Gurobi 5.0.1 (linux64) logging started Thu Dec 20 12:35:51 2012

Optimize a model with 6562 rows, 6561 columns and 29353 nonzeros
Presolve removed 6033 rows and 4691 columns
Presolve time: 0.08s
Presolved: 529 rows, 1870 columns, 5404 nonzeros
Variable types: 67 continuous, 1803 integer (1803 binary)

Root relaxation: objective 7.038734e+02, 269 iterations, 0.00 seconds

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

     0     0  703.87341    0   73          -  703.87341     -      -    0s
     0     0  732.00000    0   65          -  732.00000     -      -    0s
     0     0  733.66667    0   75          -  733.66667     -      -    0s
     0     0  736.20000    0   42          -  736.20000     -      -    0s
     0     0  736.45000    0   65          -  736.45000     -      -    0s
     0     0  737.20000    0   48          -  737.20000     -      -    0s
     0     0  739.50000    0   20          -  739.50000     -      -    0s
     0     0  739.50000    0   20          -  739.50000     -      -    0s
     0     2  739.50000    0   20          -  739.50000     -      -    0s
*   10     7               8     753.0000000  739.50000  1.79%   9.4    0s
H   27    12                     749.0000000  742.26923  0.90%   8.9    0s
*   47    12              13     748.0000000  742.61538  0.72%   8.6    0s

Cutting planes:
  Learned: 6
  Gomory: 1
  Cover: 16
  Implied bound: 24
  Clique: 8
  MIR: 5
  GUB cover: 3
  Zero half: 7

Explored 74 nodes (1289 simplex iterations) in 0.40 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.480000000000e+02, best bound 7.480000000000e+02, gap 0.0%