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Proof step 13 from proof bib-on-bits (previous step)

8 < # int2bits(i), i ≤ 0, ~1 ≤ i ⊦ i = bits2int(lastn(8, int2bits(i)))

User applied rule cut formula

And obtained the following new goals

Proof step 14:
8 < # int2bits(i), i ≤ 0, ~1 ≤ i ⊦ i = 0, i = bits2int(lastn(8, int2bits(i)))

Rule argument

fma: i = 0

Additional information

Used simplifier rules: ⊦ int2bits(0) = false ';% ⊦ # boolvar ' = 0 +1; Used formulas: i = 0