fact: Definition BDDneg_memo_OK_2 (cfg : BDDconfig) (memo : BDDneg_memo) := forall (node node' : ad) (bound : nat), BDDneg_memo_lookup memo node = Some node' -> (is_internal_node cfg node -> nat_of_N (var cfg node) < bound) -> config_node_OK cfg node /\ BDDneg_2 cfg node bound = (cfg, node').
imports: Bool Sumbool Arith ZArith NArith Nnat Ndec Ndigits IntMap(Allmaps) Wf_nat BDDvar_ad_nat bdd1 bdd2 bdd3 bdd4