Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:51:49 2012 Optimize a model with 2937 rows, 109 columns and 5874 nonzeros Presolve removed 2073 rows and 0 columns Presolve time: 0.09s Presolved: 864 rows, 109 columns, 5833 nonzeros Variable types: 0 continuous, 109 integer (109 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.530858e+01, 419 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.30858 0 104 7.00000 15.30858 119% - 0s H 0 0 8.0000000 15.30858 91.4% - 0s 0 0 14.83789 0 106 8.00000 14.83789 85.5% - 0s 0 0 14.69965 0 107 8.00000 14.69965 83.7% - 0s 0 0 14.63535 0 107 8.00000 14.63535 82.9% - 0s H 0 0 9.0000000 14.63535 62.6% - 0s 0 0 14.60051 0 108 9.00000 14.60051 62.2% - 0s 0 0 14.56956 0 109 9.00000 14.56956 61.9% - 0s 0 0 14.55241 0 109 9.00000 14.55241 61.7% - 1s 0 0 14.54656 0 109 9.00000 14.54656 61.6% - 1s 0 0 14.52846 0 109 9.00000 14.52846 61.4% - 1s 0 0 14.51341 0 108 9.00000 14.51341 61.3% - 1s 0 0 14.50052 0 109 9.00000 14.50052 61.1% - 1s 0 0 14.48422 0 109 9.00000 14.48422 60.9% - 1s 0 0 14.48319 0 109 9.00000 14.48319 60.9% - 1s 0 0 14.48311 0 109 9.00000 14.48311 60.9% - 1s 0 0 14.48300 0 109 9.00000 14.48300 60.9% - 1s 0 2 14.48222 0 109 9.00000 14.48222 60.9% - 2s Cutting planes: Clique: 114 Explored 305 nodes (19432 simplex iterations) in 3.26 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%