Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:10:29 2013 Optimize a model with 79157 rows, 6084 columns and 240318 nonzeros Presolve removed 7345 rows and 3111 columns Presolve time: 0.74s Presolved: 71812 rows, 2973 columns, 217610 nonzeros Variable types: 29 continuous, 2944 integer (2944 binary) Found heuristic solution: objective 131163.00000 Root relaxation: objective 1.038133e+05, 13577 iterations, 1.55 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 103813.300 0 6 131163.000 103813.300 20.9% - 2s H 0 0 103825.00000 103813.300 0.01% - 2s H 0 0 103823.00000 103813.300 0.01% - 2s Explored 0 nodes (13593 simplex iterations) in 2.56 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.038230000000e+05, best bound 1.038140000000e+05, gap 0.0087%