Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:16:11 2012 Optimize a model with 415 rows, 294 columns and 1329 nonzeros Presolve time: 0.00s Presolved: 415 rows, 294 columns, 1329 nonzeros Variable types: 0 continuous, 294 integer (294 binary) Found heuristic solution: objective 89.0000000 Root relaxation: objective 0.000000e+00, 124 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 87 89.00000 0.00000 100% - 0s H 0 0 78.0000000 0.00000 100% - 0s H 0 0 77.0000000 0.00000 100% - 0s 0 0 0.62553 0 89 77.00000 0.62553 99.2% - 0s 0 0 0.64549 0 89 77.00000 0.64549 99.2% - 0s 0 0 0.70538 0 92 77.00000 0.70538 99.1% - 0s 0 0 0.73363 0 89 77.00000 0.73363 99.0% - 0s 0 0 0.73868 0 93 77.00000 0.73868 99.0% - 0s 0 0 0.73868 0 93 77.00000 0.73868 99.0% - 0s H 0 0 72.0000000 0.73868 99.0% - 0s H 0 0 70.0000000 0.73868 98.9% - 0s H 0 0 69.0000000 0.73868 98.9% - 0s H 0 0 66.0000000 0.73868 98.9% - 0s 0 2 0.82764 0 93 66.00000 0.82764 98.7% - 0s * 48 48 30 55.0000000 4.13534 92.5% 26.9 0s * 54 48 33 54.0000000 4.13534 92.3% 24.3 0s H 56 43 53.0000000 4.13534 92.2% 23.4 0s H 128 86 43.0000000 7.15560 83.4% 28.0 0s * 458 252 16 42.0000000 11.14286 73.5% 27.9 0s * 1197 349 29 41.0000000 18.92308 53.8% 28.6 1s H 1508 292 40.0000000 22.51515 43.7% 27.5 1s H 3276 496 39.0000000 27.54839 29.4% 24.9 3s 4465 503 cutoff 21 39.00000 29.46939 24.4% 23.8 5s Explored 7775 nodes (170020 simplex iterations) in 7.38 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%