Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:57:48 2013 Optimize a model with 1700 rows, 28100 columns and 58050 nonzeros Presolve removed 100 rows and 150 columns Presolve time: 0.32s Presolved: 1600 rows, 27950 columns, 55900 nonzeros Variable types: 27000 continuous, 950 integer (950 binary) Root relaxation: objective 2.208160e+05, 2912 iterations, 0.15 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 0 0 220872.852 0 3 - 220872.852 - - 0s 0 0 220885.471 0 4 - 220885.471 - - 0s 0 0 220936.312 0 3 - 220936.312 - - 0s 0 0 220961.353 0 4 - 220961.353 - - 0s 0 0 220963.450 0 4 - 220963.450 - - 1s 0 0 220965.302 0 3 - 220965.302 - - 1s 0 0 220965.302 0 3 - 220965.302 - - 1s 0 0 220967.549 0 4 - 220967.549 - - 1s 0 0 220967.655 0 4 - 220967.655 - - 1s 0 0 220968.261 0 3 - 220968.261 - - 1s 0 0 220969.122 0 3 - 220969.122 - - 1s 0 0 220969.805 0 3 - 220969.805 - - 1s 0 0 220970.936 0 3 - 220970.936 - - 1s 0 0 220970.977 0 3 - 220970.977 - - 1s 0 0 220971.064 0 3 - 220971.064 - - 1s 0 0 220971.464 0 3 - 220971.464 - - 2s 0 0 220971.638 0 3 - 220971.638 - - 2s 0 0 220973.227 0 3 - 220973.227 - - 2s 0 0 220974.076 0 3 - 220974.076 - - 2s 0 0 220974.900 0 3 - 220974.900 - - 2s 0 0 220975.282 0 3 - 220975.282 - - 2s 0 0 220975.282 0 3 - 220975.282 - - 2s 0 0 220975.282 0 3 - 220975.282 - - 2s 0 0 220975.282 0 3 - 220975.282 - - 2s 0 0 220975.282 0 3 - 220975.282 - - 2s 0 2 220988.877 0 3 - 220988.877 - - 4s 33 35 221497.678 32 1 - 221126.920 - 16.5 5s * 108 32 107 221619.99719 221126.920 0.22% 8.5 6s * 135 32 14 221582.51842 221173.180 0.18% 13.3 6s * 148 20 15 221476.88753 221231.726 0.11% 14.7 7s * 172 19 10 221476.58715 221313.153 0.07% 16.0 7s Cutting planes: Flow cover: 23 Explored 201 nodes (6764 simplex iterations) in 7.80 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.214765871511e+05, best bound 2.214590946471e+05, gap 0.0079%