Gurobi 5.0.1 (linux64) logging started Sun Nov 18 02:59:49 2012

Optimize a model with 403 rows, 268 columns and 1273 nonzeros
Presolve time: 0.00s
Presolved: 403 rows, 268 columns, 1273 nonzeros
Variable types: 0 continuous, 268 integer (268 binary)
Found heuristic solution: objective 91.0000000

Root relaxation: objective 0.000000e+00, 104 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   91.00000    0.00000   100%     -    0s
H    0     0                      76.0000000    0.00000   100%     -    0s
     0     0    0.60050    0   69   76.00000    0.60050  99.2%     -    0s
     0     0    0.62587    0   69   76.00000    0.62587  99.2%     -    0s
H    0     0                      75.0000000    0.62587  99.2%     -    0s
     0     0    0.71045    0   69   75.00000    0.71045  99.1%     -    0s
     0     0    0.76119    0   69   75.00000    0.76119  99.0%     -    0s
     0     0    0.76965    0   69   75.00000    0.76965  99.0%     -    0s
     0     2    0.77460    0   69   75.00000    0.77460  99.0%     -    0s
*   49    49              27      56.0000000    4.54000  91.9%  28.4    0s
*  138    93              22      49.0000000    8.36000  82.9%  25.1    0s
* 1837   507              27      48.0000000   26.15385  45.5%  27.3    2s
  4378   831   43.85106   25  119   48.00000   31.16667  35.1%  26.6    5s
* 9452   780              30      47.0000000   36.51220  22.3%  25.6    9s
  9957   728     cutoff   26        47.00000   37.00000  21.3%  25.5   10s

Explored 13492 nodes (332048 simplex iterations) in 12.55 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.700000000000e+01, best bound 4.700000000000e+01, gap 0.0%