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Proof step 14 from proof unchanged-validref (conclusion)

⊦ validref(str, r, ty, st) ∧ unchanged(str, r, st, st1) → validref(str, r, ty, st1)

Heuristic simplifier applied rule simplifier

And obtained the following new goals

Proof step 13:
unchanged(str, r, st, st1), validref(str, r, ty, st) ⊦ validref(str, r, ty, st1)

Rule argument

[emptyarg]

Additional information

[[CONCRETESIMPRULES : ()]]