Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:54:35 2012

Optimize a model with 69677 rows, 56406 columns and 264253 nonzeros
Presolve removed 23 rows and 5451 columns (presolve time = 5s) ...
Presolve removed 25 rows and 5453 columns
Presolve time: 5.28s
Presolved: 69652 rows, 50953 columns, 258214 nonzeros
Variable types: 0 continuous, 50953 integer (50953 binary)
Found heuristic solution: objective 237.0000000

Root relaxation: objective 2.000000e+00, 34885 iterations, 3.73 seconds
Total elapsed time = 14.35s

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

     0     0    2.00000    0  410  237.00000    2.00000  99.2%     -   15s
H    0     0                     208.0000000    2.00000  99.0%     -   16s
H    0     0                       4.0000000    2.00000  50.0%     -   16s
     0     0    2.20000    0 18276    4.00000    2.20000  45.0%     -   79s
     0     0    2.40000    0 21161    4.00000    2.40000  40.0%     -  172s
H    0     0                       3.0000000    2.40000  20.0%     -  197s

Cutting planes:
  Zero half: 11

Explored 0 nodes (203849 simplex iterations) in 197.21 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%