Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:01:18 2013

Optimize a model with 552 rows, 4105 columns and 202601 nonzeros
Presolve removed 47 rows and 166 columns
Presolve time: 1.11s
Presolved: 505 rows, 3939 columns, 194367 nonzeros
Variable types: 0 continuous, 3939 integer (3939 binary)
Found heuristic solution: objective 2755.0000000
Found heuristic solution: objective 2106.0000000

Root relaxation: objective 1.710000e+03, 618 iterations, 0.05 seconds

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

*    0     0               0    1710.0000000 1710.00000   0.0%     -    1s

Explored 0 nodes (618 simplex iterations) in 1.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.710000000000e+03, best bound 1.710000000000e+03, gap 0.0%