Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:23:06 2013

Optimize a model with 1029 rows, 19447 columns and 859105 nonzeros
Presolve removed 46 rows and 280 columns (presolve time = 5s) ...
Presolve removed 46 rows and 280 columns
Presolve time: 6.42s
Presolved: 983 rows, 19167 columns, 845881 nonzeros
Variable types: 0 continuous, 19167 integer (19167 binary)
Found heuristic solution: objective 10211.000000

Root relaxation: objective 6.781000e+03, 4566 iterations, 1.65 seconds

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

     0     0 6781.00000    0   40 10211.0000 6781.00000  33.6%     -    8s
H    0     0                    8358.0000000 6781.00000  18.9%     -    9s
H    0     0                    7599.0000000 6781.00000  10.8%     -    9s
*    0     0               0    6790.0000000 6790.00000   0.0%     -   10s

Cutting planes:
  Clique: 4
  Zero half: 4

Explored 0 nodes (5954 simplex iterations) in 10.18 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 6.790000000000e+03, best bound 6.790000000000e+03, gap 0.0%