Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:49:43 2012 Optimize a model with 2686 rows, 104 columns and 5372 nonzeros Presolve removed 1875 rows and 0 columns Presolve time: 0.09s Presolved: 811 rows, 104 columns, 5617 nonzeros Variable types: 0 continuous, 104 integer (104 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.454192e+01, 452 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.54192 0 102 7.00000 14.54192 108% - 0s 0 0 14.30788 0 104 7.00000 14.30788 104% - 0s H 0 0 8.0000000 14.30788 78.8% - 0s 0 0 14.21371 0 104 8.00000 14.21371 77.7% - 0s 0 0 14.17348 0 103 8.00000 14.17348 77.2% - 0s 0 0 14.14270 0 103 8.00000 14.14270 76.8% - 0s 0 0 14.12957 0 104 8.00000 14.12957 76.6% - 0s 0 0 14.12872 0 104 8.00000 14.12872 76.6% - 0s H 0 0 9.0000000 14.12872 57.0% - 0s 0 0 14.09687 0 104 9.00000 14.09687 56.6% - 0s 0 0 14.09524 0 104 9.00000 14.09524 56.6% - 1s 0 0 14.09498 0 104 9.00000 14.09498 56.6% - 1s 0 2 14.09383 0 104 9.00000 14.09383 56.6% - 1s Cutting planes: Clique: 59 Explored 210 nodes (13229 simplex iterations) in 2.34 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%