Gurobi 5.0.1 (linux64) logging started Wed Apr 24 04:12:32 2013 Optimize a model with 69803 rows, 68973 columns and 275643 nonzeros Presolve removed 4278 rows and 0 columns Presolve time: 0.46s Presolved: 65525 rows, 68973 columns, 267087 nonzeros Variable types: 68890 continuous, 83 integer (83 binary) Root relaxation: objective 1.008176e+05, 16414 iterations, 3.90 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 100817.601 0 3 - 100817.601 - - 4s H 0 0 101219.00000 100817.601 0.40% - 4s H 0 0 101048.00000 100817.601 0.23% - 5s 0 0 100819.010 0 5 101048.000 100819.010 0.23% - 5s 0 0 100819.010 0 3 101048.000 100819.010 0.23% - 7s 0 0 100819.010 0 5 101048.000 100819.010 0.23% - 7s 0 0 100819.010 0 5 101048.000 100819.010 0.23% - 7s 0 2 100826.762 0 5 101048.000 100826.762 0.22% - 9s * 9 1 6 101029.00000 100955.184 0.07% 42.4 9s Cutting planes: Gomory: 2 Flow cover: 6 Explored 11 nodes (21902 simplex iterations) in 9.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.010290000000e+05, best bound 1.010290000000e+05, gap 0.0%