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Proof step 4 from proof validref-put-field-refval-01 (previous step)

is_reftype(ty0), validref(str, r, ty, st), validref(str, val .refval, ty0, st), is_referencevalue(val) ⊦ validref(str, r, ty, st[r0 -- mkfs(class, ty0, fieldvar) ', val])

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 3:
val = refval(r1), is_reftype(ty0), validref(str, r, ty, st), validref(str, r1, ty0, st), is_referencevalue(val) ⊦ validref(str, r, ty, st[r0 -- mkfs(class, ty0, fieldvar) ', val])

Rule argument

[speclemmaarg: ,is_referencevalue(val) → (r = val .refval ↔ val = refval(r)) ,[val, r] → [val, r1] ,T ,javavalue , ,elim-13 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_referencevalue(val) → ( r = val .refval ↔ val = refval(r))])], [EXTRATERMS : (val, r1)]]