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Proof step 62 from proof unchanged-junkrefs (conclusion)

⊦ unchanged(str, refs .first, st, st1) ∧ ¬ junkrefs(str, refs, ty, st) → ¬ junkrefs(str, refs, ty, st1)

User applied rule structural induction

And obtained the following new goals

Proof step 61:
∀ str, st, st1, ty. unchanged(str, refs0 .first, st, st1) ∧ ¬ junkrefs(str, refs0, ty, st) → ¬ junkrefs(str, refs0, ty, st1) ⊦ unchanged(str, (r + refs0) .first, st, st1) ∧ ¬ junkrefs(str, r + refs0, ty, st) → ¬ junkrefs(str, r + refs0, ty, st1)

Rule argument

[VARWITHVARSEQSARG : refs, ()]

Additional information

[[CONCRETESIMPRULES : ([CSIMPGEN : references generated by [], +;], [CSIMPSEQ : ⊦ ¬ junkrefs(str, [], ty, st)])]]