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Proof step 22 from proof unchNorec-isobj (previous step)

st[r -- _type] = typeval(mkclasstype(class)), st0[r -- _type] = typeval(mkclasstype(class)), r ∈ st, is_obj(r, class, st), r -- _type ∈ st, unchangedNorec(r, st, st0), r -- _type ∈ st0, r ∈ st0, ∀ fs. fs ' ∈ instfields(class) → st[r -- fs '] = st0[r -- fs '] ⊦ r = jvmref, goodfieldsandtypes(r, instfields(class), st0)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 5:
⊦ is_obj(r, class, st) ↔ r ≠ jvmref ∧ (r -- _type) × typeval(mkclasstype(class)) ∈ st ∧ goodfieldsandtypes(r, instfields(class), st)
Proof step 21:
st[r -- _type] = typeval(mkclasstype(class)), st0[r -- _type] = typeval(mkclasstype(class)), r ∈ st, r ≠ jvmref ∧ (r -- _type) × typeval(mkclasstype(class)) ∈ st ∧ goodfieldsandtypes(r, instfields(class), st), r -- _type ∈ st, unchangedNorec(r, st, st0), r -- _type ∈ st0, r ∈ st0, ∀ fs. fs ' ∈ instfields(class) → st[r -- fs '] = st0[r -- fs '] ⊦ r = jvmref, goodfieldsandtypes(r, instfields(class), st0)

Rule argument

[x0lemmaarg: spec-name: addfuns instance-name: lemma-name: is_obj-def antecedent: succedent: is_obj(r, class, st) ↔ r ≠ jvmref ∧ (r -- _type) × typeval(mkclasstype(class)) ∈ st ∧ goodfieldsandtypes(r, instfields(class), st) substlist: [st, class, r] → [st, class, r] add preconditions?: F is rewrite lemma?: T current spec?: F rotate lemma?: F replace all?: T paths: ((0, 0, 3)) dummy: () ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (st, class, r)]]