Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:59:40 2013 Optimize a model with 226650 rows, 225150 columns and 900150 nonzeros Presolve removed 6984 rows and 0 columns Presolve time: 2.31s Presolved: 219666 rows, 225150 columns, 886182 nonzeros Variable types: 225000 continuous, 150 integer (150 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20529 1.4562648e+05 1.983791e+04 0.000000e+00 5s 28403 1.8175410e+05 8.689654e+04 0.000000e+00 10s 35261 2.2549600e+05 1.593394e+04 0.000000e+00 15s 39579 2.3339012e+05 7.926267e+03 0.000000e+00 20s 42881 2.3653345e+05 7.498429e+03 0.000000e+00 25s 46183 2.3735904e+05 1.413813e+03 0.000000e+00 30s 46890 2.3738701e+05 0.000000e+00 0.000000e+00 32s Root relaxation: objective 2.373870e+05, 46890 iterations, 31.69 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 237387.015 0 3 - 237387.015 - - 34s H 0 0 242883.00000 237387.015 2.26% - 36s H 0 0 237918.00000 237387.015 0.22% - 38s 0 0 237387.015 0 3 237918.000 237387.015 0.22% - 40s 0 0 237387.015 0 3 237918.000 237387.015 0.22% - 52s 0 0 237387.015 0 3 237918.000 237387.015 0.22% - 53s 0 2 237387.942 0 3 237918.000 237387.942 0.22% - 57s H 1 1 237808.54054 237387.942 0.18% 0.0 58s 8 6 237594.536 7 1 237808.541 237543.662 0.11% 138 60s H 10 5 237730.00000 237543.662 0.08% 131 60s * 18 8 15 237718.00000 237543.662 0.07% 102 62s * 27 2 6 237681.00000 237649.500 0.01% 114 63s Cutting planes: Flow cover: 4 Explored 29 nodes (65952 simplex iterations) in 63.35 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.376810000000e+05, best bound 2.376621143477e+05, gap 0.0079%