Gurobi 5.0.1 (linux64) logging started Tue Nov 20 06:33:15 2012

Optimize a model with 949 rows, 141 columns and 1898 nonzeros
Presolve removed 360 rows and 0 columns
Presolve time: 0.01s
Presolved: 589 rows, 141 columns, 1518 nonzeros
Variable types: 0 continuous, 141 integer (141 binary)
Found heuristic solution: objective 35.0000000

Root relaxation: objective 4.805414e+01, 390 iterations, 0.01 seconds

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

     0     0   48.05414    0  138   35.00000   48.05414  37.3%     -    0s
H    0     0                      36.0000000   48.05414  33.5%     -    0s
     0     0   47.74528    0  141   36.00000   47.74528  32.6%     -    0s
     0     0   47.67427    0  139   36.00000   47.67427  32.4%     -    0s
     0     0   47.61171    0  140   36.00000   47.61171  32.3%     -    0s
H    0     0                      38.0000000   47.61171  25.3%     -    0s
     0     0   47.57332    0  138   38.00000   47.57332  25.2%     -    0s
     0     0   47.47861    0  141   38.00000   47.47861  24.9%     -    0s
     0     0   47.32151    0  141   38.00000   47.32151  24.5%     -    0s
H    0     0                      39.0000000   47.32151  21.3%     -    0s
     0     0   47.32151    0  141   39.00000   47.32151  21.3%     -    0s
H    0     0                      40.0000000   47.32151  18.3%     -    0s
     0     2   47.31871    0  141   40.00000   47.31871  18.3%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 2
  Zero half: 21

Explored 758 nodes (29862 simplex iterations) in 1.33 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%