(motive : Int.Linear.Poly → Sort u_1) →
  (p : Int.Linear.Poly) →
    ((k : ℤ) → motive (Int.Linear.Poly.num k)) →
      ((k' : ℤ) → (x' : Int.Linear.Var) → (p : Int.Linear.Poly) → motive (Int.Linear.Poly.add k' x' p)) → motive p