Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:36:09 2013 Optimize a model with 197540 rows, 196140 columns and 784140 nonzeros Presolve removed 8981 rows and 0 columns Presolve time: 1.93s Presolved: 188559 rows, 196140 columns, 766178 nonzeros Variable types: 196000 continuous, 140 integer (140 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20861 1.4381176e+05 3.658403e+04 0.000000e+00 5s 30027 1.9171915e+05 7.985141e+04 0.000000e+00 10s 40727 2.6032266e+05 9.522499e+03 0.000000e+00 15s 45704 2.6730519e+05 5.899378e+03 0.000000e+00 20s 49733 2.6982542e+05 2.305816e+03 0.000000e+00 25s 51949 2.7015574e+05 0.000000e+00 0.000000e+00 28s Root relaxation: objective 2.701557e+05, 51949 iterations, 28.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 270155.742 0 1 - 270155.742 - - 30s H 0 0 270326.00000 270155.742 0.06% - 31s 0 0 270155.800 0 2 270326.000 270155.800 0.06% - 32s 0 0 270155.800 0 1 270326.000 270155.800 0.06% - 46s 0 0 270155.800 0 2 270326.000 270155.800 0.06% - 46s 0 2 270157.369 0 2 270326.000 270157.369 0.06% - 50s * 8 4 6 270296.00000 270190.281 0.04% 112 51s Cutting planes: Gomory: 1 Flow cover: 1 Explored 14 nodes (68556 simplex iterations) in 52.83 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.702960000000e+05, best bound 2.702960000000e+05, gap 0.0%