Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:01:20 2013

Optimize a model with 624 rows, 4633 columns and 264619 nonzeros
Presolve removed 13 rows and 13 columns
Presolve time: 2.38s
Presolved: 611 rows, 4620 columns, 263722 nonzeros
Variable types: 0 continuous, 4620 integer (4620 binary)
Found heuristic solution: objective 3324.0000000
Found heuristic solution: objective 2575.0000000

Root relaxation: objective 2.064000e+03, 773 iterations, 0.08 seconds

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

*    0     0               0    2064.0000000 2064.00000   0.0%     -    2s

Explored 0 nodes (773 simplex iterations) in 2.50 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.064000000000e+03, best bound 2.064000000000e+03, gap 0.0%