Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:11:50 2013 Optimize a model with 771 rows, 9454 columns and 443900 nonzeros Presolve removed 50 rows and 220 columns Presolve time: 3.83s Presolved: 721 rows, 9234 columns, 433216 nonzeros Variable types: 0 continuous, 9234 integer (9234 binary) Found heuristic solution: objective 5814.0000000 Found heuristic solution: objective 5093.0000000 Root relaxation: objective 3.466000e+03, 1563 iterations, 0.26 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3466.0000000 3466.00000 0.0% - 4s Explored 0 nodes (1563 simplex iterations) in 4.16 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.466000000000e+03, best bound 3.466000000000e+03, gap 0.0%