Gurobi 5.0.1 (linux64) logging started Mon Nov 19 08:51:42 2012 Optimize a model with 6430 rows, 160 columns and 12860 nonzeros Presolve removed 4701 rows and 0 columns Presolve time: 0.28s Presolved: 1729 rows, 160 columns, 12870 nonzeros Variable types: 0 continuous, 160 integer (160 binary) Found heuristic solution: objective 9.0000000 Root relaxation: objective 1.948676e+01, 877 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19.48676 0 160 9.00000 19.48676 117% - 0s 0 0 19.23144 0 160 9.00000 19.23144 114% - 0s 0 0 19.05040 0 160 9.00000 19.05040 112% - 0s 0 0 19.00606 0 160 9.00000 19.00606 111% - 1s 0 0 18.95235 0 160 9.00000 18.95235 111% - 1s 0 0 18.94568 0 160 9.00000 18.94568 111% - 1s 0 0 18.94373 0 160 9.00000 18.94373 110% - 1s 0 0 18.92102 0 160 9.00000 18.92102 110% - 1s 0 0 18.91594 0 159 9.00000 18.91594 110% - 2s 0 0 18.91570 0 160 9.00000 18.91570 110% - 2s 0 0 18.91566 0 159 9.00000 18.91566 110% - 2s 0 2 18.91557 0 159 9.00000 18.91557 110% - 3s 133 117 14.88223 6 85 9.00000 18.65619 107% 100 5s H 243 178 10.0000000 18.20264 82.0% 87.4 5s 601 373 13.74318 14 159 10.00000 16.49924 65.0% 85.7 12s 610 381 16.49924 12 159 10.00000 16.49924 65.0% 86.6 15s 687 432 11.65348 50 53 10.00000 15.46760 54.7% 125 20s 1384 472 13.94422 27 75 10.00000 14.42122 44.2% 91.0 25s 1717 422 11.48846 24 41 10.00000 13.84911 38.5% 83.4 30s 2234 414 12.86370 40 65 10.00000 12.93724 29.4% 77.2 35s Cutting planes: Clique: 47 Explored 3088 nodes (201882 simplex iterations) in 39.05 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%