr* arg : *t)
visit(arg);
}
}
void solve_eqs::collect_num_occs() {
if (m_config.m_max_occs == UINT_MAX)
return; // no need to compute num occs
m_num_occs.reset();
expr_fast_mark1 visited;
for (unsigned i : indices())
collect_num_occs(m_fmls[i].fml(), visited);
}
// Check if the number of occurrences of t is below the specified threshold :solve-eqs-max-occs
bool solve_eqs::check_occs(expr * t) const {
if (m_config.m_max_occs == UINT_MAX)
return true;
unsigned num = 0;
m_num_occs.find(t, num);
TRACE("solve_eqs_check_occs", tout << mk_ismt2_pp(t, m_manager) << " num_occs: " << num << " max: " << m_max_occs << "\n";);
return num <= m_config.m_max_occs;
}
void solve_eqs::save_subst(vector<dependent_expr> const& old_fmls) {
if (!m_subst->empty())
m_fmls.model_trail().push(m_subst.detach(), old_fmls);