Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:00:16 2012

Optimize a model with 759 rows, 125 columns and 1518 nonzeros
Presolve removed 300 rows and 0 columns
Presolve time: 0.00s
Presolved: 459 rows, 125 columns, 1171 nonzeros
Variable types: 0 continuous, 125 integer (125 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 4.212150e+01, 299 iterations, 0.01 seconds

    Nodes    |    Current Node    |     Objective Bounds      |     Work
 Expl Unexpl |  Obj  Depth IntInf | Incumbent    BestBd   Gap | It/Node Time

     0     0   42.12150    0  124   28.00000   42.12150  50.4%     -    0s
H    0     0                      31.0000000   42.12150  35.9%     -    0s
     0     0   41.34917    0  125   31.00000   41.34917  33.4%     -    0s
     0     0   41.12752    0  125   31.00000   41.12752  32.7%     -    0s
     0     0   40.89324    0  124   31.00000   40.89324  31.9%     -    0s
     0     0   40.82603    0  125   31.00000   40.82603  31.7%     -    0s
     0     0   40.77162    0  124   31.00000   40.77162  31.5%     -    0s
     0     0   40.66926    0  124   31.00000   40.66926  31.2%     -    0s
     0     0   40.62190    0  123   31.00000   40.62190  31.0%     -    0s
     0     0   40.61943    0  124   31.00000   40.61943  31.0%     -    0s
     0     0   40.61943    0  124   31.00000   40.61943  31.0%     -    0s
     0     2   40.60090    0  123   31.00000   40.60090  31.0%     -    0s
H   10    10                      33.0000000   40.36592  22.3%  75.8    0s
*  289    94              14      34.0000000   38.77568  14.0%  32.5    0s
   617   183   35.59420   12  125   34.00000   37.86667  11.4%  30.6    5s

Cutting planes:
  Gomory: 2
  Clique: 1
  Zero half: 42

Explored 1926 nodes (57061 simplex iterations) in 7.58 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0%