Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:34:48 2012 Optimize a model with 5221 rows, 144 columns and 10442 nonzeros Presolve removed 3781 rows and 0 columns Presolve time: 0.21s Presolved: 1440 rows, 144 columns, 10535 nonzeros Variable types: 0 continuous, 144 integer (144 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.797309e+01, 721 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.97309 0 140 7.00000 17.97309 157% - 0s H 0 0 8.0000000 17.97309 125% - 0s 0 0 17.66483 0 142 8.00000 17.66483 121% - 0s 0 0 17.52110 0 142 8.00000 17.52110 119% - 0s 0 0 17.50196 0 142 8.00000 17.50196 119% - 0s 0 0 17.49053 0 142 8.00000 17.49053 119% - 1s H 0 0 9.0000000 17.49053 94.3% - 1s 0 0 17.47830 0 142 9.00000 17.47830 94.2% - 1s 0 0 17.47366 0 142 9.00000 17.47366 94.2% - 1s 0 0 17.45999 0 142 9.00000 17.45999 94.0% - 1s 0 0 17.44135 0 142 9.00000 17.44135 93.8% - 1s 0 0 17.43319 0 142 9.00000 17.43319 93.7% - 2s 0 0 17.42627 0 142 9.00000 17.42627 93.6% - 2s 0 0 17.40505 0 142 9.00000 17.40505 93.4% - 2s 0 0 17.39781 0 142 9.00000 17.39781 93.3% - 2s 0 0 17.38757 0 142 9.00000 17.38757 93.2% - 2s 0 0 17.38496 0 142 9.00000 17.38496 93.2% - 3s 0 0 17.36755 0 143 9.00000 17.36755 93.0% - 3s 0 0 17.35851 0 142 9.00000 17.35851 92.9% - 3s 0 0 17.35165 0 142 9.00000 17.35165 92.8% - 3s 0 0 17.34485 0 142 9.00000 17.34485 92.7% - 3s 0 0 17.34404 0 142 9.00000 17.34404 92.7% - 4s 0 0 17.34403 0 142 9.00000 17.34403 92.7% - 4s 0 0 17.34400 0 142 9.00000 17.34400 92.7% - 4s 0 2 17.34177 0 142 9.00000 17.34177 92.7% - 5s 590 327 11.86215 27 62 9.00000 14.21841 58.0% 70.3 10s H 600 265 10.0000000 14.21841 42.2% 69.9 12s 615 271 13.72187 12 70 10.00000 14.21841 42.2% 74.9 15s 1178 257 cutoff 19 10.00000 12.95413 29.5% 80.7 20s Cutting planes: Clique: 50 Explored 1618 nodes (113456 simplex iterations) in 22.32 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%