Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:10:50 2012 Optimize a model with 4379 rows, 132 columns and 8758 nonzeros Presolve removed 3181 rows and 0 columns Presolve time: 0.16s Presolved: 1198 rows, 132 columns, 8550 nonzeros Variable types: 0 continuous, 132 integer (132 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.702040e+01, 573 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.02040 0 127 7.00000 17.02040 143% - 0s H 0 0 8.0000000 17.02040 113% - 0s 0 0 16.43185 0 131 8.00000 16.43185 105% - 0s 0 0 16.30563 0 130 8.00000 16.30563 104% - 0s 0 0 16.25703 0 131 8.00000 16.25703 103% - 0s H 0 0 9.0000000 16.25703 80.6% - 0s 0 0 16.23665 0 130 9.00000 16.23665 80.4% - 0s 0 0 16.23084 0 130 9.00000 16.23084 80.3% - 1s 0 0 16.20853 0 130 9.00000 16.20853 80.1% - 1s 0 0 16.19763 0 131 9.00000 16.19763 80.0% - 1s 0 0 16.19503 0 132 9.00000 16.19503 79.9% - 1s 0 0 16.18523 0 132 9.00000 16.18523 79.8% - 1s H 0 0 10.0000000 16.18523 61.9% - 1s 0 0 16.18453 0 132 10.00000 16.18453 61.8% - 2s 0 0 16.18361 0 132 10.00000 16.18361 61.8% - 2s 0 0 16.18331 0 132 10.00000 16.18331 61.8% - 2s 0 2 16.18316 0 132 10.00000 16.18316 61.8% - 2s 326 78 11.42365 3 39 10.00000 13.04826 30.5% 85.0 5s Cutting planes: Clique: 141 Explored 431 nodes (35403 simplex iterations) in 5.51 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%