hffxhfgfxfgfxffx2.1hffxhfgfxhffxfgfxfgfxffxtruehffxhfgfxhffxhfgfxfgfxffxhffxhfgfxfgfxffxfgfx0hfgfx'1fgfx''ffx''hffx'hffxhfgfxhfgfx'x'x'AProVEunknownStatistics for single proof: 100,00 % (5 real / 0 unknown / 0 assumptions / 5 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe