16 < # int2bits(s2i(sho)), s2i(sho) ≤ 0 ⊦ # int2bits(s2i(sho)) - 1 = 0
Used simplifier rules: ⊦ j ≤ i ∧ i ≤ 0 → j ≤ 0; (forward)% ⊦ ¬ i < j ↔ j ≤ i;