YES plusx0xplus0yyplussxysplusxytimes0y0timess0yytimessxyplusytimesxydiv0y0divxyquotxyyquot0syz0quotsxsyzquotxyzquotx0szsdivxszdivdivxyzdivxtimesyzplustimesplustimes2.1plusxyplusyxtimesxytimesyxplusplusxyzplusxplusyztimestimesxyztimesxtimesyzplusxyplusyxtimesxytimesyxplusplusxyzplusxplusyztimestimesxyztimesxtimesyzplusplusxyzplusyztimestimesxyztimesyzplussxyplusxytimessxyplusytimesxytimessxytimesxydivxyquotxyyquotsxsyzquotxyzquotx0szdivxszdivdivxyzdivxtimesyzdivdivxyztimesyzplusplusx0extplusxextplusplus0yextplusyextplusplussxyextplussplusxyextplusplussxyextplusxytimestimes0yexttimes0exttimestimess0yexttimesyexttimestimessxyexttimesplusytimesxyexttimestimessxyextplusytimesxytimestimessxyexttimesxyplusplusx0extplusxextplusplus0yextplusyextplusplussxyextplussplusxyexttimestimes0yexttimes0exttimestimess0yexttimesyexttimestimessxyexttimesplusytimesxyextdivxyquotxyyquotsxsyzquotxyzquotx0szdivxszdivdivxyzdivxtimesyztrue1quot311s1121000div211div23122times20plus20quotsxsyzquotxyz1quot321000s10div221div213132times20plus20divdivxyzdivxtimesyz1quot3122003s11div2222quotx0szdivxszdivxyquotxyydivdivxyztimesyzfalsetimestimes0yexttimes0exttimessxytimesxytimestimess0yexttimesyexttimestimessxyexttimesplusytimesxyexttimestimessxyexttimesxytimestimesxyztimesyztimesxytimesyxtimestimesxyztimesxtimesyztrue2times21211112times21211112s1111000plus21211timestimess0yexttimesyexttimestimessxyexttimesplusytimesxyexttimessxytimesxytimestimessxyexttimesxyplusplussxyextplussplusxyextplussxysplusxyplusx0xplus0yyplusplusx0extplusxextplusplus0yextplusyexttimessxyplusytimesxytimestimess0yexttimesyexttimestimessxyexttimesplusytimesxyexttimes0y0timestimes0yexttimes0exttimess0yyplusplusxyzplusxplusyzplusxyplusyxtimesxytimesyxtimestimesxyztimesxtimesyz2times22221112times222221112000s1211plus221211timestimesxyztimesyztimestimes0yexttimes0exttimessxyplusytimesxytimestimess0yexttimesyexttimestimessxyexttimesplusytimesxyexttimes0y0timestimes0yexttimes0exttimess0yyplusplussxyextplussplusxyextplussxysplusxyplusx0xplus0yyplusplusx0extplusxextplusplus0yextplusyexttimesxytimesyxtimestimesxyztimesxtimesyzplusplusxyzplusxplusyzplusxyplusyxtimessxyplusytimesxyfalsetimestimessxyextplusytimesxyfalseplusplusx0extplusxextplussxyplusxyplusplus0yextplusyextplusplussxyextplussplusxyextplusplussxyextplusxyplusplusxyzplusyzplusxyplusyxplusplusxyzplusxplusyztrue1plus21112plus21112s111000plusplusx0extplusxextplusplus0yextplusyextplusx0xplus0yytimes0y0timess0yytimessxyplusytimesxydiv0y0divxyquotxyyquot0syz0quotsxsyzquotxyzquotx0szsdivxszdivdivxyzdivxtimesyzplusplusx0extplusxextplusplus0yextplusyexttimestimes0yexttimes0exttimestimess0yexttimesyexttimestimessxyexttimesplusytimesxyextplusplussxyextplussplusxyextplussxysplusxyplusx0xplus0yyplusplusx0extplusxextplusplus0yextplusyextplusplusxyzplusxplusyzplusxyplusyx1plus22122plus221112times21112s111plusplusxyzplusyzplusplussxyextplusxyplusplussxyextplussplusxyextplussxysplusxyplusxyplusyxtimesxytimesyxplusplusxyzplusxplusyztimestimesxyztimesxtimesyz1plus22122plus21112times21112s1211plussxyplusxyplusplussxyextplussplusxyextplussxysplusxyplusxyplusyxtimesxytimesyxplusplusxyzplusxplusyztimestimesxyztimesxtimesyz1plus21112plus211112s10plusplussxyextplussplusxyextplusplussxyextplussplusxyextplussxysplusxyplusplusxyzplusxplusyzplusxyplusyxAProVEAProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Statistics for single proof: 100.00 % (14 real / 0 unknown / 0 assumptions / 14 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe