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Proof step 9 from proof isobj-field-in (previous step)

st[r -- _type] = typeval(ty), ty = mkclasstype(class0), r ∈ st, is_obj(r, class0, st), is_typevalue(st[r -- _type]), r -- _type ∈ st, sk ∈ instfields(class), class0 ≤ class ⊦ r = jvmref, r -- sk ∈ st

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 8:
st[r -- _type] = typeval(mkclasstype(class0)), class0 ≤ class, sk ∈ instfields(class), r -- _type ∈ st, is_obj(r, class0, st), r ∈ st ⊦ r = jvmref, r -- sk ∈ st

Rule argument

[emptyarg]

Additional information

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