Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:45:34 2012

Optimize a model with 4171 rows, 9506 columns and 21631 nonzeros
Presolve removed 40 rows and 3880 columns
Presolve time: 0.14s
Presolved: 4131 rows, 5626 columns, 17751 nonzeros
Variable types: 0 continuous, 5626 integer (5626 binary)
Found heuristic solution: objective 23.0000000
Found heuristic solution: objective 2.0000000

Root relaxation: cutoff, 3342 iterations, 0.05 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0     cutoff    0         2.00000    1.00000  50.0%     -    0s

Explored 0 nodes (3342 simplex iterations) in 0.20 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%