| # int2bits(i) < n, # int2bits(j) < n ⊦ # int2bits(bxor(i, j)) < n |
# int2bits(i) < n, # int2bits(j) < n, n ≤ # int2bits(bxor(i, j)), # int2bits(i) < # int2bits(bxor(i, j)), # int2bits(j) < # int2bits(bxor(i, j)) ⊦
Used simplifier rules: ⊦ int2bits(j) ≠ [];% ⊦ # bits = 0 ↔ bits = [];% ⊦ m < n → n ≠ 0;% ⊦ m < n → n ≠ 0; (forward)% ⊦ m < n ∧ n ≤ n0 → m < n0; (forward)% ⊦ ¬ m < n ↔ n ≤ m;