Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:40:02 2012

Optimize a model with 187 rows, 132 columns and 597 nonzeros
Presolve time: 0.00s
Presolved: 187 rows, 132 columns, 597 nonzeros
Variable types: 0 continuous, 132 integer (132 binary)
Found heuristic solution: objective 39.0000000

Root relaxation: objective 0.000000e+00, 69 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   39   39.00000    0.00000   100%     -    0s
H    0     0                      30.0000000    0.00000   100%     -    0s
     0     0    0.68738    0   42   30.00000    0.68738  97.7%     -    0s
     0     0    0.73398    0   44   30.00000    0.73398  97.6%     -    0s
     0     0    0.74074    0   41   30.00000    0.74074  97.5%     -    0s
     0     0    0.78348    0   41   30.00000    0.78348  97.4%     -    0s
     0     0    0.78348    0   41   30.00000    0.78348  97.4%     -    0s
     0     0    0.78348    0   41   30.00000    0.78348  97.4%     -    0s
H    0     0                      29.0000000    0.78348  97.3%     -    0s
     0     2    0.79798    0   41   29.00000    0.79798  97.2%     -    0s
*   23    23              15      27.0000000    4.58333  83.0%  22.0    0s
*   45    36              14      25.0000000    4.64815  81.4%  18.7    0s
*   47    28              15      24.0000000    4.64815  80.6%  18.1    0s
*   62    31              10      23.0000000    7.43333  67.7%  18.4    0s
H   81    35                      22.0000000    7.54630  65.7%  19.3    0s
*  122    38               8      21.0000000   10.71429  49.0%  20.0    0s

Cutting planes:
  Gomory: 1
  Zero half: 12

Explored 312 nodes (5740 simplex iterations) in 0.19 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.100000000000e+01, best bound 2.100000000000e+01, gap 0.0%