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 810 rows and 816 columns
Presolve time: 0.01s
Presolved: 18 rows, 28 columns, 77 nonzeros
Variable types: 21 continuous, 7 integer (7 binary)

Root relaxation: objective 7.659086e+03, 10 iterations, 0.00 seconds

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

     0     0 7659.08578    0    1          - 7659.08578     -      -    0s
H    0     0                    7664.6447497 7659.08578  0.07%     -    0s
     0     0     cutoff    0      7664.64475 7664.64475   0.0%     -    0s

Cutting planes:
  Implied bound: 1
  Flow cover: 2

Explored 0 nodes (12 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.664644749744e+03, best bound 7.664644749744e+03, gap 0.0%