Gurobi 5.0.1 (linux64) logging started Sat Nov 17 06:42:51 2012

Optimize a model with 68903 rows, 54056 columns and 259606 nonzeros
Presolve removed 21 rows and 4872 columns (presolve time = 5s) ...
Presolve removed 23 rows and 4874 columns
Presolve time: 5.28s
Presolved: 68880 rows, 49182 columns, 254140 nonzeros
Variable types: 0 continuous, 49182 integer (49182 binary)
Found heuristic solution: objective 232.0000000

Root relaxation: objective 2.000000e+00, 37198 iterations, 3.71 seconds
Total elapsed time = 14.01s

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

     0     0    2.00000    0  408  232.00000    2.00000  99.1%     -   15s
H    0     0                       4.0000000    2.00000  50.0%     -   16s
     0     0    2.66667    0 12881    4.00000    2.66667  33.3%     -   92s
     0     0    2.66667    0 18729    4.00000    2.66667  33.3%     -  148s
H    0     0                       3.0000000    2.66667  11.1%     -  177s

Cutting planes:
  Clique: 6
  Zero half: 7

Explored 0 nodes (192485 simplex iterations) in 177.42 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%