Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:13:11 2012

Optimize a model with 147 rows, 131 columns and 496 nonzeros
Presolve removed 0 rows and 4 columns
Presolve time: 0.00s
Presolved: 147 rows, 127 columns, 492 nonzeros
Variable types: 0 continuous, 127 integer (126 binary)
Found heuristic solution: objective 25.0000000

Root relaxation: objective 0.000000e+00, 81 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   50   25.00000    0.00000   100%     -    0s
H    0     0                      22.0000000    0.00000   100%     -    0s
H    0     0                      21.0000000    0.00000   100%     -    0s
     0     0    0.28188    0   52   21.00000    0.28188  98.7%     -    0s
H    0     0                      20.0000000    0.28188  98.6%     -    0s
     0     0    0.84507    0   56   20.00000    0.84507  95.8%     -    0s
     0     0    0.84507    0   57   20.00000    0.84507  95.8%     -    0s
     0     0    0.84507    0   54   20.00000    0.84507  95.8%     -    0s
H    0     0                      18.0000000    0.84507  95.3%     -    0s
H    0     0                      17.0000000    0.84507  95.0%     -    0s
     0     2    0.84507    0   54   17.00000    0.84507  95.0%     -    0s
*   19    13              14      10.0000000    1.79570  82.0%  20.1    0s
*   34    11               9       8.0000000    1.96121  75.5%  20.9    0s

Cutting planes:
  Gomory: 4
  Zero half: 1

Explored 81 nodes (1957 simplex iterations) in 0.10 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%