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Proof step 2 from proof add-at (previous step)

r0 ∈ st, newref(r, st) ⊦ (addobj(r, class1, fis, st)[r0 -- sk]) = st[r0 -- sk], r = jvmref

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ r ≠ r0 → (addobj(r, class1, fis, st)[r0 -- sk]) = st[r0 -- sk]

Rule argument

[crewrite-arg: add-ref , F , [sk, r0, st, fis, class1, r] → [sk, r0, st, fis, class1, r] ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ r ∈ st → ¬ newref(r, st)])], [EXTRATERMS : (sk, r0, st, fis, class1, r)]]