Gurobi 5.0.1 (linux64) logging started Sun Nov 18 03:22:59 2012 Optimize a model with 215 rows, 177 columns and 712 nonzeros Presolve removed 0 rows and 1 columns Presolve time: 0.00s Presolved: 215 rows, 176 columns, 711 nonzeros Variable types: 0 continuous, 176 integer (175 binary) Found heuristic solution: objective 44.0000000 Root relaxation: objective 0.000000e+00, 119 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 66 44.00000 0.00000 100% - 0s H 0 0 39.0000000 0.00000 100% - 0s H 0 0 37.0000000 0.00000 100% - 0s H 0 0 36.0000000 0.00000 100% - 0s 0 0 0.48535 0 67 36.00000 0.48535 98.7% - 0s H 0 0 35.0000000 0.48535 98.6% - 0s 0 0 1.00000 0 70 35.00000 1.00000 97.1% - 0s H 0 0 33.0000000 1.00000 97.0% - 0s H 0 0 30.0000000 1.00000 96.7% - 0s 0 0 1.00000 0 68 30.00000 1.00000 96.7% - 0s H 0 0 28.0000000 1.00000 96.4% - 0s 0 0 1.00000 0 70 28.00000 1.00000 96.4% - 0s 0 0 1.00000 0 68 28.00000 1.00000 96.4% - 0s H 0 0 26.0000000 1.00000 96.2% - 0s H 0 0 25.0000000 1.00000 96.0% - 0s H 0 0 22.0000000 1.00000 95.5% - 0s 0 2 1.00000 0 68 22.00000 1.00000 95.5% - 0s H 27 24 19.0000000 2.31826 87.8% 37.9 0s * 36 28 23 18.0000000 2.31826 87.1% 31.1 0s H 196 110 17.0000000 4.56091 73.2% 27.3 0s * 221 103 12 16.0000000 4.56091 71.5% 27.0 0s * 669 154 24 14.0000000 7.01282 49.9% 24.1 0s Explored 762 nodes (18628 simplex iterations) in 0.54 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 1.400000000000e+01, best bound 1.400000000000e+01, gap 0.0%