0 ≤ i, i < abs(j), # int2bits(j) < # int2bits(i) ⊦ j = 0
Used simplifier rules: ⊦ 0 < abs(i) ↔ i ≠ 0;% ⊦ i ≤ j ∧ j < j0 → i < j0; (forward)% ⊦ ¬ i < j ↔ j ≤ i;% ⊦ ¬ j < 0 → abs(j) = j;