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Proof step 3 from proof putBar-at (previous step)

is_fskey(sk) ⊦ (putByteArray(bytes, r, i, st)[r -- sk]) = st[r -- sk]

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ putByteArray(bytes, r, i, st) = putArray(mkjavavalues(bytes), r, i, st)
Proof step 2:
⊦ is_fskey(sk) → (putArray(vals, r, i, st)[r -- sk]) = st[r -- sk]

Rule argument

[crewrite-arg: putByteArray, F, [st, i, r, bytes] → [st, i, r, bytes]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, i, r, bytes)]]