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Proof step 11 from proof validref-not-junkrefs (previous step)

validref(str, r, ty, st), junkrefs(str, r ' + refs, ty, st) ⊦

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ validref(str, r, ty, st) ↔ r = jvmref ∨ st[r -- _type] .type ≤ ty ∧ ¬ junkref(str, r, st)
Proof step 10:
r = jvmref ∨ st[r -- _type] .type ≤ ty ∧ ¬ junkref(str, r, st), junkrefs(str, r ' + refs, ty, st) ⊦

Rule argument

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

Additional information

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