Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:40:24 2013

Optimize a model with 570 rows, 760 columns and 2505 nonzeros
Presolve removed 15 rows and 10 columns
Presolve time: 0.02s
Presolved: 555 rows, 750 columns, 1990 nonzeros
Variable types: 505 continuous, 245 integer (245 binary)

Root relaxation: objective 1.204447e+04, 217 iterations, 0.00 seconds

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

     0     0 12044.4669    0    1          - 12044.4669     -      -    0s
     0     0 12097.6819    0    2          - 12097.6819     -      -    0s
H    0     0                    12097.761925 12097.6819  0.00%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 0 nodes (260 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.209776192494e+04, best bound 1.209768188701e+04, gap 0.0007%