Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:10:54 2013

Optimize a model with 662 rows, 7345 columns and 317499 nonzeros
Presolve removed 3 rows and 3 columns
Presolve time: 1.09s
Presolved: 659 rows, 7342 columns, 317283 nonzeros
Variable types: 0 continuous, 7342 integer (7342 binary)
Found heuristic solution: objective 5074.0000000
Found heuristic solution: objective 3838.0000000

Root relaxation: objective 2.901250e+03, 1524 iterations, 0.26 seconds

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

     0     0 2901.25000    0   39 3838.00000 2901.25000  24.4%     -    1s
     0     0 2907.50000    0   24 3838.00000 2907.50000  24.2%     -    1s
H    0     0                    3043.0000000 2907.50000  4.45%     -    1s
     0     0 2918.00000    0   62 3043.00000 2918.00000  4.11%     -    2s
H    0     0                    3026.0000000 2918.00000  3.57%     -    3s
     0     0 2918.00000    0   60 3026.00000 2918.00000  3.57%     -    4s
H    0     0                    2979.0000000 2918.00000  2.05%     -    4s
     0     0 2921.00000    0   38 2979.00000 2921.00000  1.95%     -    4s
     0     2 2921.00000    0   38 2979.00000 2921.00000  1.95%     -    5s
H    1     1                    2954.0000000 2921.00000  1.12%   191    8s
*    4     3              13    2921.0000000 2921.00000   0.0%  47.8    8s

Cutting planes:
  Gomory: 2
  Clique: 6
  Zero half: 5

Explored 4 nodes (6728 simplex iterations) in 8.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.921000000000e+03, best bound 2.921000000000e+03, gap 0.0%