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integrating changes of Nikolaj with m_empty_clause etc.

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-12-09 10:43:03 -10:00
parent 15dff85b22
commit f939a26c86
7 changed files with 34 additions and 22 deletions
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10
src/math/lp/nla_intervals.cpp
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@ -244,19 +244,19 @@ intervals::interv intervals::interval_of_mul(const nex_mul* e) {
return a;
}
bool intervals::check_cross_nested_expr(const nex* n, ci_dependency* initial_deps) {
TRACE("nla_intervals", tout << "cross-nested n = " << *n << ", n->type() == " << n->type() << "\n";);
// return true iff the interval of n is does not contain 0
bool intervals::check_nex(const nex* n, ci_dependency* initial_deps) {
TRACE("nla_grobner", tout << "cross-nested n = " << *n << ", n->type() == " << n->type() << "\n";);
m_core->lp_settings().stats().m_cross_nested_forms++;
auto i = interval_of_expr(n, 1);
TRACE("nla_intervals", tout << "callback n = " << *n << "\ni="; display(tout, i) << "\n";);
TRACE("nla_grobner", tout << "callback n = " << *n << "\ni="; display(tout, i) << "\n";);
if (!separated_from_zero(i)) {
reset();
return false;
}
auto interv_wd = interval_of_expr_with_deps(n, 1);
TRACE("nla_intervals", tout << "conflict: interv_wd = "; display(tout, interv_wd ) << *n << "\n";);
TRACE("nla_grobner", tout << "conflict: interv_wd = "; display(tout, interv_wd ) << *n << "\n";);
check_interval_for_conflict_on_zero(interv_wd, initial_deps);
reset(); // clean the memory allocated by the interval bound dependencies
return true;