Gurobi 5.0.1 (linux64) logging started Mon Feb  4 16:33:04 2013

Optimize a model with 1448 rows, 31776 columns and 1781401 nonzeros
Presolve removed 71 rows and 720 columns (presolve time = 5s) ...
Presolve removed 71 rows and 720 columns
Presolve time: 5.48s
Presolved: 1377 rows, 31056 columns, 1738388 nonzeros
Variable types: 0 continuous, 31056 integer (31056 binary)
Found heuristic solution: objective 17215.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    7392    1.3020131e+04   9.252933e+01   0.000000e+00      5s
    7614    1.3021000e+04   0.000000e+00   0.000000e+00      5s

Root relaxation: objective 1.302100e+04, 7614 iterations, 5.34 seconds

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

     0     0 13021.0000    0   67 17215.0000 13021.0000  24.4%     -   12s
H    0     0                    13132.000000 13021.0000  0.85%     -   13s
*    0     0               0    13024.000000 13024.0000   0.0%     -   15s

Cutting planes:
  Clique: 6
  Zero half: 19

Explored 0 nodes (9246 simplex iterations) in 15.47 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.302400000000e+04, best bound 1.302400000000e+04, gap 0.0%