val get_selecting_states : t -> StateSet.t
(** return the set of selecting states of the automaton *)
-val get_states_by_rank : t -> StateSet.t array
-(** return an array of states ordered by ranks.
+val get_states_by_rank : t -> (StateSet.t*StateSet.t) array
+(** return an array of states (sources, states) ordered by ranks.
*)
val get_max_rank : t -> int