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(7,21), next(8,9), next(9,10), next(10,11), next(10,14), next(11,12), next(12,13), next(14,15), next(14,18), next(15,16), next(16,17), next(18,19), next(19,20), next(21,22), next(22,23), next(23,24), next(24,25), next(24,42), next(25,26), next(26,27), next(27,28), next(28,29), next(29,30), next(30,31), next(31,32), next(31,35), next(32,33), next(33,34), next(35,36), next(35,39), next(36,37), next(37,38), next(39,40), next(40,41), next(42,43), next(43,44), next(44,45), next(45,46), next(46,47), next(47,48), next(48,49), next(48,64), next(49,50), next(50,51), next(51,52), next(52,53), next(53,54), next(53,57), next(54,55), next(55,56), next(57,58), next(57,61), next(58,59), next(59,60), next(61,62), next(62,63), next(64,65), next(65,66), next(66,67), next(67,68), next(68,69), next(69,70), next(69,73), next(70,71), next(71,72), next(73,74), next(73,77), next(74,75), next(75,76), next(77,78), next(78,79), doAt(startflow,5), doAt(a21,7), doAt(a24,9), doAt(a11,10), doAt(a11,31), doAt(a11,53), doAt(a11,69), doAt(a12,11), doAt(a12,32), doAt(a12,54), doAt(a12,70), doAt(endflow,12), doAt(endflow,16), doAt(endflow,19), doAt(endflow,33), doAt(endflow,37), doAt(endflow,40), doAt(endflow,55), doAt(endflow,59), doAt(endflow,62), doAt(endflow,71), doAt(endflow,75), doAt(endflow,78), doAt(a23,14), doAt(a23,35), doAt(a23,57), doAt(a23,73), doAt(a18,15), doAt(a18,36), doAt(a18,58), doAt(a18,74), doAt(a8,18), doAt(a8,39), doAt(a8,61), doAt(a8,77), doAt(a15,21), doAt(a19,22), doAt(a20,23), doAt(a16,24), doAt(a9,26), doAt(a22,28), doAt(a22,50), doAt(a22,66), doAt(a2,29), doAt(a2,51), doAt(a2,67), doAt(a13,30), doAt(a13,52), doAt(a13,68), doAt(a7,43), doAt(a14,44), doAt(a5,45), doAt(a25,46), doAt(a17,47), doAt(a1,48), doAt(a6,49), doAt(a4,64), doAt(a3,65), subsAt(a24,8), ineffset(startflow,x8), ineffset(startflow,x11), ineffset(startflow,x23), ineffset(startflow,x1), ineffset(startflow,x2), ineffset(startflow,x3), ineffset(startflow,x4), ineffset(startflow,x5), ineffset(startflow,x6), ineffset(startflow,x7), 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,x18), ineffset(startflow,x19), ineffset(startflow,x20), ineffset(startflow,x21), ineffset(startflow,x22), ineffset(startflow,x24), ineffset(startflow,x25), ineffset(a21,co42), ineffset(a21,co43), ineffset(a24,x8), ineffset(a24,x11), ineffset(a24,x23), ineffset(a24,x9), ineffset(a11,co22), ineffset(a11,co23), ineffset(a12,x8), ineffset(a12,x23), ineffset(a12,x6), ineffset(endflow,x23), ineffset(endflow,x13), ineffset(endflow,finished), ineffset(a23,co46), ineffset(a23,co47), ineffset(a18,x8), ineffset(a18,x6), ineffset(a18,x7), ineffset(a18,x10), ineffset(a8,x3), ineffset(a8,x17), ineffset(a15,x3), ineffset(a15,x9), ineffset(a15,x18), ineffset(a19,x13), ineffset(a20,x10), ineffset(a20,x16), ineffset(a16,co32), ineffset(a16,co33), ineffset(a9,x7), ineffset(a22,x4), ineffset(a2,x1), ineffset(a2,x3), ineffset(a2,x6), ineffset(a2,x13), ineffset(a13,x8), ineffset(a13,x21), ineffset(a7,x12), ineffset(a7,x16), ineffset(a14,x23), ineffset(a14,x3), ineffset(a14,x13), ineffset(a14,x15), ineffset(a5,x21), ineffset(a25,x23), ineffset(a25,x4), ineffset(a17,x17), ineffset(a17,x22), ineffset(a1,co2), ineffset(a1,co3), ineffset(a6,x11), ineffset(a6,x13), ineffset(a6,x18), ineffset(a6,x22), ineffset(a4,x6), ineffset(a3,x20), inreadset(a21,x8), inreadset(a21,x7), inreadset(a24,x3), inreadset(a11,x7), inreadset(a11,x9), inreadset(a11,x10), inreadset(a12,x11), inreadset(a12,x20), inreadset(a12,x22), inreadset(endflow,x8), inreadset(endflow,x11), inreadset(endflow,x23), inreadset(endflow,x1), inreadset(endflow,x2), inreadset(endflow,x3), inreadset(endflow,x4), inreadset(endflow,x5), inreadset(endflow,x6), inreadset(endflow,x7), 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,x18), inreadset(endflow,x19), inreadset(endflow,x20), inreadset(endflow,x21), inreadset(endflow,x22), inreadset(endflow,x24), inreadset(endflow,x25), inreadset(a23,x18), inreadset(a18,x6), inreadset(a8,x4), inreadset(a15,x1), inreadset(a15,x4), inreadset(a19,x7), inreadset(a20,x7), inreadset(a16,x8), inreadset(a16,x16), inreadset(a9,x11), inreadset(a9,x5), inreadset(a9,x10), inreadset(a22,x23), inreadset(a22,x2), inreadset(a2,x3), inreadset(a13,x15), inreadset(a7,x11), inreadset(a7,x17), inreadset(a14,x10), inreadset(a14,x12), inreadset(a14,x25), inreadset(a5,x10), inreadset(a25,x8), inreadset(a25,x21), inreadset(a25,x22), inreadset(a17,x8), inreadset(a17,x2), inreadset(a1,x14), inreadset(a6,x1), inreadset(a6,x9), inreadset(a6,x19), inreadset(a4,x4), inreadset(a3,x11), inreadset(a3,x23), inreadset(a3,x6), activity(startflow), activity(a21), activity(a24), activity(a11), activity(a12), activity(endflow), activity(a23), activity(a18), activity(a8), activity(a15), activity(a19), activity(a20), activity(a16), activity(a9), activity(a22), activity(a2), activity(a13), activity(a7), activity(a14), activity(a5), activity(a25), activity(a17), activity(a1), activity(a6), activity(a4), activity(a3), effectsObserved(startflow,1), effectsObserved(a21,2), effectsObserved(a24,3), effectsObserved(a11,4), do(startflow,1), do(a21,2), do(a24,3), do(a11,4), nextvis(1,2), nextvis(2,3), nextvis(3,4), subs(a24,8), do(a24,9), do(a11,10), impossible(a,31), impossible(a,53), impossible(a,69), do(a12,11), impossible(a,32), impossible(a,54), impossible(a,70), do(endflow,12), do(endflow,16), do(endflow,19), impossible(a,33), impossible(a,37), impossible(a,40), impossible(a,55), impossible(a,59), impossible(a,62), impossible(a,71), impossible(a,75), impossible(a,78), do(a23,14), impossible(a,35), impossible(a,57), impossible(a,73), do(a18,15), impossible(a,36), impossible(a,58), impossible(a,74), do(a8,18), impossible(a,39), impossible(a,61), impossible(a,77), impossible(a,21), impossible(a,22), impossible(a,23), impossible(a,24), impossible(a,26), impossible(a,28), impossible(a,50), impossible(a,66), impossible(a,29), impossible(a,51), impossible(a,67), impossible(a,30), impossible(a,52), impossible(a,68), impossible(a,43), impossible(a,44), impossible(a,45), impossible(a,46), impossible(a,47), impossible(a,48), impossible(a,49), impossible(a,64), impossible(a,65), impossible(a,25), impossible(a,42), impossible(a,27), impossible(a,38), impossible(a,41), impossible(a,60), impossible(a,63), impossible(a,76), impossible(a,79), impossible(a,34), impossible(a,56), impossible(a,72), nextvis(8,9), nextvis(9,10), nextvis(10,11), nextvis(10,14), nextvis(11,12), nextvis(14,15), nextvis(14,18), nextvis(15,16), nextvis(18,19), nextvis(4,8), nextvis(12,13), nextvis(16,17), nextvis(19,20)}