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 used_nodes_preserved_bs_bool_fun : forall (bs bs' : BDDstate) (ul : list ad) (node : ad), BDDstate_OK bs -> BDDstate_OK bs' -> used_nodes_preserved_bs bs bs' ul -> used_list_OK_bs bs ul -> used_node_bs bs ul node -> bool_fun_eq (bool_fun_of_BDD_bs bs' node) (bool_fun_of_BDD_bs bs node).