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Proof step 5 from proof bytes2int-first-lez (previous step)

b2i(int2bytes(i).first) < 0, 0 ≤ i ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 6:
⊦ 0 ≤ bytes2int(by ' + bytes) → ¬ b2i(by) < 0
Proof step 7:
¬ 0 ≤ bytes2int(int2bytes(i).first ' + int2bytes(i).rest), b2i(int2bytes(i).first) < 0, 0 ≤ i ⊦

Rule argument

name: bytes2int-first-neq rotate: F subst: [bytes, by] → [int2bytes(i).rest, int2bytes(i).first]

Additional information

Used terms: int2bytes(i).rest, int2bytes(i).first