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Proof step 5 from proof get-del (previous step)

⊦ r = r0, getarray(r, st -- r0) = getarray(r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ getarray(r, st) = getarray(r, 0, st[r -- _length] .intval, st)
Proof step 4:
⊦ r = r0, getarray(r, 0, (st -- r0)[r -- _length] .intval, st -- r0) = getarray(r, st)

Rule argument

[crewrite-arg: getArray-all, F, [st, r] → [st -- r0, r]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st -- r0, r)]]