Gurobi 5.0.1 (linux64) logging started Tue Nov 20 15:55:48 2012 Optimize a model with 321 rows, 241 columns and 642 nonzeros Presolve removed 304 rows and 226 columns Presolve time: 0.00s Presolved: 17 rows, 15 columns, 34 nonzeros Variable types: 0 continuous, 15 integer (15 binary) Found heuristic solution: objective 135.0000000 Root relaxation: objective 1.365000e+02, 15 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 136.50000 0 9 135.00000 136.50000 1.11% - 0s H 0 0 136.0000000 136.50000 0.37% - 0s Explored 0 nodes (19 simplex iterations) in 0.00 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.360000000000e+02, best bound 1.360000000000e+02, gap 0.0%