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Proof step 45 from proof validrefs-maxlen (conclusion)

⊦ validrefs(str, refs, ty, st) ∧ refs ≠ [] ∧ ¬ dups(refs) → # refs ≤ # st .refs + 1

User applied rule structural induction

And obtained the following new goals

Proof step 44:
∀ str, ty, st. validrefs(str, acc, ty, st) ∧ acc ≠ [] ∧ ¬ dups(acc) → # acc ≤ # st .refs + 1 ⊦ validrefs(str, r + acc, ty, st) ∧ r + acc ≠ [] ∧ ¬ dups(r + acc) → # (r + acc) ≤ # st .refs + 1

Rule argument

[VARWITHVARSEQSARG : refs, ()]

Additional information

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