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(8,43), next(9,10), next(10,11), next(11,12), next(12,13), next(13,14), next(14,15), next(15,16), next(16,17), next(17,18), next(18,19), next(18,22), next(19,20), next(20,21), next(22,23), next(22,33), next(23,24), next(24,25), next(24,29), next(25,26), next(26,27), next(27,28), next(29,30), next(30,31), next(31,32), next(33,34), next(34,35), next(34,39), next(35,36), next(36,37), next(37,38), next(39,40), next(40,41), next(41,42), next(43,44), next(44,45), next(45,46), next(45,80), next(46,47), next(47,48), next(48,49), next(49,50), next(50,51), next(51,52), next(52,53), next(53,54), next(54,55), next(55,56), next(55,59), next(56,57), next(57,58), next(59,60), next(59,70), next(60,61), next(61,62), next(61,66), next(62,63), next(63,64), next(64,65), next(66,67), next(67,68), next(68,69), next(70,71), next(71,72), next(71,76), next(72,73), next(73,74), next(74,75), next(76,77), next(77,78), next(78,79), next(80,81), next(81,82), next(82,83), next(83,84), next(84,85), next(85,86), next(86,87), next(87,88), next(88,89), next(89,90), next(89,93), next(90,91), next(91,92), next(93,94), next(93,104), next(94,95), next(95,96), next(95,100), next(96,97), next(97,98), next(98,99), next(100,101), next(101,102), next(102,103), next(104,105), next(105,106), next(105,110), next(106,107), next(107,108), next(108,109), next(110,111), next(111,112), next(112,113), doAt(startflow,5), doAt(a9,7), doAt(a10,8), doAt(a22,10), doAt(a20,11), doAt(a20,47), doAt(a20,81), doAt(a3,12), doAt(a3,48), doAt(a3,82), doAt(a14,13), doAt(a14,50), doAt(a14,84), doAt(a23,14), doAt(a23,51), doAt(a23,85), doAt(a5,15), doAt(a5,52), doAt(a5,86), doAt(a11,16), doAt(a11,53), doAt(a11,87), doAt(a8,17), doAt(a8,54), doAt(a8,88), doAt(a16,18), doAt(a16,55), doAt(a16,89), doAt(a17,19), doAt(a17,56), doAt(a17,90), doAt(endflow,20), doAt(endflow,27), doAt(endflow,31), doAt(endflow,37), doAt(endflow,41), doAt(endflow,57), doAt(endflow,64), doAt(endflow,68), doAt(endflow,74), doAt(endflow,78), doAt(endflow,91), doAt(endflow,98), doAt(endflow,102), doAt(endflow,108), doAt(endflow,112), doAt(a18,22), doAt(a18,59), doAt(a18,93), doAt(a1,23), doAt(a1,60), doAt(a1,94), doAt(a25,24), doAt(a25,34), doAt(a25,61), doAt(a25,71), doAt(a25,95), doAt(a25,105), doAt(a15,25), doAt(a15,35), doAt(a15,62), doAt(a15,72), doAt(a15,96), doAt(a15,106), doAt(a19,26), doAt(a19,30), doAt(a19,36), doAt(a19,40), doAt(a19,63), doAt(a19,67), doAt(a19,73), doAt(a19,77), doAt(a19,97), doAt(a19,101), doAt(a19,107), doAt(a19,111), doAt(a4,29), doAt(a4,39), doAt(a4,66), doAt(a4,76), doAt(a4,100), doAt(a4,110), doAt(a24,33), doAt(a24,70), doAt(a24,104), doAt(a6,43), doAt(a21,44), doAt(a12,45), doAt(a7,46), doAt(a2,80), subsAt(a9,6), subsAt(a22,9), ineffset(startflow,x10), 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,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,x14), ineffset(a10,co20), ineffset(a10,co21), ineffset(a22,x10), ineffset(a20,x1), ineffset(a20,x6), ineffset(a20,x7), ineffset(a3,x23), ineffset(a14,x13), ineffset(a14,x19), ineffset(a14,x20), ineffset(a14,x24), ineffset(a23,x4), ineffset(a23,x7), ineffset(a23,x25), ineffset(a5,x17), ineffset(a11,x5), ineffset(a11,x19), ineffset(a8,x4), ineffset(a8,x7), ineffset(a8,x25), ineffset(a16,co32), ineffset(a16,co33), ineffset(a17,x5), ineffset(a17,x14), ineffset(a17,x15), ineffset(endflow,x2), ineffset(endflow,finished), ineffset(a18,co36), ineffset(a18,co37), ineffset(a1,x10), ineffset(a1,x7), ineffset(a25,co50), ineffset(a25,co51), ineffset(a15,x16), ineffset(a15,x22), ineffset(a15,x25), ineffset(a19,x2), ineffset(a19,x8), ineffset(a19,x9), ineffset(a19,x14), ineffset(a4,x10), ineffset(a4,x18), ineffset(a4,x25), ineffset(a24,x2), ineffset(a6,x4), ineffset(a6,x8), ineffset(a6,x12), ineffset(a6,x21), ineffset(a21,x1), ineffset(a21,x4), ineffset(a21,x13), ineffset(a12,co24), ineffset(a12,co25), ineffset(a7,x12), ineffset(a2,x9), activity(startflow), activity(a9), activity(a10), activity(a22), activity(a20), activity(a3), activity(a14), activity(a23), activity(a5), activity(a11), activity(a8), activity(a16), activity(a17), activity(endflow), activity(a18), activity(a1), activity(a25), activity(a15), activity(a19), activity(a4), activity(a24), activity(a6), activity(a21), activity(a12), activity(a7), activity(a2), effectsObserved(startflow,1), effectsObserved(a9,2), effectsObserved(a10,3), effectsObserved(a22,4), inreadset(a9,x11), inreadset(a10,x9), inreadset(a10,x22), inreadset(a22,x18), inreadset(a20,x14), inreadset(a20,x22), inreadset(a3,x9), inreadset(a14,x10), inreadset(a14,x3), inreadset(a14,x15), inreadset(a23,x11), inreadset(a23,x16), inreadset(a23,x24), inreadset(a5,x8), inreadset(a11,x4), inreadset(a11,x15), inreadset(a8,x2), inreadset(a16,x6), inreadset(a17,x7), inreadset(a17,x12), inreadset(a17,x17), inreadset(endflow,x10), 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,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,co20), inreadset(endflow,co21), inreadset(endflow,co24), inreadset(endflow,co25), inreadset(endflow,co32), inreadset(endflow,co33), inreadset(endflow,co36), inreadset(endflow,co37), inreadset(endflow,co50), inreadset(endflow,co51), inreadset(endflow,finished), inreadset(a18,x6), inreadset(a18,x13), inreadset(a18,x17), inreadset(a1,x1), inreadset(a1,x5), inreadset(a25,x5), inreadset(a15,x4), inreadset(a15,x14), inreadset(a15,x21), inreadset(a19,x1), inreadset(a4,x4), inreadset(a4,x6), inreadset(a24,x8), inreadset(a24,x17), inreadset(a24,x19), inreadset(a6,x9), inreadset(a6,x14), inreadset(a6,x15), inreadset(a21,x4), inreadset(a12,x11), inreadset(a7,x5), inreadset(a7,x21), inreadset(a2,x3), inreadset(a2,x20), do(startflow,1), do(a9,2), do(a10,3), do(a22,4), nextvis(1,2), nextvis(2,3), nextvis(3,4), subs(a9,6), subs(a22,9), do(a9,7), do(a22,10), do(a20,11), impossible(a,47), impossible(a,81), do(a3,12), impossible(a,48), impossible(a,82), do(a14,13), impossible(a,50), impossible(a,84), do(a23,14), impossible(a,51), impossible(a,85), do(a5,15), impossible(a,52), impossible(a,86), do(a11,16), impossible(a,53), impossible(a,87), do(a8,17), impossible(a,54), impossible(a,88), do(a16,18), impossible(a,55), impossible(a,89), do(a17,19), impossible(a,56), impossible(a,90), do(endflow,20), do(endflow,27), do(endflow,31), do(endflow,37), do(endflow,41), impossible(a,57), impossible(a,64), impossible(a,68), impossible(a,74), impossible(a,78), impossible(a,91), impossible(a,98), impossible(a,102), impossible(a,108), impossible(a,112), do(a18,22), impossible(a,59), impossible(a,93), do(a1,23), impossible(a,60), impossible(a,94), do(a25,24), do(a25,34), impossible(a,61), impossible(a,71), impossible(a,95), impossible(a,105), do(a15,25), do(a15,35), impossible(a,62), impossible(a,72), impossible(a,96), impossible(a,106), do(a19,26), do(a19,30), do(a19,36), do(a19,40), impossible(a,63), impossible(a,67), impossible(a,73), impossible(a,77), impossible(a,97), impossible(a,101), impossible(a,107), impossible(a,111), do(a4,29), do(a4,39), impossible(a,66), impossible(a,76), impossible(a,100), impossible(a,110), do(a24,33), impossible(a,70), impossible(a,104), impossible(a,43), impossible(a,44), impossible(a,45), impossible(a,46), impossible(a,80), impossible(a,49), impossible(a,83), impossible(a,58), impossible(a,92), impossible(a,65), impossible(a,69), impossible(a,75), impossible(a,79), impossible(a,99), impossible(a,103), impossible(a,109), impossible(a,113), nextvis(6,7), nextvis(9,10), nextvis(10,11), nextvis(11,12), nextvis(12,13), nextvis(13,14), nextvis(14,15), nextvis(15,16), nextvis(16,17), nextvis(17,18), nextvis(18,19), nextvis(18,22), nextvis(19,20), nextvis(22,23), nextvis(22,33), nextvis(23,24), nextvis(24,25), nextvis(24,29), nextvis(25,26), nextvis(26,27), nextvis(29,30), nextvis(30,31), nextvis(33,34), nextvis(34,35), nextvis(34,39), nextvis(35,36), nextvis(36,37), nextvis(39,40), nextvis(40,41), nextvis(4,6), nextvis(7,9), nextvis(20,21), nextvis(27,28), nextvis(31,32), nextvis(37,38), nextvis(41,42)}