Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:55:09 2013

Optimize a model with 1426 rows, 36696 columns and 1723787 nonzeros
Presolve removed 36 rows and 238 columns (presolve time = 5s) ...
Presolve removed 39 rows and 323 columns
Presolve time: 8.14s
Presolved: 1387 rows, 36373 columns, 1706187 nonzeros
Variable types: 0 continuous, 36373 integer (36373 binary)
Found heuristic solution: objective 19451.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8675    1.3079837e+04   6.997397e+02   0.000000e+00      5s
   10978    1.3095727e+04   0.000000e+00   0.000000e+00      8s

Root relaxation: objective 1.309573e+04, 10978 iterations, 8.23 seconds

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

     0     0 13095.7273    0  129 19451.0000 13095.7273  32.7%     -   17s
H    0     0                    13298.000000 13095.7273  1.52%     -   19s
     0     0 13110.5000    0   48 13298.0000 13110.5000  1.41%     -   22s
H    0     0                    13290.000000 13110.5000  1.35%     -   35s
     0     0 13110.5000    0   48 13290.0000 13110.5000  1.35%     -   39s
H    0     0                    13229.000000 13110.5000  0.90%     -   40s
*    0     0               0    13112.000000 13112.0000   0.0%     -   41s

Cutting planes:
  Clique: 3
  Zero half: 2

Explored 0 nodes (21528 simplex iterations) in 41.28 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.311200000000e+04, best bound 1.311200000000e+04, gap 0.0%