Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:56:39 2013

Optimize a model with 7806 rows, 1296 columns and 23976 nonzeros
Presolve removed 1073 rows and 660 columns
Presolve time: 0.05s
Presolved: 6733 rows, 636 columns, 20824 nonzeros
Variable types: 19 continuous, 617 integer (617 binary)
Found heuristic solution: objective 25225.000000

Root relaxation: objective 1.810431e+04, 3408 iterations, 0.10 seconds

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

     0     0 18104.3125    0   10 25225.0000 18104.3125  28.2%     -    0s
H    0     0                    18125.000000 18104.3125  0.11%     -    0s
H    0     0                    18122.000000 18104.3125  0.10%     -    0s
H    0     0                    18116.000000 18104.3125  0.06%     -    0s
     0     0 18104.3713    0   14 18116.0000 18104.3713  0.06%     -    0s
     0     0 18104.3713    0    8 18116.0000 18104.3713  0.06%     -    0s
H    0     0                    18110.000000 18104.3713  0.03%     -    0s
     0     0 18105.0980    0   22 18110.0000 18105.0980  0.03%     -    0s
     0     1 18105.2137    0   22 18110.0000 18105.2137  0.03%     -    0s

Cutting planes:
  Gomory: 6
  Cover: 1
  MIR: 13
  Zero half: 5

Explored 21 nodes (3845 simplex iterations) in 0.30 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.811000000000e+04, best bound 1.811000000000e+04, gap 0.0%