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Proof step 5 from proof validref-ac (previous step)

⊦ validref(str, r, ty, addclass(class, [], st)) ↔ validref(str, r, ty, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ addclass(class1, [], st) = st[jvmref -- mkfs(class1, void_type, `initstate' .field) ', initval(done)]
Proof step 4:
⊦ validref(str, r, ty, st[jvmref -- mkfs(class, void_type, `initstate' .field) ', initval(done)]) ↔ validref(str, r, ty, st)

Rule argument

[speclemmaarg: , addclass(class1, [], st) = st[jvmref -- mkfs(class1, void_type, `initstate' .field) ', initval(done)] ,[st, class1] → [st, class] ,F ,addfuns , ,addclass-base ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, class)]]