Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:57:21 2012 Optimize a model with 3499 rows, 119 columns and 6998 nonzeros Presolve removed 2492 rows and 0 columns Presolve time: 0.11s Presolved: 1007 rows, 119 columns, 6952 nonzeros Variable types: 0 continuous, 119 integer (119 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.611010e+01, 531 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.11010 0 118 7.00000 16.11010 130% - 0s 0 0 15.79302 0 119 7.00000 15.79302 126% - 0s 0 0 15.74292 0 119 7.00000 15.74292 125% - 0s H 0 0 8.0000000 15.74292 96.8% - 0s 0 0 15.71673 0 119 8.00000 15.71673 96.5% - 0s 0 0 15.69699 0 119 8.00000 15.69699 96.2% - 0s 0 0 15.67538 0 119 8.00000 15.67538 95.9% - 0s 0 0 15.67150 0 119 8.00000 15.67150 95.9% - 0s 0 0 15.67144 0 119 8.00000 15.67144 95.9% - 1s H 0 0 9.0000000 15.67144 74.1% - 1s 0 2 15.66578 0 119 9.00000 15.66578 74.1% - 1s H 435 76 10.0000000 12.36974 23.7% 61.1 3s Cutting planes: Clique: 50 Zero half: 3 Explored 516 nodes (29948 simplex iterations) in 3.39 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%