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(9,14), next(10,11), next(11,12), next(12,13), next(14,15), next(15,16), next(16,17), 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(26,27), next(26,36), 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(36,37), next(37,38), next(37,42), next(38,39), next(39,40), next(40,41), next(42,43), next(43,44), next(44,45), doAt(startflow,3), doAt(a19,5), doAt(a11,6), doAt(a24,7), doAt(a8,8), doAt(a5,9), doAt(a20,10), doAt(a12,11), doAt(a12,21), doAt(a12,29), doAt(a12,33), doAt(a12,39), doAt(a12,43), doAt(endflow,12), doAt(endflow,22), doAt(endflow,30), doAt(endflow,34), doAt(endflow,40), doAt(endflow,44), doAt(a13,14), doAt(a23,15), doAt(a18,16), doAt(a21,17), doAt(a16,18), doAt(a17,19), doAt(a25,20), doAt(a9,24), 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