Gurobi 5.0.1 (linux64) logging started Fri Nov 16 17:54:58 2012 Optimize a model with 6195 rows, 11130 columns and 29295 nonzeros Presolve removed 32 rows and 3360 columns Presolve time: 0.14s Presolved: 6163 rows, 7770 columns, 25935 nonzeros Variable types: 0 continuous, 7770 integer (7770 binary) Found heuristic solution: objective 24.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 5301 iterations, 0.11 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 cutoff 0 2.00000 1.00000 50.0% - 0s Explored 0 nodes (5301 simplex iterations) in 0.26 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%