Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:29:37 2012 Optimize a model with 442 rows, 441 columns and 1998 nonzeros Presolve removed 122 rows and 72 columns Presolve time: 0.02s Presolved: 320 rows, 369 columns, 4195 nonzeros Variable types: 20 continuous, 349 integer (349 binary) Root relaxation: objective 1.723647e+02, 90 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 172.36471 0 30 - 172.36471 - - 0s 0 0 200.06015 0 44 - 200.06015 - - 0s 0 0 205.29364 0 47 - 205.29364 - - 0s 0 0 206.04167 0 50 - 206.04167 - - 0s 0 0 206.04167 0 50 - 206.04167 - - 0s 0 0 206.04167 0 46 - 206.04167 - - 0s 0 0 206.04167 0 42 - 206.04167 - - 0s 0 0 206.04167 0 42 - 206.04167 - - 0s 0 0 206.04167 0 42 - 206.04167 - - 0s 0 0 206.04167 0 42 - 206.04167 - - 0s 0 2 206.12500 0 42 - 206.12500 - - 0s * 151 103 35 360.0000000 215.87500 40.0% 8.7 0s H 179 117 348.0000000 217.00000 37.6% 9.1 0s H 260 178 336.0000000 217.87079 35.2% 8.1 0s H 341 191 306.0000000 220.04167 28.1% 7.8 0s * 349 175 13 300.0000000 220.04167 26.7% 7.8 0s * 429 104 9 275.0000000 223.00498 18.9% 7.7 0s * 433 84 8 272.0000000 223.00498 18.0% 7.7 0s * 455 90 16 271.0000000 226.14489 16.6% 7.7 0s * 462 75 16 269.0000000 226.14489 15.9% 7.7 0s H 476 65 265.0000000 227.53713 14.1% 7.7 0s Cutting planes: Gomory: 17 Cover: 10 Implied bound: 20 Clique: 4 MIR: 23 GUB cover: 4 Zero half: 19 Explored 778 nodes (8754 simplex iterations) in 1.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.650000000000e+02, best bound 2.650000000000e+02, gap 0.0%