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Proof step 45 from proof validrefs-delete (previous step)

validrefs(str, refs, ty, st -- r) ⊦ validrefs(str, refs, ty, st)

User applied rule structural induction

And obtained the following new goals

Proof step 1:
⊦ validrefs(str, [], ty, st)
Proof step 44:
∀ str, ty, st, r. validrefs(str, acc, ty, st -- r) → validrefs(str, acc, ty, st), validrefs(str, r0 + acc, ty, st -- r) ⊦ validrefs(str, r0 + acc, ty, st)

Rule argument

[VARWITHVARSEQSARG : refs, ()]

Additional information

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