Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:24:10 2012

Optimize a model with 311 rows, 227 columns and 1002 nonzeros
Presolve removed 0 rows and 2 columns
Presolve time: 0.00s
Presolved: 311 rows, 225 columns, 1000 nonzeros
Variable types: 0 continuous, 225 integer (224 binary)
Found heuristic solution: objective 72.0000000

Root relaxation: objective 0.000000e+00, 116 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   69   72.00000    0.00000   100%     -    0s
H    0     0                      40.0000000    0.00000   100%     -    0s
     0     0    0.47826    0   70   40.00000    0.47826  98.8%     -    0s
     0     0    1.00000    0   72   40.00000    1.00000  97.5%     -    0s
     0     0    1.00000    0   69   40.00000    1.00000  97.5%     -    0s
     0     2    1.00000    0   69   40.00000    1.00000  97.5%     -    0s
H   27    27                      32.0000000    3.42647  89.3%  37.7    0s
*   34    27              21      31.0000000    3.42647  88.9%  31.9    0s
H  637   290                      30.0000000   13.47619  55.1%  26.9    0s
*  694   289              30      29.0000000   13.47619  53.5%  26.8    0s
* 1548   225              31      28.0000000   17.59574  37.2%  23.6    1s
H 1897   220                      27.0000000   19.00000  29.6%  22.6    1s

Cutting planes:
  Gomory: 2

Explored 3117 nodes (63526 simplex iterations) in 2.43 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.700000000000e+01, best bound 2.700000000000e+01, gap 0.0%