Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:07 2012

Optimize a model with 196 rows, 93 columns and 392 nonzeros
Presolve removed 51 rows and 17 columns
Presolve time: 0.00s
Presolved: 145 rows, 76 columns, 293 nonzeros
Variable types: 0 continuous, 76 integer (76 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 4.600000e+01, 98 iterations, 0.00 seconds

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

     0     0   46.00000    0   72   39.00000   46.00000  17.9%     -    0s
     0     0   45.00000    0   66   39.00000   45.00000  15.4%     -    0s
     0     0   44.50000    0   67   39.00000   44.50000  14.1%     -    0s
     0     0   44.25000    0   75   39.00000   44.25000  13.5%     -    0s
H    0     0                      40.0000000   44.25000  10.6%     -    0s
     0     0   43.85294    0   75   40.00000   43.85294  9.63%     -    0s
H    0     0                      42.0000000   43.85294  4.41%     -    0s
     0     0   43.62500    0   75   42.00000   43.62500  3.87%     -    0s
     0     0   43.31250    0   75   42.00000   43.31250  3.12%     -    0s
     0     0   43.26667    0   70   42.00000   43.26667  3.02%     -    0s
     0     0   43.16667    0   65   42.00000   43.16667  2.78%     -    0s
     0     0   43.12500    0   66   42.00000   43.12500  2.68%     -    0s
     0     0   43.12500    0   64   42.00000   43.12500  2.68%     -    0s
     0     2   43.12500    0   63   42.00000   43.12500  2.68%     -    0s

Cutting planes:
  Zero half: 26

Explored 3 nodes (383 simplex iterations) in 0.03 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%