Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:08 2012

Optimize a model with 266 rows, 97 columns and 532 nonzeros
Presolve removed 62 rows and 8 columns
Presolve time: 0.00s
Presolved: 204 rows, 89 columns, 432 nonzeros
Variable types: 0 continuous, 89 integer (89 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.300000e+01, 142 iterations, 0.00 seconds

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

     0     0   43.00000    0   71   39.00000   43.00000  10.3%     -    0s
H    0     0                      40.0000000   43.00000  7.50%     -    0s
     0     0   42.32258    0   84   40.00000   42.32258  5.81%     -    0s
     0     0   41.66667    0   67   40.00000   41.66667  4.17%     -    0s
H    0     0                      41.0000000   41.66667  1.63%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 17

Explored 0 nodes (289 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.100000000000e+01, best bound 4.100000000000e+01, gap 0.0%