Gurobi 5.0.1 (linux64) logging started Fri Jan 18 05:21:30 2013 Optimize a model with 1400 rows, 120300 columns and 260400 nonzeros Presolve removed 100 rows and 100 columns Presolve time: 0.19s Presolved: 1300 rows, 120200 columns, 240300 nonzeros Variable types: 120200 continuous, 0 integer (0 binary) Root relaxation: objective 8.654105e+05, 9864 iterations, 0.81 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 865410.545 0 2 - 865410.545 - - 1s 0 2 865410.545 0 2 - 865410.545 - - 2s 17 19 870711.299 9 2 - 866564.739 - 248 5s * 31 15 16 867835.85010 866564.739 0.15% 208 6s * 105 3 27 866849.82663 866599.521 0.03% 76.0 9s Explored 107 nodes (17850 simplex iterations) in 9.09 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.668498266279e+05, best bound 8.667706496003e+05, gap 0.0091%