Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:53:30 2012

Optimize a model with 689 rows, 118 columns and 1378 nonzeros
Presolve removed 280 rows and 1 columns
Presolve time: 0.00s
Presolved: 409 rows, 117 columns, 1039 nonzeros
Variable types: 0 continuous, 117 integer (117 binary)
Found heuristic solution: objective 28.0000000

Root relaxation: objective 4.044872e+01, 303 iterations, 0.01 seconds

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

     0     0   40.44872    0  115   28.00000   40.44872  44.5%     -    0s
H    0     0                      30.0000000   40.44872  34.8%     -    0s
     0     0   40.02845    0  113   30.00000   40.02845  33.4%     -    0s
     0     0   39.94622    0  117   30.00000   39.94622  33.2%     -    0s
     0     0   39.81429    0  116   30.00000   39.81429  32.7%     -    0s
H    0     0                      32.0000000   39.81429  24.4%     -    0s
     0     0   39.50290    0  116   32.00000   39.50290  23.4%     -    0s
     0     0   39.38432    0  116   32.00000   39.38432  23.1%     -    0s
     0     0   39.22790    0  117   32.00000   39.22790  22.6%     -    0s
     0     0   39.15516    0  116   32.00000   39.15516  22.4%     -    0s
     0     0   38.96742    0  115   32.00000   38.96742  21.8%     -    0s
     0     0   38.87710    0  116   32.00000   38.87710  21.5%     -    0s
     0     0   38.86458    0  116   32.00000   38.86458  21.5%     -    0s
     0     0   38.86458    0  116   32.00000   38.86458  21.5%     -    0s
     0     2   38.86149    0  116   32.00000   38.86149  21.4%     -    0s
*   69    24              14      33.0000000   38.36653  16.3%  31.8    0s

Cutting planes:
  Clique: 5
  Zero half: 61

Explored 938 nodes (23702 simplex iterations) in 0.86 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%