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(8,13), next(9,10), next(10,11), next(11,12), 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(21,40), next(22,23), next(22,26), next(23,24), next(24,25), next(26,27), next(27,28), next(28,29), next(28,32), next(29,30), next(30,31), next(32,33), next(33,34), next(33,37), next(34,35), next(35,36), next(37,38), next(38,39), next(40,41), doAt(startflow,5), doAt(a9,6), doAt(a12,7), doAt(a10,8), doAt(a23,9), doAt(a15,10), doAt(endflow,11), doAt(endflow,24), doAt(endflow,30), doAt(endflow,35), doAt(endflow,38), doAt(endflow,40), doAt(a11,13), doAt(a24,14), doAt(a22,15), doAt(a1,16), doAt(a25,17), doAt(a20,18), doAt(a14,19), doAt(a5,20), doAt(a7,21), doAt(a18,22), doAt(a2,23), doAt(a13,26), doAt(a8,27), doAt(a3,28), doAt(a6,29), doAt(a16,32), doAt(a17,33), doAt(a19,34), doAt(a21,37), 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,x9), ineffset(startflow,x10), ineffset(startflow,x11), ineffset(startflow,x12), ineffset(startflow,x13), ineffset(startflow,x14), ineffset(startflow,x15), ineffset(startflow,x16), ineffset(startflow,x17), ineffset(startflow,x18), ineffset(startflow,x19), ineffset(startflow,x20), ineffset(startflow,x21), ineffset(startflow,x22), ineffset(startflow,x23), ineffset(startflow,x24), ineffset(startflow,x25), ineffset(a9,x8), ineffset(a9,x12), ineffset(a9,x20), ineffset(a9,x24), ineffset(a12,x3), ineffset(a12,x6), ineffset(a10,co20), ineffset(a10,co21), ineffset(a23,x8), ineffset(a23,x10), ineffset(a23,x11), ineffset(a23,x21), ineffset(a15,x6), ineffset(a15,x21), ineffset(a15,x24), ineffset(endflow,x1), ineffset(endflow,x22), ineffset(endflow,finished), ineffset(a11,x12), ineffset(a24,x14), ineffset(a24,x17), ineffset(a22,x8), ineffset(a22,x19), ineffset(a1,x8), ineffset(a25,x7), ineffset(a25,x12), ineffset(a25,x24), ineffset(a20,x3), ineffset(a20,x12), ineffset(a14,x16), ineffset(a5,x1), ineffset(a5,x5), ineffset(a7,co14), ineffset(a7,co15), ineffset(a18,co36), ineffset(a18,co37), ineffset(a2,x16), ineffset(a13,x21), ineffset(a8,x3), ineffset(a8,x12), ineffset(a8,x19), ineffset(a8,x21), ineffset(a3,co6), ineffset(a3,co7), ineffset(a6,x1), ineffset(a6,x2), ineffset(a6,x9), ineffset(a6,x16), ineffset(a16,x1), ineffset(a16,x2), ineffset(a17,co34), ineffset(a17,co35), ineffset(a19,x9), ineffset(a21,x16), ineffset(a21,x17), ineffset(a21,x18), inreadset(a9,x16), inreadset(a12,x12), inreadset(a10,x25), inreadset(a23,x1), inreadset(a23,x4), inreadset(a23,x5), inreadset(a15,x10), inreadset(a15,x19), inreadset(endflow,x1), inreadset(endflow,x2), inreadset(endflow,x3), inreadset(endflow,x4), inreadset(endflow,x5), inreadset(endflow,x6), inreadset(endflow,x7), inreadset(endflow,x8), inreadset(endflow,x9), inreadset(endflow,x10), inreadset(endflow,x11), inreadset(endflow,x12), inreadset(endflow,x13), inreadset(endflow,x14), inreadset(endflow,x15), inreadset(endflow,x16), inreadset(endflow,x17), inreadset(endflow,x18), inreadset(endflow,x19), inreadset(endflow,x20), inreadset(endflow,x21), inreadset(endflow,x22), inreadset(endflow,x23), inreadset(endflow,x24), inreadset(endflow,x25), inreadset(a11,x16), inreadset(a24,x23), inreadset(a22,x9), inreadset(a22,x13), inreadset(a1,x17), inreadset(a1,x25), inreadset(a25,x13), inreadset(a20,x2), inreadset(a20,x7), inreadset(a14,x23), inreadset(a14,x24), inreadset(a5,x20), inreadset(a5,x21), inreadset(a7,x4), inreadset(a18,x6), inreadset(a2,x5), inreadset(a13,x15), inreadset(a8,x4), inreadset(a8,x11), inreadset(a3,x4), inreadset(a3,x17), inreadset(a6,x9), inreadset(a16,x6), inreadset(a17,x13), inreadset(a19,x4), inreadset(a19,x7), inreadset(a21,x3), inreadset(a21,x24), activity(startflow), activity(a9), 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impossible(a,34), impossible(a,37), impossible(a,41), impossible(a,25), impossible(a,31), impossible(a,36), impossible(a,39), nextvis(9,10), nextvis(10,11), nextvis(4,7), nextvis(7,9), nextvis(11,12)}