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(4,11), next(5,6), next(6,7), next(7,8), next(8,9), next(9,10), next(11,12), next(12,13), next(12,18), next(13,14), next(14,15), next(15,16), next(16,17), next(18,19), next(19,20), next(20,21), next(21,22), next(22,23), next(23,24), next(24,25), next(24,30), next(25,26), next(26,27), next(27,28), next(28,29), next(30,31), next(31,32), next(32,33), next(33,34), next(34,35), next(35,36), next(35,41), next(36,37), next(37,38), next(38,39), next(39,40), next(41,42), next(42,43), next(43,44), next(44,45), doAt(startflow,3), doAt(a25,4), doAt(a17,5), doAt(a15,6), doAt(a23,7), doAt(a23,14), doAt(a23,26), doAt(a23,37), doAt(a23,42), doAt(a9,8), doAt(a9,15), doAt(a9,27), doAt(a9,38), doAt(a9,43), doAt(endflow,9), doAt(endflow,16), doAt(endflow,28), doAt(endflow,39), doAt(endflow,44), doAt(a7,11), doAt(a19,12), doAt(a12,13), doAt(a11,18), doAt(a14,19), doAt(a24,20), doAt(a20,21), doAt(a8,22), doAt(a18,23), doAt(a2,24), doAt(a6,25), doAt(a10,30), doAt(a4,31), doAt(a16,32), doAt(a21,33), doAt(a1,34), doAt(a22,35), doAt(a13,36), doAt(a3,41), 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(a25,co50), ineffset(a25,co51), ineffset(a17,x24), ineffset(a15,x7), ineffset(a15,x14), ineffset(a15,x17), ineffset(a23,x8), ineffset(a23,x18), ineffset(a9,x6), ineffset(endflow,x19), ineffset(endflow,finished), ineffset(a7,x13), ineffset(a19,co38), ineffset(a19,co39), ineffset(a12,x1), ineffset(a12,x22), ineffset(a12,x25), ineffset(a11,x4), ineffset(a11,x13), ineffset(a14,x1), ineffset(a14,x9), ineffset(a14,x11), ineffset(a14,x25), ineffset(a24,x4), ineffset(a24,x13), ineffset(a24,x18), ineffset(a24,x20), ineffset(a20,x23), ineffset(a8,x15), ineffset(a18,x16), ineffset(a18,x18), ineffset(a2,co4), ineffset(a2,co5), ineffset(a6,x10), ineffset(a6,x18), ineffset(a10,x18), ineffset(a10,x21), ineffset(a4,x8), ineffset(a16,x17), ineffset(a16,x24), ineffset(a21,x3), ineffset(a21,x5), ineffset(a21,x23), ineffset(a1,x7), ineffset(a22,co44), ineffset(a22,co45), ineffset(a13,x1), ineffset(a13,x21), ineffset(a13,x24), ineffset(a3,x1), ineffset(a3,x3), ineffset(a3,x21), activity(startflow), activity(a25), activity(a17), activity(a15), activity(a23), activity(a9), activity(endflow), activity(a7), activity(a19), activity(a12), activity(a11), activity(a14), activity(a24), activity(a20), activity(a8), activity(a18), activity(a2), activity(a6), activity(a10), activity(a4), activity(a16), activity(a21), activity(a1), activity(a22), activity(a13), activity(a3), effectsObserved(startflow,1), effectsObserved(a25,2), inreadset(a25,x11), inreadset(a25,x12), inreadset(a25,x17), inreadset(a17,x14), inreadset(a17,x22), inreadset(a17,x25), inreadset(a15,x1), inreadset(a15,x14), inreadset(a15,x23), inreadset(a23,x9), inreadset(a9,x7), inreadset(a9,x16), inreadset(a9,x18), 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(endflow,co50), inreadset(endflow,co51), inreadset(endflow,co38), inreadset(endflow,co39), inreadset(endflow,co4), inreadset(endflow,co5), inreadset(endflow,co44), inreadset(endflow,co45), inreadset(endflow,finished), inreadset(a7,x4), inreadset(a7,x21), inreadset(a19,x24), inreadset(a12,x15), inreadset(a12,x22), inreadset(a11,x14), inreadset(a11,x22), inreadset(a11,x24), inreadset(a14,x16), inreadset(a24,x2), inreadset(a24,x4), inreadset(a20,x2), inreadset(a20,x4), inreadset(a20,x11), inreadset(a8,x6), inreadset(a8,x15), inreadset(a8,x18), inreadset(a18,x21), inreadset(a2,x2), inreadset(a2,x3), inreadset(a2,x9), inreadset(a6,x8), inreadset(a10,x21), inreadset(a4,x11), inreadset(a16,x4), inreadset(a16,x8), inreadset(a16,x22), inreadset(a21,x20), inreadset(a1,x6), inreadset(a1,x14), inreadset(a1,x15), inreadset(a22,x20), inreadset(a13,x5), inreadset(a13,x6), inreadset(a13,x23), inreadset(a3,x2), do(startflow,1), do(a25,2), nextvis(1,2), do(a17,5), do(a15,6), do(a23,7), impossible(a,14), impossible(a,26), impossible(a,37), impossible(a,42), do(a9,8), impossible(a,15), impossible(a,27), impossible(a,38), impossible(a,43), do(endflow,9), impossible(a,16), impossible(a,28), impossible(a,39), impossible(a,44), impossible(a,11), impossible(a,12), impossible(a,13), impossible(a,18), impossible(a,19), impossible(a,20), impossible(a,21), impossible(a,22), impossible(a,23), impossible(a,24), impossible(a,25), impossible(a,30), impossible(a,31), impossible(a,32), impossible(a,33), impossible(a,34), impossible(a,35), impossible(a,36), impossible(a,41), impossible(a,17), impossible(a,29), impossible(a,40), impossible(a,45), nextvis(5,6), nextvis(6,7), nextvis(7,8), nextvis(8,9), nextvis(2,5), nextvis(9,10)}