Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:55:36 2012

Optimize a model with 259 rows, 152 columns and 797 nonzeros
Presolve time: 0.00s
Presolved: 259 rows, 152 columns, 797 nonzeros
Variable types: 0 continuous, 152 integer (152 binary)
Found heuristic solution: objective 63.0000000

Root relaxation: objective 0.000000e+00, 54 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   23   63.00000    0.00000   100%     -    0s
H    0     0                      61.0000000    0.00000   100%     -    0s
     0     0    0.56917    0   25   61.00000    0.56917  99.1%     -    0s
     0     0    0.73518    0   25   61.00000    0.73518  98.8%     -    0s
     0     0    0.75889    0   25   61.00000    0.75889  98.8%     -    0s
     0     0    0.75889    0   25   61.00000    0.75889  98.8%     -    0s
     0     0    0.76364    0   38   61.00000    0.76364  98.7%     -    0s
     0     0    0.76364    0   38   61.00000    0.76364  98.7%     -    0s
H    0     0                      57.0000000    0.76364  98.7%     -    0s
     0     2    1.01653    0   38   57.00000    1.01653  98.2%     -    0s
*  167    99              14      56.0000000   18.31551  67.3%  27.6    0s
*  169    98              15      55.0000000   18.31551  66.7%  27.3    0s
H  299   137                      53.0000000   23.09091  56.4%  24.3    0s
* 1279   114              22      52.0000000   31.60000  39.2%  21.1    0s
* 1438   127              22      51.0000000   32.75000  35.8%  20.8    0s
* 2277    90              21      50.0000000   39.09091  21.8%  19.2    1s

Cutting planes:
  Gomory: 1
  Zero half: 3

Explored 2767 nodes (51432 simplex iterations) in 1.39 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 5.000000000000e+01, best bound 5.000000000000e+01, gap 0.0%