Gurobi 5.0.1 (linux64) logging started Sun Nov 18 05:37:40 2012 Optimize a model with 293 rows, 316 columns and 1046 nonzeros Presolve removed 0 rows and 26 columns Presolve time: 0.00s Presolved: 293 rows, 290 columns, 1020 nonzeros Variable types: 0 continuous, 290 integer (289 binary) Found heuristic solution: objective 48.0000000 Root relaxation: objective 0.000000e+00, 204 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 0 127 48.00000 0.00000 100% - 0s H 0 0 31.0000000 0.00000 100% - 0s H 0 0 25.0000000 0.00000 100% - 0s 0 0 0.27204 0 129 25.00000 0.27204 98.9% - 0s H 0 0 21.0000000 0.27204 98.7% - 0s 0 0 0.79272 0 137 21.00000 0.79272 96.2% - 0s H 0 0 18.0000000 0.79272 95.6% - 0s 0 0 0.79333 0 138 18.00000 0.79333 95.6% - 0s 0 0 0.79333 0 138 18.00000 0.79333 95.6% - 0s H 0 0 14.0000000 0.79333 94.3% - 0s 0 2 0.79340 0 138 14.00000 0.79340 94.3% - 0s H 27 18 4.0000000 1.00000 75.0% 38.7 0s Cutting planes: Gomory: 4 Mod-K: 2 Explored 192 nodes (5974 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.000000000000e+00, best bound 4.000000000000e+00, gap 0.0%