+ab+ba+a+bz+b+az++xyz+x+yzfayafbybf+xyz+fxzfyz2.1+21a01b00f22+212a0b0f212AProVEAProVE Commit ID: 794c25de1cacf0d048858bcd21c9a779e1221865 marcel 20200619 unpublished dirty Statistics for single proof: 100.00 % (2 real / 0 unknown / 0 assumptions / 2 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe