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throttle dioph equalities

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2024-10-15 18:55:38 -07:00 • committed by Lev Nachmanson
parent 128d5b4fa0
commit 392c24a145
3 changed files with 14 additions and 6 deletions
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11
src/math/lp/int_solver.cpp
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@ -41,13 +41,17 @@ namespace lp {
mpq m_k; // the right side of the cut
hnf_cutter m_hnf_cutter;
unsigned m_hnf_cut_period;
unsigned m_dioph_eq_period;
int_gcd_test m_gcd;
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_gcd(lia) {}
imp(int_solver& lia): lia(lia), lra(lia.lra), lrac(lia.lrac), m_hnf_cutter(lia), m_gcd(lia) {
m_hnf_cut_period = settings().hnf_cut_period();
m_dioph_eq_period = settings().m_dioph_eq_period;
}
bool has_lower(unsigned j) const {
switch (lrac.m_column_types()[j]) {
@ -170,11 +174,14 @@ namespace lp {
if (r == lia_move::conflict) {
de.explain(*this->m_ex);
m_dioph_eq_period = settings().m_dioph_eq_period;
return lia_move::conflict;
} else if (r == lia_move::branch) {
m_dioph_eq_period = settings().m_dioph_eq_period;
return lia_move::branch;
}
m_dioph_eq_period *= 2; // the overflow is fine, maybe to try again
return lia_move::undef;
}
@ -190,7 +197,7 @@ namespace lp {
}
bool should_solve_dioph_eq() {
return lia.settings().dio_eqs() && m_number_of_calls % settings().m_dioph_eq_period == 0;
return lia.settings().dio_eqs() && m_number_of_calls % m_dioph_eq_period == 0;
}
bool should_hnf_cut() {