Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:01:36 2012

Optimize a model with 67353 rows, 56882 columns and 257752 nonzeros
Presolve removed 18 rows and 3810 columns
Presolve time: 1.69s
Presolved: 67335 rows, 53072 columns, 253378 nonzeros
Variable types: 0 continuous, 53072 integer (53072 binary)
Found heuristic solution: objective 238.0000000

Root relaxation: objective 2.000000e+00, 41314 iterations, 4.53 seconds
Total elapsed time = 11.19s

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

     0     0    2.00000    0  432  238.00000    2.00000  99.2%     -   12s
H    0     0                     237.0000000    2.00000  99.2%     -   13s
H    0     0                       4.0000000    2.00000  50.0%     -   13s
H    0     0                       3.0000000    2.00000  33.3%     -   13s
     0     0 infeasible    0         3.00000    2.00000  33.3%     -   13s

Cutting planes:
  Gomory: 3
  Clique: 4
  Zero half: 40

Explored 0 nodes (134153 simplex iterations) in 13.62 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%