Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:22 2013 Optimize a model with 240 rows, 1710 columns and 5310 nonzeros Presolve removed 10 rows and 250 columns Presolve time: 0.00s Presolved: 230 rows, 1460 columns, 4910 nonzeros Variable types: 1410 continuous, 50 integer (50 binary) Root relaxation: objective 2.337984e+04, 150 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23379.8401 0 3 - 23379.8401 - - 0s 0 0 23388.6414 0 5 - 23388.6414 - - 0s 0 0 23388.6414 0 5 - 23388.6414 - - 0s H 0 0 23736.244530 23388.6414 1.46% - 0s 0 2 23470.7842 0 5 23736.2445 23470.7842 1.12% - 0s * 15 7 13 23639.667648 23499.3531 0.59% 7.9 0s * 23 5 6 23547.192768 23519.4087 0.12% 6.9 0s * 26 0 8 23527.197639 23527.1976 0.0% 6.2 0s Cutting planes: Gomory: 1 Flow cover: 1 Explored 27 nodes (443 simplex iterations) in 0.04 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.352719763919e+04, best bound 2.352719763919e+04, gap 0.0%