Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:17 2013

Optimize a model with 228 rows, 644 columns and 1682 nonzeros
Presolve removed 218 rows and 616 columns
Presolve time: 0.01s
Presolved: 10 rows, 28 columns, 56 nonzeros
Variable types: 24 continuous, 4 integer (4 binary)

Root relaxation: objective 7.659086e+03, 5 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                    7666.4565747 7659.08578  0.10%     -    0s
H    0     0                    7664.6434662 7659.08578  0.07%     -    0s
     0     0     cutoff    0      7664.64347 7664.64347   0.0%     -    0s

Cutting planes:
  Cover: 1

Explored 0 nodes (6 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.664643466185e+03, best bound 7.664643466185e+03, gap 0.0%