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Proof step 56 from proof rightshift-8-02 (previous step)

int2bytes(i) = by ', i % 256 = 0, i < 0, i < ~128, ~256 ≤ i, ~256 < i ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 57:
⊦ ~256 < i ∧ i < ~128 → int2bytes(i) = i2b(~1) ' + i2b(i) '

Rule argument

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

Additional information

Used simplifier rules: j0 ≠ 0, j ≤ j0 ⊦ i < (* j) → i < (* j0);%i0 ≠ 0, i0 ≤ i ⊦ (* i) < j → (* i0) < j;% ⊦ by ' = by0 ' + bytes ↔ by = by0 ∧ bytes = [];% ⊦ by ' ≠ [];% ⊦ (bytes + bytes0) + bytes1 = bytes + bytes0 + bytes1; Used terms: i