Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:42:48 2012

Optimize a model with 187 rows, 137 columns and 602 nonzeros
Presolve time: 0.00s
Presolved: 187 rows, 137 columns, 602 nonzeros
Variable types: 0 continuous, 137 integer (137 binary)
Found heuristic solution: objective 40.0000000

Root relaxation: objective 0.000000e+00, 66 iterations, 0.00 seconds

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

     0     0    0.00000    0   43   40.00000    0.00000   100%     -    0s
H    0     0                      34.0000000    0.00000   100%     -    0s
H    0     0                      32.0000000    0.00000   100%     -    0s
     0     0    0.53978    0   44   32.00000    0.53978  98.3%     -    0s
     0     0    1.00000    0   46   32.00000    1.00000  96.9%     -    0s
     0     0    1.00000    0   44   32.00000    1.00000  96.9%     -    0s
     0     0    1.00000    0   43   32.00000    1.00000  96.9%     -    0s
H    0     0                      31.0000000    1.00000  96.8%     -    0s
     0     2    1.00000    0   43   31.00000    1.00000  96.8%     -    0s
*   26    25              17      24.0000000    2.77391  88.4%  30.6    0s
*   52    39              16      22.0000000    2.80059  87.3%  26.2    0s
*   53    31              17      21.0000000    2.80059  86.7%  25.7    0s
*  176    61              12      20.0000000    8.45730  57.7%  22.7    0s

Cutting planes:
  Gomory: 2
  Zero half: 2

Explored 473 nodes (10037 simplex iterations) in 0.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.000000000000e+01, best bound 2.000000000000e+01, gap 0.0%