Section Main.
Variable gf: rel -> rel.
Hypothesis gf_mon: monotone3 gf.
Variant gpaco3 clo r rg x0 x1 x2 : Prop :=
| gpaco3_intro (IN: @rclo3 clo (paco3 (compose gf (rclo3 clo)) (rg \3/ r) \3/ r) x0 x1 x2)
.
Definition gupaco3 clo r := gpaco3 clo r r.
Hint Resolve gpaco3_def_mon : paco.

Lemma gupaco3_mon clo r r' x0 x1 x2
(IN: @gupaco3 clo r x0 x1 x2)
(LEr: r <3= r'):
@gupaco3 clo r' x0 x1 x2.