Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:01:10 2013 Optimize a model with 1200 rows, 26400 columns and 57950 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.08s Presolved: 1150 rows, 26350 columns, 56900 nonzeros Variable types: 26100 continuous, 250 integer (250 binary) Root relaxation: objective 1.749223e+05, 2123 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 174922.321 0 6 - 174922.321 - - 0s 0 0 174945.374 0 6 - 174945.374 - - 0s 0 0 174955.711 0 6 - 174955.711 - - 0s 0 0 174957.192 0 6 - 174957.192 - - 0s 0 0 174957.192 0 6 - 174957.192 - - 0s 0 0 174957.647 0 6 - 174957.647 - - 0s 0 0 174959.050 0 6 - 174959.050 - - 0s 0 0 174959.050 0 6 - 174959.050 - - 0s 0 0 174959.240 0 7 - 174959.240 - - 0s 0 0 174959.312 0 8 - 174959.312 - - 0s 0 0 174959.312 0 8 - 174959.312 - - 0s H 0 0 178511.00724 174959.312 1.99% - 0s 0 2 174960.857 0 8 178511.007 174960.857 1.99% - 1s H 27 18 177163.37382 175269.402 1.07% 22.8 1s * 45 24 43 176731.92360 175269.402 0.83% 17.4 1s H 108 45 176622.81492 175588.191 0.59% 18.7 2s * 137 67 41 176564.29918 175588.191 0.55% 15.4 2s * 162 42 18 176471.92204 175692.879 0.44% 14.8 2s * 176 25 24 176386.87334 175992.437 0.22% 15.6 2s * 177 9 24 176324.14831 175992.437 0.19% 15.6 2s * 184 10 29 176305.85915 175992.437 0.18% 15.1 2s * 203 1 13 176208.61401 176198.977 0.01% 14.7 2s Cutting planes: Flow cover: 13 Explored 204 nodes (6184 simplex iterations) in 2.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.762086140087e+05, best bound 1.761989774784e+05, gap 0.0055%