Goal:
    A : Type  P : nat → A → Type  n : nat  Γ : list A
  ============================
   (Alli P n (List.rev Γ) → Alli P n (List.rev Γ))


DEBUG:Going to execute:
solve
[ trivial
with eq_true
| reflexivity
| symmetry; trivial
| contradiction
| congruence ]