i % j + j * i1 = 0, 0 ≤ i, 0 < j, 0 < i1 ⊦ i1 = 0
Used simplifier rules: mod-zero-01: ⊦ 0 < j ∧ 0 ≤ i → ¬ i % j < 0;%ge-def: ⊦ i ≥ j ↔ ¬ i < j; from specification int-abs