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Proof step 37 from proof validrefs-superclass (previous step)

ty ≤ ty0, validrefs(str, refs, ty, st) ⊦ validrefs(str, refs, ty0, st)

User applied rule structural induction

And obtained the following new goals

Proof step 1:
⊦ validrefs(str, [], ty, st)
Proof step 36:
∀ ty, ty0, str, st. ty ≤ ty0 ∧ validrefs(str, acc, ty, st) → validrefs(str, acc, ty0, st), ty ≤ ty0, validrefs(str, r + acc, ty, st) ⊦ validrefs(str, r + acc, ty0, st)

Rule argument

[VARWITHVARSEQSARG : refs, ()]

Additional information

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