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add unit walk engine

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-12-17 16:09:07 -08:00
parent 5adfae0fa8
commit a5b663c52d
16 changed files with 604 additions and 47 deletions
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1
src/sat/sat_extension.h
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@ -52,6 +52,7 @@ namespace sat {
virtual ~extension() {}
virtual void set_solver(solver* s) = 0;
virtual void set_lookahead(lookahead* s) = 0;
virtual void set_unit_walk(unit_walk* u) = 0;
virtual bool propagate(literal l, ext_constraint_idx idx) = 0;
virtual double get_reward(literal l, ext_constraint_idx idx, literal_occs_fun& occs) const = 0;
virtual void get_antecedents(literal l, ext_justification_idx idx, literal_vector & r) = 0;