DLV [build BEN/Oct 11 2007   gcc 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)]

true is bravely true, evidenced by {next(1,2), next(2,3), next(3,4), next(4,5), next(5,6), next(6,7), next(7,8), next(8,9), next(9,10), next(10,11), next(11,12), next(12,13), next(12,17), next(13,14), next(14,15), next(15,16), next(17,18), next(18,19), next(19,20), next(19,24), next(20,21), next(21,22), next(22,23), next(24,25), next(25,26), next(25,30), next(26,27), next(27,28), next(28,29), next(30,31), next(31,32), next(32,33), next(33,34), next(34,35), next(35,36), next(35,46), next(36,37), next(36,41), next(37,38), next(38,39), next(39,40), next(41,42), next(42,43), next(43,44), next(44,45), next(46,47), next(47,48), next(48,49), doAt(startflow,5), doAt(a9,7), doAt(a3,10), doAt(a10,11), doAt(a24,12), doAt(a14,13), doAt(a23,14), doAt(a23,21), doAt(a23,27), doAt(a23,38), doAt(a23,43), doAt(a23,47), doAt(endflow,15), doAt(endflow,22), doAt(endflow,28), doAt(endflow,39), doAt(endflow,44), doAt(endflow,48), doAt(a5,17), doAt(a18,18), doAt(a17,19), doAt(a25,20), doAt(a8,24), 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