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Proof step 10 from proof short-2bytes (previous step)

band(b2i(by0), 255) + 256 * b2i(by) < ~32768, band(b2i(by0), 255) + 256 * b2i(by) < 0 ⊦ band(b2i(by0), 255) + 256 * ~128 < ~32768, s2i(i2s(band(b2i(by0), 255) + 256 * b2i(by))) = band(b2i(by0), 255) + 256 * b2i(by)

User applied rule weakening

And obtained the following new goals

Rule argument

poslist: left 2, right 2

Additional information