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Proof step 2 from proof bytes2int-first-gez (previous step)

0 ≤ b2i(int2bytes(i).first), i < 0 ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ ¬ 0 ≤ bytes2int(by + bytes) → ¬ 0 ≤ b2i(by)
Proof step 4:
¬ ¬ 0 ≤ bytes2int(int2bytes(i).first + int2bytes(i).rest), 0 ≤ b2i(int2bytes(i).first), i < 0 ⊦

Rule argument

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

Additional information

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