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Proof step 13 from proof isobj-addclass (previous step)

st[r -- _type] = typeval(mkclasstype(class)), okval(noval, sk .fs .type), r -- sk ∈ addclass(class0, fis, st), is_fskey(sk), r ∈ st, r -- _type ∈ st, sk ∈ sks ⊦ class = class0, r = jvmref, r -- sk ∈ st

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 12:
sk = fs ', st[r -- _type] = typeval(mkclasstype(class)), okval(noval, fs .type), r -- sk ∈ addclass(class0, fis, st), is_fskey(sk), r ∈ st, r -- _type ∈ st, sk ∈ sks ⊦ class = class0, r = jvmref, r -- sk ∈ st

Rule argument

[speclemmaarg: ,is_fskey(sk) → (fs = sk .fs ↔ sk = fs ') ,[sk, fs] → [sk, fs] ,T ,storekey , ,elim-03 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_fskey(sk) → (fs = sk .fs ↔ sk = fs ')])], [EXTRATERMS : (sk, fs)]]