∀ {lhs : ℕ} {rhs : Lean.Meta.Grind.CnstrRHS} {lhs_1 : ℕ} {rhs_1 : Lean.Meta.Grind.CnstrRHS},
  Lean.Meta.Grind.EMatchTheoremConstraint.notDefEq lhs rhs =
      Lean.Meta.Grind.EMatchTheoremConstraint.notDefEq lhs_1 rhs_1 →
    lhs = lhs_1 ∧ rhs = rhs_1