Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:27:20 2013

Optimize a model with 2047 rows, 529 columns and 6348 nonzeros
Presolve removed 564 rows and 281 columns
Presolve time: 0.02s
Presolved: 1483 rows, 248 columns, 4669 nonzeros
Variable types: 11 continuous, 237 integer (237 binary)
Found heuristic solution: objective 11375.000000

Root relaxation: objective 8.344774e+03, 1019 iterations, 0.02 seconds

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

     0     0 8344.77419    0    6 11375.0000 8344.77419  26.6%     -    0s
H    0     0                    8372.0000000 8344.77419  0.33%     -    0s
H    0     0                    8367.0000000 8344.77419  0.27%     -    0s
H    0     0                    8358.0000000 8344.77419  0.16%     -    0s
     0     0 8347.46191    0   20 8358.00000 8347.46191  0.13%     -    0s
     0     0 8347.46191    0    7 8358.00000 8347.46191  0.13%     -    0s
     0     0 8347.84444    0   23 8358.00000 8347.84444  0.12%     -    0s
     0     1 8347.85188    0   23 8358.00000 8347.85188  0.12%     -    0s
H    6     5                    8357.0000000 8350.95129  0.07%   0.0    0s

Cutting planes:
  Gomory: 7
  Cover: 1
  Implied bound: 1
  MIR: 5
  GUB cover: 2
  Zero half: 10

Explored 24 nodes (1399 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.357000000000e+03, best bound 8.357000000000e+03, gap 0.0%