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

Optimize a model with 269 rows, 98 columns and 538 nonzeros
Presolve removed 78 rows and 9 columns
Presolve time: 0.00s
Presolved: 191 rows, 89 columns, 407 nonzeros
Variable types: 0 continuous, 89 integer (89 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.387500e+01, 155 iterations, 0.00 seconds

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

     0     0   43.87500    0   86   38.00000   43.87500  15.5%     -    0s
H    0     0                      39.0000000   43.87500  12.5%     -    0s
     0     0   43.00000    0   85   39.00000   43.00000  10.3%     -    0s
     0     0   43.00000    0   58   39.00000   43.00000  10.3%     -    0s
H    0     0                      40.0000000   43.00000  7.50%     -    0s
     0     0   42.77778    0   82   40.00000   42.77778  6.94%     -    0s
H    0     0                      41.0000000   42.77778  4.34%     -    0s
     0     0   42.57143    0   84   41.00000   42.57143  3.83%     -    0s
     0     0   42.45455    0   87   41.00000   42.45455  3.55%     -    0s
     0     0   42.30714    0   88   41.00000   42.30714  3.19%     -    0s
     0     0   42.29126    0   88   41.00000   42.29126  3.15%     -    0s
     0     0   42.29126    0   85   41.00000   42.29126  3.15%     -    0s
     0     2   42.29126    0   85   41.00000   42.29126  3.15%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 19

Explored 10 nodes (481 simplex iterations) in 0.04 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%