Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:28:17 2013

Optimize a model with 160 rows, 2810 columns and 28155 nonzeros
Presolve removed 5 rows and 5 columns
Presolve time: 0.06s
Presolved: 155 rows, 2805 columns, 25650 nonzeros
Variable types: 2760 continuous, 45 integer (45 binary)

Root relaxation: objective 1.309958e+04, 64 iterations, 0.00 seconds

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

     0     0 13099.5797    0    3          - 13099.5797     -      -    0s
     0     0 13099.6371    0    3          - 13099.6371     -      -    0s
     0     0 13125.3604    0    3          - 13125.3604     -      -    0s
     0     0 13128.4413    0    3          - 13128.4413     -      -    0s
     0     0 13129.6269    0    3          - 13129.6269     -      -    0s
     0     0 13129.6269    0    3          - 13129.6269     -      -    0s
H    0     0                    13291.636301 13129.6269  1.22%     -    0s
H    0     0                    13284.315875 13129.6269  1.16%     -    0s
     0     0 13129.6269    0    3 13284.3159 13129.6269  1.16%     -    0s
     0     0 13129.6305    0    3 13284.3159 13129.6305  1.16%     -    0s
     0     0 13129.6317    0    3 13284.3159 13129.6317  1.16%     -    0s
     0     0 13129.6317    0    3 13284.3159 13129.6317  1.16%     -    0s
     0     2 13129.6317    0    3 13284.3159 13129.6317  1.16%     -    0s
*   15     5              14    13140.944379 13129.6317  0.09%   4.4    0s
*   20     1               6    13130.104136 13130.1041   0.0%   3.9    0s

Cutting planes:
  Flow cover: 1

Explored 21 nodes (373 simplex iterations) in 0.48 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.313010413557e+04, best bound 1.313010413557e+04, gap 0.0%