Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:00:45 2013

Optimize a model with 279 rows, 1044 columns and 41169 nonzeros
Presolve removed 45 rows and 91 columns
Presolve time: 0.16s
Presolved: 234 rows, 953 columns, 35742 nonzeros
Variable types: 0 continuous, 953 integer (953 binary)
Found heuristic solution: objective 799.0000000
Found heuristic solution: objective 648.0000000

Root relaxation: objective 5.926667e+02, 141 iterations, 0.00 seconds

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

     0     0  592.66667    0   11  648.00000  592.66667  8.54%     -    0s
H    0     0                     626.0000000  592.66667  5.32%     -    0s
     0     0  608.25000    0   16  626.00000  608.25000  2.84%     -    0s
*    0     0               0     611.0000000  611.00000   0.0%     -    0s

Explored 0 nodes (319 simplex iterations) in 0.37 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.110000000000e+02, best bound 6.110000000000e+02, gap 0.0%