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

Optimize a model with 247 rows, 94 columns and 494 nonzeros
Presolve removed 52 rows and 4 columns
Presolve time: 0.00s
Presolved: 195 rows, 90 columns, 419 nonzeros
Variable types: 0 continuous, 90 integer (90 binary)
Found heuristic solution: objective 36.0000000

Root relaxation: objective 4.050000e+01, 121 iterations, 0.00 seconds

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

     0     0   40.50000    0   67   36.00000   40.50000  12.5%     -    0s
H    0     0                      37.0000000   40.50000  9.46%     -    0s
     0     0   40.00000    0   62   37.00000   40.00000  8.11%     -    0s
     0     0   40.00000    0   54   37.00000   40.00000  8.11%     -    0s
     0     0   40.00000    0   58   37.00000   40.00000  8.11%     -    0s
     0     0   39.92308    0   74   37.00000   39.92308  7.90%     -    0s
     0     0   39.85714    0   81   37.00000   39.85714  7.72%     -    0s
     0     0   39.47368    0   84   37.00000   39.47368  6.69%     -    0s
     0     0   39.33333    0   84   37.00000   39.33333  6.31%     -    0s
     0     0   39.21429    0   87   37.00000   39.21429  5.98%     -    0s
     0     0   39.14634    0   86   37.00000   39.14634  5.80%     -    0s
     0     0   39.14286    0   85   37.00000   39.14286  5.79%     -    0s
     0     0   39.14286    0   85   37.00000   39.14286  5.79%     -    0s
     0     0   39.14286    0   83   37.00000   39.14286  5.79%     -    0s
H    0     0                      38.0000000   39.14286  3.01%     -    0s
     0     1   39.14286    0   82   38.00000   39.14286  3.01%     -    0s

Cutting planes:
  Gomory: 1
  Zero half: 26

Explored 3 nodes (526 simplex iterations) in 0.05 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.800000000000e+01, best bound 3.800000000000e+01, gap 0.0%