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Proof step 5 from proof add-class (previous step)

⊦ r = r0, r0 ≠ jvmref ∧ r0 -- _type ∈ st ∧ st[r0 -- _type] = typeval(mkclasstype(class0)) ↔ classof(r0, class0, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 4:
⊦ classof(r, class1, st) ↔ r ≠ jvmref ∧ r -- _type ∈ st ∧ st[r -- _type] = typeval(mkclasstype(class1))

Rule argument

[speclemmaarg: , classof(r, class1, st) ↔ r ≠ jvmref ∧ r -- _type ∈ st ∧ st[r -- _type] = typeval(mkclasstype(class1)) ,[st, class1, r] → [st, class0, r0] ,F ,storefunsx , ,classOf ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, class0, r0)]]