Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:51:17 2012 Optimize a model with 2877 rows, 108 columns and 5754 nonzeros Presolve removed 2036 rows and 0 columns Presolve time: 0.09s Presolved: 841 rows, 108 columns, 5777 nonzeros Variable types: 0 continuous, 108 integer (108 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.476630e+01, 524 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.76630 0 100 7.00000 14.76630 111% - 0s H 0 0 8.0000000 14.76630 84.6% - 0s 0 0 14.37877 0 108 8.00000 14.37877 79.7% - 0s H 0 0 9.0000000 14.37877 59.8% - 0s 0 0 14.29077 0 108 9.00000 14.29077 58.8% - 0s 0 0 14.24246 0 108 9.00000 14.24246 58.2% - 0s 0 0 14.23047 0 107 9.00000 14.23047 58.1% - 0s 0 0 14.23033 0 107 9.00000 14.23033 58.1% - 0s 0 2 14.22710 0 107 9.00000 14.22710 58.1% - 0s Cutting planes: Clique: 99 Explored 275 nodes (17394 simplex iterations) in 1.96 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%