U62ttslengthLzeroscons0U11ttttU21ttttU31ttttU41ttU42isNatIListU42ttttU51ttU52isNatListU52ttttU61ttU62isNatisNatttisNatU11isNatListisNatU21isNatisNatIListU31isNatListisNatIListttisNatIListU41isNatisNatListttisNatListU51isNatlengthnil0lengthconsNU61isNatList2.1AProVEAProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty Statistics for single proof: 100.00 % (1 real / 0 unknown / 0 assumptions / 1 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe