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add code to enable unit propagation of bounds

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set UNIT_PROPAGATE_BOUNDS 1 to use the unit propagation version. It applies unit propagation eagerly (does not depend on checking LIA consistency before final check) and avoid creating new literals in most cases
This commit is contained in:
Nikolaj Bjorner 2023-10-09 16:04:39 +09:00
parent 1bdf66b918
commit 4a870966ad
6 changed files with 79 additions and 56 deletions
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14
src/math/lp/nla_core.h
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@ -60,18 +60,6 @@ class core {
friend class nra::solver;
friend class divisions;
struct stats {
unsigned m_nla_explanations;
unsigned m_nla_lemmas;
unsigned m_nra_calls;
unsigned m_bounds_improvements;
stats() { reset(); }
void reset() {
memset(this, 0, sizeof(*this));
}
};
stats m_stats;
unsigned m_nlsat_delay = 50;
unsigned m_nlsat_fails = 0;
@ -139,6 +127,8 @@ public:
reslimit& reslim() { return m_reslim; }
emonics& emons() { return m_emons; }
const emonics& emons() const { return m_emons; }
monic& emon(unsigned i) { return m_emons[i]; }
monic const& emon(unsigned i) const { return m_emons[i]; }
bool has_relevant_monomial() const;