j < j0, i < max(j, j0) ⊦ max(j, j0) = max(max(i, j), j0)
Used simplifier rules: Max-left: ⊦ ¬ j < i → max(j, i) = j;%Max-right: ⊦ j < i → max(j, i) = i; Used formulas: j < j0