Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:26:27 2012 Optimize a model with 237 rows, 192 columns and 782 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 237 rows, 191 columns, 781 nonzeros Variable types: 0 continuous, 191 integer (190 binary) Found heuristic solution: objective 47.0000000 Root relaxation: objective 0.000000e+00, 115 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 70 47.00000 0.00000 100% - 0s H 0 0 40.0000000 0.00000 100% - 0s 0 0 0.46809 0 72 40.00000 0.46809 98.8% - 0s 0 0 0.93802 0 75 40.00000 0.93802 97.7% - 0s H 0 0 38.0000000 0.93802 97.5% - 0s H 0 0 30.0000000 0.93802 96.9% - 0s 0 0 0.93918 0 76 30.00000 0.93918 96.9% - 0s 0 0 0.93918 0 76 30.00000 0.93918 96.9% - 0s H 0 0 26.0000000 0.93918 96.4% - 0s H 0 0 24.0000000 0.93918 96.1% - 0s 0 2 0.94849 0 76 24.00000 0.94849 96.0% - 0s * 24 20 15 19.0000000 3.29397 82.7% 31.7 0s * 45 28 14 18.0000000 3.32734 81.5% 25.5 0s Cutting planes: Gomory: 3 Zero half: 1 Explored 368 nodes (7618 simplex iterations) in 0.28 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%