Gurobi 5.0.1 (linux64) logging started Wed Dec 19 14:01:53 2012 Optimize a model with 482 rows, 441 columns and 2726 nonzeros Presolve removed 78 rows and 138 columns Presolve time: 0.01s Presolved: 404 rows, 303 columns, 3371 nonzeros Variable types: 20 continuous, 283 integer (283 binary) Root relaxation: objective 1.896507e+02, 105 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 189.65065 0 31 - 189.65065 - - 0s 0 0 192.81502 0 33 - 192.81502 - - 0s 0 0 193.44564 0 36 - 193.44564 - - 0s 0 0 193.54223 0 28 - 193.54223 - - 0s 0 2 193.70890 0 28 - 193.70890 - - 0s * 483 249 37 298.0000000 200.24240 32.8% 9.0 0s H 595 241 282.0000000 205.71449 27.1% 9.4 0s H 979 296 277.0000000 208.26266 24.8% 9.9 0s H 1124 296 276.0000000 208.26266 24.5% 10.0 0s H 2086 297 274.0000000 230.72254 15.8% 10.8 1s * 2651 326 27 273.0000000 241.56973 11.5% 10.6 1s * 2711 236 27 267.0000000 242.50000 9.18% 10.6 1s H 2814 205 265.0000000 244.00000 7.92% 10.6 1s * 3150 121 26 264.0000000 254.00000 3.79% 10.5 1s Cutting planes: Gomory: 3 Cover: 1 MIR: 4 GUB cover: 5 Explored 3586 nodes (36593 simplex iterations) in 2.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.640000000000e+02, best bound 2.640000000000e+02, gap 0.0%