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limit explosiion of expressions in Grobner, allow rows containing free vars to Grobner

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2019-12-15 10:58:03 -10:00
parent fb69139daa
commit 7ddcfcafad
3 changed files with 40 additions and 17 deletions
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8
src/math/lp/nla_grobner.h
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@ -89,13 +89,15 @@ private:
bool m_changed_leading_term;
equation_set m_all_eqs;
unsigned m_grobner_eqs_threshold;
unsigned m_superposed_exp_size_limit;
public:
grobner_core(nex_creator& nc, reslimit& lim, unsigned eqs_threshold) :
grobner_core(nex_creator& nc, reslimit& lim, unsigned eqs_threshold, unsigned superposed_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_grobner_eqs_threshold(eqs_threshold),
m_superposed_exp_size_limit(superposed_expr_size_limit)
{}
~grobner_core();
@ -179,7 +181,7 @@ private:
void add_var_and_its_factors_to_q_and_collect_new_rows(lpvar j, svector<lpvar>& q);
void init();
void compute_basis();
std::unordered_set<lpvar> grobner::get_vars_of_expr_with_opening_terms(const nex* e);
std::unordered_set<lpvar> get_vars_of_expr_with_opening_terms(const nex* e);
void display_matrix(std::ostream & out) const;
std::ostream& display(std::ostream& out) const { return m_gc.display(out); }
void add_row(unsigned);