Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:35:33 2012

Optimize a model with 273 rows, 214 columns and 894 nonzeros
Presolve time: 0.00s
Presolved: 273 rows, 214 columns, 894 nonzeros
Variable types: 0 continuous, 214 integer (214 binary)
Found heuristic solution: objective 60.0000000
Found heuristic solution: objective 56.0000000

Root relaxation: objective 0.000000e+00, 112 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   77   56.00000    0.00000   100%     -    0s
H    0     0                      38.0000000    0.00000   100%     -    0s
     0     0    0.49351    0   78   38.00000    0.49351  98.7%     -    0s
H    0     0                      31.0000000    0.49351  98.4%     -    0s
     0     0    1.00000    0   78   31.00000    1.00000  96.8%     -    0s
     0     0    1.00000    0   77   31.00000    1.00000  96.8%     -    0s
H    0     0                      24.0000000    1.00000  95.8%     -    0s
     0     2    1.00000    0   77   24.00000    1.00000  95.8%     -    0s
*   33    23              22      23.0000000    4.34821  81.1%  26.5    0s
*   74    52              13      22.0000000    6.50000  70.5%  26.0    0s
*   77    45              13      21.0000000    6.50000  69.0%  25.3    0s
*  117    67              15      20.0000000    7.00000  65.0%  26.4    0s

Cutting planes:
  Gomory: 2
  Mod-K: 1

Explored 927 nodes (20496 simplex iterations) in 0.60 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%