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bug fixes to elim-uncnstr2 tactic

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-11-13 13:25:19 -08:00
parent 38cde14e08
commit 3fa81d6527
2 changed files with 28 additions and 20 deletions
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12
src/ast/simplifiers/elim_unconstrained.h
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@ -32,7 +32,7 @@ class elim_unconstrained : public dependent_expr_simplifier {
elim_unconstrained& s;
var_lt(elim_unconstrained& s) : s(s) {}
bool operator()(int v1, int v2) const {
return s.get_node(v1).m_refcount < s.get_node(v2).m_refcount;
return s.is_var_lt(v1, v2);
}
};
struct stats {
@ -47,20 +47,18 @@ class elim_unconstrained : public dependent_expr_simplifier {
ptr_vector<expr> m_args;
expr_mark m_frozen;
stats m_stats;
unsigned_vector m_root;
bool operator()(int v1, int v2) const { return get_node(v1).m_refcount < get_node(v2).m_refcount; }
bool is_var_lt(int v1, int v2) const;
node& get_node(unsigned n) { return m_nodes[n]; }
node const& get_node(unsigned n) const { return m_nodes[n]; }
node& get_node(expr* t) { return m_nodes[t->get_id()]; }
node const& get_node(expr* t) const { return m_nodes[t->get_id()]; }
node& get_node(expr* t) { return m_nodes[m_root[t->get_id()]]; }
node const& get_node(expr* t) const { return m_nodes[m_root[t->get_id()]]; }
unsigned get_refcount(expr* t) const { return get_node(t).m_refcount; }
void inc_ref(expr* t) { ++get_node(t).m_refcount; if (is_uninterp_const(t)) m_heap.increased(t->get_id()); }
void dec_ref(expr* t) { --get_node(t).m_refcount; if (is_uninterp_const(t)) m_heap.decreased(t->get_id()); }
void gc(expr* t);
expr* get_parent(unsigned n) const;
void init_refcounts();
void dec_refcounts(expr* t);
void init_terms(expr_ref_vector const& terms);
void init_nodes();
void eliminate();