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Proof step 8 from proof ubyte-inj (previous step)

b2i(by) = 256 + b2i(by0), ~256 ≤ b2i(by0), b2i(by0) < 0 ⊦ by = by0

User applied rule insert lemma

And obtained the following new goals

Proof step 9:
⊦ ~128 ≤ b2i(by) ∧ b2i(by) ≤ 127
Proof step 10:
~128 ≤ b2i(by) ∧ b2i(by) ≤ 127, b2i(by) = 256 + b2i(by0), ~256 ≤ b2i(by0), b2i(by0) < 0 ⊦ by = by0

Rule argument

name: byte-range subst: [by] → [by]

Additional information

Used terms: by