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Proof step 45 from proof sis-on-bits (previous step)

16 ≤ # int2bits(i) ⊦ s2i(i2s(bits2int(lastn(16, int2bits(i))))) = bits2int(lastn(16, int2bits(i))), ¬ i < ~32768 ∧ ¬ 32767 < i, ¬ bits2int(lastn(16, int2bits(i))) < ~32768 ∧ ¬ 32767 < bits2int(lastn(16, int2bits(i)))

User applied rule case distinction

And obtained the following new goals

Rule argument

pos: right 3

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