Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:39:11 2012 Optimize a model with 10656 rows, 5256 columns and 36936 nonzeros Presolve removed 1872 rows and 0 columns Presolve time: 0.21s Presolved: 8784 rows, 5256 columns, 32328 nonzeros Variable types: 0 continuous, 5256 integer (5256 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 3.000000e+00, 9187 iterations, 1.42 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 79 41.00000 3.00000 92.7% - 3s H 0 0 4.0000000 3.00000 25.0% - 3s H 0 0 3.0000000 3.00000 0.0% - 3s Explored 0 nodes (22381 simplex iterations) in 3.63 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%