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adjust the frequency of dio calls

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2025-05-14 08:17:39 -07:00
parent 15a3818fce
commit f680242620
3 changed files with 15 additions and 12 deletions
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16
src/math/lp/int_solver.cpp
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@ -43,13 +43,15 @@ namespace lp {
unsigned m_hnf_cut_period;
dioph_eq m_dio;
int_gcd_test m_gcd;
unsigned m_initial_dio_calls_period;
bool column_is_int_inf(unsigned j) const {
return lra.column_is_int(j) && (!lia.value_is_int(j));
}
imp(int_solver& lia): lia(lia), lra(lia.lra), lrac(lia.lrac), m_hnf_cutter(lia), m_dio(lia), m_gcd(lia) {
m_hnf_cut_period = settings().hnf_cut_period();
m_initial_dio_calls_period = settings().dio_calls_period();
}
bool has_lower(unsigned j) const {
@ -173,8 +175,18 @@ namespace lp {
if (r == lia_move::conflict) {
m_dio.explain(*this->m_ex);
lia.settings().dio_calls_period() = m_initial_dio_calls_period;
lia.settings().dio_enable_gomory_cuts() = false;
lia.settings().set_run_gcd_test(false);
return lia_move::conflict;
}
}
if (r == lia_move::undef) {
lia.settings().dio_calls_period() *= 2;
if (lra.settings().dio_calls_period() >= 16) {
lia.settings().dio_enable_gomory_cuts() = true;
lia.settings().set_run_gcd_test(true);
}
}
return r;
}