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Proof step 12 from proof rightshift-8-02 (previous step)

int2bytes(i) ≠ [], # int2bytes(i) = 1, 0 ≤ i ⊦ i >> 8 = bytes2int(i2b(0) ' + int2bytes(i).butlast)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 13:
# int2bytes(i) = 1, 0 ≤ i ⊦ i >> 8 = bytes2int(i2b(0) ' + int2bytes(i).butlast)

Rule argument

Additional information

Used simplifier rules: int2bytes-empty: ⊦ int2bytes(i) ≠ [];