(motive : Mathlib.Tactic.LinearCombination'.Expanded → Sort u_1) →
  (__do_lift : Mathlib.Tactic.LinearCombination'.Expanded) →
    ((c : Lean.Term) → motive (Mathlib.Tactic.LinearCombination'.Expanded.const c)) →
      ((p : Lean.Term) → motive (Mathlib.Tactic.LinearCombination'.Expanded.proof p)) → motive __do_lift