Gurobi 5.0.1 (linux64) logging started Wed Apr 24 00:56:22 2013

Optimize a model with 396 rows, 12996 columns and 25956 nonzeros
Presolve time: 0.02s
Presolved: 396 rows, 12996 columns, 25956 nonzeros
Variable types: 12960 continuous, 36 integer (36 binary)

Root relaxation: objective 4.200353e+04, 721 iterations, 0.01 seconds

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

     0     0 42003.5260    0    8          - 42003.5260     -      -    0s
H    0     0                    42890.000000 42003.5260  2.07%     -    0s
H    0     0                    42710.000000 42003.5260  1.65%     -    0s
     0     0 42411.6910    0    4 42710.0000 42411.6910  0.70%     -    0s
     0     0 42430.5018    0    3 42710.0000 42430.5018  0.65%     -    0s
H    0     0                    42529.000000 42430.5018  0.23%     -    0s
     0     0 42431.0559    0    2 42529.0000 42431.0559  0.23%     -    0s
     0     0 42432.5649    0    4 42529.0000 42432.5649  0.23%     -    0s
     0     0 42433.1298    0    2 42529.0000 42433.1298  0.23%     -    0s
     0     0 42433.4532    0    5 42529.0000 42433.4532  0.22%     -    0s
     0     0 42434.3189    0    3 42529.0000 42434.3189  0.22%     -    0s
     0     0 42434.3930    0    2 42529.0000 42434.3930  0.22%     -    0s
     0     0 42435.0246    0    2 42529.0000 42435.0246  0.22%     -    0s
H    0     0                    42446.000000 42435.0246  0.03%     -    0s
     0     0 42443.3426    0    3 42446.0000 42443.3426  0.01%     -    0s

Cutting planes:
  Implied bound: 41
  Flow cover: 3

Explored 0 nodes (925 simplex iterations) in 0.26 seconds
Thread count was 1 (of 16 available processors)

Optimal solution found (tolerance 1.00e-04)
Best objective 4.244600000000e+04, best bound 4.244334256833e+04, gap 0.0063%