| i0 + j0 = i3 * j + j2 ∧ 0 ≤ j2 ∧ j2 < j, j0 + i0 = i2 * j + j1, 0 ≤ i1 * j + i0 + j0, 0 ≤ i0 + j0, 0 ≤ j1, j1 < j, 0 ≤ j0 + i0, 0 ≤ i0, 0 ≤ j0, j0 < j, 0 ≤ i1, 0 < j ⊦ j1 = j2 |
i0 + j0 = i3 * j + j2, j0 + i0 = i2 * j + j1, 0 ≤ j2, j2 < j, 0 ≤ i1 * j + i0 + j0, 0 ≤ i0 + j0, 0 ≤ j1, j1 < j, 0 ≤ j0 + i0, 0 ≤ i0, 0 ≤ j0, j0 < j, 0 ≤ i1, 0 < j ⊦ j1 = j2