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(4,19), next(5,6), next(6,7), next(6,13), next(7,8), next(8,9), 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(19,20), next(20,21), next(21,22), next(22,23), next(23,24), next(23,30), next(24,25), next(25,26), next(26,27), next(27,28), next(28,29), next(30,31), next(30,37), next(31,32), next(32,33), next(33,34), next(34,35), next(35,36), next(37,38), next(38,39), next(39,40), next(40,41), next(40,47), next(41,42), next(42,43), next(43,44), next(44,45), next(45,46), next(47,48), next(48,49), next(49,50), next(50,51), next(51,52), next(52,53), next(53,54), doAt(startflow,3), doAt(a18,4), doAt(a9,5), doAt(a19,6), doAt(a21,7), doAt(a12,8), doAt(a12,14), doAt(a12,25), doAt(a12,32), doAt(a12,42), doAt(a12,50), doAt(a11,9), doAt(a11,15), doAt(a11,26), doAt(a11,33), doAt(a11,43), doAt(a11,51), doAt(a14,10), doAt(a14,16), doAt(a14,27), doAt(a14,34), doAt(a14,44), doAt(a14,52), doAt(endflow,11), doAt(endflow,17), doAt(endflow,28), doAt(endflow,35), doAt(endflow,45), doAt(endflow,53), doAt(a5,13), doAt(a22,19), doAt(a3,20), doAt(a20,21), doAt(a17,22), doAt(a13,23), doAt(a10,24), doAt(a2,30), doAt(a1,31), doAt(a16,37), doAt(a8,38), doAt(a23,39), doAt(a6,40), doAt(a7,41), doAt(a15,47), doAt(a4,48), doAt(a24,49), 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(a18,co36), ineffset(a18,co37), ineffset(a9,x11), ineffset(a9,x12), ineffset(a9,x19), ineffset(a19,co38), ineffset(a19,co39), ineffset(a21,x11), ineffset(a21,x12), ineffset(a21,x14), ineffset(a21,x20), ineffset(a12,x12), ineffset(a12,x18), ineffset(a11,x11), ineffset(a11,x19), ineffset(a11,x23), ineffset(a14,x3), ineffset(a14,x8), ineffset(a14,x21), ineffset(endflow,x6), ineffset(endflow,finished), ineffset(a5,x3), ineffset(a5,x6), ineffset(a5,x11), ineffset(a5,x14), ineffset(a22,x16), ineffset(a3,x14), ineffset(a3,x23), ineffset(a20,x1), ineffset(a20,x9), ineffset(a17,x6), ineffset(a13,co26), ineffset(a13,co27), ineffset(a10,x24), ineffset(a2,co4), ineffset(a2,co5), ineffset(a1,x11), ineffset(a1,x21), ineffset(a16,x12), ineffset(a16,x16), ineffset(a16,x19), ineffset(a16,x22), ineffset(a8,x1), ineffset(a8,x10), ineffset(a8,x14), ineffset(a23,x24), ineffset(a6,co12), ineffset(a6,co13), ineffset(a7,x4), ineffset(a15,x10), ineffset(a15,x19), ineffset(a4,x13), ineffset(a24,x5), activity(startflow), activity(a18), activity(a9), activity(a19), activity(a21), activity(a12), activity(a11), activity(a14), activity(endflow), activity(a5), activity(a22), activity(a3), activity(a20), activity(a17), activity(a13), activity(a10), activity(a2), activity(a1), activity(a16), activity(a8), activity(a23), activity(a6), activity(a7), activity(a15), activity(a4), activity(a24), effectsObserved(startflow,1), effectsObserved(a18,2), inreadset(a18,x16), inreadset(a18,x24), inreadset(a9,x10), inreadset(a19,x23), inreadset(a21,x6), inreadset(a21,x11), inreadset(a21,x24), inreadset(a12,x7), inreadset(a12,x16), inreadset(a12,x20), inreadset(a11,x3), inreadset(a14,x1), inreadset(a14,x10), inreadset(a14,x21), 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,co36), inreadset(endflow,co37), inreadset(endflow,co38), inreadset(endflow,co39), inreadset(endflow,co26), inreadset(endflow,co27), inreadset(endflow,co4), inreadset(endflow,co5), inreadset(endflow,co12), inreadset(endflow,co13), inreadset(endflow,finished), inreadset(a5,x16), inreadset(a22,x16), inreadset(a22,x21), inreadset(a22,x25), inreadset(a3,x19), inreadset(a20,x16), inreadset(a20,x19), inreadset(a20,x23), inreadset(a17,x22), inreadset(a13,x22), inreadset(a10,x1), inreadset(a2,x19), inreadset(a1,x22), inreadset(a16,x23), inreadset(a8,x21), inreadset(a23,x1), inreadset(a23,x4), inreadset(a23,x6), inreadset(a6,x12), inreadset(a6,x21), inreadset(a6,x24), inreadset(a7,x5), inreadset(a7,x9), inreadset(a15,x11), inreadset(a15,x21), inreadset(a4,x22), inreadset(a24,x2), inreadset(a24,x3), do(startflow,1), do(a18,2), nextvis(1,2), do(a18,4), do(a9,5), do(a19,6), do(a21,7), do(a12,8), do(a12,14), impossible(a,25), impossible(a,32), impossible(a,42), impossible(a,50), do(a11,9), do(a11,15), impossible(a,26), impossible(a,33), impossible(a,43), impossible(a,51), do(a14,10), do(a14,16), impossible(a,27), impossible(a,34), impossible(a,44), impossible(a,52), do(endflow,11), do(endflow,17), impossible(a,28), impossible(a,35), impossible(a,45), impossible(a,53), do(a5,13), impossible(a,19), impossible(a,20), impossible(a,21), impossible(a,22), impossible(a,23), impossible(a,24), impossible(a,30), impossible(a,31), impossible(a,37), impossible(a,38), impossible(a,39), impossible(a,40), impossible(a,41), impossible(a,47), impossible(a,48), impossible(a,49), impossible(a,29), impossible(a,36), impossible(a,46), impossible(a,54), nextvis(4,5), nextvis(5,6), nextvis(6,7), nextvis(6,13), nextvis(7,8), nextvis(8,9), nextvis(9,10), nextvis(10,11), nextvis(13,14), nextvis(14,15), nextvis(15,16), nextvis(16,17), nextvis(2,4), nextvis(11,12), nextvis(17,18)}