Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:40:44 2012 Optimize a model with 70063 rows, 54056 columns and 263086 nonzeros Presolve removed 1407 rows and 3480 columns (presolve time = 5s) ... Presolve removed 1409 rows and 3482 columns Presolve time: 5.56s Presolved: 68654 rows, 50574 columns, 255534 nonzeros Variable types: 0 continuous, 50574 integer (50574 binary) Found heuristic solution: objective 232.0000000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 37051 3.0001074e+00 1.063258e+03 0.000000e+00 5s 42527 3.0001505e+00 1.519600e+03 0.000000e+00 10s 46199 3.0001811e+00 6.250000e+02 0.000000e+00 15s 49370 3.0002055e+00 1.189225e+03 0.000000e+00 20s 52692 3.0002237e+00 2.728696e+02 0.000000e+00 25s 56165 3.0002358e+00 3.311667e+02 0.000000e+00 30s 59487 3.0002502e+00 2.456111e+02 0.000000e+00 35s 62356 3.0002629e+00 8.076738e+01 0.000000e+00 40s 64621 3.0002664e+00 1.735570e-01 0.000000e+00 45s 64665 3.0000000e+00 0.000000e+00 0.000000e+00 45s Root relaxation: objective 3.000000e+00, 64665 iterations, 45.28 seconds Total elapsed time = 106.99s Total elapsed time = 118.08s 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% - 121s Explored 0 nodes (176556 simplex iterations) in 121.04 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%