∀ {α : Sort u_1} (β : Sort u) [inst : Lean.Data.AC.EvalInformation α β] (ctx : α) (x_1 : ℕ) (xs : List ℕ),
  (xs = [] → False) →
    Lean.Data.AC.evalList β ctx (x_1 :: xs) =
      Lean.Data.AC.EvalInformation.evalOp ctx (Lean.Data.AC.EvalInformation.evalVar ctx x_1)
        (Lean.Data.AC.evalList β ctx xs)