Gurobi 5.0.1 (linux64) logging started Wed Dec 26 03:49:20 2012 Optimize a model with 1762 rows, 1681 columns and 10994 nonzeros Presolve removed 222 rows and 330 columns Presolve time: 0.07s Presolved: 1540 rows, 1351 columns, 18687 nonzeros Variable types: 40 continuous, 1311 integer (1311 binary) Root relaxation: objective 2.278272e+02, 224 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 227.82716 0 70 - 227.82716 - - 0s 0 0 233.52463 0 85 - 233.52463 - - 0s 0 0 236.88286 0 77 - 236.88286 - - 0s 0 0 236.88286 0 82 - 236.88286 - - 0s 0 0 236.88286 0 66 - 236.88286 - - 0s 0 0 236.88286 0 70 - 236.88286 - - 0s 0 0 236.88286 0 65 - 236.88286 - - 0s 0 0 236.88286 0 63 - 236.88286 - - 0s 0 0 236.88286 0 52 - 236.88286 - - 0s 0 0 236.88286 0 68 - 236.88286 - - 0s 0 0 236.88286 0 65 - 236.88286 - - 0s 0 0 236.88286 0 54 - 236.88286 - - 0s 0 0 236.88286 0 64 - 236.88286 - - 0s 0 0 236.88286 0 64 - 236.88286 - - 0s 0 2 236.88286 0 64 - 236.88286 - - 1s H 604 430 336.0000000 240.55832 28.4% 13.7 3s H 604 408 307.0000000 240.55832 21.6% 13.7 3s 613 414 307.00000 150 75 307.00000 251.37654 18.1% 13.5 5s H 626 402 306.0000000 251.95871 17.7% 13.2 7s 641 413 306.00000 107 64 306.00000 253.27829 17.2% 19.7 10s H 678 405 296.0000000 254.04085 14.2% 21.6 12s H 705 387 290.0000000 261.58772 9.80% 22.5 12s H 912 311 288.0000000 280.15830 2.72% 22.8 13s Cutting planes: Learned: 4 Gomory: 13 Cover: 28 Implied bound: 4 Clique: 5 MIR: 33 GUB cover: 8 Zero half: 21 Mod-K: 1 Explored 1017 nodes (24069 simplex iterations) in 13.40 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.880000000000e+02, best bound 2.880000000000e+02, gap 0.0%