Gurobi 5.0.1 (linux64) logging started Mon Feb  4 18:51:25 2013

Optimize a model with 10700 rows, 1600 columns and 32800 nonzeros
Presolve removed 983 rows and 801 columns
Presolve time: 0.07s
Presolved: 9717 rows, 799 columns, 30038 nonzeros
Variable types: 24 continuous, 775 integer (775 binary)
Found heuristic solution: objective 30937.000000
Found heuristic solution: objective 28811.000000

Root relaxation: objective 2.032200e+04, 8092 iterations, 0.35 seconds

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

     0     0 20322.0000    0   10 28811.0000 20322.0000  29.5%     -    0s
H    0     0                    20342.000000 20322.0000  0.10%     -    0s
H    0     0                    20336.000000 20322.0000  0.07%     -    0s
     0     0 20322.0000    0   21 20336.0000 20322.0000  0.07%     -    0s
     0     0 20322.0000    0   11 20336.0000 20322.0000  0.07%     -    0s
     0     0 20322.0000    0   23 20336.0000 20322.0000  0.07%     -    0s
H    0     0                    20331.000000 20322.0000  0.04%     -    0s
H    0     0                    20329.000000 20322.0000  0.03%     -    0s
     0     2 20322.0000    0   23 20329.0000 20322.0000  0.03%     -    0s
H   69    37                    20328.000000 20324.1851  0.02%  36.6    1s
H  125    18                    20326.000000 20324.2008  0.01%  24.6    1s

Cutting planes:
  Gomory: 6
  Cover: 3
  MIR: 26
  Zero half: 6

Explored 125 nodes (13911 simplex iterations) in 1.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.032600000000e+04, best bound 2.032500000000e+04, gap 0.0049%