Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:47:58 2012 Optimize a model with 2420 rows, 99 columns and 4840 nonzeros Presolve removed 1735 rows and 0 columns Presolve time: 0.07s Presolved: 685 rows, 99 columns, 4549 nonzeros Variable types: 0 continuous, 99 integer (99 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.421483e+01, 364 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.21483 0 94 6.00000 14.21483 137% - 0s H 0 0 7.0000000 14.21483 103% - 0s 0 0 13.82305 0 97 7.00000 13.82305 97.5% - 0s 0 0 13.78677 0 97 7.00000 13.78677 97.0% - 0s H 0 0 8.0000000 13.78677 72.3% - 0s 0 0 13.73271 0 98 8.00000 13.73271 71.7% - 0s 0 0 13.71897 0 98 8.00000 13.71897 71.5% - 0s 0 0 13.67157 0 98 8.00000 13.67157 70.9% - 0s 0 0 13.64279 0 97 8.00000 13.64279 70.5% - 0s 0 0 13.64170 0 98 8.00000 13.64170 70.5% - 0s 0 0 13.63458 0 97 8.00000 13.63458 70.4% - 0s 0 0 13.59989 0 99 8.00000 13.59989 70.0% - 0s 0 0 13.59377 0 97 8.00000 13.59377 69.9% - 0s 0 0 13.58517 0 97 8.00000 13.58517 69.8% - 1s 0 0 13.58485 0 96 8.00000 13.58485 69.8% - 1s 0 0 13.58427 0 96 8.00000 13.58427 69.8% - 1s 0 2 13.58304 0 96 8.00000 13.58304 69.8% - 1s * 62 36 4 9.0000000 13.35559 48.4% 64.4 1s Cutting planes: Clique: 73 Explored 172 nodes (10703 simplex iterations) in 1.95 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%