Gurobi 5.0.1 (linux64) logging started Sat Nov 17 09:09:43 2012

Optimize a model with 79859 rows, 58806 columns and 297174 nonzeros
Presolve removed 16 rows and 3872 columns (presolve time = 5s) ...
Presolve removed 18 rows and 3874 columns
Presolve time: 6.73s
Presolved: 79841 rows, 54932 columns, 292642 nonzeros
Variable types: 0 continuous, 54932 integer (54932 binary)
Found heuristic solution: objective 242.0000000

Root relaxation: objective 2.000000e+00, 39249 iterations, 4.04 seconds
Total elapsed time = 18.09s

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

     0     0    2.00000    0  448  242.00000    2.00000  99.2%     -   19s
H    0     0                     223.0000000    2.00000  99.1%     -   20s
H    0     0                       4.0000000    2.00000  50.0%     -   20s
H    0     0                       3.0000000    2.00000  33.3%     -   20s
     0     0 infeasible    0         3.00000    2.00000  33.3%     -   20s

Cutting planes:
  Gomory: 2
  Clique: 2
  Zero half: 78

Explored 0 nodes (133996 simplex iterations) in 20.49 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%