Gurobi 5.0.1 (linux64) logging started Mon Feb 4 19:12:00 2013 Optimize a model with 85400 rows, 6400 columns and 259200 nonzeros Presolve removed 6845 rows and 3259 columns Presolve time: 0.84s Presolved: 78555 rows, 3141 columns, 237894 nonzeros Variable types: 29 continuous, 3112 integer (3112 binary) Found heuristic solution: objective 132209.00000 Root relaxation: objective 1.019111e+05, 15557 iterations, 1.71 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 101911.136 0 18 132209.000 101911.136 22.9% - 2s H 0 0 101934.00000 101911.136 0.02% - 2s H 0 0 101933.00000 101911.136 0.02% - 2s H 0 0 101918.00000 101911.136 0.01% - 3s Explored 0 nodes (15755 simplex iterations) in 3.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.019180000000e+05, best bound 1.019120000000e+05, gap 0.0059%