Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:25:00 2012 Optimize a model with 482 rows, 441 columns and 2777 nonzeros Presolve removed 63 rows and 90 columns Presolve time: 0.01s Presolved: 419 rows, 351 columns, 4016 nonzeros Variable types: 20 continuous, 331 integer (331 binary) Root relaxation: objective 2.226006e+02, 95 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 222.60062 0 44 - 222.60062 - - 0s 0 0 227.62837 0 33 - 227.62837 - - 0s 0 0 228.06810 0 31 - 228.06810 - - 0s 0 0 228.17816 0 39 - 228.17816 - - 0s 0 0 228.21159 0 28 - 228.21159 - - 0s 0 0 228.22706 0 38 - 228.22706 - - 0s 0 0 228.22706 0 38 - 228.22706 - - 0s 0 2 228.24041 0 38 - 228.24041 - - 0s * 772 426 38 341.0000000 242.32900 28.9% 13.6 0s * 828 418 48 329.0000000 242.32900 26.3% 13.6 0s H 883 401 325.0000000 242.32900 25.4% 13.4 0s H 992 393 320.0000000 242.80357 24.1% 13.3 1s H 1046 310 292.0000000 244.30971 16.3% 13.3 1s H 1100 302 290.0000000 244.85812 15.6% 13.2 1s H 1211 266 282.0000000 246.35757 12.6% 13.1 1s * 1384 274 37 280.0000000 247.22954 11.7% 13.4 1s * 2313 189 37 274.0000000 258.03239 5.83% 12.5 2s H 2404 175 272.0000000 259.56774 4.57% 12.4 2s Cutting planes: Learned: 4 Gomory: 2 Cover: 2 Clique: 1 MIR: 4 GUB cover: 2 Explored 2879 nodes (34015 simplex iterations) in 2.59 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.720000000000e+02, best bound 2.720000000000e+02, gap 0.0%