i < ~128, i < 0 ⊦ i2b(~ i) = i2b(~ b2i(i2b(i)))
Used simplifier rules: ⊦ i < (* j) ∧ j < 0 → i < 0; (forward)% ⊦ i < j ∧ ¬ i0 < j → ¬ i0 < i;