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Proof step 4 from proof int2bytes-len-adjust (previous step)

⊦ # int2bits(i) % 8 = 0, # bits2bytes(int2bits(i)) = # int2bits(i) / 8 + 1

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ # bits % 8 ≠ 0 → # bits2bytes(bits) = # bits / 8 + 1

Rule argument

name: bits2bytes-len-02 rotate: F subst: [bits] → [int2bits(i)]

Additional information

Used simplifier rules: ⊦ m + n = n + m; Used terms: int2bits(i)