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(10,24), 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(20,21), next(21,22), next(22,23), next(24,25), next(25,26), next(26,27), next(27,28), next(27,32), next(28,29), next(29,30), next(30,31), next(32,33), next(33,34), next(34,35), next(35,36), next(36,37), next(37,38), next(38,39), next(39,40), next(40,41), doAt(startflow,5), doAt(a3,7), doAt(a21,8), doAt(a16,9), doAt(a2,10), doAt(a20,11), doAt(a25,12), doAt(a6,13), doAt(a14,14), doAt(a14,21), doAt(a14,29), doAt(a14,39), doAt(endflow,15), doAt(endflow,22), doAt(endflow,30), doAt(endflow,40), doAt(a15,17), doAt(a23,18), doAt(a5,19), doAt(a8,20), doAt(a11,24), doAt(a4,25), doAt(a12,26), doAt(a17,27), doAt(a9,28), doAt(a1,32), doAt(a7,33), doAt(a18,34), doAt(a22,35), doAt(a19,36), doAt(a13,37), doAt(a24,38), 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