Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:07 2012

Optimize a model with 255 rows, 95 columns and 510 nonzeros
Presolve removed 79 rows and 13 columns
Presolve time: 0.00s
Presolved: 176 rows, 82 columns, 370 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.350000e+01, 119 iterations, 0.00 seconds

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

     0     0   43.50000    0   65   38.00000   43.50000  14.5%     -    0s
     0     0   42.50000    0   77   38.00000   42.50000  11.8%     -    0s
     0     0   42.00000    0   75   38.00000   42.00000  10.5%     -    0s
H    0     0                      39.0000000   42.00000  7.69%     -    0s
H    0     0                      40.0000000   42.00000  5.00%     -    0s
*    0     0               0      41.0000000   41.00000   0.0%     -    0s

Cutting planes:
  Zero half: 77

Explored 0 nodes (267 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%