Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:25 2013

Optimize a model with 570 rows, 1760 columns and 4505 nonzeros
Presolve removed 10 rows and 15 columns
Presolve time: 0.05s
Presolved: 560 rows, 1745 columns, 3490 nonzeros
Variable types: 1250 continuous, 495 integer (495 binary)

Root relaxation: objective 1.291780e+04, 56 iterations, 0.00 seconds

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

     0     0 12917.7960    0    1          - 12917.7960     -      -    0s
     0     0 12918.7081    0    2          - 12918.7081     -      -    0s
     0     0 12918.7081    0    2          - 12918.7081     -      -    0s
H    0     0                    13114.898855 12918.7081  1.50%     -    0s
     0     2 12922.6996    0    2 13114.8989 12922.6996  1.47%     -    0s
*   12     3              12    12965.577381 12965.5774   0.0%   1.7    0s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 13 nodes (185 simplex iterations) in 0.15 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.296557738136e+04, best bound 1.296557738136e+04, gap 0.0%