Used simplifier rules: inbint: ⊦ i ∈bint ↔ ~2147483648 ≤ i ∧ i ≤ 2147483647;%i + 1 = i0 ⊦ j < (* i0) → ¬ (* i) < j;% ⊦ ¬ i ≤ j ↔ j < i;