Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:38:27 2012

Optimize a model with 87 rows, 72 columns and 287 nonzeros
Presolve removed 0 rows and 3 columns
Presolve time: 0.00s
Presolved: 87 rows, 69 columns, 284 nonzeros
Variable types: 0 continuous, 69 integer (68 binary)
Found heuristic solution: objective 16.0000000

Root relaxation: objective 0.000000e+00, 38 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   25   16.00000    0.00000   100%     -    0s
H    0     0                      15.0000000    0.00000   100%     -    0s
H    0     0                      11.0000000    0.00000   100%     -    0s
H    0     0                      10.0000000    0.00000   100%     -    0s
     0     0    0.28571    0   27   10.00000    0.28571  97.1%     -    0s
     0     0    0.80851    0   29   10.00000    0.80851  91.9%     -    0s
     0     0    0.80851    0   29   10.00000    0.80851  91.9%     -    0s
     0     2    0.81226    0   29   10.00000    0.81226  91.9%     -    0s
*    7     6               4       9.0000000    2.27052  74.8%  25.1    0s
*   19     5               5       8.0000000    2.48308  69.0%  14.6    0s

Cutting planes:
  Gomory: 3
  Mod-K: 7

Explored 33 nodes (537 simplex iterations) in 0.03 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%