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use fixed vars to explain tightening

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Signed-off-by: Lev Nachmanson <levnach@hotmail.com>
This commit is contained in:
Lev Nachmanson 2024-11-01 12:46:25 -07:00 • committed by Lev Nachmanson
parent 36293ac773
commit 30f5599064
3 changed files with 56 additions and 42 deletions
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4
src/math/lp/lar_solver.h
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@ -510,7 +510,7 @@ public:
u_dependency_manager& dep_manager() { return m_dependencies; }
inline u_dependency* get_column_upper_bound_witness(unsigned j) const {
return m_columns[j].upper_bound_witness();
return m_columns[j].upper_bound_witness();
}
inline const impq& get_upper_bound(lpvar j) const {
@ -527,6 +527,8 @@ public:
bool has_lower_bound(lpvar var, u_dependency*& ci, mpq& value, bool& is_strict) const;
bool has_upper_bound(lpvar var, u_dependency*& ci, mpq& value, bool& is_strict) const;
bool has_bound_of_type(lpvar var, u_dependency*& ci, mpq& value, bool& is_strict, bool is_upper) const;
bool has_value(lpvar var, mpq& value) const;
bool fetch_normalized_term_column(const lar_term& t, std::pair<mpq, lpvar>&) const;
bool column_is_fixed(unsigned j) const;