Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:44:29 2012

Optimize a model with 1500 rows, 79 columns and 3000 nonzeros
Presolve removed 1051 rows and 0 columns
Presolve time: 0.03s
Presolved: 449 rows, 79 columns, 2776 nonzeros
Variable types: 0 continuous, 79 integer (79 binary)
Found heuristic solution: objective 7.0000000

Root relaxation: objective 1.234665e+01, 256 iterations, 0.01 seconds

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

     0     0   12.34665    0   75    7.00000   12.34665  76.4%     -    0s
     0     0   12.09669    0   76    7.00000   12.09669  72.8%     -    0s
H    0     0                       8.0000000   12.09669  51.2%     -    0s
     0     0   12.05236    0   78    8.00000   12.05236  50.7%     -    0s
     0     0   12.03608    0   78    8.00000   12.03608  50.5%     -    0s
     0     0   12.02392    0   79    8.00000   12.02392  50.3%     -    0s
H    0     0                       9.0000000   12.02392  33.6%     -    0s
     0     0   12.02203    0   79    9.00000   12.02203  33.6%     -    0s
     0     2   12.02196    0   79    9.00000   12.02196  33.6%     -    0s

Cutting planes:
  Gomory: 1
  Clique: 24
  Zero half: 16

Explored 37 nodes (2674 simplex iterations) in 0.35 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%