Gurobi 5.0.1 (linux64) logging started Wed Apr 24 01:23:03 2013 Optimize a model with 616 rows, 31416 columns and 62776 nonzeros Presolve time: 0.04s Presolved: 616 rows, 31416 columns, 62776 nonzeros Variable types: 31360 continuous, 56 integer (56 binary) Root relaxation: objective 5.839300e+04, 1273 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 58393.0018 0 9 - 58393.0018 - - 0s H 0 0 60065.000000 58393.0018 2.78% - 0s 0 0 59003.2242 0 4 60065.0000 59003.2242 1.77% - 0s H 0 0 59347.000000 59003.2242 0.58% - 0s 0 0 59097.8887 0 4 59347.0000 59097.8887 0.42% - 0s 0 0 59119.0635 0 5 59347.0000 59119.0635 0.38% - 0s 0 0 59120.2365 0 4 59347.0000 59120.2365 0.38% - 0s 0 0 59120.9417 0 4 59347.0000 59120.9417 0.38% - 0s 0 0 59124.0253 0 4 59347.0000 59124.0253 0.38% - 0s 0 0 59124.1916 0 4 59347.0000 59124.1916 0.38% - 0s 0 0 59124.4800 0 4 59347.0000 59124.4800 0.37% - 0s 0 0 59125.0401 0 4 59347.0000 59125.0401 0.37% - 0s H 0 0 59206.000000 59125.0401 0.14% - 0s 0 0 59125.0401 0 7 59206.0000 59125.0401 0.14% - 0s 0 0 59125.0401 0 3 59206.0000 59125.0401 0.14% - 0s 0 0 59127.0828 0 3 59206.0000 59127.0828 0.13% - 0s 0 0 59128.4106 0 3 59206.0000 59128.4106 0.13% - 0s 0 0 59128.4739 0 2 59206.0000 59128.4739 0.13% - 0s 0 0 59168.4903 0 3 59206.0000 59168.4903 0.06% - 0s 0 0 59196.6579 0 2 59206.0000 59196.6579 0.02% - 1s 0 0 59198.9412 0 2 59206.0000 59198.9412 0.01% - 1s 0 0 59199.1765 0 1 59206.0000 59199.1765 0.01% - 1s 0 1 59202.0000 0 1 59206.0000 59202.0000 0.01% - 1s Cutting planes: Implied bound: 43 Flow cover: 4 Explored 1 nodes (2562 simplex iterations) in 1.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 5.920600000000e+04, best bound 5.920200000000e+04, gap 0.0068%