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A rudimentary version of MathSAT optimization

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Remarks:
(1) The core procedure accepts maximization only
(2) Add lazy initialization to min_maximize_cmd
(3) The procedure isn't working with composite objective yet.
This commit is contained in:
Anh-Dung Phan 2013-10-18 18:00:24 -07:00
parent 898609a3ef
commit a44044fb15
8 changed files with 114 additions and 33 deletions
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5
src/smt/theory_arith.h
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@ -855,6 +855,7 @@ namespace smt {
theory_var pick_var_to_leave(theory_var x_j, bool inc, numeral & a_ij, inf_numeral & gain);
template<bool invert>
void add_tmp_row_entry(row & r, numeral const & coeff, theory_var v);
bool max_min(theory_var v, bool max);
bool max_min(row & r, bool max);
bool max_min(svector<theory_var> const & vars);
@ -991,8 +992,10 @@ namespace smt {
// Optimization
//
// -----------------------------------
virtual bool max_min(theory_var v, bool max);
virtual bool max(theory_var v) { return max_min(v, true); }
virtual theory_var add_objective(app* term);
virtual optional<rational> get_objective_value(theory_var v);
inf_rational m_objective;
// -----------------------------------
//