Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:52:59 2012 Optimize a model with 463 rows, 297 columns and 1452 nonzeros Presolve time: 0.00s Presolved: 463 rows, 297 columns, 1452 nonzeros Variable types: 0 continuous, 297 integer (297 binary) Found heuristic solution: objective 112.0000000 Root relaxation: objective 0.000000e+00, 101 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 66 112.00000 0.00000 100% - 0s H 0 0 99.0000000 0.00000 100% - 0s 0 0 0.93750 0 68 99.00000 0.93750 99.1% - 0s 0 0 0.93750 0 70 99.00000 0.93750 99.1% - 0s 0 0 0.96875 0 68 99.00000 0.96875 99.0% - 0s 0 0 0.96875 0 68 99.00000 0.96875 99.0% - 0s 0 0 0.96875 0 68 99.00000 0.96875 99.0% - 0s H 0 0 90.0000000 0.96875 98.9% - 0s H 0 0 84.0000000 0.96875 98.8% - 0s 0 2 1.02031 0 68 84.00000 1.02031 98.8% - 0s * 54 51 31 81.0000000 4.31034 94.7% 29.3 0s * 108 91 32 78.0000000 4.31939 94.5% 27.2 0s * 164 132 30 77.0000000 7.80804 89.9% 27.2 0s * 244 166 27 67.0000000 7.92875 88.2% 29.2 0s * 400 285 25 66.0000000 14.00000 78.8% 29.8 0s * 1227 564 34 65.0000000 22.52632 65.3% 28.8 1s * 1525 571 31 64.0000000 27.63636 56.8% 28.3 2s * 1836 594 32 63.0000000 30.85714 51.0% 28.1 2s H 2006 630 61.0000000 31.50000 48.4% 27.8 2s H 2448 718 60.0000000 32.00000 46.7% 27.4 3s H 2531 713 59.0000000 32.16000 45.5% 27.3 3s H 2585 702 58.0000000 32.57143 43.8% 27.2 3s 3619 854 41.24138 23 134 58.00000 36.61538 36.9% 26.5 5s 8565 1151 cutoff 27 58.00000 43.47500 25.0% 24.1 10s 14472 815 55.53846 27 148 58.00000 48.13333 17.0% 22.8 15s Cutting planes: Gomory: 1 Zero half: 4 Explored 18251 nodes (401804 simplex iterations) in 17.82 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.800000000000e+01, best bound 5.800000000000e+01, gap 0.0%