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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-08-04 17:08:08 -07:00
parent 1dc8089e6e
commit ec2e9105d3
5 changed files with 33 additions and 43 deletions
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10
src/math/polysat/fixplex.h
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@ -47,7 +47,7 @@ namespace polysat {
virtual void add_le(var_t v, var_t w, unsigned dep) = 0;
virtual void add_lt(var_t v, var_t w, unsigned dep) = 0;
virtual void restore_ineq() = 0;
virtual void get_infeasible_deps(unsigned_vector& deps) = 0;
virtual unsigned_vector const& get_unsat_core() const = 0;
};
@ -160,7 +160,7 @@ namespace polysat {
unsigned m_blands_rule_threshold { 1000 };
random_gen m_random;
uint_set m_left_basis;
unsigned m_infeasible_var { null_var };
unsigned_vector m_unsat_core;
unsigned_vector m_base_vars;
stats m_stats;
vector<stashed_bound> m_stashed_bounds;
@ -211,12 +211,10 @@ namespace polysat {
void add_row(var_t base, unsigned num_vars, var_t const* vars, numeral const* coeffs);
void get_infeasible_deps(unsigned_vector& deps) override;
unsigned_vector const& get_unsat_core() const override { return m_unsat_core; }
private:
row get_infeasible_row();
std::ostream& display_row(std::ostream& out, row const& r, bool values = true);
var_t get_base_var(row const& r) const { return m_rows[r.id()].m_base; }
@ -267,6 +265,8 @@ namespace polysat {
void check_blands_rule(var_t v, unsigned& num_repeated);
pivot_strategy_t pivot_strategy() { return m_bland ? S_BLAND : S_DEFAULT; }
var_t select_error_var(bool least);
void set_infeasible_base(var_t v);
void set_infeasible_bounds(var_t v);
// facilities for handling inequalities
void add_ineq(var_t v, var_t w, unsigned dep, bool strict);