Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:25:18 2013

Optimize a model with 1159 rows, 22940 columns and 1092588 nonzeros
Presolve removed 1 rows and 1 columns
Presolve time: 1.07s
Presolved: 1158 rows, 22939 columns, 1092510 nonzeros
Variable types: 0 continuous, 22939 integer (22939 binary)
Found heuristic solution: objective 12284.000000

Root relaxation: objective 8.288500e+03, 4512 iterations, 1.78 seconds

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

     0     0 8288.50000    0   38 12284.0000 8288.50000  32.5%     -    3s
H    0     0                    8822.0000000 8288.50000  6.05%     -    3s
     0     0 8295.35714    0  121 8822.00000 8295.35714  5.97%     -    4s
     0     0 8306.50000    0   71 8822.00000 8306.50000  5.84%     -    7s
H    0     0                    8475.0000000 8306.50000  1.99%     -    7s
*    0     0               0    8308.0000000 8308.00000   0.0%     -    8s

Cutting planes:
  Clique: 16
  Zero half: 18

Explored 0 nodes (5922 simplex iterations) in 8.81 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.308000000000e+03, best bound 8.308000000000e+03, gap 0.0%