YES active2ndconsXconsYZmarkYactivefromXmarkconsXfromsXactive2ndX2ndactiveXactiveconsX1X2consactiveX1X2activefromXfromactiveXactivesXsactiveX2ndmarkXmark2ndXconsmarkX1X2markconsX1X2frommarkXmarkfromXsmarkXmarksXproper2ndX2ndproperXproperconsX1X2consproperX1properX2properfromXfromproperXpropersXsproperX2ndokXok2ndXconsokX1okX2okconsX1X2fromokXokfromXsokXoksXtopmarkXtopproperXtopokXtopactiveX2.11active1212nd121cons21112mark111from111s111proper111ok1121top121active2ndconsXconsYZmarkYactivefromXmarkconsXfromsXactive2ndX2ndactiveXactiveconsX1X2consactiveX1X2activefromXfromactiveXactivesXsactiveX2ndmarkXmark2ndXconsmarkX1X2markconsX1X2frommarkXmarkfromXsmarkXmarksXproper2ndX2ndproperXproperconsX1X2consproperX1properX2properfromXfromproperXpropersXsproperXfromokXokfromXsokXoksXtopmarkXtopproperX1active1212nd1121cons22112mark111from121s111proper111ok121top121activefromXmarkconsXfromsXactiveconsX1X2consactiveX1X2activefromXfromactiveXactivesXsactiveX2ndmarkXmark2ndXconsmarkX1X2markconsX1X2frommarkXmarkfromXsmarkXmarksXproper2ndX2ndproperXproperconsX1X2consproperX1properX2properfromXfromproperXpropersXsproperXfromokXokfromXsokXoksXtopmarkXtopproperX1active121from121mark111cons21112s1112nd111proper111ok1221top111activefromXmarkconsXfromsXactiveconsX1X2consactiveX1X2activefromXfromactiveXactivesXsactiveX2ndmarkXmark2ndXconsmarkX1X2markconsX1X2frommarkXmarkfromXsmarkXmarksXproper2ndX2ndproperXproperconsX1X2consproperX1properX2properfromXfromproperXpropersXsproperXsokXoksXtopmarkXtopproperX1active121from1211mark1111cons21112s1112nd121proper111ok121top111activeconsX1X2consactiveX1X2activesXsactiveXconsmarkX1X2markconsX1X2frommarkXmarkfromXsmarkXmarksXproper2ndX2ndproperXproperconsX1X2consproperX1properX2properfromXfromproperXpropersXsproperXsokXoksX1active163s152mark101from122proper1702nd131ok141cons210AProVEAProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Statistics for single proof: 100.00 % (6 real / 0 unknown / 0 assumptions / 6 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe