Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:40:34 2013

Optimize a model with 320 rows, 6120 columns and 57310 nonzeros
Presolve removed 10 rows and 10 columns
Presolve time: 0.10s
Presolved: 310 rows, 6110 columns, 52300 nonzeros
Variable types: 6020 continuous, 90 integer (90 binary)

Root relaxation: objective 2.387367e+04, 254 iterations, 0.01 seconds

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

     0     0 23873.6700    0    3          - 23873.6700     -      -    0s
     0     0 23873.8111    0    3          - 23873.8111     -      -    0s
     0     0 23939.7960    0    3          - 23939.7960     -      -    0s
     0     0 23947.6991    0    3          - 23947.6991     -      -    0s
     0     0 23947.6991    0    3          - 23947.6991     -      -    0s
     0     2 23947.7481    0    3          - 23947.7481     -      -    0s
*   17     7              17    23957.666457 23947.7614  0.04%   6.1    0s
*   36     3               7    23950.729782 23950.7229  0.00%   4.0    1s

Cutting planes:
  Flow cover: 1

Explored 37 nodes (583 simplex iterations) in 1.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.395072978172e+04, best bound 2.395072290582e+04, gap 0.0000%