Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:33:32 2013 Optimize a model with 142975 rows, 9025 columns and 433200 nonzeros Presolve removed 6895 rows and 4539 columns Presolve time: 1.70s Presolved: 136080 rows, 4486 columns, 412562 nonzeros Variable types: 47 continuous, 4439 integer (4439 binary) Found heuristic solution: objective 221870.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 33895 1.5376223e+05 0.000000e+00 9.665703e+06 5s 48453 1.6185367e+05 0.000000e+00 0.000000e+00 7s 48453 1.6185367e+05 0.000000e+00 0.000000e+00 7s Root relaxation: objective 1.618537e+05, 48453 iterations, 7.25 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 161853.667 0 13 221870.000 161853.667 27.1% - 9s H 0 0 161876.00000 161853.667 0.01% - 9s H 0 0 161869.00000 161853.667 0.01% - 9s Explored 0 nodes (48678 simplex iterations) in 9.78 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.618690000000e+05, best bound 1.618540000000e+05, gap 0.0093%