Gurobi 5.0.1 (linux64) logging started Fri Nov 16 16:21:34 2012 Optimize a model with 12899 rows, 5700 columns and 44023 nonzeros Presolve removed 1127 rows and 2 columns Presolve time: 0.61s Presolved: 11847 rows, 5698 columns, 46559 nonzeros Variable types: 0 continuous, 5698 integer (5698 binary) Found heuristic solution: objective 75.0000000 Root relaxation: objective 3.000000e+00, 7673 iterations, 1.42 seconds Total elapsed time = 6.04s Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 3.00000 0 241 75.00000 3.00000 96.0% - 6s H 0 0 4.0000000 3.00000 25.0% - 6s 0 0 3.00000 0 2303 4.00000 3.00000 25.0% - 9s 0 0 3.00000 0 183 4.00000 3.00000 25.0% - 16s 0 0 3.00000 0 159 4.00000 3.00000 25.0% - 24s 0 0 3.00000 0 214 4.00000 3.00000 25.0% - 31s 0 0 3.00000 0 138 4.00000 3.00000 25.0% - 37s 0 0 3.00000 0 113 4.00000 3.00000 25.0% - 42s 0 0 3.00000 0 2084 4.00000 3.00000 25.0% - 50s 0 0 3.00000 0 198 4.00000 3.00000 25.0% - 61s 0 2 3.00000 0 197 4.00000 3.00000 25.0% - 74s 2 3 3.00000 1 198 4.00000 3.00000 25.0% 3396 77s 4 4 3.00000 1 122 4.00000 3.00000 25.0% 1698 91s 5 5 3.00000 1 129 4.00000 3.00000 25.0% 1358 99s 6 6 3.00000 1 115 4.00000 3.00000 25.0% 1132 103s 7 6 3.00000 1 140 4.00000 3.00000 25.0% 970 108s 8 7 3.00000 1 118 4.00000 3.00000 25.0% 849 110s 11 9 3.00000 1 100 4.00000 3.00000 25.0% 617 115s 16 14 3.00000 10 117 4.00000 3.00000 25.0% 12024 122s 19 14 infeasible 11 4.00000 3.00000 25.0% 10504 125s 77 7 3.00000 17 1901 4.00000 3.00000 25.0% 2796 189s 80 6 3.00000 17 159 4.00000 3.00000 25.0% 2739 191s 84 6 3.00000 16 2334 4.00000 3.00000 25.0% 2663 287s 107 5 3.00000 15 967 4.00000 3.00000 25.0% 2244 300s Cutting planes: Zero half: 10 Explored 108 nodes (408475 simplex iterations) in 300.03 seconds Thread count was 1 (of 16 available processors) Time limit reached Best objective 4.000000000000e+00, best bound 3.000000000000e+00, gap 25.0000%