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Proof step 17 from proof validval-put-any (previous step)

is_referencevalue(val), validref(str, r0, ty, st), is_reftype(ty), is_reftype(ty0), validrefval(str, val, ty0, st) ⊦ ty = void_type, mkfs(class, ty, fieldvar) ' = _length, mkfs(class0, ty0, fieldvar0) ' = _length, ty0 = void_type, validref(str, r0, ty, st[r1 -- mkfs(class0, ty0, fieldvar0) ', val]), validref(str, val .refval, ty0, st)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 16:
⊦ validrefval(str, refval(r), ty, st) ↔ validref(str, r, ty, st)

Rule argument

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

Additional information

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