| n0 + m0 ≤ # ar0, n + m0 ≤ # ar, n2 + m1 ≤ # ar2, n1 + m1 ≤ # ar0, ∀ n. n < m1 → ar2[n2 + n] = ar0[n1 + n], n0 + m0 ≤ n1 ∨ n1 + m1 ≤ n0 ⊦ range=(ar2, n2, copy(ar, n, ar0, n0, m0), n1, m1) |
n1 + m1 ≤ # ar0, n2 + m1 ≤ # ar2, n + m0 ≤ # ar, n0 + m0 ≤ # ar0, ∀ n. n < m1 → ar2[n2 + n] = ar0[n1 + n], n0 + m0 ≤ n1 ∨ n1 + m1 ≤ n0 ⊦ range=(ar2, n2, copy(ar, n, ar0, n0, m0), n1, m1)