Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:11:09 2013 Optimize a model with 82239 rows, 6241 columns and 249640 nonzeros Presolve removed 5593 rows and 3153 columns Presolve time: 0.78s Presolved: 76646 rows, 3088 columns, 232974 nonzeros Variable types: 40 continuous, 3048 integer (3048 binary) Found heuristic solution: objective 130174.00000 Root relaxation: objective 9.793526e+04, 29856 iterations, 3.68 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 97935.2557 0 12 130174.000 97935.2557 24.8% - 4s H 0 0 97952.000000 97935.2557 0.02% - 4s H 0 0 97948.000000 97935.2557 0.01% - 4s 0 0 97935.6818 0 16 97948.0000 97935.6818 0.01% - 5s 0 0 97935.6818 0 13 97948.0000 97935.6818 0.01% - 5s H 0 0 97946.000000 97935.6818 0.01% - 5s 0 0 97936.0312 0 26 97946.0000 97936.0312 0.01% - 5s 0 2 97936.2775 0 26 97946.0000 97936.2775 0.01% - 5s Cutting planes: Gomory: 1 MIR: 7 Explored 1 nodes (33047 simplex iterations) in 5.88 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.794600000000e+04, best bound 9.793700000000e+04, gap 0.0092%