Gurobi 5.0.1 (linux64) logging started Tue Dec 25 15:25:15 2012 Optimize a model with 442 rows, 441 columns and 1993 nonzeros Presolve removed 147 rows and 86 columns Presolve time: 0.02s Presolved: 295 rows, 355 columns, 3282 nonzeros Variable types: 20 continuous, 335 integer (335 binary) Root relaxation: objective 1.581803e+02, 68 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 158.18025 0 32 - 158.18025 - - 0s 0 0 176.46306 0 25 - 176.46306 - - 0s 0 0 181.14286 0 23 - 181.14286 - - 0s 0 0 182.63333 0 30 - 182.63333 - - 0s 0 0 182.73810 0 31 - 182.73810 - - 0s 0 0 182.73810 0 30 - 182.73810 - - 0s H 0 0 385.0000000 182.73810 52.5% - 0s 0 2 185.78571 0 30 385.00000 185.78571 51.7% - 0s * 79 67 34 303.0000000 190.50000 37.1% 8.3 0s H 323 241 295.0000000 194.75000 34.0% 7.3 0s * 352 260 26 292.0000000 194.75000 33.3% 7.4 0s H 776 477 261.0000000 199.60487 23.5% 9.4 0s H 804 453 259.0000000 199.71704 22.9% 9.3 0s * 930 435 44 253.0000000 200.44321 20.8% 10.1 0s * 1035 411 39 250.0000000 200.75160 19.7% 10.6 0s * 1077 377 31 247.0000000 201.30217 18.5% 10.9 1s * 1446 347 40 246.0000000 205.78415 16.3% 12.3 1s H 1510 252 236.0000000 207.00000 12.3% 12.5 1s Cutting planes: Gomory: 21 Cover: 4 Implied bound: 49 Clique: 3 MIR: 34 GUB cover: 1 Zero half: 3 Explored 2612 nodes (37885 simplex iterations) in 2.52 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.360000000000e+02, best bound 2.360000000000e+02, gap 0.0%