Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:37:54 2012

Optimize a model with 69 rows, 56 columns and 226 nonzeros
Presolve time: 0.00s
Presolved: 69 rows, 56 columns, 226 nonzeros
Variable types: 0 continuous, 56 integer (56 binary)
Found heuristic solution: objective 23.0000000
Found heuristic solution: objective 21.0000000

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   22   21.00000    0.00000   100%     -    0s
H    0     0                      13.0000000    0.00000   100%     -    0s
H    0     0                      12.0000000    0.00000   100%     -    0s
     0     0    0.54825    0   27   12.00000    0.54825  95.4%     -    0s
     0     0    0.63636    0   25   12.00000    0.63636  94.7%     -    0s
H    0     0                       9.0000000    0.63636  92.9%     -    0s
     0     0    0.74126    0   26    9.00000    0.74126  91.8%     -    0s
     0     0    0.75000    0   26    9.00000    0.75000  91.7%     -    0s
H    0     0                       7.0000000    0.75000  89.3%     -    0s
     0     2    0.78187    0   26    7.00000    0.78187  88.8%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 4

Explored 37 nodes (496 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 7.000000000000e+00, best bound 7.000000000000e+00, gap 0.0%