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Proof step 15 from proof isobj-put-badfield (previous step)

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

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 3:
⊦ is_obj(r, st) ↔ r ≠ jvmref ∧ r -- _type ∈ st ∧ is_typevalue(st[r -- _type]) ∧ is_classtype(st[r -- _type] .type) ∧ is_obj(r, st[r -- _type] .type .class, st)
Proof step 14:
st[r -- _type] = typeval(mkclasstype(class)), r -- _type ∈ st, goodfieldsandtypes(r, instfields(class), st), r ∈ st ⊦ fs ' = _type, r = jvmref, fs ' ∈ instfields(class), r ≠ jvmref ∧ r -- _type ∈ st[r -- fs ', val] ∧ is_typevalue(st[r -- fs ', val][r -- _type]) ∧ is_classtype((st[r -- fs ', val][r -- _type]) .type) ∧ is_obj(r, (st[r -- fs ', val][r -- _type]) .type .class, st[r -- fs ', val])

Rule argument

[crewrite-arg: is-any-object, F, [st, r] → [st[r -- fs ', val], r]]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st[r -- fs ', val], r)]]