eq00trueeqsXsYeqXYeqXYfalseinfXconsXinfsXtake0XniltakesXconsYLconsYtakeXLlengthnil0lengthconsXLslengthL2.1eqx0x1infx0take0x0takesx0consx1x2lengthnillengthconsx0x1eqsXsYeqXYinfXinfsXtakesXconsYLtakeXLlengthconsXLlengthLtrueinfXinfsXeq00trueeqsXsYeqXYeqXYfalseinfXconsXinfsXtake0XniltakesXconsYLconsYtakeXLlengthnil0lengthconsXLslengthLinfXinfsXinfsz0infssz0infssz0infsssz0infssz0infssz0infsssz0infsssz0z0sz0AProVEunknownStatistics for single proof: 100,00 % (8 real / 0 unknown / 0 assumptions / 8 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe