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(4,16), next(5,6), next(6,7), next(7,8), next(8,9), next(9,10), next(9,13), next(10,11), next(11,12), next(13,14), next(14,15), next(16,17), next(17,18), next(18,19), next(19,20), next(19,59), next(20,21), next(20,45), next(21,22), next(21,33), next(22,23), next(23,24), next(24,25), next(25,26), next(26,27), next(26,30), next(27,28), next(28,29), next(30,31), next(31,32), next(33,34), next(34,35), next(35,36), next(36,37), next(37,38), next(38,39), next(38,42), next(39,40), next(40,41), next(42,43), next(43,44), 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(52,56), next(53,54), next(54,55), next(56,57), next(57,58), next(59,60), next(60,61), next(61,62), next(62,63), next(63,64), next(64,65), next(65,66), next(65,69), next(66,67), next(67,68), next(69,70), next(70,71), doAt(startflow,3), doAt(a23,4), doAt(a8,5), doAt(a16,6), doAt(a16,23), doAt(a16,35), doAt(a16,49), doAt(a16,62), doAt(a12,7), doAt(a12,24), doAt(a12,36), doAt(a12,50), doAt(a12,63), doAt(a22,8), doAt(a22,25), doAt(a22,37), doAt(a22,51), doAt(a22,64), doAt(a20,9), doAt(a20,26), doAt(a20,38), doAt(a20,52), doAt(a20,65), doAt(a9,10), doAt(a9,27), doAt(a9,39), doAt(a9,53), doAt(a9,66), doAt(endflow,11), doAt(endflow,14), doAt(endflow,28), doAt(endflow,31), doAt(endflow,40), doAt(endflow,43), doAt(endflow,54), doAt(endflow,57), doAt(endflow,67), doAt(endflow,70), doAt(a5,13), doAt(a5,30), doAt(a5,42), doAt(a5,56), doAt(a5,69), doAt(a6,16), doAt(a2,17), doAt(a18,18), doAt(a7,19), doAt(a25,20), doAt(a10,21), doAt(a13,22), doAt(a17,33), doAt(a15,34), doAt(a4,45), doAt(a11,46), doAt(a19,47), doAt(a3,48), doAt(a1,59), doAt(a21,60), doAt(a14,61), 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(a23,co46), ineffset(a23,co47), ineffset(a8,x11), ineffset(a8,x14), ineffset(a16,x14), ineffset(a12,x17), ineffset(a22,x9), ineffset(a22,x10), ineffset(a22,x11), ineffset(a22,x13), ineffset(a20,co40), ineffset(a20,co41), ineffset(a9,x11), ineffset(endflow,x14), ineffset(endflow,finished), ineffset(a5,x5), ineffset(a5,x15), ineffset(a5,x16), ineffset(a5,x22), ineffset(a6,x6), ineffset(a2,x17), ineffset(a18,x11), ineffset(a18,x25), ineffset(a7,co14), ineffset(a7,co15), ineffset(a25,co50), ineffset(a25,co51), ineffset(a10,co20), ineffset(a10,co21), ineffset(a13,x3), ineffset(a17,x9), ineffset(a17,x16), ineffset(a17,x18), ineffset(a15,x3), ineffset(a4,x20), ineffset(a11,x4), ineffset(a11,x9), ineffset(a11,x14), ineffset(a11,x19), ineffset(a19,x2), ineffset(a19,x11), ineffset(a3,x2), ineffset(a1,x13), ineffset(a21,x22), ineffset(a14,x3), ineffset(a14,x7), ineffset(a14,x21), ineffset(a14,x23), inreadset(a23,x20), inreadset(a8,x8), inreadset(a8,x13), inreadset(a8,x19), inreadset(a16,x5), inreadset(a12,x11), inreadset(a12,x16), inreadset(a12,x18), inreadset(a22,x25), inreadset(a20,x12), inreadset(a20,x13), inreadset(a9,x11), inreadset(a9,x21), inreadset(a9,x22), 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(a5,x13), inreadset(a5,x18), inreadset(a6,x1), inreadset(a2,x6), inreadset(a2,x23), inreadset(a18,x20), inreadset(a7,x8), inreadset(a7,x12), inreadset(a7,x13), inreadset(a25,x7), inreadset(a25,x18), inreadset(a10,x6), inreadset(a10,x24), inreadset(a13,x1), inreadset(a13,x10), inreadset(a13,x20), inreadset(a17,x2), inreadset(a15,x5), inreadset(a15,x8), inreadset(a15,x24), inreadset(a4,x1), inreadset(a4,x19), inreadset(a11,x12), inreadset(a19,x17), inreadset(a3,x17), inreadset(a3,x19), inreadset(a1,x5), inreadset(a1,x8), inreadset(a1,x24), inreadset(a21,x22), inreadset(a14,x13), activity(startflow), activity(a23), activity(a8), activity(a16), activity(a12), activity(a22), activity(a20), activity(a9), activity(endflow), activity(a5), activity(a6), activity(a2), activity(a18), activity(a7), activity(a25), activity(a10), activity(a13), activity(a17), activity(a15), activity(a4), activity(a11), activity(a19), activity(a3), activity(a1), activity(a21), activity(a14), effectsObserved(startflow,1), effectsObserved(a23,2), do(startflow,1), do(a23,2), nextvis(1,2), do(a8,5), do(a16,6), impossible(a,23), impossible(a,35), impossible(a,49), impossible(a,62), do(a12,7), impossible(a,24), impossible(a,36), impossible(a,50), impossible(a,63), do(a22,8), impossible(a,25), impossible(a,37), impossible(a,51), impossible(a,64), do(a20,9), impossible(a,26), impossible(a,38), impossible(a,52), impossible(a,65), do(a9,10), impossible(a,27), impossible(a,39), impossible(a,53), impossible(a,66), do(endflow,11), do(endflow,14), impossible(a,28), impossible(a,31), impossible(a,40), impossible(a,43), impossible(a,54), impossible(a,57), impossible(a,67), impossible(a,70), do(a5,13), impossible(a,30), impossible(a,42), impossible(a,56), impossible(a,69), impossible(a,16), impossible(a,17), impossible(a,18), impossible(a,19), impossible(a,20), impossible(a,21), impossible(a,22), impossible(a,33), impossible(a,34), impossible(a,45), impossible(a,46), impossible(a,47), impossible(a,48), impossible(a,59), impossible(a,60), impossible(a,61), impossible(a,29), impossible(a,32), impossible(a,68), impossible(a,71), impossible(a,41), impossible(a,44), impossible(a,55), impossible(a,58), nextvis(5,6), nextvis(6,7), nextvis(7,8), nextvis(8,9), nextvis(9,10), nextvis(9,13), nextvis(10,11), nextvis(13,14), nextvis(2,5), nextvis(11,12), nextvis(14,15)}