Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:00:43 2012 Optimize a model with 3805 rows, 123 columns and 7610 nonzeros Presolve removed 2743 rows and 0 columns Presolve time: 0.12s Presolved: 1062 rows, 123 columns, 7475 nonzeros Variable types: 0 continuous, 123 integer (123 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.634112e+01, 521 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.34112 0 119 7.00000 16.34112 133% - 0s H 0 0 8.0000000 16.34112 104% - 0s 0 0 15.87612 0 122 8.00000 15.87612 98.5% - 0s H 0 0 9.0000000 15.87612 76.4% - 0s 0 0 15.72630 0 120 9.00000 15.72630 74.7% - 0s 0 0 15.66714 0 122 9.00000 15.66714 74.1% - 0s H 0 0 10.0000000 15.66714 56.7% - 0s 0 0 15.62504 0 120 10.00000 15.62504 56.3% - 0s 0 0 15.60034 0 121 10.00000 15.60034 56.0% - 1s 0 0 15.59408 0 121 10.00000 15.59408 55.9% - 1s 0 0 15.59384 0 122 10.00000 15.59384 55.9% - 1s 0 0 15.59379 0 122 10.00000 15.59379 55.9% - 1s 0 2 15.59378 0 122 10.00000 15.59378 55.9% - 1s Cutting planes: Clique: 112 Explored 259 nodes (23027 simplex iterations) in 3.55 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%