| i1 * j + j1 = i0 * j + j0, j0 + j < 0, j < 0, j1 + j < 0, i0 ≤ 0, 0 ≤ j0, 0 ≤ j1, 0 ≤ i0 * j + j0 ⊦ i0 = i1 ∧ j0 = j1 |
i * j + j0 = i0 * j + j1, j < 0, 0 ≤ j0, j0 < abs(j), 0 ≤ j1, j1 < abs(j) ⊦ i = i0 ∧ j0 = j1
Used simplifier rules: ⊦ i < 0 → abs(i) = ~ i; (s)% ⊦ i < ~ j ↔ i + j < 0; (s) Used terms: i1, j, j1, i0, j0