i < 0 ⊦ i = 0, 65536 * i + s2i(sho) < 32768 ↔ ¬ 0 < i
⊦ i < 0, i = 0, 65536 * i + s2i(sho) < 32768 ↔ ¬ 0 < i
Used formulas: i < 0