Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:01:03 2013

Optimize a model with 557 rows, 3551 columns and 196767 nonzeros
Presolve removed 52 rows and 85 columns
Presolve time: 3.57s
Presolved: 505 rows, 3466 columns, 191920 nonzeros
Variable types: 0 continuous, 3466 integer (3466 binary)
Found heuristic solution: objective 2669.0000000
Found heuristic solution: objective 2275.0000000

Root relaxation: objective 1.635000e+03, 480 iterations, 0.04 seconds

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

*    0     0               0    1635.0000000 1635.00000   0.0%     -    3s

Explored 0 nodes (480 simplex iterations) in 3.64 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.635000000000e+03, best bound 1.635000000000e+03, gap 0.0%