Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:42 2013

Optimize a model with 3456 rows, 3276 columns and 12996 nonzeros
Presolve removed 18 rows and 0 columns
Presolve time: 0.01s
Presolved: 3438 rows, 3276 columns, 12978 nonzeros
Variable types: 3258 continuous, 18 integer (18 binary)

Root relaxation: objective 1.933059e+04, 487 iterations, 0.02 seconds

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

     0     0 19330.5937    0   13          - 19330.5937     -      -    0s
H    0     0                    20239.000000 19330.5937  4.49%     -    0s
*    0     0               0    19958.000000 19958.0000   0.0%     -    0s

Cutting planes:
  Gomory: 9
  Implied bound: 13

Explored 0 nodes (591 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.995800000000e+04, best bound 1.995800000000e+04, gap 0.0%