Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:44 2013

Optimize a model with 220 rows, 1380 columns and 3490 nonzeros
Presolve removed 10 rows and 130 columns
Presolve time: 0.00s
Presolved: 210 rows, 1250 columns, 3290 nonzeros
Variable types: 1210 continuous, 40 integer (40 binary)

Root relaxation: objective 1.937272e+04, 110 iterations, 0.00 seconds

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

     0     0 19372.7157    0    4          - 19372.7157     -      -    0s
     0     0 19386.2985    0    8          - 19386.2985     -      -    0s
     0     0 19389.4862    0    8          - 19389.4862     -      -    0s
     0     0 19391.7358    0    8          - 19391.7358     -      -    0s
     0     0 19453.6417    0    5          - 19453.6417     -      -    0s
     0     0 19453.6417    0    5          - 19453.6417     -      -    0s
H    0     0                    19595.690215 19453.6417  0.72%     -    0s
     0     2 19455.0844    0    5 19595.6902 19455.0844  0.72%     -    0s
*    4     4               3    19512.982017 19455.0844  0.30%  12.0    0s

Cutting planes:
  Gomory: 2
  Flow cover: 1

Explored 12 nodes (289 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.951298201724e+04, best bound 1.951298201724e+04, gap 0.0%