Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:14 2012

Optimize a model with 323 rows, 108 columns and 646 nonzeros
Presolve removed 71 rows and 7 columns
Presolve time: 0.00s
Presolved: 252 rows, 101 columns, 537 nonzeros
Variable types: 0 continuous, 101 integer (101 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.775000e+01, 138 iterations, 0.00 seconds

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

     0     0   47.75000    0   77   39.00000   47.75000  22.4%     -    0s
     0     0   46.00000    0   98   39.00000   46.00000  17.9%     -    0s
     0     0   44.90476    0   97   39.00000   44.90476  15.1%     -    0s
     0     0   44.41667    0  101   39.00000   44.41667  13.9%     -    0s
     0     0   44.26829    0  100   39.00000   44.26829  13.5%     -    0s
     0     0   44.16667    0   99   39.00000   44.16667  13.2%     -    0s
     0     0   44.08333    0   99   39.00000   44.08333  13.0%     -    0s
H    0     0                      40.0000000   44.08333  10.2%     -    0s
     0     0   43.95926    0   99   40.00000   43.95926  9.90%     -    0s
     0     0   43.92278    0   99   40.00000   43.92278  9.81%     -    0s
     0     0   43.92278    0   99   40.00000   43.92278  9.81%     -    0s
     0     2   43.92030    0   99   40.00000   43.92030  9.80%     -    0s
H   51    16                      41.0000000   43.43662  5.94%  18.2    0s
*   66     3               9      42.0000000   43.00000  2.38%  19.6    0s

Cutting planes:
  Gomory: 2
  Zero half: 63

Explored 70 nodes (1935 simplex iterations) in 0.08 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%