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Proof step 12 from proof ac-init-02 (previous step)

initerror(class, addclass(class, fis0, st)[jvmref -- mkfs(class, ty, fieldvar) ', val]), void_type ≠ ty ∨ `initstate' .field ≠ fieldvar ⊦ mkfs(class, void_type, `initstate' .field) ' ∈ fis0, initerror(class, addclass(class, fis0, st))

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ initerror(class1, st) ↔ (jvmref -- mkfs(class1, void_type, `initstate' .field) ') × initval(error) ∈ st
Proof step 11:
initerror(class, addclass(class, fis0, st)[jvmref -- mkfs(class, ty, fieldvar) ', val]), void_type ≠ ty ∨ `initstate' .field ≠ fieldvar ⊦ mkfs(class, void_type, `initstate' .field) ' ∈ fis0, (jvmref -- mkfs(class, void_type, `initstate' .field) ') × initval(error) ∈ addclass(class, fis0, st)

Rule argument

[speclemmaarg: , initerror(class1, st) ↔ (jvmref -- mkfs(class1, void_type, `initstate' .field) ') × initval(error) ∈ st ,[st, class1] → [addclass(class, fis0, st), class] ,F ,storefuns , ,initerror ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (addclass(class, fis0, st), class)]]