Gurobi 5.0.1 (linux64) logging started Tue Nov 20 12:32:19 2012 Optimize a model with 346 rows, 116 columns and 692 nonzeros Presolve removed 60 rows and 2 columns Presolve time: 0.00s Presolved: 286 rows, 114 columns, 607 nonzeros Variable types: 0 continuous, 114 integer (114 binary) Found heuristic solution: objective 41.0000000 Root relaxation: objective 4.975000e+01, 139 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 49.75000 0 95 41.00000 49.75000 21.3% - 0s 0 0 48.42857 0 111 41.00000 48.42857 18.1% - 0s 0 0 47.79630 0 111 41.00000 47.79630 16.6% - 0s 0 0 47.18750 0 107 41.00000 47.18750 15.1% - 0s 0 0 46.52941 0 108 41.00000 46.52941 13.5% - 0s 0 0 46.27500 0 113 41.00000 46.27500 12.9% - 0s 0 0 45.97386 0 113 41.00000 45.97386 12.1% - 0s 0 0 45.86758 0 112 41.00000 45.86758 11.9% - 0s 0 0 45.75276 0 109 41.00000 45.75276 11.6% - 0s 0 0 45.69201 0 109 41.00000 45.69201 11.4% - 0s H 0 0 42.0000000 45.69201 8.79% - 0s 0 0 45.68224 0 109 42.00000 45.68224 8.77% - 0s 0 0 45.68224 0 109 42.00000 45.68224 8.77% - 0s 0 2 45.67630 0 108 42.00000 45.67630 8.75% - 0s * 41 12 10 43.0000000 45.20069 5.12% 28.6 0s Cutting planes: Gomory: 1 Zero half: 65 Explored 68 nodes (2322 simplex iterations) in 0.11 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.300000000000e+01, best bound 4.300000000000e+01, gap 0.0%