Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:53:23 2013 Optimize a model with 1300 rows, 27950 columns and 71100 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.11s Presolved: 1250 rows, 27900 columns, 68550 nonzeros Variable types: 27600 continuous, 300 integer (300 binary) Root relaxation: objective 1.650739e+05, 2432 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 165073.856 0 6 - 165073.856 - - 0s 0 0 165099.558 0 9 - 165099.558 - - 0s 0 0 165099.695 0 9 - 165099.695 - - 0s 0 0 165102.728 0 9 - 165102.728 - - 0s 0 0 165102.857 0 9 - 165102.857 - - 0s 0 0 165105.071 0 6 - 165105.071 - - 0s 0 0 165105.090 0 7 - 165105.090 - - 0s 0 0 165105.103 0 7 - 165105.103 - - 0s 0 0 165105.103 0 7 - 165105.103 - - 0s 0 0 165105.103 0 7 - 165105.103 - - 1s 0 2 165135.962 0 7 - 165135.962 - - 2s * 16 6 16 165621.92658 165480.086 0.09% 24.7 2s Cutting planes: Flow cover: 12 Explored 23 nodes (3813 simplex iterations) in 2.61 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.656219265842e+05, best bound 1.656067921769e+05, gap 0.0091%