Gurobi 5.0.1 (linux64) logging started Thu Dec 20 12:00:18 2012

Optimize a model with 6722 rows, 6561 columns and 39349 nonzeros
Presolve removed 3303 rows and 3605 columns
Presolve time: 0.10s
Presolved: 3419 rows, 2956 columns, 22834 nonzeros
Variable types: 76 continuous, 2880 integer (2880 binary)

Root relaxation: objective 7.041853e+02, 443 iterations, 0.02 seconds

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

     0     0  704.18529    0   81          -  704.18529     -      -    0s
     0     0  711.75053    0   34          -  711.75053     -      -    0s
     0     0  711.77889    0   32          -  711.77889     -      -    0s
     0     0  712.27889    0   26          -  712.27889     -      -    0s
     0     0  712.66575    0   39          -  712.66575     -      -    0s
     0     0  715.28378    0   47          -  715.28378     -      -    0s
     0     0  715.85389    0   64          -  715.85389     -      -    0s
     0     0  715.87889    0   74          -  715.87889     -      -    0s
     0     0  715.87889    0   47          -  715.87889     -      -    0s
     0     2  716.13966    0   47          -  716.13966     -      -    1s
   604   338  793.57864   44   22          -  734.00000     -   13.0    5s
   610   342  742.00000   21   33          -  734.00000     -   12.8   10s
   616   346  757.82351   33   31          -  734.00000     -   12.7   15s
*  635   329              21     737.0000000  734.00000  0.41%  14.3   15s

Cutting planes:
  Learned: 2
  Gomory: 10
  Cover: 3
  MIR: 7
  GUB cover: 3
  Zero half: 3
  Mod-K: 2

Explored 640 nodes (9811 simplex iterations) in 15.45 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.370000000000e+02, best bound 7.370000000000e+02, gap 0.0%