| i + i0 < j + j0, j0 < j1 ⊦ i0 = i1, i + i1 < j + j1, i0 < i1 |
i + i0 < j + j0, j0 < j1, i1 < i0 ⊦ i + i1 < j + j1
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