Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:56:40 2012 Optimize a model with 3443 rows, 118 columns and 6886 nonzeros Presolve removed 2449 rows and 0 columns Presolve time: 0.11s Presolved: 994 rows, 118 columns, 6862 nonzeros Variable types: 0 continuous, 118 integer (118 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.579612e+01, 468 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 15.79612 0 116 8.00000 15.79612 97.5% - 0s 0 0 15.49155 0 116 8.00000 15.49155 93.6% - 0s 0 0 15.34564 0 117 8.00000 15.34564 91.8% - 0s 0 0 15.31553 0 117 8.00000 15.31553 91.4% - 0s 0 0 15.26741 0 118 8.00000 15.26741 90.8% - 0s 0 0 15.25364 0 118 8.00000 15.25364 90.7% - 0s 0 0 15.22965 0 118 8.00000 15.22965 90.4% - 1s H 0 0 9.0000000 15.22965 69.2% - 1s 0 0 15.20558 0 118 9.00000 15.20558 69.0% - 1s 0 0 15.19776 0 118 9.00000 15.19776 68.9% - 1s 0 0 15.19453 0 118 9.00000 15.19453 68.8% - 1s 0 0 15.19013 0 118 9.00000 15.19013 68.8% - 1s 0 0 15.18390 0 118 9.00000 15.18390 68.7% - 1s 0 0 15.17989 0 118 9.00000 15.17989 68.7% - 2s 0 0 15.17844 0 118 9.00000 15.17844 68.6% - 2s 0 0 15.16003 0 117 9.00000 15.16003 68.4% - 2s 0 0 15.15790 0 117 9.00000 15.15790 68.4% - 2s 0 0 15.15665 0 117 9.00000 15.15665 68.4% - 2s 0 0 15.15662 0 117 9.00000 15.15662 68.4% - 2s 0 0 15.15660 0 117 9.00000 15.15660 68.4% - 3s 0 0 15.15660 0 117 9.00000 15.15660 68.4% - 3s 0 2 15.15525 0 117 9.00000 15.15525 68.4% - 3s H 108 52 10.0000000 14.53656 45.4% 76.5 3s Cutting planes: Clique: 92 Explored 237 nodes (18409 simplex iterations) in 4.52 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%