Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:27:10 2013

Optimize a model with 2570 rows, 7760 columns and 20505 nonzeros
Presolve removed 10 rows and 15 columns
Presolve time: 0.20s
Presolved: 2560 rows, 7745 columns, 15490 nonzeros
Variable types: 5250 continuous, 2495 integer (2495 binary)

Root relaxation: objective 1.291780e+04, 55 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 12917.9809    0    2          - 12917.9809     -      -    0s
     0     0 12917.9809    0    2          - 12917.9809     -      -    0s
     0     2 12918.0779    0    2          - 12918.0779     -      -    0s
*  538   313             535    13146.827602 12965.5786  1.38%   1.9    2s
*  540   307             534    13146.766309 12965.5786  1.38%   1.9    2s
*  541   306             533    13146.703768 12965.5786  1.38%   1.9    2s
*  542   305             532    13146.639984 12965.5786  1.38%   1.9    2s
*  544   304             531    13146.574968 12965.5786  1.38%   1.9    2s
*  545     0              49    12965.578650 12965.5786   0.0%   1.9    2s

Cutting planes:
  Gomory: 1
  Flow cover: 1

Explored 546 nodes (1582 simplex iterations) in 2.66 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.296557864978e+04, best bound 1.296557864978e+04, gap 0.0%