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adding lookahead and lemmas

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2017-06-01 14:49:54 -07:00
parent 7d245be4e1
commit 4e65c13726
13 changed files with 203 additions and 1 deletions
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6
src/solver/solver.cpp
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@ -162,3 +162,9 @@ bool solver::is_literal(ast_manager& m, expr* e) {
return is_uninterp_const(e) || (m.is_not(e, e) && is_uninterp_const(e));
}
expr_ref solver::lookahead(expr_ref_vector const& candidates) {
ast_manager& m = candidates.get_manager();
return expr_ref(m.mk_true(), m);
}

11
src/solver/solver.h
View file

@ -172,6 +172,17 @@ public:
*/
virtual lbool preferred_sat(expr_ref_vector const& asms, vector<expr_ref_vector>& cores);
/**
\brief extract a lookahead candidates for branching.
*/
virtual expr_ref lookahead(expr_ref_vector const& candidates);
/**
\brief extract learned lemmas.
*/
virtual void get_lemmas(expr_ref_vector& lemmas) {}
/**
\brief Display the content of this solver.
*/