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Proof step 2 from proof junkref-levelsubset-01 (previous step)

level⊆(str, str0), junkref(str0, r, st) ⊦ junkref(str, r, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Rule argument

[crewrite-arg: junkref-levelsubset , F , [str, str0, r, st] → [str, str0, r, st] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (str, str0, r, st)]]