Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:10 2012 Optimize a model with 1 rows, 145 columns and 145 nonzeros Model has 117 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 118 rows, 236 columns, 470 nonzeros Variable types: 0 continuous, 236 integer (235 binary) Found heuristic solution: objective 26.0000000 Root relaxation: objective 0.000000e+00, 140 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 34 26.00000 0.00000 100% - 0s 0 0 0.00000 0 16 26.00000 0.00000 100% - 0s H 0 0 13.0000000 0.00000 100% - 0s H 0 0 12.0000000 0.00000 100% - 0s 0 0 0.00000 0 19 12.00000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 10.00000 0.00000 100% - 0s H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 14 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 8.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s 0 0 0.00000 0 7 6.00000 0.00000 100% - 0s 0 0 0.00000 0 9 6.00000 0.00000 100% - 0s 0 0 0.00000 0 9 6.00000 0.00000 100% - 0s 0 2 0.00000 0 9 6.00000 0.00000 100% - 0s H 54 29 5.0000000 0.00000 100% 2.6 0s H 290 88 4.0000000 0.00000 100% 7.9 0s * 293 64 13 3.0000000 0.00000 100% 8.0 0s Cutting planes: Cover: 207 Explored 366 nodes (5741 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.000000000000e+00, best bound 3.000000000000e+00, gap 0.0%