Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:47:34 2012 Optimize a model with 2359 rows, 97 columns and 4718 nonzeros Presolve removed 1667 rows and 0 columns Presolve time: 0.07s Presolved: 692 rows, 97 columns, 4738 nonzeros Variable types: 0 continuous, 97 integer (97 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.418110e+01, 461 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.18110 0 92 7.00000 14.18110 103% - 0s 0 0 13.51660 0 94 7.00000 13.51660 93.1% - 0s 0 0 13.42198 0 97 7.00000 13.42198 91.7% - 0s H 0 0 8.0000000 13.42198 67.8% - 0s 0 0 13.37007 0 96 8.00000 13.37007 67.1% - 0s 0 0 13.33258 0 97 8.00000 13.33258 66.7% - 0s 0 0 13.31561 0 95 8.00000 13.31561 66.4% - 0s 0 0 13.29008 0 97 8.00000 13.29008 66.1% - 0s 0 0 13.28679 0 97 8.00000 13.28679 66.1% - 0s 0 0 13.28667 0 97 8.00000 13.28667 66.1% - 0s H 0 0 9.0000000 13.28667 47.6% - 0s 0 0 13.28663 0 97 9.00000 13.28663 47.6% - 0s 0 2 13.28464 0 97 9.00000 13.28464 47.6% - 0s Cutting planes: Clique: 96 Explored 123 nodes (8573 simplex iterations) in 1.37 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%