Gurobi 5.0.1 (linux64) logging started Sun Nov 18 01:37:44 2012

Optimize a model with 343 rows, 232 columns and 1087 nonzeros
Presolve time: 0.00s
Presolved: 343 rows, 232 columns, 1087 nonzeros
Variable types: 0 continuous, 232 integer (232 binary)
Found heuristic solution: objective 77.0000000

Root relaxation: objective 0.000000e+00, 97 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   61   77.00000    0.00000   100%     -    0s
H    0     0                      68.0000000    0.00000   100%     -    0s
     0     0    0.52572    0   62   68.00000    0.52572  99.2%     -    0s
     0     0    1.13982    0   66   68.00000    1.13982  98.3%     -    0s
     0     2    1.15638    0   66   68.00000    1.15638  98.3%     -    0s
H   32    32                      49.0000000    2.20876  95.5%  31.5    0s
*   41    41              24      48.0000000    2.20876  95.4%  27.8    0s
*   43    39              24      47.0000000    2.20876  95.3%  26.7    0s
H   81    65                      46.0000000    2.31034  95.0%  27.0    0s
H  108    85                      45.0000000    5.72881  87.3%  29.2    0s
H  408   254                      43.0000000   10.69231  75.1%  28.1    0s
* 1084   454              38      42.0000000   16.27259  61.3%  29.2    1s
* 3315   679              29      41.0000000   25.62500  37.5%  27.1    3s
  5071   677   38.81250   26  113   41.00000   28.21739  31.2%  27.1    5s
* 8391   149              34      40.0000000   36.48000  8.80%  26.1    7s

Cutting planes:
  Gomory: 3

Explored 8588 nodes (221629 simplex iterations) in 7.88 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+01, best bound 4.000000000000e+01, gap 0.0%