Section Arg8.
Variable gf : rel8 T0 T1 T2 T3 T4 T5 T6 T7 -> rel8 T0 T1 T2 T3 T4 T5 T6 T7.
Arguments gf : clear implicits.

Theorem paco8_acc: forall
l r (OBG: forall rr (INC: r <8= rr) (CIH: l <8= rr), l <8= paco8 gf rr),
l <8= paco8 gf r.