Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:29:15 2012

Optimize a model with 307 rows, 311 columns and 1076 nonzeros
Presolve removed 0 rows and 22 columns
Presolve time: 0.00s
Presolved: 307 rows, 289 columns, 1054 nonzeros
Variable types: 0 continuous, 289 integer (288 binary)
Found heuristic solution: objective 52.0000000

Root relaxation: objective 0.000000e+00, 174 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  117   52.00000    0.00000   100%     -    0s
H    0     0                      36.0000000    0.00000   100%     -    0s
H    0     0                      35.0000000    0.00000   100%     -    0s
H    0     0                      30.0000000    0.00000   100%     -    0s
     0     0    0.12139    0  119   30.00000    0.12139   100%     -    0s
H    0     0                      29.0000000    0.12139   100%     -    0s
     0     0    0.73017    0  123   29.00000    0.73017  97.5%     -    0s
H    0     0                      22.0000000    0.73017  96.7%     -    0s
     0     0    0.73054    0  128   22.00000    0.73054  96.7%     -    0s
     0     0    0.73054    0  125   22.00000    0.73054  96.7%     -    0s
H    0     0                      21.0000000    0.73054  96.5%     -    0s
     0     2    0.73147    0  125   21.00000    0.73147  96.5%     -    0s
H   27    27                      13.0000000    1.00000  92.3%  22.7    0s
*   53    40              36      10.0000000    1.00000  90.0%  19.8    0s
H  137    73                       9.0000000    1.00000  88.9%  17.8    0s
*  683   258              23       8.0000000    2.79797  65.0%  19.6    0s

Cutting planes:
  Gomory: 8

Explored 1007 nodes (19391 simplex iterations) in 0.94 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%