Gurobi 5.0.1 (linux64) logging started Sat Nov 17 19:52:35 2012 Optimize a model with 91 rows, 60 columns and 285 nonzeros Presolve time: 0.00s Presolved: 91 rows, 60 columns, 285 nonzeros Variable types: 0 continuous, 60 integer (60 binary) Found heuristic solution: objective 21.0000000 Root relaxation: objective 0.000000e+00, 22 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 15 21.00000 0.00000 100% - 0s 0 0 0.84444 0 19 21.00000 0.84444 96.0% - 0s 0 0 0.89609 0 26 21.00000 0.89609 95.7% - 0s 0 0 1.02222 0 20 21.00000 1.02222 95.1% - 0s 0 0 1.02222 0 18 21.00000 1.02222 95.1% - 0s 0 0 1.09630 0 22 21.00000 1.09630 94.8% - 0s H 0 0 20.0000000 1.09630 94.5% - 0s H 0 0 17.0000000 1.09630 93.6% - 0s 0 0 1.11111 0 25 17.00000 1.11111 93.5% - 0s 0 0 1.11111 0 18 17.00000 1.11111 93.5% - 0s 0 2 1.14894 0 18 17.00000 1.14894 93.2% - 0s * 134 12 7 16.0000000 12.85714 19.6% 8.0 0s Cutting planes: Gomory: 1 Zero half: 11 Explored 159 nodes (1332 simplex iterations) in 0.03 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.600000000000e+01, best bound 1.600000000000e+01, gap 0.0%