NO U11ttU12splitAtNXSU12pairYSZSpairconsXZSandttXtailconsNXSafterNthNXSsndsplitAtNXSfstpairXYXheadconsNNnatsFromNconsNselNXSheadafterNthNXSsndpairXYYsplitAt0XSpairnilXSsplitAtsNconsXU11tttakeNXSfstsplitAtNXS2.1U11ttU11ttU12splitAtNXSU12splitAtU11ttU11ttU12splitAtU11ttAProVEAProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Statistics for single proof: 100.00 % (1 real / 0 unknown / 0 assumptions / 1 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe