Gurobi 5.0.1 (linux64) logging started Sat Nov 17 08:51:12 2012

Optimize a model with 69407 rows, 58322 columns and 265339 nonzeros
Presolve removed 17 rows and 3617 columns
Presolve time: 1.81s
Presolved: 69390 rows, 54705 columns, 261148 nonzeros
Variable types: 0 continuous, 54705 integer (54705 binary)
Found heuristic solution: objective 241.0000000

Root relaxation: objective 2.000000e+00, 42239 iterations, 4.71 seconds
Total elapsed time = 11.28s

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

     0     0    2.00000    0  448  241.00000    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: 1
  Clique: 2
  Zero half: 50

Explored 0 nodes (131418 simplex iterations) in 13.72 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%