Section Arg0_1.
Definition monotone0 (gf: rel0 -> rel0) :=
forall r r' (IN: gf r) (LE: r <0= r'), gf r'.
Variable gf : rel0 -> rel0.
Arguments gf : clear implicits.

Theorem paco0_2_1_acc: forall
l r_0 r_1 (OBG: forall rr (INC: r_1 <0= rr) (CIH: l <_paco_0= rr), l <_paco_0= paco0_2_1 gf_0 gf_1 r_0 rr),
l <0= paco0_2_1 gf_0 gf_1 r_0 r_1.