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add cube functionality

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-09-24 13:29:46 -07:00
parent ae9a6664d4
commit 82922d92f7
4 changed files with 83 additions and 58 deletions
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6
src/sat/sat_lookahead.h
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@ -444,13 +444,15 @@ namespace sat {
void assign(literal l);
void propagated(literal l);
bool backtrack(literal_vector& trail);
bool backtrack(literal_vector& trail, svector<bool> & is_decision);
lbool search();
void init_model();
std::ostream& display_binary(std::ostream& out) const;
std::ostream& display_clauses(std::ostream& out) const;
std::ostream& display_values(std::ostream& out) const;
std::ostream& display_lookahead(std::ostream& out) const;
std::ostream& display_cube(std::ostream& out) const;
std::ostream& display_cube(std::ostream& out, literal_vector const& cube) const;
void display_search_string();
void init_search();
void checkpoint();
@ -486,7 +488,7 @@ namespace sat {
If cut-depth != 0, then it is used to control the depth of cuts.
Otherwise, cut-fraction gives an adaptive threshold for creating cuts.
*/
void cube();
lbool cube();
literal select_lookahead(literal_vector const& assumptions, bool_var_vector const& vars);
/**