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Throttle nra solver when progress is being made by linearization

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This commit is contained in:
Nikolaj Bjorner 2021-02-26 05:05:36 -08:00
parent 08f55f9d1f
commit c6eb55537a
3 changed files with 18 additions and 2 deletions
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10
src/math/lp/nla_core.cpp
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@ -1523,8 +1523,14 @@ lbool core::check(vector<lemma>& l_vec) {
{ 1, check3 }};
check_weighted(3, checks);
if (!conflict_found() && m_nla_settings.run_nra() && random() % 30 == 0) {
ret = m_nra.check();
if (!conflict_found() && m_nla_settings.run_nra() && random() % 50 == 0 &&
lp_settings().stats().m_nla_calls > 500) {
params_ref p;
p.set_uint("max_conflicts", 100);
m_nra.updt_params(p);
ret = m_nra.check();
p.set_uint("max_conflicts", UINT_MAX);
m_nra.updt_params(p);
m_stats.m_nra_calls++;
}
}