Gurobi 5.0.1 (linux64) logging started Mon Feb 4 18:43:10 2013 Optimize a model with 9919 rows, 1521 columns and 30420 nonzeros Presolve removed 1866 rows and 799 columns Presolve time: 0.07s Presolved: 8053 rows, 722 columns, 24625 nonzeros Variable types: 13 continuous, 709 integer (709 binary) Found heuristic solution: objective 36363.000000 Root relaxation: objective 2.923210e+04, 2647 iterations, 0.09 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 29232.1000 0 4 36363.0000 29232.1000 19.6% - 0s H 0 0 29235.000000 29232.1000 0.01% - 0s Explored 0 nodes (2663 simplex iterations) in 0.19 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.923500000000e+04, best bound 2.923300000000e+04, gap 0.0068%