Gurobi 5.0.1 (linux64) logging started Fri Nov 16 07:06:41 2012

Optimize a model with 11159 rows, 3660 columns and 36838 nonzeros
Presolve removed 2 rows and 2 columns
Presolve time: 0.28s
Presolved: 11217 rows, 3658 columns, 40066 nonzeros
Variable types: 0 continuous, 3658 integer (3658 binary)
Found heuristic solution: objective 60.0000000

Root relaxation: objective 2.000000e+00, 2502 iterations, 0.08 seconds

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

     0     0    2.00000    0  120   60.00000    2.00000  96.7%     -    0s
H    0     0                      56.0000000    2.00000  96.4%     -    0s
H    0     0                       5.0000000    2.00000  60.0%     -    0s
H    0     0                       4.0000000    2.00000  50.0%     -    0s
     0     0    3.00000    0 2081    4.00000    3.00000  25.0%     -    2s
     0     0 infeasible    0         4.00000    3.00001  25.0%     -    2s

Cutting planes:
  Clique: 39
  Zero half: 3

Explored 0 nodes (14000 simplex iterations) in 2.16 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%