j | abs(i0) ⊦ i0 = 0, j | i0
Used simplifier rules: div-neg: ⊦ i | ~ j ↔ i | j;%abs-06: ⊦ 0 < abs(i) ↔ i ≠ 0; from specification int-abs%neg-05: ⊦ ~ i < 0 ↔ 0 < i; from specification int-abs