Gurobi 5.0.1 (linux64) logging started Mon Nov 19 08:53:42 2012 Optimize a model with 6408 rows, 160 columns and 12816 nonzeros Presolve removed 4654 rows and 0 columns Presolve time: 0.28s Presolved: 1754 rows, 160 columns, 12980 nonzeros Variable types: 0 continuous, 160 integer (160 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.972790e+01, 789 iterations, 0.07 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 19.72790 0 159 6.00000 19.72790 229% - 0s H 0 0 7.0000000 19.72790 182% - 0s H 0 0 8.0000000 19.72790 147% - 0s 0 0 19.35365 0 155 8.00000 19.35365 142% - 0s 0 0 19.18837 0 159 8.00000 19.18837 140% - 0s 0 0 19.13391 0 159 8.00000 19.13391 139% - 1s H 0 0 9.0000000 19.13391 113% - 1s 0 0 19.10503 0 160 9.00000 19.10503 112% - 1s 0 0 19.09008 0 160 9.00000 19.09008 112% - 1s 0 0 19.08699 0 160 9.00000 19.08699 112% - 1s 0 0 19.08632 0 160 9.00000 19.08632 112% - 2s 0 0 19.08610 0 160 9.00000 19.08610 112% - 2s 0 0 19.08605 0 160 9.00000 19.08605 112% - 2s 0 2 19.08593 0 160 9.00000 19.08593 112% - 3s 178 154 12.87347 13 69 9.00000 18.72333 108% 94.5 5s H 600 341 10.0000000 16.94459 69.4% 81.1 13s 609 347 11.71803 20 160 10.00000 16.94459 69.4% 79.9 15s 649 376 13.21463 29 72 10.00000 16.94261 69.4% 108 20s 1075 407 cutoff 42 10.00000 14.76745 47.7% 108 25s 1542 415 11.79088 26 43 10.00000 14.00419 40.0% 89.6 30s 1795 409 13.06744 28 64 10.00000 13.62048 36.2% 84.3 35s 2412 438 11.25528 26 44 10.00000 12.69314 26.9% 76.2 40s Cutting planes: Clique: 49 Explored 3159 nodes (207887 simplex iterations) in 43.72 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%