Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:35 2012 Optimize a model with 998 rows, 63 columns and 1996 nonzeros Presolve removed 691 rows and 0 columns Presolve time: 0.02s Presolved: 307 rows, 63 columns, 1934 nonzeros Variable types: 0 continuous, 63 integer (63 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.020753e+01, 147 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.20753 0 58 7.00000 10.20753 45.8% - 0s 0 0 9.84231 0 59 7.00000 9.84231 40.6% - 0s 0 0 9.80840 0 58 7.00000 9.80840 40.1% - 0s 0 0 9.79614 0 60 7.00000 9.79614 39.9% - 0s 0 0 9.77523 0 60 7.00000 9.77523 39.6% - 0s 0 0 9.76455 0 60 7.00000 9.76455 39.5% - 0s H 0 0 8.0000000 9.76455 22.1% - 0s 0 0 9.76454 0 60 8.00000 9.76454 22.1% - 0s 0 0 9.76064 0 60 8.00000 9.76064 22.0% - 0s 0 0 9.72250 0 60 8.00000 9.72250 21.5% - 0s 0 0 9.70888 0 60 8.00000 9.70888 21.4% - 0s 0 0 9.68796 0 61 8.00000 9.68796 21.1% - 0s 0 0 9.68250 0 60 8.00000 9.68250 21.0% - 0s 0 0 9.68186 0 60 8.00000 9.68186 21.0% - 0s 0 0 9.68076 0 60 8.00000 9.68076 21.0% - 0s 0 2 9.67644 0 60 8.00000 9.67644 21.0% - 0s Cutting planes: Clique: 30 Zero half: 8 Explored 13 nodes (877 simplex iterations) in 0.22 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 8.000000000000e+00, best bound 8.000000000000e+00, gap 0.0%