Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:30:44 2013

Optimize a model with 2324 rows, 576 columns and 7200 nonzeros
Presolve removed 615 rows and 308 columns
Presolve time: 0.02s
Presolved: 1709 rows, 268 columns, 5295 nonzeros
Variable types: 8 continuous, 260 integer (260 binary)
Found heuristic solution: objective 10921.000000

Root relaxation: objective 8.526204e+03, 766 iterations, 0.02 seconds

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

     0     0 8526.20445    0    8 10921.0000 8526.20445  21.9%     -    0s
H    0     0                    8539.0000000 8526.20445  0.15%     -    0s
H    0     0                    8532.0000000 8526.20445  0.07%     -    0s
     0     0 8526.88904    0   18 8532.00000 8526.88904  0.06%     -    0s
     0     0 8526.88904    0    6 8532.00000 8526.88904  0.06%     -    0s
H    0     0                    8531.0000000 8526.88904  0.05%     -    0s
     0     0 8527.06415    0   17 8531.00000 8527.06415  0.05%     -    0s
     0     1 8528.13239    0   17 8531.00000 8528.13239  0.03%     -    0s

Cutting planes:
  Gomory: 2
  Cover: 2
  Implied bound: 1
  Clique: 2
  MIR: 6
  Zero half: 1

Explored 4 nodes (910 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.531000000000e+03, best bound 8.531000000000e+03, gap 0.0%