Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:05:13 2012 Optimize a model with 4111 rows, 128 columns and 8222 nonzeros Presolve removed 2983 rows and 0 columns Presolve time: 0.14s Presolved: 1128 rows, 128 columns, 8061 nonzeros Variable types: 0 continuous, 128 integer (128 binary) Found heuristic solution: objective 8.0000000 Root relaxation: objective 1.652950e+01, 652 iterations, 0.04 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.52950 0 125 8.00000 16.52950 107% - 0s H 0 0 9.0000000 16.52950 83.7% - 0s 0 0 16.26569 0 126 9.00000 16.26569 80.7% - 0s 0 0 16.13872 0 128 9.00000 16.13872 79.3% - 0s 0 0 16.08542 0 128 9.00000 16.08542 78.7% - 0s 0 0 16.03803 0 128 9.00000 16.03803 78.2% - 0s 0 0 16.02107 0 128 9.00000 16.02107 78.0% - 1s 0 0 16.00237 0 128 9.00000 16.00237 77.8% - 1s 0 0 15.99815 0 128 9.00000 15.99815 77.8% - 1s 0 0 15.98730 0 128 9.00000 15.98730 77.6% - 1s 0 0 15.98592 0 128 9.00000 15.98592 77.6% - 1s 0 0 15.98389 0 128 9.00000 15.98389 77.6% - 2s 0 0 15.97257 0 127 9.00000 15.97257 77.5% - 2s 0 0 15.96994 0 128 9.00000 15.96994 77.4% - 2s 0 0 15.96705 0 127 9.00000 15.96705 77.4% - 2s 0 0 15.96678 0 127 9.00000 15.96678 77.4% - 2s 0 0 15.96498 0 128 9.00000 15.96498 77.4% - 2s 0 0 15.96428 0 128 9.00000 15.96428 77.4% - 3s 0 0 15.96428 0 128 9.00000 15.96428 77.4% - 3s 0 0 15.96427 0 128 9.00000 15.96427 77.4% - 3s 0 2 15.96095 0 128 9.00000 15.96095 77.3% - 3s 217 137 10.24405 14 49 9.00000 14.87473 65.3% 72.4 5s Cutting planes: Clique: 114 Explored 863 nodes (52219 simplex iterations) in 8.58 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%