Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:46:14 2012 Optimize a model with 2064 rows, 92 columns and 4128 nonzeros Presolve removed 1467 rows and 0 columns Presolve time: 0.06s Presolved: 597 rows, 92 columns, 4026 nonzeros Variable types: 0 continuous, 92 integer (92 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.349389e+01, 311 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 13.49389 0 83 7.00000 13.49389 92.8% - 0s H 0 0 8.0000000 13.49389 68.7% - 0s 0 0 13.25559 0 91 8.00000 13.25559 65.7% - 0s 0 0 13.19871 0 91 8.00000 13.19871 65.0% - 0s 0 0 13.17158 0 90 8.00000 13.17158 64.6% - 0s 0 0 13.15307 0 91 8.00000 13.15307 64.4% - 0s 0 0 13.15016 0 92 8.00000 13.15016 64.4% - 0s 0 0 13.14621 0 92 8.00000 13.14621 64.3% - 0s 0 0 13.14549 0 92 8.00000 13.14549 64.3% - 0s H 0 0 9.0000000 13.14549 46.1% - 0s 0 0 13.14546 0 92 9.00000 13.14546 46.1% - 0s 0 2 13.14457 0 92 9.00000 13.14457 46.1% - 0s Cutting planes: Clique: 41 Zero half: 5 Explored 119 nodes (7212 simplex iterations) in 1.08 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%