Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:18:00 2013 Optimize a model with 800 rows, 25350 columns and 50950 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.14s Presolved: 750 rows, 25300 columns, 50750 nonzeros Variable types: 25250 continuous, 50 integer (50 binary) Root relaxation: objective 2.208160e+05, 1664 iterations, 0.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 220815.985 0 4 - 220815.985 - - 0s H 0 0 227372.29867 220815.985 2.88% - 0s 0 0 220898.913 0 2 227372.299 220898.913 2.85% - 0s 0 0 220949.872 0 3 227372.299 220949.872 2.82% - 0s 0 0 220951.106 0 3 227372.299 220951.106 2.82% - 0s 0 0 220954.293 0 3 227372.299 220954.293 2.82% - 0s 0 0 220954.293 0 3 227372.299 220954.293 2.82% - 0s 0 0 220957.449 0 3 227372.299 220957.449 2.82% - 0s 0 0 220957.449 0 3 227372.299 220957.449 2.82% - 0s 0 0 220958.423 0 3 227372.299 220958.423 2.82% - 0s 0 0 220961.087 0 3 227372.299 220961.087 2.82% - 1s 0 0 220962.035 0 3 227372.299 220962.035 2.82% - 1s 0 0 220963.088 0 3 227372.299 220963.088 2.82% - 1s 0 0 220963.669 0 3 227372.299 220963.669 2.82% - 1s 0 0 220966.305 0 3 227372.299 220966.305 2.82% - 1s 0 0 220966.644 0 3 227372.299 220966.644 2.82% - 1s 0 0 220968.015 0 3 227372.299 220968.015 2.82% - 1s 0 0 220970.480 0 3 227372.299 220970.480 2.82% - 1s 0 0 220971.372 0 4 227372.299 220971.372 2.82% - 1s 0 0 220971.461 0 4 227372.299 220971.461 2.82% - 1s 0 0 220972.700 0 4 227372.299 220972.700 2.81% - 1s 0 0 220974.443 0 4 227372.299 220974.443 2.81% - 1s 0 0 220974.645 0 4 227372.299 220974.645 2.81% - 1s 0 0 220975.244 0 4 227372.299 220975.244 2.81% - 2s 0 0 220976.323 0 3 227372.299 220976.323 2.81% - 2s 0 0 220977.073 0 3 227372.299 220977.073 2.81% - 2s 0 0 220977.073 0 3 227372.299 220977.073 2.81% - 2s 0 0 220977.442 0 3 227372.299 220977.442 2.81% - 2s 0 0 220977.630 0 3 227372.299 220977.630 2.81% - 2s 0 0 220977.630 0 3 227372.299 220977.630 2.81% - 2s 0 0 220977.952 0 3 227372.299 220977.952 2.81% - 2s 0 0 220978.546 0 3 227372.299 220978.546 2.81% - 2s 0 0 220979.122 0 3 227372.299 220979.122 2.81% - 2s 0 0 220980.300 0 3 227372.299 220980.300 2.81% - 2s 0 0 220980.461 0 3 227372.299 220980.461 2.81% - 2s 0 0 220980.490 0 3 227372.299 220980.490 2.81% - 3s 0 0 220980.490 0 3 227372.299 220980.490 2.81% - 3s 0 0 220980.490 0 3 227372.299 220980.490 2.81% - 3s 0 2 220993.348 0 3 227372.299 220993.348 2.81% - 3s * 13 6 13 221424.70359 221137.677 0.13% 34.2 3s Cutting planes: Flow cover: 23 Explored 22 nodes (4114 simplex iterations) in 4.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214247035946e+05, best bound 2.214092884312e+05, gap 0.0070%