Gurobi 5.0.1 (linux64) logging started Sat Nov 17 01:49:31 2012

Optimize a model with 52055 rows, 46872 columns and 201958 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 1.23s
Presolved: 52269 rows, 46870 columns, 248132 nonzeros
Variable types: 0 continuous, 46870 integer (46870 binary)
Found heuristic solution: objective 216.0000000

Root relaxation: objective 2.000000e+00, 31598 iterations, 2.95 seconds
Total elapsed time = 8.13s

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

     0     0    2.00000    0  378  216.00000    2.00000  99.1%     -    9s
H    0     0                       4.0000000    2.00000  50.0%     -    9s
     0     0    2.66667    0 11602    4.00000    2.66667  33.3%     -   31s
H    0     0                       3.0000000    2.66667  11.1%     -   48s

Cutting planes:
  Clique: 4
  Zero half: 1

Explored 0 nodes (137666 simplex iterations) in 48.52 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%