0 < 2 ^ i, 0 ≤ i, 0 ≤ i0 ⊦ (i0 % 2 ^ i * 2 + 1) / 2 = i0 % 2 ^ i
Used simplifier rules: ⊦ 1 ≤ i ↔ 0 < i; (s)%numlsf-02: ⊦ (* i) < j → i + 1 ≤ j; (forward) from specification int-abs