(motive : Mathlib.Tactic.IntervalCases.Bound → Sort u_1) →
  (x : Mathlib.Tactic.IntervalCases.Bound) →
    ((n : ℤ) → motive (Mathlib.Tactic.IntervalCases.Bound.lt n)) →
      ((n : ℤ) → motive (Mathlib.Tactic.IntervalCases.Bound.le n)) → motive x