Goal:
  
  A : Type
  B : Type
  f : nat → A → B
  g : nat → A → B
  k : nat
  Hl : ∀ (k' : nat) (x : A), k' < k + #|[]| → f k' x = g k' x
  ============================
   (∀ k0 : nat, k0 ≤ k → [] = [])


DEBUG:Going to execute:
<coq-core.plugins.ltac::auto@0> $1 $2 $3
DEBUG LTAC Evaluated term: (Nat.le_refl k)
DEBUG LTAC Evaluated term: k
DEBUG LTAC Evaluated term: l