Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:33:20 2012 Optimize a model with 5208 rows, 144 columns and 10416 nonzeros Presolve removed 3748 rows and 0 columns Presolve time: 0.20s Presolved: 1460 rows, 144 columns, 10651 nonzeros Variable types: 0 continuous, 144 integer (144 binary) Found heuristic solution: objective 6.0000000 Root relaxation: objective 1.834934e+01, 701 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 18.34934 0 143 6.00000 18.34934 206% - 0s H 0 0 7.0000000 18.34934 162% - 0s H 0 0 8.0000000 18.34934 129% - 0s 0 0 17.94010 0 143 8.00000 17.94010 124% - 0s H 0 0 9.0000000 17.94010 99.3% - 0s 0 0 17.72113 0 144 9.00000 17.72113 96.9% - 0s 0 0 17.66128 0 144 9.00000 17.66128 96.2% - 0s 0 0 17.61257 0 144 9.00000 17.61257 95.7% - 1s 0 0 17.55142 0 144 9.00000 17.55142 95.0% - 1s 0 0 17.52080 0 144 9.00000 17.52080 94.7% - 1s 0 0 17.49633 0 144 9.00000 17.49633 94.4% - 1s 0 0 17.49402 0 144 9.00000 17.49402 94.4% - 2s 0 0 17.49366 0 143 9.00000 17.49366 94.4% - 2s 0 2 17.49362 0 143 9.00000 17.49362 94.4% - 2s * 291 191 11 10.0000000 16.53259 65.3% 79.7 4s 301 189 cutoff 12 10.00000 16.53259 65.3% 79.0 5s 828 138 cutoff 19 10.00000 12.41729 24.2% 82.2 10s Cutting planes: Clique: 128 Explored 967 nodes (74936 simplex iterations) in 10.46 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+01, best bound 1.000000000000e+01, gap 0.0%