Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:19:09 2013 Optimize a model with 170430 rows, 169130 columns and 676130 nonzeros Presolve removed 9503 rows and 0 columns Presolve time: 1.57s Presolved: 160927 rows, 169130 columns, 657124 nonzeros Variable types: 169000 continuous, 130 integer (130 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 19842 1.3816676e+05 2.881700e+04 0.000000e+00 5s 30019 1.9394527e+05 2.160495e+04 0.000000e+00 10s 36870 2.0508846e+05 6.361285e+03 0.000000e+00 15s 39571 2.0587686e+05 0.000000e+00 0.000000e+00 18s Root relaxation: objective 2.058769e+05, 39571 iterations, 18.50 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 205876.857 0 6 - 205876.857 - - 20s H 0 0 214434.00000 205876.857 3.99% - 22s H 0 0 206892.00000 205876.857 0.49% - 24s 0 0 205891.457 0 7 206892.000 205891.457 0.48% - 25s 0 0 205891.457 0 6 206892.000 205891.457 0.48% - 63s 0 0 205891.457 0 7 206892.000 205891.457 0.48% - 65s 0 2 205894.708 0 7 206892.000 205894.708 0.48% - 73s 2 5 206072.019 2 2 206892.000 206002.671 0.43% 856 75s 9 11 206240.795 8 2 206892.000 206002.671 0.43% 548 80s 20 17 206481.237 19 2 206892.000 206002.671 0.43% 377 85s H 21 15 206767.00000 206002.671 0.37% 359 85s * 26 15 25 206556.00000 206002.671 0.27% 316 86s 40 27 206300.932 14 1 206556.000 206019.923 0.26% 276 90s H 50 34 206519.00000 206019.923 0.24% 245 91s * 51 31 25 206424.00000 206019.923 0.20% 242 91s H 55 17 206347.00000 206019.923 0.16% 224 93s 58 22 206304.500 5 1 206347.000 206068.818 0.13% 243 95s * 59 15 6 206309.00000 206068.818 0.12% 241 95s Cutting planes: Gomory: 4 Flow cover: 2 Explored 78 nodes (79633 simplex iterations) in 97.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.063090000000e+05, best bound 2.063038205440e+05, gap 0.0025%