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add anf

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2020-01-02 18:02:53 -08:00
parent bd5670a30b
commit 40a4326ad4
20 changed files with 860 additions and 465 deletions
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4
src/sat/sat_solver_core.h
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@ -63,7 +63,9 @@ namespace sat {
add_clause(3, lits, is_redundant);
}
// create boolean variable, tagged as external (= true) or internal (can be eliminated).
virtual bool_var add_var(bool ext) = 0;
// the level indicates the depth in an ast the variable comes from.
// variables of higher levels are outputs gates relative to lower levels
virtual bool_var add_var(bool ext, unsigned level = 0) = 0;
// update parameters
virtual void updt_params(params_ref const& p) {}