+0yy+sxys+xy-0y0-x0x-sxsy-xy2.11+22122002s111-22122+sxys+xy-sxsy-xy1+222122s1111-22122AProVEAProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty Statistics for single proof: 100.00 % (3 real / 0 unknown / 0 assumptions / 3 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe