Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:43:44 2012 Optimize a model with 1149 rows, 67 columns and 2298 nonzeros Presolve removed 825 rows and 0 columns Presolve time: 0.02s Presolved: 324 rows, 67 columns, 2070 nonzeros Variable types: 0 continuous, 67 integer (67 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.040142e+01, 150 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 10.40142 0 58 6.00000 10.40142 73.4% - 0s H 0 0 7.0000000 10.40142 48.6% - 0s 0 0 10.08025 0 65 7.00000 10.08025 44.0% - 0s H 0 0 8.0000000 10.08025 26.0% - 0s 0 0 10.02353 0 67 8.00000 10.02353 25.3% - 0s 0 0 10.01611 0 67 8.00000 10.01611 25.2% - 0s 0 0 9.99918 0 66 8.00000 9.99918 25.0% - 0s 0 0 9.99083 0 67 8.00000 9.99083 24.9% - 0s 0 0 9.98502 0 67 8.00000 9.98502 24.8% - 0s 0 0 9.98093 0 67 8.00000 9.98093 24.8% - 0s 0 0 9.97701 0 67 8.00000 9.97701 24.7% - 0s 0 0 9.97099 0 66 8.00000 9.97099 24.6% - 0s 0 0 9.96742 0 67 8.00000 9.96742 24.6% - 0s 0 0 9.96733 0 67 8.00000 9.96733 24.6% - 0s 0 0 9.96716 0 67 8.00000 9.96716 24.6% - 0s 0 0 9.96716 0 67 8.00000 9.96716 24.6% - 0s 0 2 9.96269 0 67 8.00000 9.96269 24.5% - 0s Cutting planes: Clique: 35 Zero half: 6 Explored 15 nodes (1164 simplex iterations) in 0.28 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%