Gurobi 5.0.1 (linux64) logging started Mon Nov 19 06:49:01 2012 Optimize a model with 2540 rows, 102 columns and 5080 nonzeros Presolve removed 1771 rows and 0 columns Presolve time: 0.07s Presolved: 769 rows, 102 columns, 5067 nonzeros Variable types: 0 continuous, 102 integer (102 binary) Found heuristic solution: objective 7.0000000 Root relaxation: objective 1.446728e+01, 408 iterations, 0.02 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 14.46728 0 97 7.00000 14.46728 107% - 0s 0 0 14.16440 0 100 7.00000 14.16440 102% - 0s 0 0 14.10642 0 101 7.00000 14.10642 102% - 0s H 0 0 8.0000000 14.10642 76.3% - 0s 0 0 14.06371 0 102 8.00000 14.06371 75.8% - 0s 0 0 14.04664 0 102 8.00000 14.04664 75.6% - 0s 0 0 14.04326 0 102 8.00000 14.04326 75.5% - 0s 0 0 14.03882 0 102 8.00000 14.03882 75.5% - 0s 0 0 14.03276 0 102 8.00000 14.03276 75.4% - 1s H 0 0 9.0000000 14.03276 55.9% - 1s 0 0 14.00374 0 102 9.00000 14.00374 55.6% - 1s 0 0 13.98668 0 102 9.00000 13.98668 55.4% - 1s 0 0 13.98592 0 102 9.00000 13.98592 55.4% - 1s 0 0 13.98561 0 102 9.00000 13.98561 55.4% - 1s 0 0 13.98526 0 102 9.00000 13.98526 55.4% - 1s 0 2 13.98403 0 102 9.00000 13.98403 55.4% - 1s Cutting planes: Clique: 76 Explored 206 nodes (13479 simplex iterations) in 2.62 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 9.000000000000e+00, best bound 9.000000000000e+00, gap 0.0%