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Proof step 4 from proof okbar-len (conclusion)

⊦ okbytearray(r, st) → ¬ st[r -- _length] .intval < 0

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 3:
okbytearray(r, st), st[r -- _length] .intval < 0 ⊦

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPFORWARD : ⊦ j < i ∧ i ≤ 0 → j < 0])]]