YES babax1bbabx1aabbx1bbbax1babbx1bbaax12.1babax1bbabx1babax1babx1babax1abx1babax1bx1aabbx1bbbax1aabbx1bbax1aabbx1bax1aabbx1ax1babbx1bbaax1babbx1baax1babbx1aax1babbx1ax1truebabax1bx1babax1babx1babbx1baax1babbx1aax1aabbx1bax1babbx1ax1aabbx1ax1true1a1-221b1221b1221a1221babax1bbabx1falsebabax1abx1falseaabbx1bbbax1falseaabbx1bbax1falsebabbx1bbaax1falseAProVEAProVE Commit ID: 48fb2092695e11cc9f56e44b17a92a5f88ffb256 marcel 20180622 unpublished dirty Statistics for single proof: 100.00 % (4 real / 0 unknown / 0 assumptions / 4 total proof steps)http://aprove.informatik.rwth-aachen.deJohnDoe