Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:25:27 2012 Optimize a model with 4938 rows, 140 columns and 9876 nonzeros Presolve removed 3565 rows and 0 columns Presolve time: 0.19s Presolved: 1373 rows, 140 columns, 9974 nonzeros Variable types: 0 continuous, 140 integer (140 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.782595e+01, 714 iterations, 0.05 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.82595 0 139 7.00000 17.82595 155% - 0s H 0 0 8.0000000 17.82595 123% - 0s 0 0 17.14541 0 139 8.00000 17.14541 114% - 0s H 0 0 9.0000000 17.14541 90.5% - 0s 0 0 17.09158 0 140 9.00000 17.09158 89.9% - 0s 0 0 17.00620 0 140 9.00000 17.00620 89.0% - 0s 0 0 16.97794 0 140 9.00000 16.97794 88.6% - 1s 0 0 16.96020 0 140 9.00000 16.96020 88.4% - 1s 0 0 16.95698 0 139 9.00000 16.95698 88.4% - 1s 0 0 16.95439 0 139 9.00000 16.95439 88.4% - 1s 0 0 16.95058 0 139 9.00000 16.95058 88.3% - 1s 0 0 16.94253 0 139 9.00000 16.94253 88.3% - 2s 0 0 16.93940 0 140 9.00000 16.93940 88.2% - 2s 0 0 16.93886 0 140 9.00000 16.93886 88.2% - 2s 0 0 16.92880 0 140 9.00000 16.92880 88.1% - 2s 0 0 16.92407 0 139 9.00000 16.92407 88.0% - 2s 0 0 16.91397 0 140 9.00000 16.91397 87.9% - 3s 0 0 16.91200 0 140 9.00000 16.91200 87.9% - 3s 0 0 16.91162 0 140 9.00000 16.91162 87.9% - 3s 0 0 16.91159 0 140 9.00000 16.91159 87.9% - 3s 0 2 16.91137 0 140 9.00000 16.91137 87.9% - 4s 70 64 13.88809 1 67 9.00000 16.79372 86.6% 98.1 5s H 356 173 10.0000000 15.48332 54.8% 70.6 6s Cutting planes: Clique: 164 Explored 778 nodes (55944 simplex iterations) in 9.79 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%