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Proof step 5 from proof okclass-02 (previous step)

classof(r, class1, st), r ∈ st ⊦ r = jvmref, okclass(refval(r), class1, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ okclass(val, class1, st) ↔ reftypep(val, st) ∧ (val .refval ≠ jvmref → val .refval -- _type ∈ st ∧ st[val .refval -- _type] = typeval(mkclasstype(class1)))
Proof step 4:
classof(r, class1, st), r ∈ st ⊦ r = jvmref, reftypep(refval(r), st) ∧ (refval(r) .refval ≠ jvmref → refval(r) .refval -- _type ∈ st ∧ st[refval(r) .refval -- _type] = typeval(mkclasstype(class1)))

Rule argument

[crewrite-arg: okclass , F , [st, class1, val] → [st, class1, refval(r)] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, class1, refval(r))]]