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

Optimize a model with 240 rows, 98 columns and 480 nonzeros
Presolve removed 82 rows and 16 columns
Presolve time: 0.00s
Presolved: 158 rows, 82 columns, 340 nonzeros
Variable types: 0 continuous, 82 integer (82 binary)
Found heuristic solution: objective 38.0000000

Root relaxation: objective 4.350000e+01, 106 iterations, 0.00 seconds

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

     0     0   43.50000    0   61   38.00000   43.50000  14.5%     -    0s
H    0     0                      40.0000000   43.50000  8.75%     -    0s
     0     0   43.00000    0   70   40.00000   43.00000  7.50%     -    0s
     0     0   42.69231    0   78   40.00000   42.69231  6.73%     -    0s
     0     0   42.15385    0   72   40.00000   42.15385  5.38%     -    0s
     0     0   41.95714    0   76   40.00000   41.95714  4.89%     -    0s
     0     0   41.88235    0   78   40.00000   41.88235  4.71%     -    0s
     0     0   41.80000    0   75   40.00000   41.80000  4.50%     -    0s
     0     0   41.80000    0   66   40.00000   41.80000  4.50%     -    0s
     0     0   41.80000    0   76   40.00000   41.80000  4.50%     -    0s
     0     0   41.80000    0   68   40.00000   41.80000  4.50%     -    0s
H    0     0                      41.0000000   41.80000  1.95%     -    0s

Cutting planes:
  Zero half: 17

Explored 0 nodes (361 simplex iterations) in 0.03 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%