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(10,14), next(11,12), next(12,13), next(14,15), next(15,16), next(16,17), next(16,24), next(17,18), next(17,21), next(18,19), next(19,20), next(21,22), next(22,23), next(24,25), next(25,26), next(26,27), next(27,28), next(28,29), next(28,34), next(29,30), next(30,31), next(31,32), next(32,33), next(34,35), next(35,36), next(36,37), next(37,38), next(38,39), next(39,40), doAt(startflow,3), doAt(a3,5), doAt(a8,6), doAt(a10,7), doAt(a16,8), doAt(a23,9), doAt(a24,10), doAt(a21,11), doAt(endflow,12), doAt(endflow,19), doAt(endflow,22), doAt(endflow,32), doAt(endflow,39), doAt(a9,14), doAt(a13,15), doAt(a14,16), doAt(a11,17), doAt(a5,18), doAt(a12,21), doAt(a4,24), doAt(a25,25), doAt(a18,26), doAt(a15,27), doAt(a7,28), doAt(a19,29), doAt(a17,30), doAt(a17,37), doAt(a20,31), doAt(a20,38), doAt(a22,34), doAt(a1,35), doAt(a2,36), 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