Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:32 2013

Optimize a model with 580 rows, 1265 columns and 4025 nonzeros
Presolve removed 5 rows and 5 columns
Presolve time: 0.05s
Presolved: 575 rows, 1260 columns, 3520 nonzeros
Variable types: 760 continuous, 500 integer (500 binary)

Root relaxation: objective 1.291780e+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 12917.7960    0    2          - 12917.7960     -      -    0s
     0     0 12927.0765    0    2          - 12927.0765     -      -    0s
     0     0 12930.2840    0    2          - 12930.2840     -      -    0s
     0     0 12932.5915    0    2          - 12932.5915     -      -    0s
     0     0 12933.4351    0    4          - 12933.4351     -      -    0s
     0     0 12934.4419    0    2          - 12934.4419     -      -    0s
     0     0 12934.7454    0    6          - 12934.7454     -      -    0s
     0     0 12934.8988    0    2          - 12934.8988     -      -    0s
     0     0 12935.1244    0    6          - 12935.1244     -      -    0s
     0     0 12936.0049    0    2          - 12936.0049     -      -    0s
     0     0 12936.0049    0    2          - 12936.0049     -      -    0s
     0     2 12936.0049    0    2          - 12936.0049     -      -    0s
*   24     6              19    12965.577381 12965.5774   0.0%   5.5    0s

Cutting planes:
  Gomory: 1
  Implied bound: 18
  Flow cover: 2

Explored 25 nodes (259 simplex iterations) in 0.22 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%