Gurobi 5.0.1 (linux64) logging started Fri Nov 16 20:46:52 2012 Optimize a model with 15227 rows, 20022 columns and 64999 nonzeros Presolve removed 306 rows and 3104 columns Presolve time: 0.31s Presolved: 14921 rows, 16918 columns, 60980 nonzeros Variable types: 0 continuous, 16918 integer (16918 binary) Found heuristic solution: objective 141.0000000 Root relaxation: objective 3.000000e+00, 10578 iterations, 0.63 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time * 0 0 0 3.0000000 3.00000 0.0% - 0s Explored 0 nodes (10578 simplex iterations) in 0.99 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%