Gurobi 5.0.1 (linux64) logging started Sat Nov 17 02:25:07 2012

Optimize a model with 59786 rows, 48180 columns and 226444 nonzeros
Presolve removed 23 rows and 4601 columns
Presolve time: 3.94s
Presolved: 59763 rows, 43579 columns, 221299 nonzeros
Variable types: 0 continuous, 43579 integer (43579 binary)
Found heuristic solution: objective 219.0000000

Root relaxation: objective 2.000000e+00, 32869 iterations, 3.24 seconds
Total elapsed time = 11.25s

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

     0     0    2.00000    0  388  219.00000    2.00000  99.1%     -   12s
H    0     0                     217.0000000    2.00000  99.1%     -   12s
H    0     0                       4.0000000    2.00000  50.0%     -   12s
H    0     0                       3.0000000    2.00000  33.3%     -   12s
     0     0 infeasible    0         3.00000    2.00000  33.3%     -   13s

Cutting planes:
  Gomory: 1
  Zero half: 56

Explored 0 nodes (107187 simplex iterations) in 13.11 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%