Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:48:49 2012 Optimize a model with 82250 rows, 61256 columns and 306772 nonzeros Presolve removed 509 rows and 3705 columns (presolve time = 5s) ... Presolve removed 511 rows and 3707 columns Presolve time: 7.26s Presolved: 81739 rows, 57549 columns, 301170 nonzeros Variable types: 0 continuous, 57549 integer (57549 binary) Found heuristic solution: objective 247.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 39108 2.5001412e+00 1.217500e+02 0.000000e+00 5s 51903 3.0001335e+00 2.354167e+02 0.000000e+00 10s 64427 3.0001681e+00 5.720165e+02 0.000000e+00 15s 67687 3.0001713e+00 1.614784e+02 0.000000e+00 20s 69806 3.0001750e+00 1.250906e+03 0.000000e+00 25s 72251 3.0001793e+00 7.590219e+01 0.000000e+00 30s 74533 3.0001824e+00 3.360057e+01 0.000000e+00 35s 76978 3.0001858e+00 4.392431e+02 0.000000e+00 40s 79260 3.0001888e+00 1.538203e+01 0.000000e+00 45s 81868 3.0001929e+00 7.534602e+01 0.000000e+00 50s 84150 3.0001963e+00 1.063255e+02 0.000000e+00 55s 86595 3.0002002e+00 5.279125e+00 0.000000e+00 60s 88877 3.0002050e+00 1.303124e+01 0.000000e+00 65s 91322 3.0002084e+00 1.613628e+01 0.000000e+00 70s 93604 3.0002123e+00 5.641158e+01 0.000000e+00 75s 95886 3.0002149e+00 1.180932e+02 0.000000e+00 80s 98331 3.0002182e+00 4.545816e+00 0.000000e+00 85s 100092 3.0000000e+00 0.000000e+00 0.000000e+00 89s Root relaxation: objective 3.000000e+00, 100092 iterations, 88.78 seconds Total elapsed time = 171.07s Total elapsed time = 178.05s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 181s Explored 0 nodes (193745 simplex iterations) in 181.91 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%