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

Optimize a model with 283 rows, 101 columns and 566 nonzeros
Presolve removed 74 rows and 8 columns
Presolve time: 0.00s
Presolved: 209 rows, 93 columns, 450 nonzeros
Variable types: 0 continuous, 93 integer (93 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.450000e+01, 136 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   71   38.00000   44.50000  17.1%     -    0s
     0     0   44.00000    0   68   38.00000   44.00000  15.8%     -    0s
     0     0   43.66667    0   89   38.00000   43.66667  14.9%     -    0s
H    0     0                      39.0000000   43.66667  12.0%     -    0s
     0     0   43.60000    0   92   39.00000   43.60000  11.8%     -    0s
H    0     0                      40.0000000   43.60000  9.00%     -    0s
H    0     0                      41.0000000   43.60000  6.34%     -    0s
     0     0   43.40000    0   91   41.00000   43.40000  5.85%     -    0s
     0     0   43.00000    0   91   41.00000   43.00000  4.88%     -    0s
     0     0   42.90000    0   93   41.00000   42.90000  4.63%     -    0s
     0     0   42.83626    0   93   41.00000   42.83626  4.48%     -    0s
     0     0   42.71429    0   93   41.00000   42.71429  4.18%     -    0s
     0     0   42.70000    0   92   41.00000   42.70000  4.15%     -    0s
     0     0   42.68182    0   92   41.00000   42.68182  4.10%     -    0s
     0     0   42.68182    0   88   41.00000   42.68182  4.10%     -    0s
     0     2   42.68182    0   88   41.00000   42.68182  4.10%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 64

Explored 30 nodes (977 simplex iterations) in 0.06 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%