Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:42:26 2013 Optimize a model with 161799 rows, 9801 columns and 490050 nonzeros Presolve removed 8779 rows and 4941 columns Presolve time: 1.88s Presolved: 153020 rows, 4860 columns, 463858 nonzeros Variable types: 50 continuous, 4810 integer (4810 binary) Found heuristic solution: objective 222344.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 20700 1.3573162e+05 0.000000e+00 1.212288e+08 5s 50146 1.4563512e+05 0.000000e+00 5.189575e+07 10s 70055 1.5322848e+05 0.000000e+00 0.000000e+00 14s 70055 1.5322848e+05 0.000000e+00 0.000000e+00 14s Root relaxation: objective 1.532285e+05, 70055 iterations, 14.10 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 153228.476 0 22 222344.000 153228.476 31.1% - 16s H 0 0 153248.00000 153228.476 0.01% - 16s H 0 0 153243.00000 153228.476 0.01% - 16s Explored 0 nodes (70336 simplex iterations) in 16.93 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.532430000000e+05, best bound 1.532290000000e+05, gap 0.0091%