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lp: add lp.random_cut_period to toggle randomized cut/cube gates

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Introduce the boolean lp.random_cut_period parameter (default true).
When enabled, the periodic integer heuristic gates (find_cube, lcube,
hnf, gomory, dio) fire at random with the same 1/period expected rate;
when disabled they fall back to the deterministic every-k-th-call
modulus on m_number_of_calls. The shared hit_period() helper centralizes
this decision, and m_number_of_calls is restored for the deterministic
path.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
This commit is contained in:
Lev Nachmanson 2026-06-19 07:38:06 -07:00
parent 029ce10d22
commit 30dc804d25
4 changed files with 26 additions and 14 deletions
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3
src/math/lp/lp_settings.h
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@ -264,6 +264,7 @@ private:
bool m_dio_ignore_big_nums = false;
unsigned m_dio_calls_period = 4;
bool m_dio_run_gcd = true;
bool m_random_cut_period = true;
bool m_lcube = true;
unsigned m_lcube_flips = 16;
public:
@ -271,6 +272,8 @@ public:
unsigned lcube_flips() const { return m_lcube_flips; }
unsigned dio_calls_period() const { return m_dio_calls_period; }
unsigned & dio_calls_period() { return m_dio_calls_period; }
bool random_cut_period() const { return m_random_cut_period; }
bool & random_cut_period() { return m_random_cut_period; }
bool print_external_var_name() const { return m_print_external_var_name; }
bool propagate_eqs() const { return m_propagate_eqs;}
unsigned hnf_cut_period() const { return m_hnf_cut_period; }