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Proof step 15 from proof int2bytes-last-01 (previous step)

i < 0, i ≤ ~256, i < ~256 ⊦ int2bytes(i % 256).last = i2b(i), i % 256 = 0

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 16:
~128 ≤ i, i < 128 ⊦ int2bytes((* i)) = i2b(i) '
Proof step 17:
¬(~128 ≤ i % 256 ∧ i % 256 < 128), i < 0, i ≤ ~256, i < ~256 ⊦ int2bytes(i % 256).last = i2b(i), i % 256 = 0
Proof step 22:
~128 ≤ i % 256 ∧ i % 256 < 128, i < 0, i ≤ ~256, i < ~256 ⊦ i2b(i % 256) '.last = i2b(i), i % 256 = 0

Rule argument

name: int2bytes-byte rotate: F subst: [i] → [i % 256]

Additional information

Used terms: i % 256