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(6,16), next(7,8), next(8,9), next(8,12), next(9,10), next(10,11), next(12,13), next(13,14), next(14,15), 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(24,25), next(24,28), next(25,26), next(26,27), next(28,29), next(29,30), next(30,31), next(31,32), next(32,33), next(32,36), 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), doAt(startflow,5), doAt(a4,6), doAt(a20,8), doAt(a8,9), doAt(endflow,10), doAt(endflow,14), doAt(endflow,26), doAt(endflow,34), doAt(endflow,39), doAt(endflow,44), doAt(a21,12), doAt(a5,16), doAt(a6,17), doAt(a17,18), doAt(a9,20), doAt(a10,21), doAt(a7,22), doAt(a16,23), doAt(a2,24), doAt(a3,25), doAt(a22,28), doAt(a12,29), doAt(a18,30), doAt(a24,31), doAt(a19,32), doAt(a15,33), doAt(a23,36), doAt(a13,37), doAt(a11,38), doAt(a11,43), doAt(a14,41), doAt(a25,42), ineffset(startflow,x16), ineffset(startflow,x8), ineffset(startflow,x1), ineffset(startflow,x2), ineffset(startflow,x3), ineffset(startflow,x4), ineffset(startflow,x5), ineffset(startflow,x6), ineffset(startflow,x7), ineffset(startflow,x9), ineffset(startflow,x10), ineffset(startflow,x11), ineffset(startflow,x12), ineffset(startflow,x13), ineffset(startflow,x14), ineffset(startflow,x15), 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(a4,co8), ineffset(a4,co9), ineffset(a20,co40), ineffset(a20,co41), ineffset(a8,x16), ineffset(a8,x8), ineffset(endflow,x12), ineffset(endflow,finished), ineffset(a21,x23), ineffset(a5,x13), ineffset(a5,x15), ineffset(a6,x16), ineffset(a6,x4), ineffset(a6,x5), ineffset(a6,x12), ineffset(a17,x7), ineffset(a9,x18), ineffset(a10,x9), ineffset(a10,x12), ineffset(a7,x6), ineffset(a7,x22), ineffset(a7,x23), ineffset(a16,x2), ineffset(a16,x5), ineffset(a16,x15), ineffset(a2,co4), ineffset(a2,co5), ineffset(a3,x9), ineffset(a22,x3), ineffset(a22,x15), ineffset(a12,x5), ineffset(a12,x15), ineffset(a12,x23), ineffset(a18,x1), ineffset(a18,x11), ineffset(a24,x13), ineffset(a24,x18), ineffset(a24,x19), ineffset(a24,x20), ineffset(a19,co38), ineffset(a19,co39), ineffset(a15,x10), ineffset(a15,x21), ineffset(a15,x22), ineffset(a23,co46), ineffset(a23,co47), ineffset(a13,x23), ineffset(a11,x11), ineffset(a11,x15), ineffset(a11,x24), ineffset(a11,x25), ineffset(a14,x11), ineffset(a14,x14), ineffset(a25,x9), activity(startflow), activity(a4), activity(a20), activity(a8), activity(endflow), activity(a21), activity(a5), activity(a6), activity(a17), activity(a9), activity(a10), activity(a7), activity(a16), activity(a2), activity(a3), activity(a22), activity(a12), activity(a18), activity(a24), activity(a19), activity(a15), activity(a23), activity(a13), activity(a11), activity(a14), activity(a25), effectsObserved(startflow,1), effectsObserved(a4,2), effectsObserved(a20,3), effectsObserved(a8,4), inreadset(a4,x10), inreadset(a20,x16), inreadset(a8,x18), inreadset(endflow,x16), inreadset(endflow,x8), inreadset(endflow,x1), inreadset(endflow,x2), inreadset(endflow,x3), inreadset(endflow,x4), inreadset(endflow,x5), inreadset(endflow,x6), inreadset(endflow,x7), inreadset(endflow,x9), inreadset(endflow,x10), inreadset(endflow,x11), inreadset(endflow,x12), inreadset(endflow,x13), inreadset(endflow,x14), inreadset(endflow,x15), 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,co8), inreadset(endflow,co9), inreadset(endflow,co40), inreadset(endflow,co41), inreadset(endflow,co4), inreadset(endflow,co5), inreadset(endflow,co38), inreadset(endflow,co39), inreadset(endflow,co46), inreadset(endflow,co47), inreadset(endflow,finished), inreadset(a21,x17), inreadset(a21,x19), inreadset(a5,x11), inreadset(a5,x18), inreadset(a5,x22), inreadset(a6,x3), inreadset(a6,x5), inreadset(a17,x6), inreadset(a17,x19), inreadset(a9,x8), inreadset(a9,x3), inreadset(a10,x12), inreadset(a10,x17), inreadset(a7,x5), inreadset(a16,x5), inreadset(a16,x9), inreadset(a16,x20), inreadset(a2,x6), inreadset(a3,x3), inreadset(a3,x21), inreadset(a22,x12), inreadset(a12,x9), inreadset(a18,x23), inreadset(a24,x5), inreadset(a24,x13), inreadset(a19,x6), inreadset(a15,x7), inreadset(a15,x20), inreadset(a15,x25), inreadset(a23,x22), inreadset(a13,x1), inreadset(a11,x24), inreadset(a14,x9), inreadset(a25,x5), do(startflow,1), do(a4,2), do(a20,3), do(a8,4), nextvis(1,2), nextvis(2,3), nextvis(3,4), do(a8,9), do(endflow,10), impossible(a,14), impossible(a,26), impossible(a,34), impossible(a,39), impossible(a,44), impossible(a,12), impossible(a,16), impossible(a,17), impossible(a,18), impossible(a,20), impossible(a,21), impossible(a,22), impossible(a,23), impossible(a,24), impossible(a,25), impossible(a,28), impossible(a,29), impossible(a,30), impossible(a,31), impossible(a,32), impossible(a,33), impossible(a,36), impossible(a,37), impossible(a,38), impossible(a,43), impossible(a,41), impossible(a,42), comp(a8,4,x16,7), impossible(a,13), impossible(a,19), impossible(a,15), impossible(a,27), impossible(a,35), impossible(a,40), impossible(a,45), nextvis(9,10), nextvis(4,7), nextvis(7,9), nextvis(10,11)}