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Proof step 33 from proof bits2int-pos (previous step)

7 < # bits0, # bits0 % 8 ≤ 7, # bits0 % 8 < # bits0, 0 ≤ bits2int(fillsgn(8, int2bits(b2i(i2b(bits2int(true ' + firstn(# bits0 % 8, bits0)))))) + bytes2bits(bits2bytes(restn(# bits0 % 8, bits0)))) ⊦ bits0 = [], (# bits0 + 1) % 8 = 0, ¬ bits2int(true ' + firstn(# bits0 % 8, bits0)) < ~128 ∧ ¬ 127 < bits2int(true ' + firstn(# bits0 % 8, bits0))

User applied rule case distinction

And obtained the following new goals

Rule argument

pos: right 3

Additional information