∀ {motive : (a : Lean.Grind.Linarith.Poly) → a.NonnegCoeffs → Prop} {a : Lean.Grind.Linarith.Poly} (t : a.NonnegCoeffs),
  (∀ (a : Lean.Grind.Linarith.Poly) (t : a.NonnegCoeffs), Lean.Grind.Linarith.Poly.NonnegCoeffs.below t → motive a t) →
    motive a t