| 0 ≤ i - 1 ∧ 0 ≤ 256 + j0, j0 < 0, ~256 < j0, 0 < i ⊦ i2b(256 + j0) = i2b(j0), i = 0 |
~256 ≤ j0, 0 < i, ~256 < j0, j0 < 0 ⊦ i = 0, i2b(256 + j0) = i2b(j0)
Used simplifier rules: i2b-noteq: ⊦ i2b(i) ≠ i2b(j) → i ≠ j;% ⊦ i = i + j ↔ j = 0;% ⊦ i ≤ j ∧ j < j0 → i < j0; (forward)% ⊦ i + j = j + i;% ⊦ i + j + i0 = (i + j) + i0;% ⊦ (* j) ≤ i0 + (* j0) ↔ j - j0 ≤ i0;% ⊦ 1 ≤ i ↔ 0 < i;% ⊦ i ≤ j - i0 ↔ i + i0 ≤ j;