Gurobi 5.0.1 (linux64) logging started Fri Jan 18 04:02:50 2013 Optimize a model with 28 rows, 446 columns and 1288 nonzeros Presolve removed 22 rows and 26 columns Presolve time: 0.00s Presolved: 6 rows, 420 columns, 838 nonzeros Variable types: 420 continuous, 0 integer (0 binary) Root relaxation: objective 4.440467e+03, 6 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 4440.46714 0 1 - 4440.46714 - - 0s 0 2 4440.46714 0 1 - 4440.46714 - - 0s * 18 4 9 4458.9448858 4458.94489 0.0% 1.1 0s Explored 19 nodes (25 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.458944885800e+03, best bound 4.458944885800e+03, gap 0.0%