Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:28:15 2012 Optimize a model with 482 rows, 441 columns and 2794 nonzeros Presolve removed 47 rows and 77 columns Presolve time: 0.02s Presolved: 435 rows, 364 columns, 4239 nonzeros Variable types: 20 continuous, 344 integer (344 binary) Root relaxation: objective 1.748713e+02, 90 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 174.87132 0 45 - 174.87132 - - 0s 0 0 182.00000 0 17 - 182.00000 - - 0s 0 0 182.00000 0 17 - 182.00000 - - 0s 0 0 182.00000 0 17 - 182.00000 - - 0s 0 0 182.00000 0 17 - 182.00000 - - 0s 0 2 182.00000 0 17 - 182.00000 - - 0s * 170 117 40 322.0000000 184.58016 42.7% 8.5 0s * 291 196 18 306.0000000 186.76765 39.0% 9.2 0s H 307 132 259.0000000 186.76765 27.9% 9.2 0s * 327 127 28 256.0000000 186.76765 27.0% 9.1 0s H 417 147 251.0000000 189.84017 24.4% 8.8 0s H 444 150 250.0000000 190.55327 23.8% 8.9 0s * 1342 282 35 248.0000000 219.63561 11.4% 12.1 2s H 2134 452 246.0000000 224.01671 8.94% 11.7 2s H 2579 438 245.0000000 226.34529 7.61% 11.5 2s Cutting planes: Learned: 3 Gomory: 19 Cover: 23 Implied bound: 17 Clique: 4 MIR: 80 GUB cover: 12 Zero half: 27 Explored 4032 nodes (42932 simplex iterations) in 3.74 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.450000000000e+02, best bound 2.450000000000e+02, gap 0.0%