Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:28 2013

Optimize a model with 2430 rows, 2280 columns and 9030 nonzeros
Presolve removed 15 rows and 0 columns
Presolve time: 0.01s
Presolved: 2415 rows, 2280 columns, 9015 nonzeros
Variable types: 2265 continuous, 15 integer (15 binary)

Root relaxation: objective 1.800995e+04, 396 iterations, 0.01 seconds

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

     0     0 18009.9501    0    9          - 18009.9501     -      -    0s
H    0     0                    18496.000000 18009.9501  2.63%     -    0s
*    0     0               0    18471.000000 18471.0000   0.0%     -    0s

Cutting planes:
  Gomory: 7
  Implied bound: 9

Explored 0 nodes (484 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.847100000000e+04, best bound 1.847100000000e+04, gap 0.0%