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Proof step 11 from proof getbar-put (previous step)

i + j ≤ sk .index ∨ sk .index < i ∨ is_fskey(sk) ⊦ is_fskey(sk), getbytearray(r, i, j, st[r -- sk, val]) = getbytearray(r, i, j, st)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 10:
is_indexkey(sk), i + j ≤ sk .index ∨ sk .index < i ⊦ getbytearray(r, i, j, st[r -- sk, val]) = getbytearray(r, i, j, st)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_indexkey(sk) → ¬ is_fskey(sk)], [CSIMPSEQ : ⊦ ¬ is_fskey(sk) ↔ is_indexkey(sk)])]]