Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:00:43 2013

Optimize a model with 319 rows, 1164 columns and 53839 nonzeros
Presolve removed 52 rows and 113 columns
Presolve time: 0.44s
Presolved: 267 rows, 1051 columns, 49523 nonzeros
Variable types: 0 continuous, 1051 integer (1051 binary)
Found heuristic solution: objective 791.0000000
Found heuristic solution: objective 774.0000000

Root relaxation: objective 6.480000e+02, 109 iterations, 0.00 seconds

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

*    0     0               0     648.0000000  648.00000   0.0%     -    0s

Explored 0 nodes (109 simplex iterations) in 0.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.480000000000e+02, best bound 6.480000000000e+02, gap 0.0%