Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:29:27 2012 Optimize a model with 482 rows, 441 columns and 2807 nonzeros Presolve removed 41 rows and 79 columns Presolve time: 0.01s Presolved: 441 rows, 362 columns, 3933 nonzeros Variable types: 20 continuous, 342 integer (342 binary) Found heuristic solution: objective 374.0000000 Root relaxation: objective 2.010379e+02, 109 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 201.03792 0 33 374.00000 201.03792 46.2% - 0s 0 0 205.31566 0 32 374.00000 205.31566 45.1% - 0s 0 0 205.61859 0 33 374.00000 205.61859 45.0% - 0s 0 0 205.64866 0 31 374.00000 205.64866 45.0% - 0s 0 0 205.65769 0 32 374.00000 205.65769 45.0% - 0s 0 0 205.66143 0 35 374.00000 205.66143 45.0% - 0s 0 0 205.66143 0 35 374.00000 205.66143 45.0% - 0s H 0 0 347.0000000 205.66143 40.7% - 0s H 0 0 339.0000000 205.66143 39.3% - 0s 0 2 205.79727 0 35 339.00000 205.79727 39.3% - 0s H 63 52 330.0000000 213.38521 35.3% 9.4 0s H 81 64 323.0000000 213.38521 33.9% 8.5 0s * 99 78 35 316.0000000 213.38521 32.5% 7.7 0s H 237 143 297.0000000 218.43608 26.5% 10.0 0s * 295 164 21 290.0000000 218.56609 24.6% 9.8 0s * 372 73 11 256.0000000 225.67917 11.8% 9.5 0s * 381 62 14 254.0000000 225.67917 11.1% 9.5 0s * 383 59 14 253.0000000 225.67917 10.8% 9.5 0s Cutting planes: Learned: 2 Gomory: 2 Cover: 38 Implied bound: 3 Clique: 2 MIR: 13 GUB cover: 8 Explored 626 nodes (5690 simplex iterations) in 0.50 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.530000000000e+02, best bound 2.530000000000e+02, gap 0.0%