Gurobi 5.0.1 (linux64) logging started Tue Dec 25 19:04:06 2012 Optimize a model with 1762 rows, 1681 columns and 10613 nonzeros Presolve removed 334 rows and 497 columns Presolve time: 0.07s Presolved: 1428 rows, 1184 columns, 19141 nonzeros Variable types: 40 continuous, 1144 integer (1144 binary) Root relaxation: objective 3.105513e+02, 230 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 310.55132 0 90 - 310.55132 - - 0s 0 0 315.20251 0 93 - 315.20251 - - 0s 0 0 316.67741 0 88 - 316.67741 - - 0s 0 0 316.83014 0 91 - 316.83014 - - 0s 0 0 317.44919 0 73 - 317.44919 - - 0s 0 0 317.64835 0 89 - 317.64835 - - 0s 0 0 317.75871 0 90 - 317.75871 - - 0s 0 0 318.11585 0 96 - 318.11585 - - 0s 0 0 318.11585 0 96 - 318.11585 - - 0s 0 0 318.11585 0 70 - 318.11585 - - 0s 0 2 318.11585 0 70 - 318.11585 - - 0s * 532 359 50 430.0000000 322.52010 25.0% 11.9 1s * 536 353 50 427.0000000 322.52010 24.5% 12.0 1s H 642 338 401.0000000 323.64789 19.3% 12.4 2s H 696 326 388.0000000 325.10502 16.2% 12.2 2s H 777 295 368.0000000 326.13830 11.4% 12.3 2s H 904 371 366.0000000 327.01548 10.7% 12.3 3s 918 381 335.59999 14 90 366.00000 335.59999 8.31% 13.6 5s H 1322 366 350.0000000 338.42081 3.31% 18.4 8s 1871 90 cutoff 37 350.00000 346.42722 1.02% 21.6 10s Cutting planes: Learned: 8 Gomory: 30 Cover: 4 Implied bound: 10 Clique: 1 MIR: 46 GUB cover: 11 Zero half: 29 Mod-K: 1 Explored 1921 nodes (41739 simplex iterations) in 10.07 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.500000000000e+02, best bound 3.500000000000e+02, gap 0.0%