Gurobi 5.0.1 (linux64) logging started Mon Feb 4 20:14:53 2013 Optimize a model with 562625 rows, 22500 columns and 1698750 nonzeros Presolve removed 19868 rows and 11336 columns (presolve time = 5s) ... Presolve removed 24023 rows and 11342 columns Presolve time: 7.96s Presolved: 538602 rows, 11158 columns, 1626241 nonzeros Variable types: 71 continuous, 11087 integer (11087 binary) Found heuristic solution: objective 523989.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 9648 3.2484576e+05 0.000000e+00 4.551921e+09 6s 18224 3.2685228e+05 0.000000e+00 2.223213e+09 11s 25728 3.2924692e+05 0.000000e+00 4.858432e+08 15s 34304 3.3069239e+05 0.000000e+00 4.936724e+08 20s 45024 3.3254078e+05 0.000000e+00 5.771417e+08 25s 57888 3.3665793e+05 0.000000e+00 3.677277e+08 30s 69680 3.4108024e+05 0.000000e+00 2.200806e+09 35s 83616 3.4611760e+05 0.000000e+00 1.032622e+09 40s 96480 3.5149489e+05 0.000000e+00 7.158268e+07 45s 110416 3.5785784e+05 0.000000e+00 4.933551e+07 50s 125424 3.6542457e+05 0.000000e+00 4.872814e+07 55s 140432 3.7302650e+05 0.000000e+00 1.368023e+07 60s 154368 3.7980951e+05 0.000000e+00 5.570510e+06 65s 164016 3.8411686e+05 0.000000e+00 6.662393e+05 70s 166880 3.8417586e+05 0.000000e+00 0.000000e+00 74s 166880 3.8417586e+05 0.000000e+00 0.000000e+00 74s Root relaxation: objective 3.841759e+05, 166880 iterations, 73.67 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 384175.857 0 24 523989.000 384175.857 26.7% - 84s H 0 0 384203.00000 384175.857 0.01% - 85s Explored 0 nodes (167413 simplex iterations) in 85.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.842030000000e+05, best bound 3.841760000000e+05, gap 0.0070%