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elaborating on local-search rephase strategy

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Nikolaj Bjorner 2023-02-07 03:17:52 -08:00
parent f3ae7692ca
commit 90a75866fb
9 changed files with 131 additions and 56 deletions
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15
src/sat/sat_solver.h
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@ -87,10 +87,23 @@ namespace sat {
struct no_drat_params : public params_ref {
no_drat_params() { set_bool("drat.disable", true); }
};
struct backoff {
unsigned value = 1;
unsigned lo = 0;
unsigned hi = 0;
unsigned limit = 0;
unsigned count = 0;
void delta_effort(solver& s);
void delta_conflicts(solver& s);
};
class solver : public solver_core {
public:
struct abort_solver {};
struct backoffs {
backoff m_local_search;
};
protected:
enum search_state { s_sat, s_unsat };
@ -159,6 +172,7 @@ namespace sat {
unsigned m_search_next_toggle;
unsigned m_phase_counter;
unsigned m_best_phase_size;
backoffs m_backoffs;
unsigned m_rephase_lim;
unsigned m_rephase_inc;
unsigned m_reorder_lim;
@ -237,6 +251,7 @@ namespace sat {
friend class lut_finder;
friend class npn3_finder;
friend class proof_trim;
friend struct backoff;
public:
solver(params_ref const & p, reslimit& l);
~solver() override;