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Set Definitional UIP.
Inductive seq {A} (a:A) : A -> SProp :=
srefl : seq a a.
Arguments srefl {_ _}.
(* Axiom implied by propext (so consistent) *)
Axiom all_eq : forall (P Q:Prop), P -> Q -> seq P Q.
Definition transport (P Q:Prop) (x:P) (y:Q) : Q
:= match all_eq P Q x y with srefl => x end.
Definition top : Prop := forall P : Prop, P -> P.
Definition c : top :=
fun P p =>
transport
(top -> top)
P
(fun x : top => x (top -> top) (fun x => x) x)
p.
Fail Timeout 1 Eval lazy in c (top -> top) (fun x => x) c.
(* loops *)
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