Gurobi 5.0.1 (linux64) logging started Mon Nov 19 08:50:54 2012 Optimize a model with 6387 rows, 160 columns and 12774 nonzeros Presolve removed 4606 rows and 0 columns Presolve time: 0.28s Presolved: 1781 rows, 160 columns, 13143 nonzeros Variable types: 0 continuous, 160 integer (160 binary) Found heuristic solution: objective 9.0000000 Root relaxation: objective 1.965752e+01, 763 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19.65752 0 160 9.00000 19.65752 118% - 0s 0 0 19.14311 0 160 9.00000 19.14311 113% - 0s 0 0 19.00041 0 159 9.00000 19.00041 111% - 0s 0 0 18.93788 0 159 9.00000 18.93788 110% - 1s 0 0 18.90587 0 159 9.00000 18.90587 110% - 1s 0 0 18.87263 0 160 9.00000 18.87263 110% - 1s 0 0 18.84554 0 159 9.00000 18.84554 109% - 1s 0 0 18.83611 0 159 9.00000 18.83611 109% - 2s 0 0 18.82553 0 159 9.00000 18.82553 109% - 2s 0 0 18.81897 0 159 9.00000 18.81897 109% - 2s 0 0 18.80888 0 160 9.00000 18.80888 109% - 2s 0 0 18.80599 0 160 9.00000 18.80599 109% - 2s 0 0 18.79834 0 159 9.00000 18.79834 109% - 3s 0 0 18.79539 0 160 9.00000 18.79539 109% - 3s 0 0 18.79506 0 160 9.00000 18.79506 109% - 3s 0 0 18.79505 0 160 9.00000 18.79505 109% - 3s 0 2 18.78976 0 160 9.00000 18.78976 109% - 4s 21 23 16.53019 21 135 9.00000 18.78976 109% 145 5s 512 367 13.77820 14 75 9.00000 17.26736 91.9% 79.1 10s H 583 351 10.0000000 16.96412 69.6% 79.2 11s 701 428 13.21930 14 160 10.00000 16.46009 64.6% 78.0 17s 715 439 16.46009 17 158 10.00000 16.46009 64.6% 79.9 20s 808 498 11.73849 63 54 10.00000 15.56334 55.6% 115 25s 1436 524 11.00000 28 24 10.00000 14.43056 44.3% 90.3 30s 1714 501 12.56732 44 65 10.00000 14.01961 40.2% 83.5 35s 2195 470 cutoff 51 10.00000 13.52569 35.3% 75.7 40s 2846 375 12.19460 52 58 10.00000 12.25124 22.5% 69.8 45s Cutting planes: Clique: 67 Explored 3372 nodes (212311 simplex iterations) in 47.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%