U11ttU12isNatKindU12ttU13isNatKindU13ttU14isNatKindU14ttU15isNatU15ttU16isNatU16ttttU21ttU22isNatKindU22ttU23isNatU23ttttU31ttU32isNatKindU32ttttU41ttttU51ttU52isNatKindU61ttU62isNatKindU62ttU63isNatU63ttU64isNatKindisNatttisNatU11isNatKindisNatU21isNatKindisNatKindttisNatKindU31isNatKindisNatKindU41isNatKindplusN0U51isNatplusNsMU61isNatU52ttNU64ttsplusNM2.1isNatKindisNatKindU31isNatKindU31isNatKindU31AProVEunknownStatistics for single proof: 100,00 % (1 real / 0 unknown / 0 assumptions / 1 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe