0 ≤ j, 0 < j, 0 ≤ b2i(by), 8 ≤ j, 2 ^ j ≤ b2i(by) ⊦ b2i(by) / 2 ^ j = 0
Used simplifier rules: ⊦ ¬ i < j ↔ j ≤ i;% ⊦ abs(2 ^ i) = 2 ^ i;% ⊦ 0 ≤ i → abs(i) = i;