~2147483648 ≤ i, i ≤ 2147483647 ⊦ # fillsgn(32, int2bits(i)) = 32
Used simplifier rules: inbint: ⊦ i ∈bint ↔ ~2147483648 ≤ i ∧ i ≤ 2147483647;% ⊦ j ≤ j0 ∧ j0 ≤ j1 → j ≤ j1; (forward)