Gurobi 5.0.1 (linux64) logging started Fri Jan 18 07:33:42 2013 Optimize a model with 10140 rows, 31020 columns and 82010 nonzeros Presolve removed 20 rows and 30 columns Presolve time: 0.65s Presolved: 10120 rows, 30990 columns, 61980 nonzeros Variable types: 21000 continuous, 9990 integer (9990 binary) Root relaxation: objective 2.387367e+04, 253 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 23873.6700 0 1 - 23873.6700 - - 0s 0 0 23873.8195 0 2 - 23873.8195 - - 1s 0 0 23873.8243 0 2 - 23873.8243 - - 1s 0 0 23873.8243 0 2 - 23873.8243 - - 1s H 0 0 24456.004254 23873.8243 2.38% - 2s H 0 0 23952.563300 23873.8243 0.33% - 3s 0 1 23882.9755 0 2 23952.5633 23882.9755 0.29% - 3s 54 1 23923.1372 54 1 23952.5633 23923.1372 0.12% 1.6 5s Cutting planes: Gomory: 1 Flow cover: 2 Explored 102 nodes (2602 simplex iterations) in 5.75 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.395256329994e+04, best bound 2.395044269851e+04, gap 0.0089%