{motive : Lean.Kernel.Exception → Sort u} →
  (t : Lean.Kernel.Exception) →
    t.ctorIdx = 11 →
      ((env : Lean.Kernel.Environment) →
          (name : Lean.Name) → (type : Lean.Expr) → motive (Lean.Kernel.Exception.thmTypeIsNotProp env name type)) →
        motive t