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 nodes_preserved_bool_fun : forall (cfg1 cfg2 : BDDconfig) (node : ad), BDDconfig_OK cfg1 -> BDDconfig_OK cfg2 -> nodes_preserved cfg1 cfg2 -> config_node_OK cfg1 node -> bool_fun_eq (bool_fun_of_BDD cfg2 node) (bool_fun_of_BDD cfg1 node).