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

Optimize a model with 289 rows, 102 columns and 578 nonzeros
Presolve removed 44 rows and 2 columns
Presolve time: 0.00s
Presolved: 245 rows, 100 columns, 517 nonzeros
Variable types: 0 continuous, 100 integer (100 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.550000e+01, 148 iterations, 0.00 seconds

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

     0     0   45.50000    0   87   36.00000   45.50000  26.4%     -    0s
H    0     0                      37.0000000   45.50000  23.0%     -    0s
     0     0   44.55556    0   98   37.00000   44.55556  20.4%     -    0s
H    0     0                      39.0000000   44.55556  14.2%     -    0s
     0     0   43.30000    0   96   39.00000   43.30000  11.0%     -    0s
     0     0   42.66667    0   98   39.00000   42.66667  9.40%     -    0s
     0     0   42.50000    0   95   39.00000   42.50000  8.97%     -    0s
     0     0   42.48148    0   98   39.00000   42.48148  8.93%     -    0s
     0     0   42.48148    0   97   39.00000   42.48148  8.93%     -    0s
H    0     0                      40.0000000   42.48148  6.20%     -    0s
     0     2   42.39130    0   89   40.00000   42.39130  5.98%     -    0s
*    4     4               3      41.0000000   42.00000  2.44%  26.8    0s

Cutting planes:
  Gomory: 1
  Zero half: 22

Explored 13 nodes (851 simplex iterations) in 0.05 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%