Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:23:06 2012 Optimize a model with 442 rows, 441 columns and 1998 nonzeros Presolve removed 131 rows and 78 columns Presolve time: 0.02s Presolved: 311 rows, 363 columns, 3645 nonzeros Variable types: 20 continuous, 343 integer (343 binary) Root relaxation: objective 1.530474e+02, 87 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 153.04738 0 38 - 153.04738 - - 0s 0 0 176.15181 0 47 - 176.15181 - - 0s 0 0 179.52857 0 45 - 179.52857 - - 0s 0 0 179.61429 0 46 - 179.61429 - - 0s 0 0 179.73810 0 49 - 179.73810 - - 0s 0 0 179.73810 0 50 - 179.73810 - - 0s 0 0 179.73810 0 43 - 179.73810 - - 0s 0 2 182.07143 0 43 - 182.07143 - - 0s H 1174 610 271.0000000 193.00000 28.8% 15.9 1s * 1187 570 53 269.0000000 193.00000 28.3% 15.7 1s * 1231 555 26 258.0000000 193.42757 25.0% 15.8 1s * 1238 530 27 253.0000000 193.42757 23.5% 15.8 1s H 1255 507 250.0000000 193.50000 22.6% 15.7 1s * 1316 428 37 231.0000000 193.50000 16.2% 15.6 1s H 1472 412 228.0000000 194.00000 14.9% 15.9 1s * 2132 585 30 219.0000000 196.02083 10.5% 15.9 2s 3807 645 205.18646 39 30 219.00000 200.42182 8.48% 17.0 5s * 5825 575 56 218.0000000 206.80718 5.13% 17.3 6s Cutting planes: Gomory: 9 Cover: 45 Implied bound: 33 Clique: 4 MIR: 52 GUB cover: 5 Zero half: 35 Explored 7528 nodes (129211 simplex iterations) in 7.94 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.180000000000e+02, best bound 2.180000000000e+02, gap 0.0%