Gurobi 5.0.1 (linux64) logging started Mon Feb 4 16:02:35 2013 Optimize a model with 231 rows, 121 columns and 726 nonzeros Presolve removed 86 rows and 64 columns Presolve time: 0.00s Presolved: 145 rows, 57 columns, 475 nonzeros Variable types: 5 continuous, 52 integer (52 binary) Found heuristic solution: objective 2783.0000000 Found heuristic solution: objective 2725.0000000 Root relaxation: objective 2.409071e+03, 18 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2409.07143 0 4 2725.00000 2409.07143 11.6% - 0s H 0 0 2441.0000000 2409.07143 1.31% - 0s 0 0 2417.41257 0 8 2441.00000 2417.41257 0.97% - 0s 0 0 2418.01682 0 11 2441.00000 2418.01682 0.94% - 0s 0 0 2418.01682 0 4 2441.00000 2418.01682 0.94% - 0s 0 0 2418.24163 0 8 2441.00000 2418.24163 0.93% - 0s 0 0 2420.50308 0 12 2441.00000 2420.50308 0.84% - 0s 0 0 2420.62882 0 12 2441.00000 2420.62882 0.83% - 0s H 0 0 2421.0000000 2420.62882 0.02% - 0s Cutting planes: MIR: 6 Explored 0 nodes (75 simplex iterations) in 0.01 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.421000000000e+03, best bound 2.421000000000e+03, gap 0.0%