Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:28:34 2012 Optimize a model with 249 rows, 280 columns and 900 nonzeros Presolve removed 0 rows and 29 columns Presolve time: 0.00s Presolved: 249 rows, 251 columns, 871 nonzeros Variable types: 0 continuous, 251 integer (250 binary) Found heuristic solution: objective 40.0000000 Root relaxation: objective 0.000000e+00, 160 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 98 40.00000 0.00000 100% - 0s H 0 0 26.0000000 0.00000 100% - 0s H 0 0 21.0000000 0.00000 100% - 0s H 0 0 17.0000000 0.00000 100% - 0s 0 0 0.12539 0 100 17.00000 0.12539 99.3% - 0s H 0 0 15.0000000 0.12539 99.2% - 0s H 0 0 8.0000000 0.12539 98.4% - 0s H 0 0 6.0000000 0.12539 97.9% - 0s 0 0 0.69466 0 108 6.00000 0.69466 88.4% - 0s H 0 0 5.0000000 0.69466 86.1% - 0s H 0 0 4.0000000 0.69466 82.6% - 0s H 0 0 2.0000000 0.69466 65.3% - 0s 0 0 0.77916 0 103 2.00000 0.77916 61.0% - 0s 0 0 0.77916 0 19 2.00000 0.77916 61.0% - 0s 0 0 0.77916 0 23 2.00000 0.77916 61.0% - 0s 0 0 0.96257 0 13 2.00000 0.96257 51.9% - 0s Cutting planes: Gomory: 1 MIR: 1 Explored 0 nodes (749 simplex iterations) in 0.06 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.000000000000e+00, best bound 2.000000000000e+00, gap 0.0%