Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:35 2012 Optimize a model with 211 rows, 261 columns and 786 nonzeros Presolve removed 0 rows and 37 columns Presolve time: 0.00s Presolved: 211 rows, 224 columns, 749 nonzeros Variable types: 0 continuous, 224 integer (223 binary) Found heuristic solution: objective 32.0000000 Root relaxation: objective 0.000000e+00, 150 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00000 0 83 32.00000 0.00000 100% - 0s H 0 0 23.0000000 0.00000 100% - 0s H 0 0 11.0000000 0.00000 100% - 0s H 0 0 10.0000000 0.00000 100% - 0s 0 0 0.00000 0 84 10.00000 0.00000 100% - 0s H 0 0 6.0000000 0.00000 100% - 0s H 0 0 3.0000000 0.00000 100% - 0s 0 0 0.00000 0 83 3.00000 0.00000 100% - 0s 0 2 0.00000 0 83 3.00000 0.00000 100% - 0s * 21 4 20 1.0000000 1.00000 0.0% 18.0 0s Explored 22 nodes (1014 simplex iterations) in 0.10 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0%