Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:08 2012 Optimize a model with 474 rows, 96 columns and 948 nonzeros Presolve removed 172 rows and 0 columns Presolve time: 0.00s Presolved: 302 rows, 96 columns, 743 nonzeros Variable types: 0 continuous, 96 integer (96 binary) Found heuristic solution: objective 24.0000000 Root relaxation: objective 3.438136e+01, 183 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 34.38136 0 94 24.00000 34.38136 43.3% - 0s H 0 0 25.0000000 34.38136 37.5% - 0s 0 0 33.90670 0 96 25.00000 33.90670 35.6% - 0s 0 0 33.78008 0 96 25.00000 33.78008 35.1% - 0s H 0 0 26.0000000 33.78008 29.9% - 0s 0 0 33.72153 0 96 26.00000 33.72153 29.7% - 0s H 0 0 27.0000000 33.72153 24.9% - 0s 0 0 33.66801 0 95 27.00000 33.66801 24.7% - 0s H 0 0 29.0000000 33.66801 16.1% - 0s 0 0 33.59889 0 95 29.00000 33.59889 15.9% - 0s 0 0 33.53051 0 95 29.00000 33.53051 15.6% - 0s 0 0 33.41160 0 94 29.00000 33.41160 15.2% - 0s 0 0 33.33394 0 95 29.00000 33.33394 14.9% - 0s 0 0 33.19072 0 95 29.00000 33.19072 14.5% - 0s 0 0 33.16953 0 95 29.00000 33.16953 14.4% - 0s 0 0 33.15834 0 96 29.00000 33.15834 14.3% - 0s 0 0 33.15834 0 96 29.00000 33.15834 14.3% - 0s 0 2 33.15451 0 96 29.00000 33.15451 14.3% - 0s Cutting planes: Clique: 2 Zero half: 44 Explored 194 nodes (5071 simplex iterations) in 0.21 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.900000000000e+01, best bound 2.900000000000e+01, gap 0.0%