Gurobi 5.0.1 (linux64) logging started Sat Nov 17 11:15:21 2012 Optimize a model with 83079 rows, 61752 columns and 309750 nonzeros Presolve removed 763 rows and 4712 columns (presolve time = 5s) ... Presolve removed 765 rows and 4714 columns Presolve time: 7.40s Presolved: 82314 rows, 57038 columns, 302638 nonzeros Variable types: 0 continuous, 57038 integer (57038 binary) Found heuristic solution: objective 248.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 37281 3.0000870e+00 9.145833e+01 0.000000e+00 5s 41131 3.0000934e+00 2.344444e+01 0.000000e+00 10s 44065 3.0000953e+00 5.769782e+01 0.000000e+00 15s 46347 3.0000967e+00 1.774319e+02 0.000000e+00 20s 48792 3.0000983e+00 1.700598e+02 0.000000e+00 25s 51074 3.0000996e+00 8.980931e+01 0.000000e+00 30s 53356 3.0001009e+00 5.071005e+01 0.000000e+00 35s 55964 3.0001025e+00 6.554274e+01 0.000000e+00 40s 58572 3.0001053e+00 2.169687e+01 0.000000e+00 45s 61343 3.0001089e+00 7.504762e+01 0.000000e+00 50s 63951 3.0001123e+00 9.571143e+00 0.000000e+00 55s 66233 3.0001147e+00 1.011187e+02 0.000000e+00 60s 68678 3.0001180e+00 2.537645e+01 0.000000e+00 65s 71123 3.0001220e+00 1.491699e+01 0.000000e+00 70s 73405 3.0001230e+00 3.831377e+00 0.000000e+00 75s 73741 3.0000000e+00 0.000000e+00 0.000000e+00 76s Root relaxation: objective 3.000000e+00, 73741 iterations, 76.04 seconds Total elapsed time = 161.06s 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% - 162s Explored 0 nodes (139690 simplex iterations) in 162.25 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%