Gurobi 5.0.1 (linux64) logging started Sat Nov 17 10:54:31 2012

Optimize a model with 74593 rows, 61256 columns and 283801 nonzeros
Presolve removed 19 rows and 4693 columns (presolve time = 5s) ...
Presolve removed 21 rows and 4695 columns
Presolve time: 6.51s
Presolved: 74572 rows, 56561 columns, 278504 nonzeros
Variable types: 0 continuous, 56561 integer (56561 binary)
Found heuristic solution: objective 247.0000000

Root relaxation: objective 2.000000e+00, 42333 iterations, 4.45 seconds
Total elapsed time = 16.77s

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

     0     0    2.00000    0  448  247.00000    2.00000  99.2%     -   18s
H    0     0                     213.0000000    2.00000  99.1%     -   19s
H    0     0                       4.0000000    2.00000  50.0%     -   19s
     0     0    2.66667    0 12451    4.00000    2.66667  33.3%     -   49s
H    0     0                       3.0000000    2.66667  11.1%     -   77s

Cutting planes:
  Clique: 4
  Zero half: 3

Explored 0 nodes (173012 simplex iterations) in 77.17 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%