Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:02:09 2012 Optimize a model with 3909 rows, 125 columns and 7818 nonzeros Presolve removed 2832 rows and 0 columns Presolve time: 0.14s Presolved: 1077 rows, 125 columns, 7620 nonzeros Variable types: 0 continuous, 125 integer (125 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.621844e+01, 566 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.21844 0 122 8.00000 16.21844 103% - 0s 0 0 15.95386 0 123 8.00000 15.95386 99.4% - 0s H 0 0 9.0000000 15.95386 77.3% - 0s 0 0 15.84961 0 124 9.00000 15.84961 76.1% - 0s 0 0 15.83154 0 125 9.00000 15.83154 75.9% - 0s 0 0 15.82836 0 125 9.00000 15.82836 75.9% - 0s 0 0 15.79128 0 123 9.00000 15.79128 75.5% - 0s 0 0 15.77608 0 122 9.00000 15.77608 75.3% - 1s 0 0 15.76774 0 124 9.00000 15.76774 75.2% - 1s 0 0 15.76667 0 124 9.00000 15.76667 75.2% - 1s 0 0 15.76666 0 124 9.00000 15.76666 75.2% - 1s 0 2 15.76530 0 124 9.00000 15.76530 75.2% - 2s H 84 54 10.0000000 15.61509 56.2% 84.8 2s Cutting planes: Clique: 71 Explored 360 nodes (28984 simplex iterations) in 4.01 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%