| # int2bits(i) % 8 ≠ 0, n→i(# int2bits(i)) % 8 = 1, 0 < i ⊦ i = 0, n < # int2bits(i) / 8 + 1 ↔ ¬ i < 2 ^ (n→i(n) * 8 - 1) |
n→i(# int2bits(i)) % 8 = 1, 0 < i ⊦ # int2bits(i) % 8 = 0, i = 0, n ≤ # int2bits(i) / 8 ↔ ¬ i < 2 ^ (n→i(n) * 8 - 1)
Used simplifier rules: ⊦ m + n = n + m;% ⊦ (m + n0) + n1 = m + n0 + n1;% ⊦ ¬ m < n ↔ n ≤ m;% ⊦ m < n + 1 ↔ ¬ n < m;