Gurobi 5.0.1 (linux64) logging started Sat Nov 17 04:14:10 2012

Optimize a model with 57149 rows, 50850 columns and 221173 nonzeros
Presolve removed 470 rows and 4052 columns
Presolve time: 1.47s
Presolved: 56679 rows, 46798 columns, 215494 nonzeros
Variable types: 0 continuous, 46798 integer (46798 binary)
Found heuristic solution: objective 225.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   36365    3.0000902e+00   1.631637e+02   0.000000e+00      5s
   41333    3.0000976e+00   1.147115e+01   0.000000e+00     10s
   45887    3.0001021e+00   2.765850e+01   0.000000e+00     15s
   50027    3.0001059e+00   1.901882e+03   0.000000e+00     20s
   54167    3.0001096e+00   1.505000e+02   0.000000e+00     25s
   55154    3.0000000e+00   0.000000e+00   0.000000e+00     26s

Root relaxation: objective 3.000000e+00, 55154 iterations, 26.37 seconds
Total elapsed time = 72.96s
Total elapsed time = 76.60s

    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%     -   77s

Explored 0 nodes (118742 simplex iterations) in 77.26 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%