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Proof step 15 from proof okbytearray-index-in (conclusion)

⊦ ¬ r -- i ' ∈ st ∧ 0 ≤ i ∧ i < st[r -- _length] .intval → ¬ okbytearray(r, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 14:
okbytearray(r, st), i < st[r -- _length] .intval, 0 ≤ i, 0 < st[r -- _length] .intval ⊦ r -- i ' ∈ st

Rule argument

[emptyarg]

Additional information

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