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Proof step 30 from proof bytes2bytes-identity (previous step)

2 + # bytes = # int2bytes(bytes2int(i2b(0) ' + by0 ' + bytes)), 0 ≤ b2i(by0) ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 31:
⊦ 0 ≤ b2i(by) → bytes2int(i2b(0) ' + by ' + bytes) = bytes2int(by ' + bytes)
Proof step 32:
0 ≤ b2i(by0), 2 + # bytes = # int2bytes(bytes2int(by0 ' + bytes)), 0 ≤ b2i(by0) ⊦

Rule argument

name: bytes2int-zero-04 rotate: F subst: [bytes, by] → [bytes, by0]

Additional information

Used terms: bytes, by0