Gurobi 5.0.1 (linux64) logging started Sat Dec  8 02:35:16 2012

Optimize a model with 825 rows, 810 columns and 2959 nonzeros
Presolve removed 70 rows and 22 columns
Presolve time: 0.00s
Presolved: 755 rows, 788 columns, 2807 nonzeros
Variable types: 701 continuous, 87 integer (87 binary)

Root relaxation: objective 2.853852e+04, 131 iterations, 0.00 seconds

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

     0     0 28538.5169    0    4          - 28538.5169     -      -    0s
H    0     0                    28862.000000 28538.5169  1.12%     -    0s
     0     0 28576.0289    0    6 28862.0000 28576.0289  0.99%     -    0s
H    0     0                    28597.000000 28576.0289  0.07%     -    0s
     0     0 28577.4653    0    4 28597.0000 28577.4653  0.07%     -    0s
     0     0 28577.4653    0    4 28597.0000 28577.4653  0.07%     -    0s
     0     0 28589.0825    0    2 28597.0000 28589.0825  0.03%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 3

Explored 0 nodes (215 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.859700000000e+04, best bound 2.859700000000e+04, gap 0.0%