0 ≤ i ⊦ b2i(i2b(i)) < i ↔ ¬ i < 128
Used simplifier rules: ⊦ i ≤ j ∧ 0 ≤ i → 0 ≤ j; (forward)% ⊦ ¬ i < j ↔ j ≤ i;