Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:45:39 2013 Optimize a model with 40446 rows, 39816 columns and 158886 nonzeros Presolve removed 63 rows and 0 columns Presolve time: 0.18s Presolved: 40383 rows, 39816 columns, 158823 nonzeros Variable types: 39753 continuous, 63 integer (63 binary) Root relaxation: objective 5.252322e+04, 4927 iterations, 2.44 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 52523.2222 0 49 - 52523.2222 - - 2s H 0 0 79235.000000 52523.2222 33.7% - 4s 0 0 66287.3142 0 13 79235.0000 66287.3142 16.3% - 8s H 0 0 77590.919453 66287.3142 14.6% - 8s H 0 0 72105.000000 66287.3142 8.07% - 8s 0 0 66794.8388 0 4 72105.0000 66794.8388 7.36% - 9s H 0 0 71681.053526 66794.8388 6.82% - 9s H 0 0 70613.000000 66794.8388 5.41% - 9s 0 0 66858.7981 0 5 70613.0000 66858.7981 5.32% - 9s H 0 0 69396.534852 66858.7981 3.66% - 9s H 0 0 68645.000000 66858.7981 2.60% - 10s 0 0 66887.9878 0 4 68645.0000 66887.9878 2.56% - 10s 0 2 66902.6064 0 4 68645.0000 66902.6064 2.54% - 10s H 1 1 68193.473522 66902.6064 1.89% 0.0 10s H 3 3 67800.772993 66989.2989 1.20% 116 11s H 4 4 67725.666667 66989.2989 1.09% 102 11s H 10 8 67503.111111 66989.2989 0.76% 56.6 11s H 13 9 67472.000000 66989.2989 0.72% 54.0 11s H 15 6 67191.000000 66989.2989 0.30% 48.6 11s H 20 7 67151.000000 66989.2989 0.24% 42.6 12s * 22 7 21 67135.000000 66989.2989 0.22% 41.7 12s * 24 4 2 67121.000000 67019.5311 0.15% 50.3 12s Cutting planes: Implied bound: 55 Explored 29 nodes (11219 simplex iterations) in 12.34 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 6.712100000000e+04, best bound 6.712100000000e+04, gap 0.0%