Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:10 2012

Optimize a model with 297 rows, 103 columns and 594 nonzeros
Presolve removed 70 rows and 6 columns
Presolve time: 0.00s
Presolved: 227 rows, 97 columns, 475 nonzeros
Variable types: 0 continuous, 97 integer (97 binary)
Found heuristic solution: objective 35.0000000

Root relaxation: objective 4.510000e+01, 146 iterations, 0.00 seconds

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

     0     0   45.10000    0   91   35.00000   45.10000  28.9%     -    0s
H    0     0                      39.0000000   45.10000  15.6%     -    0s
     0     0   44.50000    0   79   39.00000   44.50000  14.1%     -    0s
     0     0   44.33333    0   85   39.00000   44.33333  13.7%     -    0s
H    0     0                      40.0000000   44.33333  10.8%     -    0s
     0     0   44.07143    0   95   40.00000   44.07143  10.2%     -    0s
     0     0   43.50000    0   96   40.00000   43.50000  8.75%     -    0s
     0     0   43.25610    0   96   40.00000   43.25610  8.14%     -    0s
     0     0   43.04054    0   96   40.00000   43.04054  7.60%     -    0s
     0     0   42.78182    0   88   40.00000   42.78182  6.95%     -    0s
     0     0   42.60000    0   88   40.00000   42.60000  6.50%     -    0s
     0     0   42.59048    0   95   40.00000   42.59048  6.48%     -    0s
     0     0   42.59048    0   90   40.00000   42.59048  6.48%     -    0s
     0     2   42.58000    0   90   40.00000   42.58000  6.45%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 55

Explored 41 nodes (1340 simplex iterations) in 0.07 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%