Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:25:52 2012 Optimize a model with 481 rows, 332 columns and 1532 nonzeros Presolve time: 0.00s Presolved: 481 rows, 332 columns, 1532 nonzeros Variable types: 0 continuous, 332 integer (332 binary) Found heuristic solution: objective 97.0000000 Root relaxation: objective 0.000000e+00, 132 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 92 97.00000 0.00000 100% - 0s H 0 0 92.0000000 0.00000 100% - 0s 0 0 0.70930 0 94 92.00000 0.70930 99.2% - 0s H 0 0 88.0000000 0.70930 99.2% - 0s 0 0 0.72093 0 94 88.00000 0.72093 99.2% - 0s H 0 0 86.0000000 0.72093 99.2% - 0s 0 0 0.77907 0 94 86.00000 0.77907 99.1% - 0s 0 0 0.78902 0 102 86.00000 0.78902 99.1% - 0s 0 2 0.80175 0 102 86.00000 0.80175 99.1% - 0s H 44 44 83.0000000 3.97674 95.2% 33.6 0s H 55 55 74.0000000 3.97674 94.6% 30.8 0s * 60 55 33 59.0000000 3.97674 93.3% 29.8 0s * 111 82 32 54.0000000 4.02736 92.5% 27.7 0s * 651 381 34 52.0000000 14.53947 72.0% 29.1 0s * 728 390 33 51.0000000 14.53947 71.5% 29.4 0s H 989 484 50.0000000 17.49354 65.0% 29.5 1s H 1485 418 45.0000000 24.70930 45.1% 27.9 1s 3933 815 34.63855 20 146 45.00000 32.01661 28.9% 23.8 5s 8660 1043 38.51250 22 155 45.00000 36.30769 19.3% 20.9 10s 13917 341 42.31169 23 152 45.00000 40.76667 9.41% 19.8 15s Cutting planes: Gomory: 1 Mod-K: 3 Explored 14477 nodes (284391 simplex iterations) in 15.44 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.500000000000e+01, best bound 4.500000000000e+01, gap 0.0%