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Proof step 21 from proof validstatfields-initundone (previous step)

sk .fs = mkfs(class0, ty, fieldvar), sk ∈ statfields(class), is_fskey(sk), statfields(class) = [] ∨ tdname∃(str, class) ⊦ initdone(class, st), (initdone(class0, st) → validfield(str, jvmref, sk, st)) ∧ tdname∃(str, class0) ∧ sk ∈ statfields(class0)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 20:
sk = fs ', fs = mkfs(class0, ty, fieldvar), sk ∈ statfields(class), is_fskey(sk), statfields(class) = [] ∨ tdname∃(str, class) ⊦ initdone(class, st), (initdone(class0, st) → validfield(str, jvmref, sk, st)) ∧ tdname∃(str, class0) ∧ sk ∈ statfields(class0)

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)]]