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add HS and unit literal reward schemes

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-09-19 12:02:50 -07:00
parent 651587ce01
commit 3c4ac9aee5
2 changed files with 77 additions and 55 deletions
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12
src/sat/sat_lookahead.h
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@ -66,6 +66,12 @@ namespace sat {
friend class ccc;
friend class ba_solver;
enum reward_t {
ternary_reward,
unit_literal_reward,
heule_schur_reward
};
struct config {
double m_dl_success;
double m_alpha;
@ -76,7 +82,7 @@ namespace sat {
double m_delta_rho;
unsigned m_dl_max_iterations;
unsigned m_tc1_limit;
bool m_use_ternary_reward;
reward_t m_reward_type;
config() {
m_max_hlevel = 50;
@ -87,7 +93,7 @@ namespace sat {
m_delta_rho = (double)0.9995;
m_dl_max_iterations = 32;
m_tc1_limit = 10000000;
m_use_ternary_reward = true;
m_reward_type = ternary_reward;
}
};
@ -389,7 +395,7 @@ namespace sat {
bool push_lookahead2(literal lit, unsigned level);
void push_lookahead1(literal lit, unsigned level);
void pop_lookahead1(literal lit);
double mix_diff(double l, double r) const { return l + r + (1 << 10) * l * r; }
double mix_diff(double l, double r) const;
clause const& get_clause(watch_list::iterator it) const;
bool is_nary_propagation(clause const& c, literal l) const;
void propagate_clauses(literal l);