Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:53:17 2013

Optimize a model with 8176 rows, 7896 columns and 31416 nonzeros
Presolve removed 28 rows and 0 columns
Presolve time: 0.04s
Presolved: 8148 rows, 7896 columns, 31388 nonzeros
Variable types: 7868 continuous, 28 integer (28 binary)

Root relaxation: objective 3.093830e+04, 1347 iterations, 0.11 seconds

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

     0     0 30938.3009    0   23          - 30938.3009     -      -    0s
H    0     0                    33883.000000 30938.3009  8.69%     -    0s
*    0     0               0    33151.000000 33151.0000   0.0%     -    0s

Cutting planes:
  Gomory: 19
  Implied bound: 22

Explored 0 nodes (1696 simplex iterations) in 0.35 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.315100000000e+04, best bound 3.315100000000e+04, gap 0.0%