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Proof step 9 from proof is_obj-field-norefval (previous step)

st[r -- _type] = typeval(ty0), ty0 = mkclasstype(class), is_typevalue(st[r -- _type]), r -- _type ∈ st, is_reftype(ty), mkfs(class0, ty, fieldvar) ' ∈ instfields(class), r ∈ st, class+∃(str, class), is_obj(r, class, st) ⊦ r = jvmref, is_abstract(class), is_referencevalue(st[r -- mkfs(class0, ty, fieldvar) '])

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
st[r -- _type] = typeval(mkclasstype(class)), is_obj(r, class, 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)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ([CSIMPSEQ : ⊦ is_typevalue(typeval(ty))])]]