0 < j ⊦ false ∈ uint2bits(j).rest ↔ (∀ i. 2 ^ i ≠ j + 1)
Used simplifier rules: ⊦ i < j ∧ 0 ≤ i → 0 < j; (forward)% ⊦ i - j = i0 ↔ i = i0 + j;