Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:15:43 2013

Optimize a model with 240 rows, 1320 columns and 2810 nonzeros
Presolve removed 20 rows and 30 columns
Presolve time: 0.00s
Presolved: 220 rows, 1290 columns, 2580 nonzeros
Variable types: 1200 continuous, 90 integer (90 binary)

Root relaxation: objective 1.937272e+04, 115 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    2          - 19372.7157     -      -    0s
     0     0 19392.8333    0    4          - 19392.8333     -      -    0s
     0     0 19395.6915    0    4          - 19395.6915     -      -    0s
     0     0 19396.8321    0    4          - 19396.8321     -      -    0s
     0     0 19396.8321    0    4          - 19396.8321     -      -    0s
H    0     0                    19595.690215 19396.8321  1.01%     -    0s
     0     2 19406.0008    0    4 19595.6902 19406.0008  0.97%     -    0s
*    6     6               4    19517.941698 19455.3863  0.32%   3.7    0s
*    8     1               4    19512.982017 19455.3863  0.30%   3.2    0s

Cutting planes:
  Gomory: 2
  Flow cover: 4

Explored 13 nodes (219 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 1.951145707606e+04, gap 0.0078%