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persist dio handler

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2024-11-26 19:34:52 -08:00 • committed by Lev Nachmanson
parent 2c8a6f83e4
commit deac00ada3
2 changed files with 12 additions and 9 deletions
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11
src/math/lp/dioph_eq.cpp
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@ -236,9 +236,8 @@ namespace lp {
std_vector<unsigned> m_fresh_definitions; // seems only needed in the debug
// version in remove_fresh_vars
unsigned m_conflict_index =
-1; // m_entries[m_conflict_index] gives the conflict
unsigned m_max_number_of_iterations = 1000;
unsigned m_conflict_index = -1; // m_entries[m_conflict_index] gives the conflict
unsigned m_max_number_of_iterations = 100;
unsigned m_number_of_iterations;
struct branch {
unsigned m_j = UINT_MAX;
@ -355,6 +354,8 @@ namespace lp {
m_entries.clear();
m_var_register.clear();
m_number_of_iterations = 0;
m_branch_stack.clear();
m_lra_level = 0;
for (unsigned j = 0; j < lra.column_count(); j++) {
if (!lra.column_is_int(j) || !lra.column_has_term(j))
continue;
@ -1102,7 +1103,9 @@ namespace lp {
if (ret == lia_move::sat || ret == lia_move::conflict) {
return ret;
}
SASSERT(ret == lia_move::undef);
SASSERT(ret == lia_move::undef);
m_max_number_of_iterations = std::max((unsigned)5, (unsigned)m_max_number_of_iterations/2);
return lia_move::undef;
}

10
src/math/lp/int_solver.cpp
View file

@ -34,6 +34,7 @@ namespace lp {
int_solver& lia;
lar_solver& lra;
lar_core_solver& lrac;
dioph_eq m_dio;
unsigned m_number_of_calls = 0;
lar_term m_t; // the term to return in the cut
bool m_upper; // cut is an upper bound
@ -48,7 +49,7 @@ namespace lp {
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_dio(lia) {
m_hnf_cut_period = settings().hnf_cut_period();
m_dioph_eq_period = settings().m_dioph_eq_period;
}
@ -169,18 +170,17 @@ namespace lp {
}
lia_move solve_dioph_eq() {
dioph_eq de(lia);
lia_move r = de.check();
lia_move r = m_dio.check();
if (r == lia_move::conflict) {
de.explain(*this->m_ex);
m_dio.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;
}
return r;
return r;
}
lp_settings& settings() { return lra.settings(); }