(* TODO: remove oneVector and replace it with Bvect_true *)
Fixpoint oneVector(n : nat) : Bvector n :=
  match n with
    | 0 => Vector.nil bool
    | S n' => Vector.cons _ true _ (oneVector n')
  end.

Theorem shiftOut_oneList : forall (n : nat), shiftOut (oneList n) n = Some (oneVector n, nil).