Gurobi 5.0.1 (linux64) logging started Wed Apr 24 07:40:34 2013 Optimize a model with 91295 rows, 90345 columns and 361095 nonzeros Presolve removed 6638 rows and 0 columns Presolve time: 0.67s Presolved: 84657 rows, 90345 columns, 347819 nonzeros Variable types: 90250 continuous, 95 integer (95 binary) Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 18654 1.1807217e+05 2.832879e+03 0.000000e+00 5s 20551 1.1947876e+05 0.000000e+00 0.000000e+00 6s Root relaxation: objective 1.194788e+05, 20551 iterations, 6.22 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 119478.761 0 4 - 119478.761 - - 7s H 0 0 124320.00000 119478.761 3.89% - 7s 0 0 119487.504 0 7 124320.000 119487.504 3.89% - 8s 0 0 119487.535 0 7 124320.000 119487.535 3.89% - 9s H 0 0 122470.07467 119487.535 2.44% - 12s H 0 0 121526.00000 119487.535 1.68% - 13s 0 2 119490.793 0 7 121526.000 119490.793 1.67% - 15s H 9 9 120852.62500 119658.171 0.99% 264 17s H 16 14 120764.00000 119658.171 0.92% 200 18s H 20 12 120454.00000 119658.171 0.66% 168 19s H 23 10 120179.00000 119658.171 0.43% 155 19s 25 12 119991.111 23 1 120179.000 119658.171 0.43% 144 20s * 27 8 25 120011.00000 119658.171 0.29% 137 20s H 35 14 119996.00000 119659.297 0.28% 122 21s * 39 10 13 119830.00000 119659.297 0.14% 115 21s Cutting planes: Gomory: 3 Flow cover: 2 Explored 56 nodes (26275 simplex iterations) in 22.36 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.198300000000e+05, best bound 1.198300000000e+05, gap 0.0%