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Proof step 23 from proof validstatfields-addclass (previous step)

fis .keys = statfields(class0), mkfs(class0, ty, fieldvar) ' ∈ fis, tdname∃(str, class0), mkfs(class0, ty, fieldvar) ' ∈ statfields(class0), initdone(class0, addclass(class0, fis, st)), type∃(str, ty), okval(fis[mkfs(class0, ty, fieldvar) '], ty) ∧ (is_referencevalue(fis[mkfs(class0, ty, fieldvar) ']) → validrefval(str, fis[mkfs(class0, ty, fieldvar) '], ty, st)) ⊦ class0 = `java.lang.Object' .class, ty = void_type, (is_reftype(ty) → validrefval(str, fis[mkfs(class0, ty, fieldvar) '], ty, addclass(class0, fis, st))) ∧ okval(fis[mkfs(class0, ty, fieldvar) '], ty)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 22:
fis .keys = statfields(class0), is_reftype(ty), mkfs(class0, ty, fieldvar) ' ∈ fis, tdname∃(str, class0), mkfs(class0, ty, fieldvar) ' ∈ statfields(class0), initdone(class0, addclass(class0, fis, st)), type∃(str, ty), is_referencevalue(fis[mkfs(class0, ty, fieldvar) ']), validrefval(str, fis[mkfs(class0, ty, fieldvar) '], ty, st) ⊦ class0 = `java.lang.Object' .class, ty = void_type, validrefval(str, fis[mkfs(class0, ty, fieldvar) '], ty, addclass(class0, fis, st))

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_reftype(ty) → ( okval(val, ty) ↔ is_referencevalue(val))])]]