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gomory cut worked on a toy example

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Signed-off-by: Lev Nachmanson <levnach@microsoft.com>
This commit is contained in:
Lev Nachmanson 2017-07-19 16:50:23 -07:00
parent 94b3fee6ac
commit 4d1b0d8026
4 changed files with 104 additions and 62 deletions
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4
src/util/lp/int_solver.h
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@ -106,6 +106,8 @@ private:
void move_non_base_vars_to_bounds();
void branch_infeasible_int_var(unsigned);
lia_move mk_gomory_cut(lar_term& t, mpq& k,explanation & ex);
lia_move report_conflict_from_gomory_cut(mpq & k);
lia_move report_gomory_cut(lar_term& t, mpq& k, mpq& lcm_den, unsigned num_ints);
void init_check_data();
bool constrain_free_vars(linear_combination_iterator<mpq> * r);
lia_move proceed_with_gomory_cut(lar_term& t, mpq& k, explanation& ex);
@ -129,5 +131,7 @@ private:
constraint_index column_upper_bound_constraint(unsigned j) const;
constraint_index column_low_bound_constraint(unsigned j) const;
void display_row_info(std::ostream & out, unsigned row_index) const;
void gomory_cut_adjust_t_and_k_for_size_1(const vector<std::pair<mpq, unsigned>> & pol, lar_term & t, mpq &k);
void gomory_cut_adjust_t_and_k_for_size_gt_1(vector<std::pair<mpq, unsigned>> & pol, lar_term & t, mpq &k, unsigned num_ints, mpq &lcm_den);
};
}