Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:52:03 2013

Optimize a model with 5082 rows, 4862 columns and 19382 nonzeros
Presolve removed 323 rows and 0 columns
Presolve time: 0.03s
Presolved: 4759 rows, 4862 columns, 18736 nonzeros
Variable types: 4840 continuous, 22 integer (22 binary)

Root relaxation: objective 1.946933e+04, 421 iterations, 0.01 seconds

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

     0     0 19469.3333    0    2          - 19469.3333     -      -    0s
H    0     0                    19630.000000 19469.3333  0.82%     -    0s
     0     0 19474.0145    0    3 19630.0000 19474.0145  0.79%     -    0s
H    0     0                    19487.000000 19474.0145  0.07%     -    0s
     0     0 19474.0363    0    3 19487.0000 19474.0363  0.07%     -    0s
     0     0 19477.0000    0    1 19487.0000 19477.0000  0.05%     -    0s
*    0     0               0    19478.000000 19478.0000   0.0%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 0 nodes (455 simplex iterations) in 0.13 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.947800000000e+04, best bound 1.947800000000e+04, gap 0.0%