Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:03:29 2012

Optimize a model with 413 rows, 273 columns and 1303 nonzeros
Presolve time: 0.00s
Presolved: 413 rows, 273 columns, 1303 nonzeros
Variable types: 0 continuous, 273 integer (273 binary)
Found heuristic solution: objective 82.0000000

Root relaxation: objective 0.000000e+00, 100 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   67   82.00000    0.00000   100%     -    0s
     0     0    0.75104    0   69   82.00000    0.75104  99.1%     -    0s
H    0     0                      78.0000000    0.75104  99.0%     -    0s
     0     0    0.82812    0   69   78.00000    0.82812  98.9%     -    0s
     0     0    0.84239    0   69   78.00000    0.84239  98.9%     -    0s
     0     0    0.86269    0   69   78.00000    0.86269  98.9%     -    0s
     0     0    0.87284    0   69   78.00000    0.87284  98.9%     -    0s
H    0     0                      74.0000000    0.87284  98.8%     -    0s
     0     2    1.04615    0   69   74.00000    1.04615  98.6%     -    0s
H   32    32                      63.0000000    5.80000  90.8%  40.3    0s
*   34    34              20      59.0000000    5.80000  90.2%  38.9    0s
*   36    31              19      56.0000000    5.80000  89.6%  37.1    0s
*   63    53              16      53.0000000    5.82690  89.0%  35.3    0s
*  281   210              22      52.0000000   14.13397  72.8%  33.6    0s
*  550   313              19      51.0000000   19.64640  61.5%  29.8    0s
* 4196   583              25      50.0000000   35.75000  28.5%  27.4    4s
  4367   586     cutoff   22        50.00000   36.26000  27.5%  27.3    5s

Explored 9467 nodes (239765 simplex iterations) in 9.28 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%