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fix double override bug in bv_lookahead, integrate with bv_eval

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This commit is contained in:
Nikolaj Bjorner 2024-12-27 12:26:11 -08:00
parent 8de0005ab3
commit b0eee16109
9 changed files with 128 additions and 56 deletions
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34
src/ast/sls/sls_bv_lookahead.h
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@ -24,23 +24,38 @@ namespace sls {
class bv_eval;
class bv_lookahead {
struct config {
double cb = 2.85;
};
struct update {
expr* e;
double score;
bvect value;
};
struct stats {
unsigned m_num_lookahead = 0;
unsigned m_num_updates = 0;
};
bv_util bv;
bv_eval& m_ev;
context& ctx;
ast_manager& m;
config m_config;
stats m_stats;
bvect m_v_saved, m_v_updated;
svector<double> m_prob_break;
ptr_vector<expr> m_restore;
vector<ptr_vector<expr>> m_update_stack;
vector<ptr_vector<app>> m_update_stack;
expr_mark m_on_restore, m_in_update_stack;
struct update {
expr* e;
double score;
bvect value;
};
vector<update> m_updates;
unsigned m_num_updates = 0;
void reset_updates() { m_num_updates = 0; }
void add_update(double score, expr* e, bvect const& value) {
if (m_num_updates == m_updates.size())
m_updates.push_back({ e, score, value });
@ -65,13 +80,18 @@ namespace sls {
void add_updates(expr* e);
void apply_update(expr* e, bvect const& new_value);
bool apply_update();
bool apply_random_update(ptr_vector<expr> const& vars);
void display_updates(std::ostream& out);
public:
bv_lookahead(bv_eval& ev);
bool on_restore(expr* e) const;
bool try_repair_down(app* e);
void collect_statistics(statistics& st) const;
};
}