Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:36 2013

Optimize a model with 3094 rows, 2924 columns and 11594 nonzeros
Presolve removed 17 rows and 0 columns
Presolve time: 0.01s
Presolved: 3077 rows, 2924 columns, 11577 nonzeros
Variable types: 2907 continuous, 17 integer (17 binary)

Root relaxation: objective 1.771201e+04, 457 iterations, 0.02 seconds

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

     0     0 17712.0070    0   13          - 17712.0070     -      -    0s
H    0     0                    18281.000000 17712.0070  3.11%     -    0s
*    0     0               0    18078.000000 18078.0000   0.0%     -    0s

Cutting planes:
  Gomory: 10
  Implied bound: 12

Explored 0 nodes (541 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.807800000000e+04, best bound 1.807800000000e+04, gap 0.0%