Gurobi 5.0.1 (linux64) logging started Fri Nov 16 15:15:22 2012 Optimize a model with 3743 rows, 2756 columns and 13726 nonzeros Presolve removed 106 rows and 2 columns Presolve time: 0.10s Presolved: 3637 rows, 2754 columns, 13326 nonzeros Variable types: 0 continuous, 2754 integer (2754 binary) Found heuristic solution: objective 52.0000000 Root relaxation: objective 3.000000e+00, 1988 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 27 52.00000 3.00000 94.2% - 0s H 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (7272 simplex iterations) in 0.52 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%