Gurobi 5.0.1 (linux64) logging started Sat Nov 17 23:41:16 2012 Optimize a model with 185 rows, 134 columns and 594 nonzeros Presolve time: 0.00s Presolved: 185 rows, 134 columns, 594 nonzeros Variable types: 0 continuous, 134 integer (134 binary) Found heuristic solution: objective 44.0000000 Root relaxation: objective 0.000000e+00, 72 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 42 44.00000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s H 0 0 35.0000000 0.00000 100% - 0s 0 0 0.77778 0 46 35.00000 0.77778 97.8% - 0s 0 0 0.91304 0 45 35.00000 0.91304 97.4% - 0s 0 0 0.95238 0 47 35.00000 0.95238 97.3% - 0s 0 0 0.98361 0 51 35.00000 0.98361 97.2% - 0s 0 0 0.98947 0 52 35.00000 0.98947 97.2% - 0s 0 0 0.98947 0 52 35.00000 0.98947 97.2% - 0s H 0 0 26.0000000 0.98947 96.2% - 0s 0 2 0.98947 0 52 26.00000 0.98947 96.2% - 0s * 21 21 15 21.0000000 5.44828 74.1% 22.2 0s * 40 26 11 20.0000000 5.57447 72.1% 18.1 0s * 100 41 8 18.0000000 9.87826 45.1% 17.3 0s Cutting planes: Gomory: 1 Zero half: 6 Explored 269 nodes (3798 simplex iterations) in 0.15 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.800000000000e+01, best bound 1.800000000000e+01, gap 0.0%