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(7,20), next(8,9), next(9,10), next(10,11), next(11,12), next(11,15), next(12,13), next(13,14), next(15,16), next(16,17), next(17,18), next(18,19), next(20,21), next(20,38), next(21,22), next(22,23), next(23,24), next(24,25), next(24,31), next(25,26), next(26,27), next(27,28), next(28,29), next(29,30), next(31,32), next(32,33), next(33,34), next(34,35), next(35,36), next(36,37), next(38,39), next(39,40), next(40,41), next(41,42), next(41,56), next(42,43), next(43,44), next(44,45), next(44,50), next(45,46), next(46,47), next(47,48), next(48,49), next(50,51), next(51,52), next(52,53), next(53,54), next(54,55), next(56,57), next(57,58), next(58,59), next(59,60), next(60,61), next(60,76), next(61,62), next(62,63), next(63,64), next(64,65), next(65,66), next(66,67), next(67,68), next(67,71), next(68,69), next(69,70), next(71,72), next(72,73), next(73,74), next(74,75), next(76,77), next(77,78), next(78,79), next(79,80), next(80,81), next(81,82), next(82,83), next(83,84), next(83,87), next(84,85), next(85,86), next(87,88), next(88,89), next(89,90), next(90,91), doAt(startflow,6), doAt(a9,7), doAt(a24,9), doAt(a2,10), doAt(a25,11), doAt(a25,24), doAt(a25,44), doAt(a25,67), doAt(a25,83), doAt(a16,12), doAt(a16,25), doAt(a16,45), doAt(a16,68), doAt(a16,84), doAt(endflow,13), doAt(endflow,18), doAt(endflow,29), doAt(endflow,36), doAt(endflow,48), doAt(endflow,54), doAt(endflow,69), doAt(endflow,74), doAt(endflow,85), doAt(endflow,90), doAt(a20,15), doAt(a20,31), doAt(a20,50), doAt(a20,71), doAt(a20,87), doAt(a18,16), doAt(a18,32), doAt(a18,51), doAt(a18,72), doAt(a18,88), doAt(a10,17), doAt(a10,33), doAt(a10,52), doAt(a10,73), doAt(a10,89), doAt(a14,20), doAt(a15,21), doAt(a3,22), doAt(a3,43), doAt(a3,66), doAt(a3,81), doAt(a21,38), doAt(a6,40), doAt(a1,41), doAt(a17,42), doAt(a19,56), doAt(a5,58), doAt(a13,59), doAt(a4,60), doAt(a11,61), doAt(a22,62), doAt(a22,77), doAt(a7,64), doAt(a7,79), doAt(a23,65), doAt(a23,80), doAt(a8,76), ineffset(startflow,x17), ineffset(startflow,x21), ineffset(startflow,x4), ineffset(startflow,x12), ineffset(startflow,x1), ineffset(startflow,x2), ineffset(startflow,x3), ineffset(startflow,x5), ineffset(startflow,x6), ineffset(startflow,x7), ineffset(startflow,x8), ineffset(startflow,x9), ineffset(startflow,x10), ineffset(startflow,x11), ineffset(startflow,x13), ineffset(startflow,x14), ineffset(startflow,x15), ineffset(startflow,x16), ineffset(startflow,x18), ineffset(startflow,x19), ineffset(startflow,x20), ineffset(startflow,x22), ineffset(startflow,x23), ineffset(startflow,x24), ineffset(startflow,x25), ineffset(a9,co18), ineffset(a9,co19), ineffset(a24,x21), ineffset(a24,x4), ineffset(a24,x12), ineffset(a2,x17), ineffset(a25,co50), ineffset(a25,co51), ineffset(a16,x8), ineffset(endflow,x21), ineffset(endflow,finished), ineffset(a20,x2), ineffset(a18,x21), ineffset(a18,x12), ineffset(a18,x18), ineffset(a10,x5), ineffset(a14,co28), ineffset(a14,co29), ineffset(a15,x15), ineffset(a3,x7), ineffset(a21,x10), ineffset(a21,x23), ineffset(a6,x24), ineffset(a1,co2), ineffset(a1,co3), ineffset(a17,x21), ineffset(a17,x10), ineffset(a17,x19), ineffset(a17,x20), ineffset(a19,x5), ineffset(a19,x10), ineffset(a19,x13), ineffset(a5,x9), ineffset(a13,x16), ineffset(a4,co8), ineffset(a4,co9), ineffset(a11,x21), ineffset(a11,x2), ineffset(a11,x6), ineffset(a11,x13), ineffset(a22,x3), ineffset(a22,x19), ineffset(a22,x23), ineffset(a7,x8), ineffset(a7,x11), ineffset(a7,x25), ineffset(a23,x6), ineffset(a23,x10), ineffset(a23,x20), ineffset(a8,x17), ineffset(a8,x5), ineffset(a8,x15), activity(startflow), activity(a9), activity(a24), activity(a2), activity(a25), activity(a16), activity(endflow), activity(a20), activity(a18), activity(a10), activity(a14), activity(a15), activity(a3), activity(a21), activity(a6), activity(a1), activity(a17), activity(a19), activity(a5), activity(a13), activity(a4), activity(a11), activity(a22), activity(a7), activity(a23), activity(a8), effectsObserved(startflow,1), effectsObserved(a9,2), effectsObserved(a24,3), effectsObserved(a2,4), effectsObserved(a25,5), inreadset(a9,x15), inreadset(a24,x17), inreadset(a2,x17), inreadset(a25,x21), inreadset(a25,x5), inreadset(a16,x1), inreadset(endflow,x17), inreadset(endflow,x21), inreadset(endflow,x4), inreadset(endflow,x12), inreadset(endflow,x1), inreadset(endflow,x2), inreadset(endflow,x3), inreadset(endflow,x5), inreadset(endflow,x6), inreadset(endflow,x7), inreadset(endflow,x8), inreadset(endflow,x9), inreadset(endflow,x10), inreadset(endflow,x11), inreadset(endflow,x13), inreadset(endflow,x14), inreadset(endflow,x15), inreadset(endflow,x16), inreadset(endflow,x18), inreadset(endflow,x19), inreadset(endflow,x20), inreadset(endflow,x22), inreadset(endflow,x23), inreadset(endflow,x24), inreadset(endflow,x25), inreadset(endflow,co18), inreadset(endflow,co19), inreadset(endflow,co28), inreadset(endflow,co29), inreadset(endflow,co2), inreadset(endflow,co3), inreadset(endflow,co8), inreadset(endflow,co9), inreadset(endflow,co50), inreadset(endflow,co51), inreadset(endflow,finished), inreadset(a20,x16), inreadset(a18,x9), inreadset(a10,x25), inreadset(a14,x15), inreadset(a15,x2), inreadset(a15,x3), inreadset(a3,x6), inreadset(a3,x15), inreadset(a21,x6), inreadset(a21,x15), inreadset(a21,x18), inreadset(a6,x4), inreadset(a6,x8), inreadset(a1,x11), inreadset(a17,x10), inreadset(a17,x20), inreadset(a19,x9), inreadset(a19,x22), inreadset(a19,x24), inreadset(a5,x17), inreadset(a13,x3), inreadset(a4,x2), inreadset(a4,x11), inreadset(a11,x18), inreadset(a22,x11), inreadset(a7,x17), inreadset(a7,x12), inreadset(a7,x19), inreadset(a23,x9), inreadset(a8,x1), do(startflow,1), do(a9,2), do(a24,3), do(a2,4), do(a25,5), nextvis(1,2), nextvis(2,3), nextvis(3,4), nextvis(4,5), do(a9,7), do(a2,10), impossible(a,24), impossible(a,44), impossible(a,67), impossible(a,83), do(a16,12), impossible(a,25), impossible(a,45), impossible(a,68), impossible(a,84), do(endflow,13), impossible(a,18), impossible(a,29), impossible(a,36), impossible(a,48), impossible(a,54), impossible(a,69), impossible(a,74), impossible(a,85), impossible(a,90), impossible(a,15), impossible(a,31), impossible(a,50), impossible(a,71), impossible(a,87), impossible(a,16), impossible(a,32), impossible(a,51), impossible(a,72), impossible(a,88), impossible(a,17), impossible(a,33), impossible(a,52), impossible(a,73), impossible(a,89), impossible(a,20), impossible(a,21), impossible(a,22), impossible(a,43), impossible(a,66), impossible(a,81), impossible(a,38), impossible(a,40), impossible(a,41), impossible(a,42), impossible(a,56), impossible(a,58), impossible(a,59), impossible(a,60), impossible(a,61), impossible(a,62), impossible(a,77), impossible(a,64), impossible(a,79), impossible(a,65), impossible(a,80), impossible(a,76), impossible(a,23), impossible(a,82), impossible(a,26), impossible(a,34), impossible(a,39), impossible(a,27), impossible(a,46), impossible(a,63), impossible(a,78), comp(a2,4,x17,8), impossible(a,28), impossible(a,35), impossible(a,47), impossible(a,53), impossible(a,57), impossible(a,19), impossible(a,75), impossible(a,91), impossible(a,55), impossible(a,37), impossible(a,30), impossible(a,49), impossible(a,70), impossible(a,86), nextvis(7,8), nextvis(12,13), nextvis(5,7), nextvis(8,10), nextvis(10,12), nextvis(13,14)}