Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:19:31 2012

Optimize a model with 69695 rows, 58806 columns and 266682 nonzeros
Presolve removed 22 rows and 4842 columns
Presolve time: 1.61s
Presolved: 69673 rows, 53964 columns, 261266 nonzeros
Variable types: 0 continuous, 53964 integer (53964 binary)
Found heuristic solution: objective 242.0000000

Root relaxation: objective 2.000000e+00, 39630 iterations, 3.65 seconds
Total elapsed time = 10.22s

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

     0     0    2.00000    0  424  242.00000    2.00000  99.2%     -   12s
H    0     0                     238.0000000    2.00000  99.2%     -   12s
H    0     0                       4.0000000    2.00000  50.0%     -   12s
     0     0    2.66667    0 4227    4.00000    2.66667  33.3%     -   49s
H    0     0                       3.0000000    2.66667  11.1%     -   55s

Cutting planes:
  Clique: 6
  Zero half: 1

Explored 0 nodes (176474 simplex iterations) in 55.14 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%