YES unionXemptyXunionemptyXX0zzU11ttXYU12ttXYU12ttXY0multXYU21ttXYU22ttXYU22ttXYplus0multXYYU31ttXYU32ttXYU32ttXY0plusXYU41ttXYU42ttXYU42ttXY1plusXYU51ttXYU52ttXYU52ttXY0plusplusXY1zU61ttABU62ttABU62ttABmultprodAprodBU71ttABU72ttABU72ttABplussumAsumBmultzXzmult0XYU11ttXYmult1XYU21ttXYpluszXXplus0X0YU31ttXYplus0X1YU41ttXYplus1X1YU51ttXYprodempty1zprodsinglXXprodunionABU61ttABsumempty0zsumsinglXXsumunionABU71ttABmultplusunionmultplusunion2.13mult21211212plus21211union21211212empty020111z00U1131312212232132122123tt00U1231312212232132122123U21313312212232132122123U22312312212232132122123U3131312212132123123U3231312212132123123U41311312212132123123U4231131221213212312311111U51321312212132123123U52311312212132123123U6131312212232132122123U6231312212232132122123prod111U7132322212132122123U7232322212132122123sum121singl131311unionXemptyXunionemptyXXU22ttXYplus0multXYYU51ttXYU52ttXYprodempty1zsumempty0z3mult21211plus21211union2122212120111z00U1131312212132122123tt00U1231312212132122123U2131312212132122123U2231312212132122123U3131312212132122123U3231312212132122123U4131312212132122123U42313122121321221231111U5231322212232132122123U6132332211232132122123U6232322211232132122123prod121U71321312212132122123U72321312212132122123sum1111U5131312212132122123singl131311produnionABU61ttABsumsinglXX3mult21211112plus21211union2121111201221z00U11322322212232132122123tt00U12322322212232132122123U2131312212132122123U2231312212132122123U31332322212132122123U32322322212132122123U41312322212132122123U42323222121321221231121U52322322212132122123U61311312211232132122123U6231312211232132122123prod111U7132322212132122123U7232322212132122123sum121U5131312212132122123singl13313110zzU31ttXYU32ttXYU41ttXYU42ttXYU61ttABU62ttABplus0X0YU31ttXYplus0X1YU41ttXYprodsinglXX3mult222221112plus21211union21211312U11322322211232132122123tt00U123223222112321321221230111U21321312212232132122123U2231312212132122123U32312322212232132122123U423123222132321321221231121U52332312212132122123z00U62322332212232132122123prod111U7133332212232132122123U7233332212132122123sum131U5131312212132122123U21ttXYU22ttXYU32ttXY0plusXYU42ttXY1plusXYU52ttXY0plusplusXY1zmultzXz3mult212221212plus21211union21211212U11322322212232132122123tt00U1232232221223213212212301111U62312322213232132122123prod111U7131312212132122123U7231312212132122123sum11111321311U2132312212232132122123z01U5131312212132122123mult0XYU11ttXYmult1XYU21ttXYpluszXXplus1X1YU51ttXY3mult21211plus21211union233231212U11331322112131122123tt02U12323122122301111U623131211123213prod111U71322322313133122123U7233331221223212sum131U11ttXYU12ttXYU12ttXY0multXYU62ttABmultprodAprodBU71ttABU72ttABU72ttABplussumAsumBsumunionABU71ttABAProVEAProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Statistics for single proof: 100.00 % (7 real / 0 unknown / 0 assumptions / 7 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe