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fallback to Gomory cuts and gcd conflicts if dio fails

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2025-04-21 17:10:32 -07:00
parent cc1bb0a255
commit a1673f2bdd
3 changed files with 7 additions and 19 deletions
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18
src/math/lp/lp_settings.h
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@ -133,13 +133,7 @@ struct statistics {
unsigned m_fixed_eqs = 0;
unsigned m_dio_calls = 0;
unsigned m_dio_tighten_conflicts = 0;
unsigned m_dio_branch_iterations= 0;
unsigned m_dio_branching_depth = 0;
unsigned m_dio_branch_from_proofs = 0;
unsigned m_dio_branching_infeasibles = 0;
unsigned m_dio_rewrite_conflicts = 0;
unsigned m_dio_branching_sats = 0;
unsigned m_dio_branching_conflicts = 0;
unsigned m_bounds_tightening_conflicts = 0;
unsigned m_bounds_tightenings = 0;
::statistics m_st = {};
@ -176,14 +170,7 @@ struct statistics {
st.update("arith-bounds-improvements", m_nla_bounds_improvements);
st.update("arith-dio-calls", m_dio_calls);
st.update("arith-dio-tighten-conflicts", m_dio_tighten_conflicts);
st.update("arith-dio-branch-iterations", m_dio_branch_iterations);
st.update("arith-dio-branch-depths", m_dio_branching_depth);
st.update("arith-dio-branch-from-proofs", m_dio_branch_from_proofs);
st.update("arith-dio-branching-infeasibles", m_dio_branching_infeasibles);
st.update("arith-dio-rewrite-conflicts", m_dio_rewrite_conflicts);
st.update("arith-dio-branching-sats", m_dio_branching_sats);
st.update("arith-dio-branching-depth", m_dio_branching_depth);
st.update("arith-dio-branching-conflicts", m_dio_branching_conflicts);
st.update("arith-bounds-tightening-conflicts", m_bounds_tightening_conflicts);
st.update("arith-bounds-tightenings", m_bounds_tightenings);
st.copy(m_st);
@ -261,8 +248,6 @@ private:
bool m_dio = false;
bool m_dio_enable_gomory_cuts = false;
bool m_dio_enable_hnf_cuts = true;
unsigned m_dio_branching_period = 100; // do branching rarely
unsigned m_dio_report_branch_with_term_tigthening_period = 10000000; // period of reporting the branch with term tigthening
bool m_dump_bound_lemmas = false;
bool m_dio_ignore_big_nums = false;
unsigned m_dio_calls_period = 4;
@ -277,13 +262,12 @@ public:
unsigned random_next() { return m_rand(); }
unsigned random_next(unsigned u ) { return m_rand(u); }
bool dio() { return m_dio; }
bool & dio_enable_gomory_cuts() { return m_dio_enable_gomory_cuts; }
bool dio_enable_gomory_cuts() const { return m_dio && m_dio_enable_gomory_cuts; }
bool dio_run_gcd() const { return m_dio && m_dio_run_gcd; }
bool dio_enable_hnf_cuts() const { return m_dio && m_dio_enable_hnf_cuts; }
unsigned dio_branching_period() const { return m_dio_branching_period; }
bool dio_ignore_big_nums() const { return m_dio_ignore_big_nums; }
void set_random_seed(unsigned s) { m_rand.set_seed(s); }
unsigned dio_report_branch_with_term_tigthening_period() const { return m_dio_report_branch_with_term_tigthening_period; }
bool bound_progation() const {
return m_bound_propagation;
}