Gurobi 5.0.1 (linux64) logging started Wed Apr 24 07:20:01 2013 Optimize a model with 89394 rows, 88454 columns and 353534 nonzeros Presolve removed 2457 rows and 0 columns Presolve time: 0.63s Presolved: 86937 rows, 88454 columns, 348620 nonzeros Variable types: 88360 continuous, 94 integer (94 binary) Root relaxation: objective 1.017511e+05, 15476 iterations, 3.86 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 101751.136 0 5 - 101751.136 - - 4s H 0 0 104616.00000 101751.136 2.74% - 5s H 0 0 102050.00000 101751.136 0.29% - 5s 0 0 101752.856 0 6 102050.000 101752.856 0.29% - 6s 0 0 101752.856 0 5 102050.000 101752.856 0.29% - 10s 0 0 101752.856 0 6 102050.000 101752.856 0.29% - 10s 0 0 101752.856 0 6 102050.000 101752.856 0.29% - 11s 0 0 101752.856 0 6 102050.000 101752.856 0.29% - 11s 0 0 101757.552 0 4 102050.000 101757.552 0.29% - 12s 0 2 101762.680 0 4 102050.000 101762.680 0.28% - 14s 7 5 cutoff 6 102050.000 101889.606 0.16% 130 15s * 9 5 8 102007.00000 101889.606 0.12% 109 15s * 21 1 6 101992.00000 101972.222 0.02% 96.8 15s Cutting planes: Gomory: 2 Flow cover: 4 Explored 23 nodes (24643 simplex iterations) in 16.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.019920000000e+05, best bound 1.019920000000e+05, gap 0.0%