Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:09 2012

Optimize a model with 268 rows, 98 columns and 536 nonzeros
Presolve removed 48 rows and 6 columns
Presolve time: 0.00s
Presolved: 220 rows, 92 columns, 459 nonzeros
Variable types: 0 continuous, 92 integer (92 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.450000e+01, 124 iterations, 0.00 seconds

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

     0     0   44.50000    0   79   36.00000   44.50000  23.6%     -    0s
     0     0   42.50000    0   75   36.00000   42.50000  18.1%     -    0s
     0     0   42.33333    0   81   36.00000   42.33333  17.6%     -    0s
H    0     0                      37.0000000   42.33333  14.4%     -    0s
     0     0   42.20000    0   87   37.00000   42.20000  14.1%     -    0s
     0     0   41.92308    0   87   37.00000   41.92308  13.3%     -    0s
     0     0   41.29167    0   89   37.00000   41.29167  11.6%     -    0s
     0     0   41.01724    0   84   37.00000   41.01724  10.9%     -    0s
     0     0   40.90991    0   90   37.00000   40.90991  10.6%     -    0s
     0     0   40.85714    0   90   37.00000   40.85714  10.4%     -    0s
     0     0   40.73689    0   88   37.00000   40.73689  10.1%     -    0s
     0     0   40.70793    0   92   37.00000   40.70793  10.0%     -    0s
     0     0   40.70793    0   90   37.00000   40.70793  10.0%     -    0s
H    0     0                      39.0000000   40.70793  4.38%     -    0s
     0     2   40.70331    0   90   39.00000   40.70331  4.37%     -    0s

Cutting planes:
  Zero half: 55

Explored 26 nodes (915 simplex iterations) in 0.05 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%