Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:57:52 2013

Optimize a model with 14896 rows, 14516 columns and 57836 nonzeros
Presolve removed 38 rows and 0 columns
Presolve time: 0.06s
Presolved: 14858 rows, 14516 columns, 57798 nonzeros
Variable types: 14478 continuous, 38 integer (38 binary)

Root relaxation: objective 3.440928e+04, 1819 iterations, 0.31 seconds

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

     0     0 34409.2758    0   31          - 34409.2758     -      -    0s
H    0     0                    40924.000000 34409.2758  15.9%     -    0s
     0     0 37941.6117    0    6 40924.0000 37941.6117  7.29%     -    1s
H    0     0                    40165.919011 37941.6117  5.54%     -    1s
H    0     0                    38529.000000 37941.6117  1.52%     -    1s
     0     0 38049.8805    0    4 38529.0000 38049.8805  1.24%     -    1s
H    0     0                    38477.000000 38049.8805  1.11%     -    1s
H    0     0                    38156.000000 38049.8805  0.28%     -    1s
     0     2 38049.9839    0    4 38156.0000 38049.9839  0.28%     -    1s
*   12     3               9    38154.000000 38077.8122  0.20%  54.3    1s
H   18     7                    38133.280992 38110.6098  0.06%  49.1    1s
*   19     4               7    38116.000000 38110.6098  0.01%  46.6    1s

Cutting planes:
  Implied bound: 33

Explored 23 nodes (3802 simplex iterations) in 1.70 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 3.811600000000e+04, best bound 3.811351960784e+04, gap 0.0065%