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(9,10), next(10,11), next(11,12), next(12,13), next(13,14), next(14,15), next(15,16), next(16,17), next(16,28), 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(25,26), next(26,27), next(28,29), next(29,30), next(30,31), next(30,60), next(31,32), next(31,44), next(32,33), next(33,34), next(34,35), next(35,36), next(36,37), next(37,38), next(38,39), next(39,40), next(40,41), next(41,42), next(42,43), next(44,45), next(45,46), 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(56,57), next(57,58), next(58,59), next(60,61), next(61,62), next(62,63), next(63,64), next(64,65), next(65,66), next(66,67), next(67,68), next(68,69), next(69,70), next(70,71), next(71,72), next(72,73), next(73,74), next(74,75), next(75,76), next(76,77), doAt(startflow,9), doAt(a6,12), doAt(a3,14), doAt(a20,15), doAt(a17,16), doAt(a15,17), doAt(a16,20), doAt(a16,35), doAt(a16,52), doAt(a16,70), doAt(a21,22), doAt(a21,36), doAt(a21,53), doAt(a21,71), doAt(a4,23), doAt(a4,37), doAt(a4,54), doAt(a4,72), doAt(a24,24), doAt(a24,38), doAt(a24,55), doAt(a24,73), doAt(a23,25), doAt(a23,39), doAt(a23,56), doAt(a23,74), doAt(endflow,26), doAt(endflow,42), doAt(endflow,58), doAt(endflow,76), doAt(a2,29), doAt(a25,30), doAt(a10,31), doAt(a8,32), doAt(a1,46), doAt(a19,47), doAt(a18,50), doAt(a11,60), doAt(a12,61), doAt(a14,62), doAt(a7,63), doAt(a9,64), doAt(a13,66), doAt(a5,67), subsAt(a3,13), subsAt(a16,18), subsAt(a16,33), subsAt(a16,51), subsAt(a16,68), ineffset(startflow,x2), ineffset(startflow,x28), ineffset(startflow,x24), ineffset(startflow,x11), ineffset(startflow,x19), ineffset(startflow,x35), ineffset(startflow,x18), ineffset(startflow,x1), 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,x12), ineffset(startflow,x13), ineffset(startflow,x14), ineffset(startflow,x15), ineffset(startflow,x16), ineffset(startflow,x17), ineffset(startflow,x20), ineffset(startflow,x21), ineffset(startflow,x22), ineffset(startflow,x23), ineffset(startflow,x25), ineffset(startflow,x26), ineffset(startflow,x27), ineffset(startflow,x29), ineffset(startflow,x30), ineffset(startflow,x31), ineffset(startflow,x32), ineffset(startflow,x33), ineffset(startflow,x34), ineffset(a6,x32), ineffset(a3,x24), ineffset(a3,x14), ineffset(a3,x31), ineffset(a3,x32), ineffset(a20,x2), ineffset(a20,x9), ineffset(a17,co34), ineffset(a17,co35), ineffset(a15,x11), ineffset(a15,x19), ineffset(a15,x35), ineffset(a16,x18), ineffset(a16,x23), ineffset(a21,x2), ineffset(a21,x28), ineffset(a21,x24), ineffset(a21,x35), ineffset(a4,x33), ineffset(a24,x7), ineffset(a24,x10), ineffset(a24,x17), ineffset(a24,x29), ineffset(a23,x18), ineffset(endflow,x8), ineffset(endflow,x13), ineffset(endflow,x23), ineffset(endflow,x25), ineffset(endflow,finished), ineffset(a2,x28), ineffset(a2,x10), ineffset(a2,x14), ineffset(a2,x29), ineffset(a25,co50), ineffset(a25,co51), ineffset(a10,co20), ineffset(a10,co21), ineffset(a8,x4), ineffset(a8,x17), ineffset(a8,x34), ineffset(a1,x20), ineffset(a19,x6), ineffset(a19,x7), ineffset(a19,x20), ineffset(a19,x30), ineffset(a18,x11), ineffset(a18,x8), ineffset(a18,x15), ineffset(a11,x20), ineffset(a12,x19), ineffset(a14,x1), ineffset(a14,x20), ineffset(a14,x25), ineffset(a14,x31), ineffset(a7,x35), ineffset(a7,x13), ineffset(a7,x22), ineffset(a7,x30), ineffset(a9,x6), ineffset(a9,x10), ineffset(a13,x28), ineffset(a13,x25), ineffset(a5,x17), inreadset(a6,x2), inreadset(a3,x10), inreadset(a20,x5), inreadset(a20,x8), inreadset(a17,x6), inreadset(a17,x17), inreadset(a17,x22), inreadset(a15,x15), inreadset(a16,x2), inreadset(a21,x28), inreadset(a21,x14), inreadset(a21,x29), inreadset(a4,x22), inreadset(a24,x26), inreadset(a24,x34), inreadset(a23,x2), inreadset(a23,x35), inreadset(endflow,x2), inreadset(endflow,x28), inreadset(endflow,x24), inreadset(endflow,x11), inreadset(endflow,x19), inreadset(endflow,x35), inreadset(endflow,x18), inreadset(endflow,x1), 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,x12), inreadset(endflow,x13), inreadset(endflow,x14), inreadset(endflow,x15), inreadset(endflow,x16), inreadset(endflow,x17), inreadset(endflow,x20), inreadset(endflow,x21), inreadset(endflow,x22), inreadset(endflow,x23), inreadset(endflow,x25), inreadset(endflow,x26), inreadset(endflow,x27), inreadset(endflow,x29), inreadset(endflow,x30), inreadset(endflow,x31), inreadset(endflow,x32), inreadset(endflow,x33), inreadset(endflow,x34), inreadset(a2,x24), inreadset(a25,x27), inreadset(a10,x21), inreadset(a10,x30), inreadset(a8,x6), inreadset(a8,x25), inreadset(a1,x2), inreadset(a1,x11), inreadset(a19,x24), inreadset(a19,x29), inreadset(a18,x35), inreadset(a11,x4), inreadset(a11,x29), inreadset(a12,x17), inreadset(a14,x28), inreadset(a7,x21), inreadset(a9,x24), inreadset(a9,x35), inreadset(a13,x18), inreadset(a13,x17), inreadset(a5,x5), inreadset(a5,x31), inreadset(a5,x34), activity(startflow), activity(a6), activity(a3), activity(a20), activity(a17), activity(a15), activity(a16), activity(a21), activity(a4), activity(a24), activity(a23), activity(endflow), activity(a2), activity(a25), activity(a10), activity(a8), activity(a1), activity(a19), activity(a18), activity(a11), activity(a12), activity(a14), activity(a7), activity(a9), activity(a13), activity(a5), effectsObserved(startflow,1), effectsObserved(a6,2), effectsObserved(a3,3), effectsObserved(a20,4), effectsObserved(a17,5), effectsObserved(a15,6), effectsObserved(a16,7), effectsObserved(a21,8), do(startflow,1), do(a6,2), do(a3,3), do(a20,4), do(a17,5), do(a15,6), do(a16,7), do(a21,8), nextvis(1,2), nextvis(2,3), nextvis(3,4), nextvis(4,5), nextvis(5,6), nextvis(6,7), nextvis(7,8), subs(a3,13), subs(a16,18), impossible(a,33), impossible(a,51), impossible(a,68), do(a3,14), do(a20,15), do(a15,17), do(a16,20), impossible(a,35), impossible(a,52), impossible(a,70), do(a21,22), impossible(a,36), impossible(a,53), impossible(a,71), do(a4,23), impossible(a,37), impossible(a,54), impossible(a,72), do(a24,24), impossible(a,38), impossible(a,55), impossible(a,73), do(a23,25), impossible(a,39), impossible(a,56), impossible(a,74), do(endflow,26), impossible(a,42), impossible(a,58), impossible(a,76), impossible(a,29), impossible(a,30), impossible(a,31), impossible(a,32), impossible(a,46), impossible(a,47), impossible(a,50), impossible(a,60), impossible(a,61), impossible(a,62), impossible(a,63), impossible(a,64), impossible(a,66), impossible(a,67), impossible(a,40), impossible(a,44), impossible(a,75), impossible(a,41), impossible(a,57), impossible(a,49), impossible(a,65), impossible(a,34), impossible(a,45), impossible(a,69), comp(a21,8,x28,21), impossible(a,28), impossible(a,48), impossible(a,43), impossible(a,59), impossible(a,77), nextvis(13,14), nextvis(14,15), nextvis(17,18), nextvis(20,21), nextvis(21,22), nextvis(22,23), nextvis(23,24), nextvis(24,25), nextvis(25,26), nextvis(8,13), nextvis(15,17), nextvis(18,20), nextvis(26,27)}