Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:41 2013

Optimize a model with 260 rows, 2360 columns and 11130 nonzeros
Presolve removed 10 rows and 290 columns
Presolve time: 0.01s
Presolved: 250 rows, 2070 columns, 10130 nonzeros
Variable types: 2010 continuous, 60 integer (60 binary)

Root relaxation: objective 1.937272e+04, 120 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    6          - 19372.7157     -      -    0s
     0     0 19374.9817    0   12          - 19374.9817     -      -    0s
     0     0 19441.8065    0    8          - 19441.8065     -      -    0s
     0     0 19441.8065    0    8          - 19441.8065     -      -    0s
H    0     0                    19689.539247 19441.8065  1.26%     -    0s
     0     2 19476.1457    0    8 19689.5392 19476.1457  1.08%     -    0s
*   15    11              15    19516.588704 19482.1895  0.18%   5.5    0s
*   25     4               9    19515.429393 19511.7202  0.02%   4.2    0s
H   27     2                    19515.017213 19511.7202  0.02%   3.9    0s
*   32     5              12    19513.720614 19511.7405  0.01%   3.5    0s

Cutting planes:
  Gomory: 2
  Flow cover: 1

Explored 37 nodes (413 simplex iterations) in 0.14 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.951372061361e+04, best bound 1.951291592602e+04, gap 0.0041%