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Proof step 4 from proof validrefval-addobj (previous step)

validrefval(str, val, ty, st), newref(r, st) ⊦ r = jvmref, is_referencevalue(val) ∧ validref(str, val .refval, ty, addobj(r, class, fis, st))

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ validrefval(str, val, ty, st) ↔ is_referencevalue(val) ∧ validref(str, val .refval, ty, st)
Proof step 3:
⊦ newref(r1, st) ∧ validref(str, r, ty1, st) → validref(str, r, ty1, addobj(r1, class, fis, st))

Rule argument

[crewrite-arg: validrefval-def , F , [st, ty, val, str] → [st, ty, val, str] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, ty, val, str)]]