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(9,32), next(10,11), next(10,14), next(11,12), next(12,13), next(14,15), next(15,16), next(15,25), 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(25,26), next(26,27), next(27,28), next(28,29), next(29,30), next(30,31), next(32,33), next(33,34), next(34,35), next(35,36), next(36,37), next(37,38), next(38,39), next(39,40), next(39,45), next(40,41), next(41,42), next(42,43), next(43,44), next(45,46), next(46,47), next(47,48), next(48,49), doAt(startflow,6), doAt(a17,8), doAt(a23,9), doAt(a20,10), doAt(a1,11), doAt(endflow,12), doAt(endflow,19), doAt(endflow,23), doAt(endflow,30), doAt(endflow,43), doAt(endflow,48), doAt(a5,14), doAt(a14,15), doAt(a24,16), doAt(a13,17), doAt(a4,21), doAt(a8,25), doAt(a6,26), doAt(a12,27), doAt(a7,28), doAt(a11,32), doAt(a21,33), doAt(a2,34), doAt(a16,35), 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activity(a19), activity(a18), activity(a22), activity(a25), activity(a10), effectsObserved(startflow,1), effectsObserved(a17,2), effectsObserved(a23,3), effectsObserved(a20,4), effectsObserved(a1,5), inreadset(a17,x15), inreadset(a17,x3), inreadset(a17,x17), inreadset(a23,x25), inreadset(a20,x15), inreadset(a20,x8), inreadset(a20,x10), inreadset(a1,x20), inreadset(a1,x21), inreadset(endflow,x15), inreadset(endflow,x4), inreadset(endflow,x1), inreadset(endflow,x2), inreadset(endflow,x3), 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,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(endflow,co46), 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