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

Optimize a model with 306 rows, 105 columns and 612 nonzeros
Presolve removed 62 rows and 6 columns
Presolve time: 0.00s
Presolved: 244 rows, 99 columns, 517 nonzeros
Variable types: 0 continuous, 99 integer (99 binary)
Found heuristic solution: objective 37.0000000

Root relaxation: objective 4.800000e+01, 115 iterations, 0.00 seconds

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

     0     0   48.00000    0   84   37.00000   48.00000  29.7%     -    0s
H    0     0                      40.0000000   48.00000  20.0%     -    0s
     0     0   46.31250    0   97   40.00000   46.31250  15.8%     -    0s
     0     0   45.42857    0   96   40.00000   45.42857  13.6%     -    0s
     0     0   44.87805    0   97   40.00000   44.87805  12.2%     -    0s
H    0     0                      42.0000000   44.87805  6.85%     -    0s
     0     0   44.50000    0   97   42.00000   44.50000  5.95%     -    0s
     0     0   44.26667    0   96   42.00000   44.26667  5.40%     -    0s
     0     0   44.14721    0   97   42.00000   44.14721  5.11%     -    0s
     0     0   44.03774    0   98   42.00000   44.03774  4.85%     -    0s
     0     0   43.96104    0   97   42.00000   43.96104  4.67%     -    0s
     0     0   43.94118    0   97   42.00000   43.94118  4.62%     -    0s
     0     0   43.94118    0   95   42.00000   43.94118  4.62%     -    0s
     0     2   43.94118    0   95   42.00000   43.94118  4.62%     -    0s

Cutting planes:
  Zero half: 42

Explored 17 nodes (823 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.200000000000e+01, best bound 4.200000000000e+01, gap 0.0%