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

¬(~128 ≤ bits2int(lastn(8, int2bits(i))) ∧ bits2int(lastn(8, int2bits(i))) ≤ 127), 8 ≤ # int2bits(i) ⊦ b2i(i2b(bits2int(lastn(8, int2bits(i))))) = bits2int(lastn(8, int2bits(i))), ¬ i < ~128 ∧ ¬ 127 < i

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Rule argument

Additional information

Used simplifier rules: ⊦ ¬ i ≤ j ↔ j < i;