Gurobi 5.0.1 (linux64) logging started Thu Jan 17 23:46:12 2013 Optimize a model with 1050 rows, 25650 columns and 52000 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.17s Presolved: 950 rows, 25550 columns, 51650 nonzeros Variable types: 25350 continuous, 200 integer (200 binary) Root relaxation: objective 2.208160e+05, 2007 iterations, 0.07 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 243352.68555 220815.985 9.26% - 0s H 0 0 228505.19903 220815.985 3.37% - 0s 0 0 220898.913 0 2 228505.199 220898.913 3.33% - 0s 0 0 220942.997 0 3 228505.199 220942.997 3.31% - 0s 0 0 220949.029 0 2 228505.199 220949.029 3.31% - 0s 0 0 220949.029 0 2 228505.199 220949.029 3.31% - 0s 0 0 220952.804 0 3 228505.199 220952.804 3.31% - 0s 0 0 220952.866 0 3 228505.199 220952.866 3.31% - 0s 0 0 220958.307 0 3 228505.199 220958.307 3.30% - 0s 0 0 220958.307 0 3 228505.199 220958.307 3.30% - 0s 0 0 220958.307 0 3 228505.199 220958.307 3.30% - 0s 0 0 220958.942 0 3 228505.199 220958.942 3.30% - 1s 0 0 220960.630 0 3 228505.199 220960.630 3.30% - 1s 0 0 220961.121 0 3 228505.199 220961.121 3.30% - 1s 0 0 220962.318 0 3 228505.199 220962.318 3.30% - 1s 0 0 220963.448 0 3 228505.199 220963.448 3.30% - 1s 0 0 220964.193 0 3 228505.199 220964.193 3.30% - 1s 0 0 220966.907 0 3 228505.199 220966.907 3.30% - 1s 0 0 220967.517 0 3 228505.199 220967.517 3.30% - 1s 0 0 220970.055 0 3 228505.199 220970.055 3.30% - 1s 0 0 220970.801 0 3 228505.199 220970.801 3.30% - 1s 0 0 220972.003 0 4 228505.199 220972.003 3.30% - 1s 0 0 220973.490 0 4 228505.199 220973.490 3.30% - 1s 0 0 220974.132 0 4 228505.199 220974.132 3.30% - 1s 0 0 220974.253 0 4 228505.199 220974.253 3.30% - 1s 0 0 220974.253 0 4 228505.199 220974.253 3.30% - 1s 0 2 220979.903 0 4 228505.199 220979.903 3.29% - 2s H 27 11 221699.43453 221110.315 0.27% 25.5 2s * 63 7 3 221606.00454 221179.540 0.19% 25.8 2s * 66 0 14 221466.25414 221466.254 0.0% 25.1 3s Cutting planes: Flow cover: 20 Explored 67 nodes (4686 simplex iterations) in 3.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214662541417e+05, best bound 2.214662541417e+05, gap 0.0%