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(11,33), 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(20,25), next(21,22), next(22,23), next(23,24), next(25,26), next(26,27), next(27,28), next(28,29), next(29,30), next(30,31), next(31,32), next(33,34), next(33,38), next(34,35), next(35,36), next(36,37), next(38,39), next(39,40), next(40,41), doAt(startflow,3), doAt(a16,4), doAt(a24,5), doAt(a10,6), doAt(a3,7), doAt(a5,8), doAt(a13,9), doAt(a11,10), doAt(a9,11), doAt(a4,12), doAt(a12,13), doAt(a1,14), doAt(a1,22), doAt(a1,30), doAt(a1,35), doAt(a1,39), doAt(endflow,15), doAt(endflow,23), doAt(endflow,31), doAt(endflow,36), doAt(endflow,40), doAt(a7,17), doAt(a21,18), doAt(a14,19), doAt(a20,20), doAt(a6,21), doAt(a15,25), doAt(a19,26), doAt(a2,27), doAt(a25,28), doAt(a22,29), doAt(a18,33), 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