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limit the size of expressions in Grobner

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-12-16 11:24:14 -10:00
parent 7ddcfcafad
commit 26956cafb0
3 changed files with 29 additions and 20 deletions
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10
src/math/lp/nla_grobner.h
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@ -89,15 +89,15 @@ private:
bool m_changed_leading_term;
equation_set m_all_eqs;
unsigned m_grobner_eqs_threshold;
unsigned m_superposed_exp_size_limit;
unsigned m_expr_size_limit;
public:
grobner_core(nex_creator& nc, reslimit& lim, unsigned eqs_threshold, unsigned superposed_expr_size_limit) :
grobner_core(nex_creator& nc, reslimit& lim, unsigned eqs_threshold, unsigned expr_size_limit) :
m_nex_creator(nc),
m_limit(lim),
m_dep_manager(m_val_manager, m_alloc),
m_changed_leading_term(false),
m_grobner_eqs_threshold(eqs_threshold),
m_superposed_exp_size_limit(superposed_expr_size_limit)
m_expr_size_limit(expr_size_limit)
{}
~grobner_core();
@ -159,7 +159,9 @@ private:
std::ostream& print_stats(std::ostream&) const;
std::ostream& display_dependency(std::ostream& out, common::ci_dependency*) const;
bool equation_is_too_complex(const equation* eq) const {
return eq->expr()->size() > m_expr_size_limit;
}
#ifdef Z3DEBUG
bool test_find_b_c(const nex* ab, const nex* ac, const nex_mul* b, const nex_mul* c);
bool test_find_b(const nex* ab, const nex_mul* b);