Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:04:06 2012 Optimize a model with 3999 rows, 127 columns and 7998 nonzeros Presolve removed 2847 rows and 0 columns Presolve time: 0.14s Presolved: 1152 rows, 127 columns, 8014 nonzeros Variable types: 0 continuous, 127 integer (127 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.664561e+01, 500 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.64561 0 127 7.00000 16.64561 138% - 0s H 0 0 8.0000000 16.64561 108% - 0s 0 0 16.23564 0 127 8.00000 16.23564 103% - 0s 0 0 16.11060 0 127 8.00000 16.11060 101% - 0s 0 0 16.00730 0 127 8.00000 16.00730 100% - 0s 0 0 15.99990 0 127 8.00000 15.99990 100% - 0s 0 0 15.98908 0 127 8.00000 15.98908 100% - 1s H 0 0 9.0000000 15.98908 77.7% - 1s 0 0 15.97654 0 127 9.00000 15.97654 77.5% - 1s 0 0 15.97191 0 127 9.00000 15.97191 77.5% - 1s 0 0 15.97133 0 127 9.00000 15.97133 77.5% - 1s H 0 0 10.0000000 15.97133 59.7% - 1s 0 0 15.97097 0 127 10.00000 15.97097 59.7% - 1s 0 0 15.97095 0 127 10.00000 15.97095 59.7% - 1s 0 2 15.97073 0 127 10.00000 15.97073 59.7% - 2s Cutting planes: Clique: 89 Explored 357 nodes (29270 simplex iterations) in 4.37 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%