Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:46:01 2012 Optimize a model with 2033 rows, 90 columns and 4066 nonzeros Presolve removed 1426 rows and 0 columns Presolve time: 0.05s Presolved: 607 rows, 90 columns, 4103 nonzeros Variable types: 0 continuous, 90 integer (90 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.325455e+01, 304 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.25455 0 78 6.00000 13.25455 121% - 0s H 0 0 8.0000000 13.25455 65.7% - 0s 0 0 12.81387 0 87 8.00000 12.81387 60.2% - 0s 0 0 12.77221 0 86 8.00000 12.77221 59.7% - 0s 0 0 12.75989 0 88 8.00000 12.75989 59.5% - 0s 0 0 12.75406 0 87 8.00000 12.75406 59.4% - 0s 0 0 12.74262 0 89 8.00000 12.74262 59.3% - 0s 0 0 12.72075 0 88 8.00000 12.72075 59.0% - 0s H 0 0 10.0000000 12.72075 27.2% - 0s 0 0 12.70456 0 89 10.00000 12.70456 27.0% - 0s 0 0 12.69428 0 89 10.00000 12.69428 26.9% - 0s 0 0 12.68769 0 89 10.00000 12.68769 26.9% - 0s 0 0 12.68569 0 89 10.00000 12.68569 26.9% - 0s 0 0 12.68565 0 89 10.00000 12.68565 26.9% - 0s 0 0 12.68555 0 89 10.00000 12.68555 26.9% - 0s 0 2 12.68416 0 89 10.00000 12.68416 26.8% - 1s Cutting planes: Clique: 44 Zero half: 3 Explored 25 nodes (2679 simplex iterations) in 1.12 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%