Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:34:26 2013

Optimize a model with 6579 rows, 1156 columns and 20230 nonzeros
Presolve removed 1368 rows and 607 columns
Presolve time: 0.04s
Presolved: 5211 rows, 549 columns, 16098 nonzeros
Variable types: 15 continuous, 534 integer (534 binary)
Found heuristic solution: objective 25888.000000

Root relaxation: objective 2.189474e+04, 1899 iterations, 0.05 seconds

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

     0     0 21894.7407    0    8 25888.0000 21894.7407  15.4%     -    0s
H    0     0                    21908.000000 21894.7407  0.06%     -    0s
H    0     0                    21904.000000 21894.7407  0.04%     -    0s
     0     0 21895.8722    0   19 21904.0000 21895.8722  0.04%     -    0s
     0     0 21895.8722    0    9 21904.0000 21895.8722  0.04%     -    0s
     0     0 21896.4569    0   25 21904.0000 21896.4569  0.03%     -    0s
     0     0 21897.2372    0   28 21904.0000 21897.2372  0.03%     -    0s
     0     1 21897.2600    0   28 21904.0000 21897.2600  0.03%     -    0s

Cutting planes:
  Gomory: 4
  Implied bound: 3
  MIR: 17
  Zero half: 2

Explored 52 nodes (2654 simplex iterations) in 0.24 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 2.190400000000e+04, best bound 2.190400000000e+04, gap 0.0%