Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:39 2013

Optimize a model with 828 rows, 844 columns and 3282 nonzeros
Presolve removed 788 rows and 791 columns
Presolve time: 0.01s
Presolved: 40 rows, 53 columns, 160 nonzeros
Variable types: 35 continuous, 18 integer (18 binary)

Root relaxation: objective 5.281733e+03, 21 iterations, 0.00 seconds

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

     0     0 5281.73269    0    1          - 5281.73269     -      -    0s
H    0     0                    5296.3125573 5281.73269  0.28%     -    0s
     0     0     cutoff    0      5296.31256 5296.31256   0.0%     -    0s

Cutting planes:
  Implied bound: 1
  Flow cover: 2

Explored 0 nodes (29 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.296312557325e+03, best bound 5.296312557325e+03, gap 0.0%