Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:51:02 2012

Optimize a model with 59700 rows, 51756 columns and 229722 nonzeros
Presolve removed 473 rows and 3861 columns
Presolve time: 1.54s
Presolved: 59227 rows, 47895 columns, 224206 nonzeros
Variable types: 0 continuous, 47895 integer (47895 binary)
Found heuristic solution: objective 227.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   34590    3.0001367e+00   1.358000e+02   0.000000e+00      5s
   39577    3.0001610e+00   5.700000e+01   0.000000e+00     10s
   44371    3.0001714e+00   2.843081e+02   0.000000e+00     15s
   47896    3.0001795e+00   1.388473e+02   0.000000e+00     20s
   51139    3.0001858e+00   9.734494e+01   0.000000e+00     25s
   54946    3.0001940e+00   3.932674e+00   0.000000e+00     30s
   56055    3.0000000e+00   0.000000e+00   0.000000e+00     32s

Root relaxation: objective 3.000000e+00, 56055 iterations, 31.71 seconds
Total elapsed time = 68.80s

    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%     -   71s

Explored 0 nodes (99292 simplex iterations) in 71.53 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%