Gurobi 5.0.1 (linux64) logging started Mon Feb  4 17:24:09 2013

Optimize a model with 6017 rows, 1089 columns and 18513 nonzeros
Presolve removed 1673 rows and 592 columns
Presolve time: 0.04s
Presolved: 4344 rows, 497 columns, 13324 nonzeros
Variable types: 10 continuous, 487 integer (487 binary)
Found heuristic solution: objective 23539.000000
Found heuristic solution: objective 20430.000000

Root relaxation: objective 1.796582e+04, 1394 iterations, 0.03 seconds

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

     0     0 17965.8182    0    7 20430.0000 17965.8182  12.1%     -    0s
H    0     0                    17975.000000 17965.8182  0.05%     -    0s
     0     0 17965.8278    0   20 17975.0000 17965.8278  0.05%     -    0s
     0     0 17965.8278    0    6 17975.0000 17965.8278  0.05%     -    0s
H    0     0                    17971.000000 17965.8278  0.03%     -    0s
     0     0 17965.9809    0   10 17971.0000 17965.9809  0.03%     -    0s
     0     2 17966.0165    0   10 17971.0000 17966.0165  0.03%     -    0s

Cutting planes:
  Gomory: 10
  Cover: 3
  Implied bound: 1
  Clique: 3
  MIR: 14
  Zero half: 5

Explored 8 nodes (1849 simplex iterations) in 0.17 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 1.797100000000e+04, best bound 1.797000000000e+04, gap 0.0056%