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Proof step 5 from proof is_obj-field-norefval (previous step)

st[r -- _type] = typeval(mkclasstype(class)), ∀ sk. sk ∈ instfields(class) → goodfieldandtype(r, sk, st), class+∃(str, class), r ∈ st, mkfs(class0, ty, fieldvar) ' ∈ instfields(class), is_reftype(ty), r -- _type ∈ st ⊦ r = jvmref, is_referencevalue(st[r -- mkfs(class0, ty, fieldvar) ']), is_abstract(class)

User applied rule all left

And closed the goal!

Rule argument

[EXRARG : pos: left 2, [extquanttermlist: (mkfs(class0, ty, fieldvar) ') abort:F , discard:T , computed:T ]]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ goodfieldandtype (r, mkfs(class1, ty, fieldvar) ', st) ↔ r -- mkfs(class1, ty, fieldvar) ' ∈ st ∧ okval (st[ r -- mkfs (class1, ty, fieldvar) '], ty)], [CSIMPSEQ : ⊦ is_reftype(ty) → ( okval(val, ty) ↔ is_referencevalue(val))])], [EXTRATERMS : (mkfs(class0, ty, fieldvar) ')]]