Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:11:03 2013 Optimize a model with 469 rows, 196 columns and 1470 nonzeros Presolve removed 198 rows and 110 columns Presolve time: 0.00s Presolved: 271 rows, 86 columns, 857 nonzeros Variable types: 4 continuous, 82 integer (82 binary) Found heuristic solution: objective 3035.0000000 Root relaxation: objective 2.537974e+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 2537.97368 0 4 3035.00000 2537.97368 16.4% - 0s H 0 0 2552.0000000 2537.97368 0.55% - 0s 0 0 2542.54839 0 5 2552.00000 2542.54839 0.37% - 0s 0 0 2542.54839 0 4 2552.00000 2542.54839 0.37% - 0s H 0 0 2547.0000000 2542.54839 0.17% - 0s 0 0 2542.54839 0 5 2547.00000 2542.54839 0.17% - 0s 0 0 2542.73529 0 10 2547.00000 2542.73529 0.17% - 0s 0 1 2543.23191 0 10 2547.00000 2543.23191 0.15% - 0s Explored 5 nodes (46 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.547000000000e+03, best bound 2.547000000000e+03, gap 0.0%