Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:51:57 2013

Optimize a model with 4641 rows, 4431 columns and 17661 nonzeros
Presolve removed 183 rows and 0 columns
Presolve time: 0.03s
Presolved: 4458 rows, 4431 columns, 17295 nonzeros
Variable types: 4410 continuous, 21 integer (21 binary)

Root relaxation: objective 1.938545e+04, 310 iterations, 0.01 seconds

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

     0     0 19385.4461    0    2          - 19385.4461     -      -    0s
H    0     0                    19523.000000 19385.4461  0.70%     -    0s
H    0     0                    19395.000000 19385.4461  0.05%     -    0s
     0     0     cutoff    0      19395.0000 19395.0000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 0 nodes (314 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.939500000000e+04, best bound 1.939500000000e+04, gap 0.0%