YES a__2ndcons1XconsYZmarkYa__2ndconsXX1a__2ndcons1markXmarkX1a__fromXconsmarkXfromsXmark2ndXa__2ndmarkXmarkfromXa__frommarkXmarkconsX1X2consmarkX1X2marksXsmarkXmarkcons1X1X2cons1markX1markX2a__2ndX2ndXa__fromXfromX2.1a__2ndcons1XconsYZmarkYa__2ndconsXX1a__2ndcons1markXmarkX1a__2ndconsXX1markXa__2ndconsXX1markX1a__fromXmarkXmark2ndXa__2ndmarkXmark2ndXmarkXmarkfromXa__frommarkXmarkfromXmarkXmarkconsX1X2markX1marksXmarkXmarkcons1X1X2markX1markcons1X1X2markX2true11a__2nd101cons1210102cons210102mark1101mark101a__from11012nd111from1101s101a__2nd111a__from1101a__2ndcons1XconsYZmarkYa__2ndconsXX1a__2ndcons1markXmarkX1a__2ndconsXX1markXa__2ndconsXX1markX1a__fromXmarkXmark2ndXmarkXmarkfromXa__frommarkXmarkfromXmarkXmarkconsX1X2markX1marksXmarkXmarkcons1X1X2markX1markcons1X1X2markX2a__2ndconsXX1a__2ndcons1markXmarkX1falsea__2ndcons1XconsYZmarkYfalsea__2ndconsXX1markXfalsea__2ndconsXX1markX1falsemark2ndXmarkXmarkfromXa__frommarkXa__fromXmarkXmarkfromXmarkXmarkconsX1X2markX1marksXmarkXmarkcons1X1X2markX1markcons1X1X2markX2true11mark12012nd1101from1331a__from1231mark1001cons20102s101cons120102a__2nd1101a__from1331mark2ndXmarkXmarkfromXa__frommarkXa__fromXmarkXmarkconsX1X2markX1marksXmarkXmarkcons1X1X2markX1markcons1X1X2markX211mark1012nd1001from1011a__from101mark101cons20102s101cons120102a__2nd1001a__from1011mark2ndXmarkXa__fromXmarkXmarkconsX1X2markX1marksXmarkXmarkcons1X1X2markX1markcons1X1X2markX2a__fromXmarkXfalsemarkconsX1X2markX1mark2ndXmarkXmarksXmarkXmarkcons1X1X2markX1markcons1X1X2markX2truemarkconsX1X2markX11true1mark2ndXmarkX1true1marksXmarkX1true1markcons1X1X2markX11true1markcons1X1X2markX21true1AProVEAProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Statistics for single proof: 100.00 % (9 real / 0 unknown / 0 assumptions / 9 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe