Definition bs_of_cfg := fst cfg.Definition share_of_cfg := fst (snd cfg).Definition fl_of_cfg := fst (snd (snd cfg)).Definition cnt_of_cfg := fst (snd (snd (snd cfg))).Definition negm_of_cfg := fst (snd (snd (snd (snd cfg)))).Definition orm_of_cfg := fst (snd (snd (snd (snd (snd cfg))))).Definition um_of_cfg := snd (snd (snd (snd (snd (snd cfg))))).

Lemma BDDunique_1 : forall (bs : BDDstate) (share : BDDsharing_map), BDDstate_OK bs -> BDDsharing_OK bs share -> forall (n : nat) (node1 node2 : ad), n = max (nat_of_N (bs_node_height bs node1)) (nat_of_N (bs_node_height bs node2)) -> node_OK bs node1 -> node_OK bs node2 -> bool_fun_eq (bool_fun_of_BDD_bs bs node1) (bool_fun_of_BDD_bs bs node2) -> node1 = node2.