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Proof step 9 from proof unchanged-field-lookup (previous step)

is_obj(str, r, st), sk ∈ instfields(st[r -- _type] .type .class), unchanged(str, r, st, st1), is_fskey(sk) ⊦ r = jvmref, st[r -- sk] = st1[r -- sk]

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ is_fskey(sk) ↔ (∃ fs. sk = fs ')
Proof step 8:
is_obj(str, r, st), sk ∈ instfields(st[r -- _type] .type .class), unchanged(str, r, st, st1), ∃ fs. sk = fs ' ⊦ r = jvmref, st[r -- sk] = st1[r -- sk]

Rule argument

[x0lemmaarg: spec-name: storekey instance-name: lemma-name: ex-03 antecedent: succedent: is_fskey(sk) ↔ (∃ fs. sk = fs ') substlist: [sk] → [sk] 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 : (sk)]]