Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:57:34 2012 Optimize a model with 75151 rows, 59780 columns and 284014 nonzeros Presolve removed 746 rows and 3416 columns (presolve time = 5s) ... Presolve removed 748 rows and 3418 columns Presolve time: 6.82s Presolved: 74403 rows, 56362 columns, 278280 nonzeros Variable types: 0 continuous, 56362 integer (56362 binary) Found heuristic solution: objective 244.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 38035 2.9091903e+00 8.416364e+01 0.000000e+00 5s 48692 3.0000990e+00 2.090855e+02 0.000000e+00 10s 51968 3.0001058e+00 3.735420e+02 0.000000e+00 15s 54308 3.0001070e+00 3.920120e+01 0.000000e+00 20s 56804 3.0001079e+00 1.198429e+01 0.000000e+00 25s 59144 3.0001088e+00 1.038067e+01 0.000000e+00 30s 61640 3.0001098e+00 8.532112e+01 0.000000e+00 35s 64136 3.0001110e+00 1.853431e+01 0.000000e+00 40s 66320 3.0001119e+00 1.882924e+01 0.000000e+00 45s 68816 3.0001132e+00 4.578636e+01 0.000000e+00 50s 71312 3.0001143e+00 2.299183e+01 0.000000e+00 55s 73652 3.0001154e+00 1.873636e+02 0.000000e+00 60s 76148 3.0001170e+00 1.339875e+01 0.000000e+00 65s 78488 3.0001184e+00 1.277489e+01 0.000000e+00 70s 79666 3.0000000e+00 0.000000e+00 0.000000e+00 72s Root relaxation: objective 3.000000e+00, 79666 iterations, 71.63 seconds Total elapsed time = 147.27s Total elapsed time = 153.56s Total elapsed time = 155.16s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 246 244.00000 3.00000 98.8% - 160s H 0 0 3.0000000 3.00000 0.0% - 161s Explored 0 nodes (219044 simplex iterations) in 161.32 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%