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Proof step 73 from proof junkrefs-union (previous step)

junkrefs(str, refs, ty, st0 ∪ st) ⊦ junkrefs(str, refs, ty, st)

User applied rule structural induction

And obtained the following new goals

Proof step 1:
⊦ ¬ junkrefs(str, [], ty, st)
Proof step 72:
∀ str, ty, st0, st. junkrefs(str, acc, ty, st0 ∪ st) → junkrefs(str, acc, ty, st), junkrefs(str, r + acc, ty, st0 ∪ st) ⊦ junkrefs(str, r + acc, ty, st)

Rule argument

[VARWITHVARSEQSARG : refs, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : references generated by [], +;])]]