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

Optimize a model with 1529 rows, 44823 columns and 1976983 nonzeros
Presolve removed 30 rows and 168 columns (presolve time = 5s) ...
Presolve removed 33 rows and 202 columns
Presolve time: 9.39s
Presolved: 1496 rows, 44621 columns, 1969817 nonzeros
Variable types: 0 continuous, 44621 integer (44621 binary)
Found heuristic solution: objective 19837.000000

Root simplex log...

Iteration    Objective       Primal Inf.    Dual Inf.      Time
    8567    1.5061133e+04   5.636506e+02   0.000000e+00      5s
   12395    1.5109557e+04   2.036857e+02   0.000000e+00     10s
   12937    1.5111517e+04   0.000000e+00   0.000000e+00     11s

Root relaxation: objective 1.511152e+04, 12937 iterations, 10.91 seconds

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

     0     0 15111.5167    0  175 19837.0000 15111.5167  23.8%     -   21s
H    0     0                    18290.000000 15111.5167  17.4%     -   23s
     0     0 15121.0000    0   62 18290.0000 15121.0000  17.3%     -   27s
H    0     0                    15141.000000 15121.0000  0.13%     -   27s
     0     0 15122.8000    0  117 15141.0000 15122.8000  0.12%     -   30s
     0     0 15122.8000    0   90 15141.0000 15122.8000  0.12%     -   42s
     0     0 15123.9386    0  194 15141.0000 15123.9386  0.11%     -   43s
     0     0 15125.7944    0  249 15141.0000 15125.7944  0.10%     -   44s
     0     0 15126.3524    0  165 15141.0000 15126.3524  0.10%     -   45s
     0     0 15127.8636    0  224 15141.0000 15127.8636  0.09%     -   46s
*    0     0               0    15128.000000 15128.0000   0.0%     -   46s

Cutting planes:
  Gomory: 1
  Clique: 27
  Zero half: 35

Explored 0 nodes (26419 simplex iterations) in 46.87 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.512800000000e+04, best bound 1.512800000000e+04, gap 0.0%