Gurobi 5.0.1 (linux64) logging started Fri Nov 16 23:44:53 2012

Optimize a model with 41817 rows, 41412 columns and 165849 nonzeros
Presolve removed 429 rows and 4265 columns
Presolve time: 1.04s
Presolved: 41388 rows, 37147 columns, 160163 nonzeros
Variable types: 0 continuous, 37147 integer (37147 binary)
Found heuristic solution: objective 203.0000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
   32307    3.0000766e+00   3.493946e+01   0.000000e+00      5s
   37039    3.0000000e+00   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 3.000000e+00, 37039 iterations, 7.67 seconds
Total elapsed time = 21.66s

    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%     -   23s

Explored 0 nodes (91311 simplex iterations) in 23.46 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%