Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:25:43 2012 Optimize a model with 1 rows, 147 columns and 147 nonzeros Model has 118 quadratic objective terms Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 119 rows, 239 columns, 475 nonzeros Variable types: 0 continuous, 239 integer (238 binary) Found heuristic solution: objective 36.0000000 Root relaxation: objective 0.000000e+00, 149 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 21 36.00000 0.00000 100% - 0s H 0 0 19.0000000 0.00000 100% - 0s 0 0 0.00000 0 29 19.00000 0.00000 100% - 0s H 0 0 18.0000000 0.00000 100% - 0s 0 0 0.00000 0 15 18.00000 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 H 0 0 9.0000000 0.00000 100% - 0s 0 0 0.00000 0 9 9.00000 0.00000 100% - 0s H 0 0 8.0000000 0.00000 100% - 0s 0 0 0.00000 0 11 8.00000 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 H 0 0 5.0000000 0.00000 100% - 0s 0 0 0.00000 0 4 5.00000 0.00000 100% - 0s H 0 0 2.0000000 0.00000 100% - 0s 0 0 0.00000 0 4 2.00000 0.00000 100% - 0s 0 0 0.00000 0 4 2.00000 0.00000 100% - 0s 0 2 0.00000 0 4 2.00000 0.00000 100% - 0s Cutting planes: Cover: 192 MIR: 2 Explored 474 nodes (4957 simplex iterations) in 0.11 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%