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(16,21), next(17,18), next(18,19), next(19,20), next(21,22), next(22,23), next(23,24), next(24,25), next(25,26), next(26,27), next(27,28), next(28,29), next(29,30), next(29,34), next(30,31), next(31,32), next(32,33), next(34,35), next(35,36), next(36,37), doAt(startflow,7), doAt(a10,9), doAt(a3,13), doAt(a5,14), doAt(a1,16), doAt(a8,18), doAt(endflow,19), doAt(endflow,32), doAt(endflow,36), doAt(a4,21), doAt(a9,23), doAt(a2,24), doAt(a7,25), doAt(a13,27), doAt(a6,28), doAt(a12,29), doAt(a15,31), doAt(a14,35), ineffset(startflow,x8), ineffset(startflow,x9), ineffset(startflow,x11), ineffset(startflow,x4), ineffset(startflow,x3), ineffset(startflow,x7), ineffset(startflow,x1), ineffset(startflow,x2), ineffset(startflow,x5), ineffset(startflow,x6), ineffset(startflow,x10), ineffset(startflow,x12), ineffset(startflow,x13), ineffset(startflow,x14), ineffset(startflow,x15), ineffset(a10,x13), ineffset(a3,x12), ineffset(a5,x8), ineffset(a5,x9), ineffset(a5,x11), ineffset(a5,x7), ineffset(a1,co2), ineffset(a1,co3), ineffset(a8,x9), ineffset(a8,x4), ineffset(a8,x3), ineffset(a8,x7), ineffset(endflow,x3), ineffset(endflow,x1), ineffset(endflow,x12), ineffset(endflow,finished), ineffset(a4,x15), ineffset(a9,x8), ineffset(a9,x11), ineffset(a9,x12), ineffset(a9,x14), ineffset(a2,x5), ineffset(a2,x6), ineffset(a7,x12), ineffset(a13,x11), ineffset(a6,x9), ineffset(a6,x7), ineffset(a6,x14), ineffset(a6,x15), ineffset(a12,co24), ineffset(a12,co25), ineffset(a15,x13), ineffset(a14,x7), activity(startflow), activity(a10), activity(a3), activity(a5), activity(a1), activity(a8), activity(endflow), activity(a4), activity(a9), activity(a2), activity(a7), activity(a13), activity(a6), activity(a12), activity(a15), activity(a14), effectsObserved(startflow,1), effectsObserved(a10,2), effectsObserved(a3,3), effectsObserved(a5,4), effectsObserved(a1,5), effectsObserved(a8,6), inreadset(a10,x8), inreadset(a3,x9), inreadset(a3,x11), inreadset(a3,x14), inreadset(a5,x6), inreadset(a1,x4), inreadset(a8,x3), inreadset(a8,x2), inreadset(a8,x10), inreadset(endflow,x8), inreadset(endflow,x9), inreadset(endflow,x11), inreadset(endflow,x4), inreadset(endflow,x3), inreadset(endflow,x7), inreadset(endflow,x1), inreadset(endflow,x2), inreadset(endflow,x5), inreadset(endflow,x6), inreadset(endflow,x10), inreadset(endflow,x12), inreadset(endflow,x13), inreadset(endflow,x14), inreadset(endflow,x15), inreadset(endflow,co2), inreadset(endflow,co3), inreadset(endflow,co24), inreadset(endflow,co25), inreadset(endflow,finished), inreadset(a4,x1), inreadset(a9,x9), inreadset(a2,x1), inreadset(a2,x14), inreadset(a7,x15), inreadset(a13,x9), inreadset(a13,x7), inreadset(a6,x12), inreadset(a12,x14), inreadset(a15,x3), inreadset(a15,x15), inreadset(a14,x3), inreadset(a14,x10), do(startflow,1), do(a10,2), do(a3,3), do(a5,4), do(a1,5), do(a8,6), nextvis(1,2), nextvis(2,3), nextvis(3,4), nextvis(4,5), nextvis(5,6), do(endflow,19), impossible(a,32), impossible(a,36), impossible(a,21), impossible(a,23), impossible(a,24), impossible(a,25), impossible(a,27), impossible(a,28), impossible(a,29), impossible(a,31), impossible(a,35), impossible(a,22), impossible(a,30), impossible(a,34), impossible(a,26), impossible(a,33), impossible(a,37), nextvis(6,19), nextvis(19,20)}