Gurobi 5.0.1 (linux64) logging started Wed Dec 26 03:49:13 2012 Optimize a model with 1682 rows, 1681 columns and 7862 nonzeros Presolve removed 569 rows and 330 columns Presolve time: 0.06s Presolved: 1113 rows, 1351 columns, 17862 nonzeros Variable types: 40 continuous, 1311 integer (1311 binary) Root relaxation: objective 2.038849e+02, 148 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 203.88489 0 65 - 203.88489 - - 0s 0 0 223.84198 0 79 - 223.84198 - - 0s 0 0 228.79800 0 61 - 228.79800 - - 0s 0 0 230.50424 0 70 - 230.50424 - - 0s 0 0 231.62500 0 81 - 231.62500 - - 0s 0 0 231.65000 0 77 - 231.65000 - - 0s 0 0 233.15000 0 79 - 233.15000 - - 0s 0 0 233.15000 0 79 - 233.15000 - - 0s 0 0 233.15000 0 79 - 233.15000 - - 0s H 0 0 352.0000000 233.15000 33.8% - 0s 0 2 237.11285 0 79 352.00000 237.11285 32.6% - 0s H 364 108 310.0000000 245.10848 20.9% 14.1 1s * 417 120 35 304.0000000 245.18013 19.3% 14.8 1s 754 232 287.58708 50 31 304.00000 254.90849 16.1% 20.1 5s H 808 190 298.0000000 255.15114 14.4% 19.6 5s * 1183 187 41 297.0000000 281.00000 5.39% 19.9 6s * 1202 176 48 296.0000000 281.00000 5.07% 19.8 6s * 1350 220 39 295.0000000 282.35146 4.29% 19.1 6s * 1381 219 49 294.0000000 282.55556 3.89% 18.8 6s * 1414 203 37 293.0000000 283.00000 3.41% 18.7 6s H 1447 95 288.0000000 283.06643 1.71% 18.5 6s Cutting planes: Gomory: 22 Cover: 35 Implied bound: 59 Clique: 7 MIR: 104 GUB cover: 2 Zero half: 15 Explored 1601 nodes (28688 simplex iterations) in 6.74 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%