Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:01:57 2013

Optimize a model with 1480 rows, 40693 columns and 1855014 nonzeros
Presolve removed 1 rows and 0 columns
Presolve time: 1.74s
Presolved: 1479 rows, 40693 columns, 1855624 nonzeros
Variable types: 0 continuous, 40693 integer (40693 binary)
Found heuristic solution: objective 19834.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8364    1.3842045e+04   5.789949e+02   0.000000e+00      5s
    9898    1.3861000e+04   0.000000e+00   0.000000e+00      7s

Root relaxation: objective 1.386100e+04, 9898 iterations, 7.04 seconds
Total elapsed time = 10.01s

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

     0     0 13861.0000    0  110 19834.0000 13861.0000  30.1%     -   10s
H    0     0                    14028.000000 13861.0000  1.19%     -   31s
     0     0 13867.6364    0  134 14028.0000 13867.6364  1.14%     -   35s
     0     0 13867.6364    0   61 14028.0000 13867.6364  1.14%     -   56s
     0     0 13872.6481    0  161 14028.0000 13872.6481  1.11%     -   58s
*    0     0               0    13875.000000 13875.0000   0.0%     -   61s

Cutting planes:
  Clique: 17
  Zero half: 29

Explored 0 nodes (23739 simplex iterations) in 61.25 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.387500000000e+04, best bound 1.387500000000e+04, gap 0.0%