Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:00:35 2012

Optimize a model with 67961 rows, 58322 columns and 261001 nonzeros
Presolve removed 18 rows and 3858 columns
Presolve time: 1.76s
Presolved: 67943 rows, 54464 columns, 256581 nonzeros
Variable types: 0 continuous, 54464 integer (54464 binary)
Found heuristic solution: objective 241.0000000

Root relaxation: objective 2.000000e+00, 41092 iterations, 4.40 seconds
Total elapsed time = 11.66s

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

     0     0    2.00000    0  434  241.00000    2.00000  99.2%     -   13s
H    0     0                     192.0000000    2.00000  99.0%     -   13s
H    0     0                       4.0000000    2.00000  50.0%     -   13s
     0     0    2.66667    0 10422    4.00000    2.66667  33.3%     -   48s
H    0     0                       3.0000000    2.66667  11.1%     -   69s

Cutting planes:
  Clique: 2
  Zero half: 4

Explored 0 nodes (176140 simplex iterations) in 69.84 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%