| i * j + j0 = i0 * j + j1, j0 < j, j1 < j, 0 ≤ j0, 0 ≤ j1, 0 < j ⊦ i < i0, i = i0 |
i * j + j0 = i0 * j + j1, j0 < j, j1 < j, 0 ≤ j0, 0 ≤ j1, 0 < j, i0 < i ⊦
Used simplifier rules: ls-01: ⊦ i < j → ¬ j < i; from specification int-basic1%lst-01: ⊦ ¬ i < j → (i ≠ j ↔ j < i); from specification int-basic1