Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:38:19 2013 Optimize a model with 152193 rows, 9409 columns and 461041 nonzeros Presolve removed 9133 rows and 4757 columns Presolve time: 1.85s Presolved: 143060 rows, 4652 columns, 433310 nonzeros Variable types: 44 continuous, 4608 integer (4608 binary) Found heuristic solution: objective 193026.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 25654 1.2795571e+05 0.000000e+00 4.433498e+07 5s 51370 1.4091425e+05 0.000000e+00 0.000000e+00 9s 51370 1.4091425e+05 0.000000e+00 0.000000e+00 9s Root relaxation: objective 1.409142e+05, 51370 iterations, 9.08 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 140914.250 0 12 193026.000 140914.250 27.0% - 11s H 0 0 140936.00000 140914.250 0.02% - 11s H 0 0 140933.00000 140914.250 0.01% - 12s H 0 0 140930.00000 140914.250 0.01% - 12s 0 0 140914.250 0 11 140930.000 140914.250 0.01% - 13s 0 0 140914.250 0 14 140930.000 140914.250 0.01% - 14s H 0 0 140928.00000 140914.250 0.01% - 14s Explored 0 nodes (57695 simplex iterations) in 14.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.409280000000e+05, best bound 1.409150000000e+05, gap 0.0092%