Gurobi 5.0.1 (linux64) logging started Sun Nov 18 04:08:22 2012 Optimize a model with 401 rows, 285 columns and 1285 nonzeros Presolve time: 0.00s Presolved: 401 rows, 285 columns, 1285 nonzeros Variable types: 0 continuous, 285 integer (285 binary) Found heuristic solution: objective 86.0000000 Root relaxation: objective 0.000000e+00, 135 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 85 86.00000 0.00000 100% - 0s H 0 0 75.0000000 0.00000 100% - 0s H 0 0 74.0000000 0.00000 100% - 0s 0 0 0.79095 0 87 74.00000 0.79095 98.9% - 0s H 0 0 71.0000000 0.79095 98.9% - 0s 0 0 0.87381 0 87 71.00000 0.87381 98.8% - 0s H 0 0 65.0000000 0.87381 98.7% - 0s 0 0 0.88000 0 90 65.00000 0.88000 98.6% - 0s H 0 0 64.0000000 0.88000 98.6% - 0s H 0 0 62.0000000 0.88000 98.6% - 0s 0 2 0.91124 0 90 62.00000 0.91124 98.5% - 0s H 56 56 61.0000000 4.64937 92.4% 27.9 0s H 56 56 59.0000000 4.64937 92.1% 27.9 0s * 58 54 35 58.0000000 4.64937 92.0% 27.1 0s * 103 84 30 53.0000000 4.71474 91.1% 24.6 0s H 108 76 51.0000000 6.75499 86.8% 23.7 0s * 155 115 35 49.0000000 6.75499 86.2% 22.6 0s * 156 105 35 48.0000000 6.75499 85.9% 22.5 0s * 211 151 25 47.0000000 6.81319 85.5% 22.9 0s * 273 186 28 46.0000000 9.24217 79.9% 23.1 0s * 332 225 26 45.0000000 9.32899 79.3% 23.3 0s * 689 370 34 41.0000000 13.70990 66.6% 23.5 1s * 1267 426 32 40.0000000 19.00000 52.5% 23.1 1s * 2680 562 28 39.0000000 24.16327 38.0% 21.3 3s 4747 641 36.23881 24 130 39.00000 27.37500 29.8% 21.0 5s Cutting planes: Gomory: 1 Zero half: 1 Mod-K: 2 Explored 9325 nodes (188739 simplex iterations) in 8.88 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%