Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:54:57 2012

Optimize a model with 690 rows, 120 columns and 1380 nonzeros
Presolve removed 254 rows and 0 columns
Presolve time: 0.00s
Presolved: 436 rows, 120 columns, 1089 nonzeros
Variable types: 0 continuous, 120 integer (120 binary)
Found heuristic solution: objective 29.0000000

Root relaxation: objective 4.099259e+01, 307 iterations, 0.01 seconds

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

     0     0   40.99259    0  119   29.00000   40.99259  41.4%     -    0s
     0     0   40.55680    0  119   29.00000   40.55680  39.9%     -    0s
H    0     0                      30.0000000   40.55680  35.2%     -    0s
     0     0   40.40100    0  119   30.00000   40.40100  34.7%     -    0s
H    0     0                      32.0000000   40.40100  26.3%     -    0s
     0     0   40.16051    0  119   32.00000   40.16051  25.5%     -    0s
     0     0   39.89755    0  119   32.00000   39.89755  24.7%     -    0s
     0     0   39.77819    0  119   32.00000   39.77819  24.3%     -    0s
     0     0   39.73405    0  119   32.00000   39.73405  24.2%     -    0s
     0     0   39.67131    0  118   32.00000   39.67131  24.0%     -    0s
     0     0   39.64417    0  118   32.00000   39.64417  23.9%     -    0s
     0     0   39.59414    0  118   32.00000   39.59414  23.7%     -    0s
     0     0   39.59178    0  119   32.00000   39.59178  23.7%     -    0s
     0     0   39.59178    0  119   32.00000   39.59178  23.7%     -    0s
     0     2   39.59178    0  119   32.00000   39.59178  23.7%     -    0s
H  926   172                      33.0000000   36.61972  11.0%  29.1    1s

Explored 2753 nodes (66120 simplex iterations) in 2.64 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%