fact: Fixpoint dp_size p := match p with | dp_cnst n => 1 | dp_var v => 1 | dp_par i => 1 | dp_comp _ p q => 1 + dp_size p + dp_size q end.
imports: Arith ZArith Lia List Undecidability.Shared.Libs.DLW.Utils(utils_tac utils_list gcd prime php utils_nat) Undecidability.Shared.Libs.DLW.Vec(pos vec) Undecidability.H10.Dio(dio_logic dio_single) Undecidability.H10.ArithLibs(Zp lagrange)