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Proof step 19 from proof isobj-put-badfield (previous step)

st[r -- _type] .type = mkclasstype(class), r ∈ st, is_obj(r, class, st), is_typevalue(st[r -- _type]), r -- _type ∈ st ⊦ r = jvmref, fs ' = _type, is_obj(r, st[r -- fs ', val]), fs ' ∈ instfields(class)

Heuristic elimination applied rule insert elim lemma

And obtained the following new goals

Proof step 18:
st[r -- _type] = typeval(ty), ty = mkclasstype(class), r ∈ st, is_obj(r, class, st), is_typevalue(st[r -- _type]), r -- _type ∈ st ⊦ r = jvmref, fs ' = _type, is_obj(r, st[r -- fs ', val]), fs ' ∈ instfields(class)

Rule argument

[speclemmaarg: ,is_typevalue(val) → (ty = val .type ↔ val = typeval(ty)) ,[val, ty] → [st[r -- _type], ty] ,T ,javavalue , ,elim-10 ]

Additional information

[[CONCRETESIMPRULES : ([CSIMPELIM : ⊦ is_typevalue(val) → ( ty = val .type ↔ val = typeval(ty))])], [EXTRATERMS : (st[r -- _type], ty)]]