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Proof step 9 from proof validval-putrkvs (previous step)

val = refval(r), is_referencevalue(val), validvals(str, rkvs, st), is_reftype(ty), validrefval(str, val, ty, st) ⊦ mkfs(class, ty, fieldvar) ' = _length, ty = void_type, validref(str, r, ty, st[rkvs])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 6:
⊦ validrefval(str, refval(r), ty, st) ↔ validref(str, r, ty, st)
Proof step 8:
validvals(str, rkvs, st), is_reftype(ty), validref(str, r, ty, st) ⊦ mkfs(class, ty, fieldvar) ' = _length, ty = void_type, validref(str, r, ty, st[rkvs])

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_referencevalue(refval(r))])]]