Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:20:46 2012 Optimize a model with 12150 rows, 18360 columns and 54270 nonzeros Presolve removed 32 rows and 4320 columns Presolve time: 0.22s Presolved: 12118 rows, 14040 columns, 49950 nonzeros Variable types: 0 continuous, 14040 integer (14040 binary) Found heuristic solution: objective 38.0000000 Found heuristic solution: objective 2.0000000 Root relaxation: cutoff, 10924 iterations, 0.43 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 (10924 simplex iterations) in 0.67 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%