Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:29:24 2013

Optimize a model with 10140 rows, 11020 columns and 42010 nonzeros
Presolve removed 30 rows and 20 columns
Presolve time: 0.22s
Presolved: 10110 rows, 11000 columns, 31980 nonzeros
Variable types: 6010 continuous, 4990 integer (4990 binary)

Root relaxation: objective 2.337984e+04, 3727 iterations, 0.11 seconds

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

     0     0 23379.8401    0    1          - 23379.8401     -      -    0s
     0     0 23518.9230    0    4          - 23518.9230     -      -    0s
     0     0 23526.1777    0    3          - 23526.1777     -      -    0s
H    0     0                    23544.446367 23526.1777  0.08%     -    0s
     0     0 23526.1777    0    3 23544.4464 23526.1777  0.08%     -    0s
     0     0 23526.1777    0    1 23544.4464 23526.1777  0.08%     -    0s
     0     0 23526.1777    0    4 23544.4464 23526.1777  0.08%     -    0s
H    0     0                    23539.836875 23526.1777  0.06%     -    0s
     0     0 23526.1777    0    3 23539.8369 23526.1777  0.06%     -    0s
     0     0 23526.3535    0    3 23539.8369 23526.3535  0.06%     -    0s
     0     2 23526.8281    0    3 23539.8369 23526.8281  0.06%     -    0s
*    4     3               4    23527.308995 23527.3053  0.00%  25.2    0s

Cutting planes:
  Gomory: 1
  Flow cover: 6

Explored 5 nodes (4756 simplex iterations) in 0.79 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.352730899529e+04, best bound 2.352730525245e+04, gap 0.0000%