Gurobi 5.0.1 (linux64) logging started Tue Apr 23 22:02:07 2013

Optimize a model with 75 rows, 1275 columns and 2525 nonzeros
Presolve removed 0 rows and 1 columns
Presolve time: 0.00s
Presolved: 75 rows, 1274 columns, 2524 nonzeros
Variable types: 1250 continuous, 24 integer (24 binary)

Root relaxation: objective 7.717666e+05, 30 iterations, 0.00 seconds

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

     0     0 771766.587    0   18          - 771766.587     -      -    0s
H    0     0                    861874.17500 771766.587  10.5%     -    0s
H    0     0                    857539.68750 771766.587  10.0%     -    0s
     0     0 830162.436    0    8 857539.687 830162.436  3.19%     -    0s
     0     0 836317.863    0    2 857539.687 836317.863  2.47%     -    0s
H    0     0                    846452.76802 836317.863  1.20%     -    0s
     0     0 837010.567    0    3 846452.768 837010.567  1.12%     -    0s
H    0     0                    838499.28750 837010.567  0.18%     -    0s
     0     0     cutoff    0      838499.287 838499.287   0.0%     -    0s

Cutting planes:
  Implied bound: 40
  Flow cover: 1

Explored 1 nodes (78 simplex iterations) in 0.01 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 8.384992875000e+05, best bound 8.384992875000e+05, gap 0.0%