Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:18 2012

Optimize a model with 340 rows, 115 columns and 680 nonzeros
Presolve removed 58 rows and 6 columns
Presolve time: 0.00s
Presolved: 282 rows, 109 columns, 589 nonzeros
Variable types: 0 continuous, 109 integer (109 binary)
Found heuristic solution: objective 42.0000000

Root relaxation: objective 5.200000e+01, 140 iterations, 0.00 seconds

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

     0     0   52.00000    0   96   42.00000   52.00000  23.8%     -    0s
     0     0   49.50000    0   89   42.00000   49.50000  17.9%     -    0s
     0     0   49.31250    0  107   42.00000   49.31250  17.4%     -    0s
     0     0   49.00000    0   88   42.00000   49.00000  16.7%     -    0s
     0     0   48.55556    0  107   42.00000   48.55556  15.6%     -    0s
     0     0   48.16667    0  105   42.00000   48.16667  14.7%     -    0s
     0     0   47.55000    0  106   42.00000   47.55000  13.2%     -    0s
     0     0   47.42038    0  106   42.00000   47.42038  12.9%     -    0s
     0     0   47.15663    0  107   42.00000   47.15663  12.3%     -    0s
H    0     0                      43.0000000   47.15663  9.67%     -    0s
     0     0   47.05680    0  107   43.00000   47.05680  9.43%     -    0s
     0     0   46.88360    0  108   43.00000   46.88360  9.03%     -    0s
     0     0   46.81909    0  108   43.00000   46.81909  8.88%     -    0s
     0     0   46.81909    0  108   43.00000   46.81909  8.88%     -    0s
     0     2   46.81629    0  108   43.00000   46.81629  8.88%     -    0s
*    8     6               7      44.0000000   46.80460  6.37%  29.9    0s

Cutting planes:
  Gomory: 1
  Zero half: 85

Explored 40 nodes (1841 simplex iterations) in 0.10 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.400000000000e+01, best bound 4.400000000000e+01, gap 0.0%