Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:19:53 2013 Optimize a model with 700 rows, 25250 columns and 50500 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.07s Presolved: 800 rows, 25300 columns, 50650 nonzeros Variable types: 25200 continuous, 100 integer (100 binary) Root relaxation: objective 2.208160e+05, 1903 iterations, 0.06 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220815.985 0 8 - 220815.985 - - 0s H 0 0 233334.06247 220815.985 5.36% - 0s H 0 0 227372.29867 220815.985 2.88% - 0s 0 0 220899.042 0 4 227372.299 220899.042 2.85% - 0s 0 0 220938.865 0 4 227372.299 220938.865 2.83% - 0s 0 0 220942.046 0 6 227372.299 220942.046 2.83% - 0s 0 0 220944.382 0 4 227372.299 220944.382 2.83% - 0s 0 0 220951.868 0 6 227372.299 220951.868 2.82% - 0s 0 0 220953.786 0 6 227372.299 220953.786 2.82% - 0s 0 0 220953.830 0 6 227372.299 220953.830 2.82% - 0s 0 0 220955.289 0 6 227372.299 220955.289 2.82% - 0s 0 0 220957.454 0 6 227372.299 220957.454 2.82% - 0s 0 0 220957.833 0 6 227372.299 220957.833 2.82% - 0s 0 0 220959.980 0 6 227372.299 220959.980 2.82% - 1s 0 0 220960.832 0 6 227372.299 220960.832 2.82% - 1s 0 0 220961.303 0 6 227372.299 220961.303 2.82% - 1s 0 0 220963.409 0 6 227372.299 220963.409 2.82% - 1s 0 0 220967.444 0 6 227372.299 220967.444 2.82% - 1s 0 0 220968.818 0 6 227372.299 220968.818 2.82% - 1s 0 0 220970.201 0 6 227372.299 220970.201 2.82% - 1s 0 0 220970.891 0 6 227372.299 220970.891 2.82% - 1s 0 0 220971.418 0 6 227372.299 220971.418 2.82% - 1s 0 0 220971.434 0 6 227372.299 220971.434 2.82% - 1s 0 0 220971.671 0 6 227372.299 220971.671 2.82% - 1s 0 0 220971.909 0 6 227372.299 220971.909 2.81% - 1s 0 0 220972.172 0 6 227372.299 220972.172 2.81% - 1s 0 0 220973.492 0 6 227372.299 220973.492 2.81% - 1s 0 0 220973.889 0 8 227372.299 220973.889 2.81% - 1s 0 0 220976.513 0 8 227372.299 220976.513 2.81% - 1s 0 0 220976.742 0 8 227372.299 220976.742 2.81% - 1s 0 0 220977.399 0 8 227372.299 220977.399 2.81% - 1s 0 0 220978.047 0 6 227372.299 220978.047 2.81% - 1s 0 0 220978.047 0 6 227372.299 220978.047 2.81% - 1s 0 0 220978.328 0 6 227372.299 220978.328 2.81% - 2s 0 0 220978.655 0 6 227372.299 220978.655 2.81% - 2s 0 0 220978.912 0 6 227372.299 220978.912 2.81% - 2s 0 0 220978.915 0 6 227372.299 220978.915 2.81% - 2s 0 0 220979.018 0 6 227372.299 220979.018 2.81% - 2s 0 0 220979.796 0 6 227372.299 220979.796 2.81% - 2s 0 0 220980.128 0 6 227372.299 220980.128 2.81% - 2s 0 0 220980.128 0 6 227372.299 220980.128 2.81% - 2s 0 0 220980.128 0 6 227372.299 220980.128 2.81% - 2s 0 0 220980.128 0 6 227372.299 220980.128 2.81% - 2s 0 0 220980.128 0 6 227372.299 220980.128 2.81% - 2s 0 0 220980.128 0 6 227372.299 220980.128 2.81% - 2s 0 2 220991.608 0 6 227372.299 220991.608 2.81% - 2s * 13 12 11 225739.63953 221156.607 2.03% 94.0 3s * 18 13 15 225208.39217 221156.607 1.80% 75.0 3s * 20 12 17 225207.36955 221156.607 1.80% 72.2 3s * 32 13 11 221877.00555 221190.661 0.31% 67.3 3s * 49 9 6 221582.18715 221284.901 0.13% 58.7 4s H 54 2 221475.85087 221370.961 0.05% 55.9 4s * 55 1 12 221424.70359 221424.704 0.0% 55.7 4s Cutting planes: Flow cover: 21 Explored 56 nodes (6444 simplex iterations) in 4.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214247035946e+05, best bound 2.214247035946e+05, gap 0.0%