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Proof step 12 from proof junkref-addobj (previous step)

newref(r0, st), junkrefs(str, r ' + refs0, (addobj(r0, class, fis, st)[r -- _type]) .type, addobj(r0, class, fis, st)) ⊦ r0 = jvmref, junkref(str, r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 2:
⊦ junkref(str, r, st) ↔ (∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, st[r -- _type] .type, st))
Proof step 11:
newref(r0, st), junkrefs(str, r ' + refs0, (addobj(r0, class, fis, st)[r -- _type]) .type, addobj(r0, class, fis, st)) ⊦ r0 = jvmref, ∃ refs. refs ≠ [] ∧ refs .first = r ∧ junkrefs(str, refs, st[r -- _type] .type, st)

Rule argument

[crewrite-arg: junkref-def, F, [st, r, str] → [st, r, str]]

Additional information

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