Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:45:53 2012 Optimize a model with 14852 rows, 6320 columns and 50560 nonzeros Presolve time: 0.12s Presolved: 14852 rows, 6320 columns, 50667 nonzeros Variable types: 0 continuous, 6320 integer (6320 binary) Found heuristic solution: objective 46.0000000 Root relaxation: objective 2.000000e+00, 5811 iterations, 0.18 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 158 46.00000 2.00000 95.7% - 1s H 0 0 14.0000000 2.00000 85.7% - 1s H 0 0 4.0000000 2.00000 50.0% - 1s 0 0 2.00000 0 158 4.00000 2.00000 50.0% - 6s 0 0 2.00000 0 158 4.00000 2.00000 50.0% - 14s 0 0 2.00000 0 158 4.00000 2.00000 50.0% - 21s 0 0 2.00000 0 158 4.00000 2.00000 50.0% - 29s 0 0 2.00000 0 158 4.00000 2.00000 50.0% - 35s 0 0 2.00000 0 158 4.00000 2.00000 50.0% - 44s 0 2 2.00000 0 158 4.00000 2.00000 50.0% - 67s 1 3 3.00000 1 1115 4.00000 2.00000 50.0% 63825 93s 2 4 3.00000 1 613 4.00000 3.00000 25.0% 66144 129s 3 5 3.00000 2 220 4.00000 3.00000 25.0% 45388 131s 40 6 3.00000 2 1095 4.00000 3.00000 25.0% 3904 136s 45 5 cutoff 5 4.00000 3.00000 25.0% 3665 140s 55 7 3.00000 5 136 4.00000 3.00000 25.0% 3313 145s 89 9 cutoff 6 4.00000 3.00000 25.0% 2278 150s 131 5 cutoff 7 4.00000 3.00000 25.0% 1766 155s 150 2 3.00000 4 125 4.00000 3.00000 25.0% 1726 160s 155 1 cutoff 7 4.00000 3.00000 25.0% 1767 165s Cutting planes: Clique: 93 Zero half: 2 Explored 159 nodes (417990 simplex iterations) in 168.24 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%