| i * j = i * j0 ⊦ i < 0, i = 0, j = j0 |
i * j = i * j0, 0 < i ⊦ j = j0
Used simplifier rules: forward-le-05: ⊦ i < j ∧ 0 ≤ i → 0 < j; (forward) from specification int-abs%ls-01: ⊦ i < j → ¬ j < i; from specification int-basic1%lst-01: ⊦ ¬ i < j → (i ≠ j ↔ j < i); from specification int-basic1