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Proof step 5 from proof getbar-len-01 (conclusion)

⊦ st[r -- _length] .intval < 0 → # getbytearray(r, st) = 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 4:
st[r -- _length] .intval < 0 ⊦ getbytearray(r, st) = []

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ j < i ∧ i ≤ 0 → j < 0], [CSIMPSEQ : ⊦ # bytes = 0 ↔ bytes = []])]]