Gurobi 5.0.1 (linux64) logging started Fri Jan 18 01:53:36 2013 Optimize a model with 1300 rows, 27950 columns and 71100 nonzeros Presolve removed 50 rows and 50 columns Presolve time: 0.10s Presolved: 1250 rows, 27900 columns, 68550 nonzeros Variable types: 27600 continuous, 300 integer (300 binary) Root relaxation: objective 1.824192e+05, 2072 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 182419.206 0 3 - 182419.206 - - 0s 0 0 182443.252 0 6 - 182443.252 - - 0s 0 0 182443.686 0 6 - 182443.686 - - 0s 0 0 182445.628 0 7 - 182445.628 - - 0s 0 0 182448.782 0 7 - 182448.782 - - 0s 0 0 182449.617 0 7 - 182449.617 - - 0s 0 0 182449.617 0 6 - 182449.617 - - 0s 0 2 182461.307 0 6 - 182461.307 - - 1s * 33 15 30 182904.60862 182518.437 0.21% 18.2 2s * 34 14 29 182902.50807 182518.437 0.21% 17.7 2s * 36 12 28 182897.08109 182518.437 0.21% 16.8 2s H 39 8 182892.74908 182872.197 0.01% 15.5 2s Cutting planes: Flow cover: 3 Explored 40 nodes (3013 simplex iterations) in 2.57 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.828927490766e+05, best bound 1.828750155686e+05, gap 0.0097%