Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:21:43 2013 Optimize a model with 170430 rows, 169130 columns and 676130 nonzeros Presolve removed 6871 rows and 0 columns Presolve time: 1.57s Presolved: 163559 rows, 169130 columns, 662388 nonzeros Variable types: 169000 continuous, 130 integer (130 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 19421 1.2461730e+05 3.692706e+04 0.000000e+00 5s 27784 1.5573057e+05 6.650412e+04 0.000000e+00 10s 34222 1.8164070e+05 6.264529e+03 0.000000e+00 15s 39582 1.8630694e+05 4.959692e+02 0.000000e+00 20s 40028 1.8633866e+05 0.000000e+00 0.000000e+00 21s Root relaxation: objective 1.863387e+05, 40028 iterations, 20.99 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 186338.657 0 4 - 186338.657 - - 23s H 0 0 198352.00000 186338.657 6.06% - 24s H 0 0 187070.00000 186338.657 0.39% - 26s 0 0 186342.502 0 6 187070.000 186342.502 0.39% - 28s 0 0 186342.502 0 4 187070.000 186342.502 0.39% - 40s 0 0 186342.510 0 7 187070.000 186342.510 0.39% - 41s 0 0 186342.510 0 7 187070.000 186342.510 0.39% - 42s 0 2 186361.813 0 7 187070.000 186361.813 0.38% - 48s 2 4 186524.550 1 5 187070.000 186524.550 0.29% 570 50s H 12 6 186868.73913 186532.884 0.18% 167 52s H 13 6 186862.06667 186532.884 0.18% 164 52s H 14 5 186836.47368 186532.884 0.16% 155 52s * 15 5 14 186767.00000 186532.884 0.13% 150 52s 38 5 186739.106 10 2 186767.000 186723.000 0.02% 122 55s Cutting planes: Gomory: 3 Flow cover: 8 Explored 45 nodes (61626 simplex iterations) in 55.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.867670000000e+05, best bound 1.867670000000e+05, gap 0.0%