Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:08:32 2013 Optimize a model with 73226 rows, 5776 columns and 222376 nonzeros Presolve removed 5298 rows and 2930 columns Presolve time: 0.62s Presolved: 67928 rows, 2846 columns, 205899 nonzeros Variable types: 29 continuous, 2817 integer (2817 binary) Found heuristic solution: objective 118069.00000 Root relaxation: objective 8.913630e+04, 18242 iterations, 1.79 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 89136.3013 0 12 118069.000 89136.3013 24.5% - 2s H 0 0 89154.000000 89136.3013 0.02% - 2s H 0 0 89147.000000 89136.3013 0.01% - 2s 0 0 89136.9595 0 23 89147.0000 89136.9595 0.01% - 2s 0 0 89136.9595 0 15 89147.0000 89136.9595 0.01% - 3s H 0 0 89145.000000 89136.9595 0.01% - 3s Explored 0 nodes (19962 simplex iterations) in 3.27 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.914500000000e+04, best bound 8.913700000000e+04, gap 0.0090%