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

level⊆(str, str0), junkrefs(str0, refs, ty, st) ⊦ junkrefs(str, refs, ty, st)

User applied rule insert rewrite lemma

And obtained the following new goals

Proof step 1:
⊦ level⊆(str, str0) ∧ ¬ junkrefs(str, refs, ty, st) → ¬ junkrefs(str0, refs, ty, st)

Rule argument

[crewrite-arg: junkrefs-levelsubset , F , [str, str0, refs, ty, st] → [str, str0, refs, ty, st] ]

Additional information

[[CONCRETESIMPRULES : ()], [EXTRATERMS : (str, str0, refs, ty, st)]]