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 1.309958e+04, 220 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    1          - 13099.5797     -      -    0s
     0     0 13129.9965    0    2          - 13129.9965     -      -    0s
H    0     0                    13130.088346 13129.9965  0.00%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 0 nodes (248 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.313008834595e+04, best bound 1.312999648696e+04, gap 0.0007%