Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:57 2013 Optimize a model with 280 rows, 4460 columns and 9280 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.01s Presolved: 260 rows, 4440 columns, 8860 nonzeros Variable types: 4440 continuous, 0 integer (0 binary) Root relaxation: objective 3.573401e+04, 389 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 35734.0139 0 3 - 35734.0139 - - 0s H 0 0 36208.602569 35734.0139 1.31% - 0s 0 2 35734.0139 0 3 36208.6026 35734.0139 1.31% - 0s * 28 8 12 36179.345438 36014.0237 0.46% 9.5 0s * 31 1 10 36173.352826 36171.9779 0.00% 10.1 0s Explored 32 nodes (701 simplex iterations) in 0.08 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.617335282586e+04, best bound 3.617197789071e+04, gap 0.0038%