Goal:
  
  A : Type
  P : nat → A → Type
  k : nat
  h : ∀ (i : nat) (x : A), nth_error [] i = Some x → P (k + i) x
  ============================
   (Alli P k [])


DEBUG:Going to execute:
<coq-core.plugins.ltac::constructor@0>
DEBUG LTAC Evaluated term: l