Gurobi 5.0.1 (linux64) logging started Wed Apr 24 11:18:09 2013 Optimize a model with 170430 rows, 169130 columns and 676130 nonzeros Presolve removed 5945 rows and 0 columns Presolve time: 1.56s Presolved: 164485 rows, 169130 columns, 664240 nonzeros Variable types: 169000 continuous, 130 integer (130 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 19577 1.3338955e+05 2.817984e+04 0.000000e+00 5s 27605 1.6965416e+05 1.203914e+04 0.000000e+00 10s 32511 1.7392915e+05 4.156157e+02 0.000000e+00 15s 33116 1.7397532e+05 0.000000e+00 0.000000e+00 16s Root relaxation: objective 1.739753e+05, 33116 iterations, 16.17 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 173975.317 0 2 - 173975.317 - - 18s H 0 0 178541.00000 173975.317 2.56% - 19s 0 0 173978.678 0 3 178541.000 173978.678 2.56% - 21s 0 0 173978.888 0 3 178541.000 173978.888 2.56% - 23s 0 0 173978.888 0 3 178541.000 173978.888 2.56% - 24s 0 2 173988.165 0 3 178541.000 173988.165 2.55% - 32s 2 4 174383.765 1 4 178541.000 174158.956 2.45% 1321 37s 4 6 174355.688 3 3 178541.000 174221.328 2.42% 1155 40s H 5 5 178048.72828 174221.328 2.15% 924 42s H 7 7 177765.42466 174274.669 1.96% 964 43s H 8 8 175157.60606 174274.669 0.50% 844 44s 9 11 174414.063 7 1 175157.606 174274.669 0.50% 813 45s * 17 9 14 174439.00000 174274.669 0.09% 494 47s 27 8 174420.571 5 2 174439.000 174398.575 0.02% 386 50s Cutting planes: Gomory: 1 Flow cover: 4 Explored 40 nodes (44779 simplex iterations) in 51.39 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.744390000000e+05, best bound 1.744217483871e+05, gap 0.0099%