| gcd(i, j) = 1, 0 < j, j ≤ i0, 0 < i0, ≡mod(i * i0, 1, j), 0 ≤ i0, 0 < i ⊦ i = 0, j = 0, ≡mod(i * i0 |%| j, 1, j) ∧ 0 ≤ i0 |%| j ∧ i0 |%| j < j |
gcd(i, j) = 1, 0 < j, j ≤ i0, 0 < i0, ≡mod(i * i0, 1, j), 0 ≤ i0, 0 < i, i0 |%| j < j, i0 |%| j < i0, 0 ≤ i0 |%| j ⊦ i = 0, j = 0, ≡mod(i * i0 |%| j, 1, j)
Used simplifier rules: mod-pos: ⊦ 0 < j → ¬ i |%| j < 0;%mod-le-same: ⊦ 0 < j → ¬ j ≤ i |%| j;%forward-lsle: ⊦ i < j ∧ j ≤ j0 → i < j0; (forward) from specification int-abs%forward-le-01: ⊦ i ≤ j ∧ 0 ≤ i → 0 ≤ j; (forward) from specification int-abs%lels: ⊦ ¬ i < j ↔ j ≤ i; from specification int-abs%lels-01: ⊦ ¬ i ≤ j ↔ j < i; from specification int-abs