Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:00:55 2012 Optimize a model with 61869 rows, 53130 columns and 237588 nonzeros Presolve removed 2331 rows and 6672 columns Presolve time: 1.83s Presolved: 59538 rows, 46458 columns, 224650 nonzeros Variable types: 0 continuous, 46458 integer (46458 binary) Found heuristic solution: objective 230.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 33426 3.0000793e+00 3.578571e+01 0.000000e+00 5s 38396 3.0000845e+00 5.889088e+01 0.000000e+00 10s 41921 3.0000873e+00 3.100434e+01 0.000000e+00 15s 45305 3.0000901e+00 1.214003e+02 0.000000e+00 20s 48407 3.0000916e+00 5.300326e+01 0.000000e+00 25s 51509 3.0000933e+00 5.318750e+02 0.000000e+00 30s 54470 3.0000950e+00 2.141905e+01 0.000000e+00 35s 57572 3.0000969e+00 5.546703e+01 0.000000e+00 40s 60815 3.0001004e+00 9.814286e+01 0.000000e+00 45s 63776 3.0001025e+00 5.168093e+01 0.000000e+00 50s 66596 3.0001060e+00 4.977384e+00 0.000000e+00 55s 69352 3.0000000e+00 0.000000e+00 0.000000e+00 60s Root relaxation: objective 3.000000e+00, 69352 iterations, 59.78 seconds Total elapsed time = 115.83s Total elapsed time = 122.68s Total elapsed time = 126.53s Total elapsed time = 132.48s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 302 230.00000 3.00000 98.7% - 132s H 0 0 3.0000000 3.00000 0.0% - 133s Explored 0 nodes (183633 simplex iterations) in 133.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%