Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:26:41 2013

Optimize a model with 64 rows, 1064 columns and 11142 nonzeros
Presolve removed 22 rows and 33 columns
Presolve time: 0.03s
Presolved: 42 rows, 1031 columns, 10078 nonzeros
Variable types: 1013 continuous, 18 integer (18 binary)

Root relaxation: objective 5.420106e+03, 12 iterations, 0.00 seconds

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

     0     0 5420.10604    0    3          - 5420.10604     -      -    0s
     0     0 5421.90025    0    3          - 5421.90025     -      -    0s
     0     0 5438.34531    0    3          - 5438.34531     -      -    0s
     0     0 5438.34531    0    3          - 5438.34531     -      -    0s
     0     0 5438.34531    0    3          - 5438.34531     -      -    0s
     0     0 5438.36999    0    3          - 5438.36999     -      -    0s
     0     0 5440.52720    0    3          - 5440.52720     -      -    0s
     0     0 5441.36427    0    3          - 5441.36427     -      -    0s
     0     0 5441.36427    0    3          - 5441.36427     -      -    0s
H    0     0                    5483.4883102 5441.36427  0.77%     -    0s
     0     2 5441.36427    0    3 5483.48831 5441.36427  0.77%     -    0s
*    9     4               9    5445.2742443 5441.36427  0.07%   4.3    0s
*   24     9              11    5442.4757772 5441.61765  0.02%   3.4    0s
*   27     0               5    5441.6178882 5441.61789   0.0%   3.1    0s

Cutting planes:
  Flow cover: 1

Explored 28 nodes (172 simplex iterations) in 0.38 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.441617888152e+03, best bound 5.441617888152e+03, gap 0.0%