Section Main.
Variable gf: rel -> rel.
Hypothesis gf_mon: monotone1 gf.
Variant gpaco1 clo r rg x0 : Prop :=
| gpaco1_intro (IN: @rclo1 clo (paco1 (compose gf (rclo1 clo)) (rg \1/ r) \1/ r) x0)
.
Definition gupaco1 clo r := gpaco1 clo r r.
Hint Resolve gpaco1_def_mon : paco.

Lemma gpaco1_cofix clo r rg
l (OBG: forall rr (INC: rg <1= rr) (CIH: l <1= rr), l <1= gpaco1 clo r rr):
l <1= gpaco1 clo r rg.