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(8,19), 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(19,20), next(20,21), next(21,22), next(22,23), next(23,24), next(24,25), next(25,26), next(26,27), next(27,28), next(28,29), doAt(startflow,5), doAt(a10,6), doAt(a14,8), doAt(a2,9), doAt(a7,10), doAt(a13,11), doAt(a12,12), doAt(a12,23), doAt(a1,13), doAt(a1,24), doAt(a11,14), doAt(a11,25), doAt(a4,15), doAt(a4,26), doAt(a15,16), doAt(a15,27), doAt(endflow,17), doAt(endflow,28), doAt(a8,19), doAt(a9,20), doAt(a5,21), doAt(a6,22), ineffset(startflow,x3), ineffset(startflow,x1), ineffset(startflow,x2), ineffset(a10,x1), ineffset(a14,co28), ineffset(a14,co29), ineffset(a2,x3), ineffset(a7,x3), ineffset(a7,x1), ineffset(a7,x2), ineffset(a13,x3), ineffset(a13,x1), ineffset(a13,x2), ineffset(a12,x2), ineffset(a1,x3), ineffset(a11,x3), ineffset(a4,x3), ineffset(a4,x1), ineffset(a4,x2), ineffset(a15,x3), ineffset(a15,x1), ineffset(a15,x2), ineffset(endflow,x1), ineffset(endflow,x2), ineffset(endflow,finished), ineffset(a8,x3), ineffset(a8,x1), ineffset(a8,x2), ineffset(a9,x3), ineffset(a9,x2), ineffset(a5,x3), ineffset(a5,x2), ineffset(a6,x1), ineffset(a6,x2), activity(startflow), activity(a10), activity(a14), activity(a2), activity(a7), activity(a13), activity(a12), activity(a1), activity(a11), activity(a4), activity(a15), activity(endflow), activity(a8), activity(a9), activity(a5), activity(a6), effectsObserved(startflow,1), effectsObserved(a10,2), effectsObserved(a14,3), effectsObserved(a2,4), inreadset(a10,x2), inreadset(a14,x3), inreadset(a14,x1), inreadset(a2,x1), inreadset(a7,x1), inreadset(a7,x2), inreadset(a13,x3), inreadset(a13,x1), inreadset(a12,x3), inreadset(a1,x2), inreadset(a11,x3), inreadset(a11,x1), inreadset(a11,x2), inreadset(a4,x1), inreadset(a15,x3), inreadset(a15,x1), inreadset(a15,x2), inreadset(endflow,x3), inreadset(endflow,x1), inreadset(endflow,x2), inreadset(endflow,co28), inreadset(endflow,co29), inreadset(endflow,finished), inreadset(a8,x3), inreadset(a8,x1), inreadset(a9,x3), inreadset(a9,x1), inreadset(a5,x3), inreadset(a6,x2), do(startflow,1), do(a10,2), do(a14,3), do(a2,4), nextvis(1,2), nextvis(2,3), nextvis(3,4), do(a2,9), do(a7,10), do(a13,11), do(a12,12), impossible(a,23), do(a1,13), impossible(a,24), do(a11,14), impossible(a,25), do(a4,15), impossible(a,26), do(a15,16), impossible(a,27), do(endflow,17), impossible(a,28), impossible(a,19), impossible(a,20), impossible(a,21), impossible(a,22), comp(a2,4,x3,7), impossible(a,29), 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(4,7), nextvis(7,9), nextvis(17,18)}