Gurobi 5.0.1 (linux64) logging started Fri Nov 16 14:55:30 2012 Optimize a model with 22419 rows, 5852 columns and 72730 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.77s Presolved: 22493 rows, 5850 columns, 77916 nonzeros Variable types: 0 continuous, 5850 integer (5850 binary) Found heuristic solution: objective 76.0000000 Root relaxation: objective 2.000000e+00, 4307 iterations, 0.21 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 2.00000 0 152 76.00000 2.00000 97.4% - 1s H 0 0 5.0000000 2.00000 60.0% - 1s 0 0 3.00000 0 2030 5.00000 3.00000 40.0% - 21s 0 0 3.00000 0 2004 5.00000 3.00000 40.0% - 23s 0 0 3.00000 0 2018 5.00000 3.00000 40.0% - 25s 0 0 3.00000 0 2018 5.00000 3.00000 40.0% - 33s 0 2 3.00000 0 2018 5.00000 3.00000 40.0% - 64s 1 3 3.00000 1 1625 5.00000 3.00000 40.0% 28404 65s * 32 6 26 4.0000000 3.00000 25.0% 1175 67s Cutting planes: Clique: 49 Zero half: 1 Explored 33 nodes (117774 simplex iterations) in 77.10 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%