Gurobi 5.0.1 (linux64) logging started Mon Nov 19 07:08:24 2012 Optimize a model with 4274 rows, 131 columns and 8548 nonzeros Presolve removed 3088 rows and 0 columns Presolve time: 0.15s Presolved: 1186 rows, 131 columns, 8423 nonzeros Variable types: 0 continuous, 131 integer (131 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.700587e+01, 581 iterations, 0.03 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 17.00587 0 131 7.00000 17.00587 143% - 0s H 0 0 10.0000000 17.00587 70.1% - 0s 0 0 16.64189 0 130 10.00000 16.64189 66.4% - 0s 0 0 16.56455 0 131 10.00000 16.56455 65.6% - 0s 0 0 16.54920 0 130 10.00000 16.54920 65.5% - 0s 0 0 16.49503 0 131 10.00000 16.49503 65.0% - 1s 0 0 16.48642 0 131 10.00000 16.48642 64.9% - 1s 0 0 16.48067 0 131 10.00000 16.48067 64.8% - 1s 0 0 16.47736 0 131 10.00000 16.47736 64.8% - 1s 0 0 16.46478 0 131 10.00000 16.46478 64.6% - 1s 0 0 16.45403 0 131 10.00000 16.45403 64.5% - 1s 0 0 16.44249 0 130 10.00000 16.44249 64.4% - 2s 0 0 16.44202 0 131 10.00000 16.44202 64.4% - 2s 0 0 16.43709 0 131 10.00000 16.43709 64.4% - 2s 0 0 16.43697 0 131 10.00000 16.43697 64.4% - 2s 0 2 16.43646 0 131 10.00000 16.43646 64.4% - 3s 302 113 11.53008 18 52 10.00000 14.17892 41.8% 76.4 5s Cutting planes: Clique: 95 Explored 488 nodes (36494 simplex iterations) in 5.94 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%