Gurobi 5.0.1 (linux64) logging started Sat Nov 17 07:50:11 2012

Optimize a model with 67070 rows, 56406 columns and 256432 nonzeros
Presolve removed 23 rows and 4979 columns
Presolve time: 1.60s
Presolved: 67047 rows, 51427 columns, 250889 nonzeros
Variable types: 0 continuous, 51427 integer (51427 binary)
Found heuristic solution: objective 237.0000000

Root relaxation: objective 2.000000e+00, 36691 iterations, 3.67 seconds
Total elapsed time = 10.26s

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

     0     0    2.00000    0  408  237.00000    2.00000  99.2%     -   11s
H    0     0                     209.0000000    2.00000  99.0%     -   12s
H    0     0                       4.0000000    2.00000  50.0%     -   12s
H    0     0                       3.0000000    2.00000  33.3%     -   12s

Cutting planes:
  Zero half: 6

Explored 0 nodes (124556 simplex iterations) in 12.44 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.000000000000e+00, best bound 2.000000000000e+00, gap 33.3333%