Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:33 2012

Optimize a model with 91 rows, 75 columns and 300 nonzeros
Presolve time: 0.00s
Presolved: 91 rows, 75 columns, 300 nonzeros
Variable types: 0 continuous, 75 integer (75 binary)
Found heuristic solution: objective 23.0000000

Root relaxation: objective 0.000000e+00, 42 iterations, 0.00 seconds

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

     0     0    0.00000    0   27   23.00000    0.00000   100%     -    0s
H    0     0                      13.0000000    0.00000   100%     -    0s
     0     0    0.43769    0   30   13.00000    0.43769  96.6%     -    0s
H    0     0                      10.0000000    0.43769  95.6%     -    0s
     0     0    0.87758    0   36   10.00000    0.87758  91.2%     -    0s
     0     0    0.87778    0   34   10.00000    0.87778  91.2%     -    0s
     0     0    0.87778    0   34   10.00000    0.87778  91.2%     -    0s
     0     2    0.88131    0   34   10.00000    0.88131  91.2%     -    0s
*   15     9              11       9.0000000    2.81818  68.7%  12.3    0s
*   26     7               7       8.0000000    3.13416  60.8%  11.5    0s

Cutting planes:
  Gomory: 4
  Mod-K: 2

Explored 65 nodes (737 simplex iterations) in 0.04 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%