Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:23:18 2013 Optimize a model with 117569 rows, 7921 columns and 356445 nonzeros Presolve removed 9427 rows and 4041 columns Presolve time: 1.26s Presolved: 108142 rows, 3880 columns, 326919 nonzeros Variable types: 29 continuous, 3851 integer (3851 binary) Found heuristic solution: objective 200083.00000 Root relaxation: objective 1.673665e+05, 17167 iterations, 2.36 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 167366.474 0 8 200083.000 167366.474 16.4% - 4s H 0 0 167376.00000 167366.474 0.01% - 4s Explored 0 nodes (17250 simplex iterations) in 4.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.673760000000e+05, best bound 1.673670000000e+05, gap 0.0054%