Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:59:45 2012 Optimize a model with 3758 rows, 122 columns and 7516 nonzeros Presolve removed 2724 rows and 0 columns Presolve time: 0.14s Presolved: 1034 rows, 122 columns, 7658 nonzeros Variable types: 0 continuous, 122 integer (122 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.615979e+01, 533 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 16.15979 0 116 7.00000 16.15979 131% - 0s H 0 0 8.0000000 16.15979 102% - 0s 0 0 15.52415 0 121 8.00000 15.52415 94.1% - 0s 0 0 15.40730 0 121 8.00000 15.40730 92.6% - 0s 0 0 15.35706 0 120 8.00000 15.35706 92.0% - 0s 0 0 15.31575 0 122 8.00000 15.31575 91.4% - 0s H 0 0 9.0000000 15.31575 70.2% - 0s 0 0 15.29112 0 122 9.00000 15.29112 69.9% - 1s 0 0 15.25895 0 122 9.00000 15.25895 69.5% - 1s 0 0 15.25059 0 122 9.00000 15.25059 69.5% - 1s H 0 0 10.0000000 15.25059 52.5% - 1s 0 0 15.24429 0 122 10.00000 15.24429 52.4% - 1s 0 0 15.24357 0 122 10.00000 15.24357 52.4% - 1s 0 0 15.24323 0 122 10.00000 15.24323 52.4% - 2s 0 0 15.24315 0 122 10.00000 15.24315 52.4% - 2s 0 2 15.24271 0 122 10.00000 15.24271 52.4% - 2s Cutting planes: Clique: 145 Explored 218 nodes (19303 simplex iterations) in 3.73 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%