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(8,14), next(9,10), next(10,11), next(11,12), next(12,13), next(14,15), next(15,16), next(16,17), next(16,21), next(17,18), next(18,19), next(19,20), next(21,22), next(22,23), next(23,24), next(24,25), next(25,26), next(25,36), next(26,27), next(26,31), next(27,28), next(28,29), next(29,30), next(31,32), next(32,33), next(33,34), next(34,35), 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(45,46), doAt(startflow,4), doAt(a6,6), doAt(a1,7), doAt(a7,8), doAt(a8,9), doAt(a21,10), doAt(a24,11), doAt(a24,18), doAt(a24,28), doAt(a24,33), doAt(a24,38), doAt(a24,44), doAt(endflow,12), doAt(endflow,19), doAt(endflow,29), doAt(endflow,34), doAt(endflow,39), doAt(endflow,45), doAt(a5,14), doAt(a23,15), doAt(a4,16), doAt(a18,17), doAt(a16,21), doAt(a9,22), doAt(a19,23), doAt(a20,24), doAt(a17,25), 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