Gurobi 5.0.1 (linux64) logging started Fri Jan 18 02:46:13 2013 Optimize a model with 28 rows, 275 columns and 2035 nonzeros Presolve removed 12 rows and 68 columns Presolve time: 0.00s Presolved: 16 rows, 207 columns, 1812 nonzeros Variable types: 200 continuous, 7 integer (7 binary) Found heuristic solution: objective 3887.5943648 Root relaxation: objective 3.887591e+03, 10 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3887.59079 0 1 3887.59436 3887.59079 0.00% - 0s Explored 0 nodes (10 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.887594364835e+03, best bound 3.887590790224e+03, gap 0.0001%