Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:58:44 2012 Optimize a model with 3624 rows, 121 columns and 7248 nonzeros Presolve removed 2600 rows and 0 columns Presolve time: 0.13s Presolved: 1024 rows, 121 columns, 7119 nonzeros Variable types: 0 continuous, 121 integer (121 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.618678e+01, 523 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.18678 0 120 7.00000 16.18678 131% - 0s H 0 0 8.0000000 16.18678 102% - 0s 0 0 15.86434 0 120 8.00000 15.86434 98.3% - 0s H 0 0 9.0000000 15.86434 76.3% - 0s 0 0 15.76132 0 121 9.00000 15.76132 75.1% - 0s 0 0 15.71843 0 121 9.00000 15.71843 74.6% - 0s 0 0 15.68524 0 120 9.00000 15.68524 74.3% - 0s 0 0 15.68119 0 121 9.00000 15.68119 74.2% - 0s 0 0 15.67990 0 121 9.00000 15.67990 74.2% - 1s 0 0 15.67987 0 121 9.00000 15.67987 74.2% - 1s 0 2 15.67936 0 121 9.00000 15.67936 74.2% - 1s H 301 93 10.0000000 13.48944 34.9% 64.8 2s Cutting planes: Clique: 79 Zero half: 1 Explored 433 nodes (27718 simplex iterations) in 3.43 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%