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Proof step 70 from proof fix-bits2bytes-01 (previous step)

# bits = 8 * n0, n0 < # bits2bytes(bits) ⊦ n0 = # bits2bytes(bits), lastn(n0, bits2bytes(bits)) = bits2bytes(bits), bits = [], n0 = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 71:
⊦ # bits % 8 = 0 ∧ bits ≠ [] → # bits2bytes(bits) = # bits / 8

Rule argument

name: bits2bytes-len-01 rotate: F subst: [bits] → [bits]

Additional information

Used simplifier rules: ⊦ m < n → n ≠ 0; (forward)%n ≠ 0 ⊦ (m * n) % n = 0;% ⊦ m0 * m * n = (m0 * m) * n;% ⊦ m * n = n * m;%n ≠ 0 ⊦ (m * n) / n = m; Used terms: bits