Goal:
    A : Type  B : Type  a : A  l : list A  P : B → Type  H : S #|l| = 0
  ============================
   False


DEBUG:Going to execute:
intros; Zify.zify_pre_hook; zify_elim_let; zify_op;
            Zify.zify_iter_specs; Zify.zify_to_euclidean_division_equations;
            Zify.zify_post_hook