Gurobi 5.0.1 (linux64) logging started Fri Nov 16 08:24:29 2012 Optimize a model with 13632 rows, 4160 columns and 44800 nonzeros Presolve time: 0.11s Presolved: 13632 rows, 4160 columns, 45054 nonzeros Variable types: 0 continuous, 4160 integer (4160 binary) Found heuristic solution: objective 42.0000000 Root relaxation: objective 2.000000e+00, 4270 iterations, 0.20 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 128 42.00000 2.00000 95.2% - 1s H 0 0 14.0000000 2.00000 85.7% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 2.00000 0 128 5.00000 2.00000 60.0% - 2s 0 0 2.00000 0 128 5.00000 2.00000 60.0% - 7s 0 0 2.00000 0 128 5.00000 2.00000 60.0% - 13s 0 0 2.00000 0 128 5.00000 2.00000 60.0% - 20s 0 0 2.00000 0 128 5.00000 2.00000 60.0% - 26s 0 0 2.00000 0 128 5.00000 2.00000 60.0% - 31s 0 2 2.00000 0 128 5.00000 2.00000 60.0% - 47s 1 3 3.00000 1 549 5.00000 2.00000 60.0% 43708 62s 2 4 3.00000 1 687 5.00000 3.00000 40.0% 29228 69s 3 5 3.00000 2 961 5.00000 3.00000 40.0% 19989 70s 19 7 3.00000 5 114 5.00000 3.00000 40.0% 3820 75s 30 6 3.00000 2 702 5.00000 3.00000 40.0% 2874 80s 54 24 4.00000 21 90 5.00000 3.00000 40.0% 1876 88s * 63 12 29 4.0000000 3.00000 25.0% 1614 88s 70 13 3.00000 6 116 4.00000 3.00000 25.0% 1525 90s 74 11 cutoff 8 4.00000 3.00000 25.0% 1657 95s 76 9 cutoff 5 4.00000 3.00000 25.0% 1813 100s 79 10 3.00000 4 119 4.00000 3.00000 25.0% 1888 105s 90 9 cutoff 7 4.00000 3.00000 25.0% 1916 110s 95 4 cutoff 9 4.00000 3.00000 25.0% 2003 115s 112 3 3.00000 5 118 4.00000 3.00000 25.0% 1855 120s 117 2 3.00000 5 114 4.00000 3.00000 25.0% 1953 125s Cutting planes: Clique: 211 Zero half: 4 Explored 120 nodes (314653 simplex iterations) in 127.65 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%