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

Optimize a model with 254 rows, 94 columns and 508 nonzeros
Presolve removed 41 rows and 2 columns
Presolve time: 0.00s
Presolved: 213 rows, 92 columns, 445 nonzeros
Variable types: 0 continuous, 92 integer (92 binary)
Found heuristic solution: objective 34.0000000

Root relaxation: objective 4.200000e+01, 132 iterations, 0.00 seconds

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

     0     0   42.00000    0   78   34.00000   42.00000  23.5%     -    0s
H    0     0                      36.0000000   42.00000  16.7%     -    0s
     0     0   41.00000    0   74   36.00000   41.00000  13.9%     -    0s
     0     0   41.00000    0   88   36.00000   41.00000  13.9%     -    0s
     0     0   40.50000    0   84   36.00000   40.50000  12.5%     -    0s
H    0     0                      37.0000000   40.50000  9.46%     -    0s
H    0     0                      39.0000000   40.50000  3.85%     -    0s
     0     0   40.00000    0   87   39.00000   40.00000  2.56%     -    0s
     0     0 infeasible    0        39.00000   39.99996  2.56%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 23

Explored 0 nodes (445 simplex iterations) in 0.02 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.900000000000e+01, best bound 3.900000000000e+01, gap 0.0%