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Proof step 22 from proof ushort-band-01 (previous step)

(i0 * 256 + j0) + 65535 = (i0 + 255) * 256 + j0 + 255, j + i * 256 = (i0 * 256 + j0) + 65535, i0 ≤ 0, j0 ≤ 0, j + i * 256 < 65535, abs(j0) < 256, 0 ≤ j, 0 ≤ i, j < 256 ⊦ 255 + j0 = j

User applied rule insert equation

And obtained the following new goals

Rule argument

pos: left 1 flags: discard

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