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Proof step 17 from proof isobj-addobj-01 (previous step)

st[r -- _type] = typeval(mkclasstype(class)), goodfieldsandtypes(r, instfields(class), st), newref(r0, st), r -- _type ∈ st, r ∈ st ⊦ r0 = jvmref, r = jvmref, is_obj(r, class, addobj(r0, class0, fis, st))

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ is_obj(r, class, st) ↔ r ≠ jvmref ∧ (r -- _type) × typeval(mkclasstype(class)) ∈ st ∧ goodfieldsandtypes(r, instfields(class), st)
Proof step 16:
st[r -- _type] = typeval(mkclasstype(class)), goodfieldsandtypes(r, instfields(class), st), newref(r0, st), r -- _type ∈ st, r ∈ st ⊦ r0 = jvmref, r = jvmref, r ≠ jvmref ∧ (r -- _type) × typeval(mkclasstype(class)) ∈ addobj(r0, class0, fis, st) ∧ goodfieldsandtypes(r, instfields(class), addobj(r0, class0, fis, st))

Rule argument

[crewrite-arg: is_obj-def , F , [st, class, r] → [addobj(r0, class0, fis, st), class, r] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (addobj(r0, class0, fis, st), class, r)]]