∀ {s t : Lean.Omega.Constraint} {x y : Lean.Omega.Coeffs} {a : ℤ} {j : Lean.Elab.Tactic.Omega.Justification s x} {b : ℤ}
  {k : Lean.Elab.Tactic.Omega.Justification t y} {j_1 : Lean.Elab.Tactic.Omega.Justification s x}
  {k_1 : Lean.Elab.Tactic.Omega.Justification t y},
  Lean.Elab.Tactic.Omega.Justification.combo a j b k = Lean.Elab.Tactic.Omega.Justification.combo a j_1 b k_1 →
    j = j_1 ∧ k = k_1