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(13,18), next(14,15), next(15,16), next(16,17), 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(25,30), next(26,27), next(27,28), next(28,29), next(30,31), next(31,32), next(32,33), next(33,34), next(33,46), next(34,35), next(34,38), next(35,36), next(36,37), next(38,39), next(39,40), next(40,41), next(41,42), next(42,43), next(43,44), next(44,45), next(46,47), next(47,48), doAt(startflow,7), doAt(a6,9), doAt(a12,10), doAt(a7,12), doAt(a14,13), doAt(a19,15), doAt(endflow,16), doAt(endflow,28), doAt(endflow,36), doAt(endflow,44), doAt(endflow,47), doAt(a25,19), doAt(a21,20), doAt(a2,21), doAt(a23,22), doAt(a17,23), doAt(a3,25), doAt(a5,26), doAt(a8,31), doAt(a13,32), doAt(a18,33), doAt(a10,34), doAt(a16,35), doAt(a11,38), doAt(a15,39), 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ineffset(a21,x8), ineffset(a21,x21), ineffset(a2,x8), ineffset(a23,x19), ineffset(a23,x4), ineffset(a23,x14), ineffset(a23,x22), ineffset(a17,x3), ineffset(a17,x14), ineffset(a3,co6), ineffset(a3,co7), ineffset(a5,x2), ineffset(a5,x7), ineffset(a5,x11), ineffset(a5,x15), ineffset(a8,x2), ineffset(a13,x21), ineffset(a18,co36), ineffset(a18,co37), ineffset(a10,co20), ineffset(a10,co21), ineffset(a16,x12), ineffset(a16,x19), ineffset(a16,x4), ineffset(a16,x11), ineffset(a11,x3), ineffset(a15,x24), ineffset(a15,x3), ineffset(a15,x20), ineffset(a9,x5), ineffset(a24,x24), ineffset(a24,x3), ineffset(a24,x20), ineffset(a24,x22), ineffset(a1,x13), ineffset(a1,x14), ineffset(a1,x22), ineffset(a20,x22), ineffset(a22,x12), ineffset(a22,x6), ineffset(a22,x16), inreadset(a6,x12), inreadset(a12,x12), inreadset(a12,x10), inreadset(a7,x19), inreadset(a7,x7), inreadset(a7,x10), inreadset(a14,x1), inreadset(a14,x7), inreadset(a14,x18), inreadset(a19,x6), inreadset(endflow,x12), inreadset(endflow,x19), 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inreadset(a16,x7), inreadset(a16,x13), inreadset(a11,x7), inreadset(a11,x8), inreadset(a11,x21), inreadset(a15,x2), inreadset(a9,x3), inreadset(a24,x16), inreadset(a1,x2), inreadset(a20,x8), inreadset(a22,x19), activity(startflow), activity(a6), activity(a12), activity(a7), activity(a14), activity(a19), activity(endflow), activity(a25), activity(a21), activity(a2), activity(a23), activity(a17), activity(a3), activity(a5), activity(a8), activity(a13), activity(a18), activity(a10), activity(a16), activity(a11), activity(a15), activity(a9), activity(a24), activity(a1), activity(a20), activity(a22), effectsObserved(startflow,1), effectsObserved(a6,2), effectsObserved(a12,3), effectsObserved(a7,4), effectsObserved(a14,5), effectsObserved(a19,6), do(startflow,1), do(a6,2), do(a12,3), do(a7,4), do(a14,5), do(a19,6), nextvis(1,2), nextvis(2,3), nextvis(3,4), nextvis(4,5), nextvis(5,6), do(a6,9), do(a7,12), do(a19,15), do(endflow,16), impossible(a,28), impossible(a,36), impossible(a,44), 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