Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:27:16 2013

Optimize a model with 2570 rows, 7760 columns and 20505 nonzeros
Presolve removed 10 rows and 15 columns
Presolve time: 0.21s
Presolved: 2560 rows, 7745 columns, 15490 nonzeros
Variable types: 5250 continuous, 2495 integer (2495 binary)

Root relaxation: objective 1.309958e+04, 50 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 13099.6912    0    2          - 13099.6912     -      -    0s
     0     0 13099.6912    0    2          - 13099.6912     -      -    0s
H    0     0                    13130.104136 13099.6912  0.23%     -    0s
     0     1 13104.6591    0    2 13130.1041 13104.6591  0.19%     -    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 21 nodes (596 simplex iterations) in 0.69 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.313010413557e+04, best bound 1.312957459893e+04, gap 0.0040%