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(12,13), next(13,14), next(14,15), next(15,16), next(16,17), next(17,18), next(18,19), next(19,20), next(20,21), next(21,22), next(22,23), next(23,24), next(23,27), next(24,25), next(25,26), next(27,28), next(27,31), next(28,29), next(29,30), next(31,32), next(32,33), next(32,36), 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(42,47), next(43,44), next(44,45), next(45,46), next(47,48), next(48,49), next(49,50), doAt(startflow,7), doAt(a20,10), doAt(a6,11), doAt(a14,14), doAt(a5,16), doAt(a10,17), doAt(a22,18), doAt(a21,19), doAt(a4,20), doAt(a13,21), doAt(a8,22), doAt(a25,23), doAt(a12,24), doAt(endflow,25), doAt(endflow,29), doAt(endflow,34), doAt(endflow,40), doAt(endflow,45), doAt(endflow,49), doAt(a7,27), doAt(a3,28), doAt(a11,31), doAt(a2,32), doAt(a24,33), doAt(a15,36), doAt(a18,37), doAt(a23,38), doAt(a9,39), doAt(a9,44), doAt(a9,48), doAt(a16,42), doAt(a19,43), doAt(a17,47), subsAt(a20,8), subsAt(a14,12), ineffset(startflow,x12), ineffset(startflow,x9), ineffset(startflow,x20), ineffset(startflow,x1), ineffset(startflow,x2), ineffset(startflow,x3), ineffset(startflow,x4), ineffset(startflow,x5), ineffset(startflow,x6), ineffset(startflow,x7), ineffset(startflow,x8), ineffset(startflow,x10), ineffset(startflow,x11), ineffset(startflow,x13), ineffset(startflow,x14), ineffset(startflow,x15), ineffset(startflow,x16), ineffset(startflow,x17), ineffset(startflow,x18), ineffset(startflow,x19), ineffset(startflow,x21), ineffset(startflow,x22), ineffset(startflow,x23), ineffset(startflow,x24), ineffset(startflow,x25), ineffset(a20,x20), ineffset(a20,x11), ineffset(a6,x12), ineffset(a14,x9), ineffset(a5,x20), ineffset(a10,x5), ineffset(a10,x16), ineffset(a10,x19), ineffset(a22,x9), ineffset(a21,x1), ineffset(a21,x23), ineffset(a4,x5), ineffset(a13,x3), ineffset(a13,x6), ineffset(a13,x19), ineffset(a13,x24), ineffset(a8,x13), ineffset(a25,co50), ineffset(a25,co51), ineffset(a12,x4), ineffset(a12,x24), ineffset(endflow,x10), ineffset(endflow,finished), ineffset(a7,co14), ineffset(a7,co15), ineffset(a3,x14), ineffset(a3,x23), ineffset(a3,x24), ineffset(a11,x15), ineffset(a2,co4), ineffset(a2,co5), ineffset(a24,x20), ineffset(a24,x5), ineffset(a15,x1), ineffset(a15,x3), ineffset(a18,co36), ineffset(a18,co37), ineffset(a23,x25), ineffset(a9,x14), ineffset(a16,co32), ineffset(a16,co33), ineffset(a19,x2), ineffset(a17,x9), ineffset(a17,x25), inreadset(a20,x12), inreadset(a20,x14), inreadset(a20,x23), inreadset(a6,x17), inreadset(a14,x9), inreadset(a5,x20), inreadset(a10,x2), inreadset(a10,x25), inreadset(a22,x24), inreadset(a21,x9), inreadset(a21,x7), inreadset(a21,x21), inreadset(a4,x9), inreadset(a13,x18), inreadset(a8,x23), inreadset(a25,x13), inreadset(a12,x9), inreadset(a12,x3), 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