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updates to simplifier

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-10-23 01:00:06 -04:00
parent 42749e7b22
commit ee6cfb8eef
9 changed files with 365 additions and 291 deletions
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17
src/sat/sat_lookahead.h
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@ -529,6 +529,8 @@ namespace sat {
void init_config();
void normalize_parents();
public:
lookahead(solver& s) :
m_s(s),
@ -573,21 +575,6 @@ namespace sat {
*/
void simplify();
//
// there can be two sets of equivalence classes.
// example:
// a -> !b
// b -> !a
// c -> !a
// we pick as root the Boolean variable with the largest value.
//
literal get_root(bool_var v);
/**
\brief extract equivalence classes of variables and simplify clauses using these.
*/
void scc();
std::ostream& display(std::ostream& out) const;
std::ostream& display_summary(std::ostream& out) const;
model const& get_model();