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Proof step 2 from proof fix-butlast (previous step)

⊦ fix(n, bytes.butlast) = fix(n + 1, bytes).butlast, n = 0, # bytes = 1, bytes = []

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ # bytes < n → fix(n, bytes) = fillsgn(n, bytes)
Proof step 4:
¬ # bytes < n + 1 ⊦ fix(n, bytes.butlast) = fix(n + 1, bytes).butlast, n = 0, # bytes = 1, bytes = []
Proof step 13:
# bytes < n + 1 ⊦ fix(n, bytes.butlast) = fillsgn(n + 1, bytes).butlast, n = 0, # bytes = 1, bytes = []

Rule argument

name: fix-fillsgn rotate: F subst: [bytes, n] → [bytes, n + 1]

Additional information

Used terms: bytes, n + 1