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track the set of integer variables that are not set to integer values

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Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
This commit is contained in:
Lev Nachmanson 2017-07-21 21:09:51 -07:00
parent 64e542bd70
commit bd4fb22665
9 changed files with 66 additions and 32 deletions
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5
src/util/lp/int_solver.h
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@ -34,13 +34,15 @@ public:
lar_solver *m_lar_solver;
int_set m_old_values_set;
vector<impq> m_old_values_data;
int_set m_inf_int_set;
unsigned m_branch_cut_counter;
linear_combination_iterator<mpq>* m_iter_on_gomory_row;
unsigned m_gomory_cut_inf_column;
bool m_found_free_var_in_gomory_row;
// methods
int_solver(lar_solver* lp);
int_set& inf_int_set();
const int_set& inf_int_set() const;
// main function to check that solution provided by lar_solver is valid for integral values,
// or provide a way of how it can be adjusted.
lia_move check(lar_term& t, mpq& k, explanation& ex);
@ -96,7 +98,6 @@ private:
const impq & get_value(unsigned j) const;
void display_column(std::ostream & out, unsigned j) const;
bool inf_int_set_is_correct() const;
void init_inf_int_set();
void update_column_in_int_inf_set(unsigned j);
bool column_is_int_inf(unsigned j) const;
void trace_inf_rows() const;