Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:27:30 2012 Optimize a model with 1 rows, 153 columns and 153 nonzeros Model has 124 quadratic objective terms Presolve removed 0 rows and 31 columns Presolve time: 0.00s Presolved: 125 rows, 246 columns, 494 nonzeros Variable types: 0 continuous, 246 integer (245 binary) Found heuristic solution: objective 29.0000000 Root relaxation: objective 0.000000e+00, 147 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 32 29.00000 0.00000 100% - 0s 0 0 0.00000 0 17 29.00000 0.00000 100% - 0s H 0 0 15.0000000 0.00000 100% - 0s H 0 0 14.0000000 0.00000 100% - 0s 0 0 0.00000 0 21 14.00000 0.00000 100% - 0s 0 0 0.00000 0 17 14.00000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 12.00000 0.00000 100% - 0s 0 0 0.00000 0 14 12.00000 0.00000 100% - 0s 0 0 0.00000 0 13 12.00000 0.00000 100% - 0s 0 0 0.00000 0 10 12.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 13 9.00000 0.00000 100% - 0s 0 0 0.00000 0 12 9.00000 0.00000 100% - 0s 0 0 0.00000 0 14 9.00000 0.00000 100% - 0s 0 0 0.00000 0 14 9.00000 0.00000 100% - 0s 0 2 0.00000 0 14 9.00000 0.00000 100% - 0s H 27 22 7.0000000 0.00000 100% 1.6 0s H 216 122 6.0000000 0.00000 100% 4.7 0s H 352 138 5.0000000 0.00000 100% 6.9 0s * 379 88 38 4.0000000 0.00000 100% 6.6 0s H 380 59 3.0000000 0.00000 100% 6.5 0s * 440 22 11 2.0000000 1.00000 50.0% 9.1 0s Cutting planes: Cover: 208 Explored 463 nodes (5852 simplex iterations) in 0.14 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%