Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:35:58 2013 Optimize a model with 147536 rows, 9216 columns and 446976 nonzeros Presolve removed 8360 rows and 4650 columns Presolve time: 1.66s Presolved: 139176 rows, 4566 columns, 421897 nonzeros Variable types: 47 continuous, 4519 integer (4519 binary) Found heuristic solution: objective 199716.00000 Root simplex log... Iteration Objective Primal Inf. Dual Inf. Time 30182 1.3375913e+05 0.000000e+00 3.488245e+07 5s 47414 1.4267856e+05 0.000000e+00 0.000000e+00 8s 47414 1.4267856e+05 0.000000e+00 0.000000e+00 8s Root relaxation: objective 1.426786e+05, 47414 iterations, 7.66 seconds Total elapsed time = 10.10s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 142678.562 0 17 199716.000 142678.562 28.6% - 10s H 0 0 142693.00000 142678.562 0.01% - 10s H 0 0 142692.00000 142678.562 0.01% - 10s Explored 0 nodes (47513 simplex iterations) in 10.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.426920000000e+05, best bound 1.426790000000e+05, gap 0.0091%