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adding maxlex, throttle use of asymmetric literal addition

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2019-01-24 19:26:44 -08:00
parent 8da1d6070b
commit ad81fee118
9 changed files with 274 additions and 27 deletions
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13
src/opt/maxsmt.h
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@ -59,10 +59,13 @@ namespace opt {
struct soft {
expr_ref s;
rational weight;
bool is_true;
soft(expr_ref const& s, rational const& w, bool t): s(s), weight(w), is_true(t) {}
soft(soft const& other):s(other.s), weight(other.weight), is_true(other.is_true) {}
soft& operator=(soft const& other) { s = other.s; weight = other.weight; is_true = other.is_true; return *this; }
lbool value;
void set_value(bool t) { value = t?l_true:l_undef; }
void set_value(lbool t) { value = t; }
bool is_true() const { return value == l_true; }
soft(expr_ref const& s, rational const& w, bool t): s(s), weight(w), value(t?l_true:l_undef) {}
soft(soft const& other):s(other.s), weight(other.weight), value(other.value) {}
soft& operator=(soft const& other) { s = other.s; weight = other.weight; value = other.value; return *this; }
};
ast_manager& m;
maxsat_context& m_c;
@ -84,7 +87,7 @@ namespace opt {
~maxsmt_solver_base() override {}
rational get_lower() const override { return m_lower; }
rational get_upper() const override { return m_upper; }
bool get_assignment(unsigned index) const override { return m_soft[index].is_true; }
bool get_assignment(unsigned index) const override { return m_soft[index].is_true(); }
void collect_statistics(statistics& st) const override { }
void get_model(model_ref& mdl, svector<symbol>& labels) override { mdl = m_model.get(); labels = m_labels;}
virtual void commit_assignment();