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

Optimize a model with 575 rows, 4169 columns and 221053 nonzeros
Presolve removed 40 rows and 65 columns
Presolve time: 1.15s
Presolved: 535 rows, 4104 columns, 218353 nonzeros
Variable types: 0 continuous, 4104 integer (4104 binary)
Found heuristic solution: objective 2821.0000000
Found heuristic solution: objective 2354.0000000

Root relaxation: objective 2.066000e+03, 657 iterations, 0.05 seconds

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

*    0     0               0    2066.0000000 2066.00000   0.0%     -    1s

Explored 0 nodes (657 simplex iterations) in 1.23 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.066000000000e+03, best bound 2.066000000000e+03, gap 0.0%