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switch models for multiple box objectives. Feature request at codeplex issue 194, George Karpenov. Usage model is same as Pareto fronts you call check-sat multiple times until retrieving unsat

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Signed-off-by: Nikolaj Bjorner <nbjorner@hotmail.com>
This commit is contained in:
Nikolaj Bjorner 2015-04-01 16:21:56 -07:00
parent 52619b9dbb
commit f8d04118d8
6 changed files with 40 additions and 5 deletions
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4
src/opt/opt_solver.h
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@ -76,6 +76,7 @@ namespace opt {
bool m_objective_enabled;
svector<smt::theory_var> m_objective_vars;
vector<inf_eps> m_objective_values;
sref_vector<model> m_models;
sort_ref_vector m_objective_sorts;
svector<bool> m_valid_objectives;
bool m_dump_benchmarks;
@ -94,7 +95,7 @@ namespace opt {
virtual void pop_core(unsigned n);
virtual lbool check_sat_core(unsigned num_assumptions, expr * const * assumptions);
virtual void get_unsat_core(ptr_vector<expr> & r);
virtual void get_model(model_ref & _m);
virtual void get_model(model_ref & _m);
virtual proof * get_proof();
virtual std::string reason_unknown() const;
virtual void get_labels(svector<symbol> & r);
@ -111,6 +112,7 @@ namespace opt {
void maximize_objectives(expr_ref_vector& blockers);
inf_eps const & saved_objective_value(unsigned obj_index);
inf_eps current_objective_value(unsigned obj_index);
model* get_model(unsigned obj_index) { return m_models[obj_index]; }
bool objective_is_model_valid(unsigned obj_index) const {
return m_valid_objectives[obj_index];
}