test-suite/vio/seff.v


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Inductive equal T (x : T) : T -> Type := Equal : equal T x x.

Module bla.

Lemma test n : equal nat n (n + n) -> equal nat (n + n + n) n.
Proof using.
intro H. rewrite <- H. rewrite <- H. exact (Equal nat n).
Qed.

End bla.