Gurobi 5.0.1 (linux64) logging started Tue Nov 20 05:49:28 2012 Optimize a model with 503 rows, 102 columns and 1006 nonzeros Presolve removed 173 rows and 0 columns Presolve time: 0.00s Presolved: 330 rows, 102 columns, 816 nonzeros Variable types: 0 continuous, 102 integer (102 binary) Found heuristic solution: objective 33.0000000 Root relaxation: objective 3.771429e+01, 206 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 37.71429 0 101 33.00000 37.71429 14.3% - 0s 0 0 37.00723 0 100 33.00000 37.00723 12.1% - 0s 0 0 36.41366 0 101 33.00000 36.41366 10.3% - 0s 0 0 36.20506 0 101 33.00000 36.20506 9.71% - 0s 0 0 36.04331 0 101 33.00000 36.04331 9.22% - 0s 0 0 35.99810 0 100 33.00000 35.99810 9.09% - 0s 0 0 35.90196 0 99 33.00000 35.90196 8.79% - 0s 0 0 35.80192 0 101 33.00000 35.80192 8.49% - 0s 0 0 35.76656 0 101 33.00000 35.76656 8.38% - 0s 0 0 35.74277 0 98 33.00000 35.74277 8.31% - 0s 0 0 35.69883 0 100 33.00000 35.69883 8.18% - 0s 0 0 35.64918 0 100 33.00000 35.64918 8.03% - 0s 0 0 35.60226 0 101 33.00000 35.60226 7.89% - 0s 0 0 35.56134 0 102 33.00000 35.56134 7.76% - 0s 0 0 35.52233 0 102 33.00000 35.52233 7.64% - 0s 0 0 35.48471 0 102 33.00000 35.48471 7.53% - 0s 0 0 35.47053 0 102 33.00000 35.47053 7.49% - 0s 0 0 35.47053 0 102 33.00000 35.47053 7.49% - 0s 0 2 35.46972 0 101 33.00000 35.46972 7.48% - 0s Cutting planes: Clique: 2 Zero half: 45 Explored 23 nodes (2050 simplex iterations) in 0.17 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 3.300000000000e+01, best bound 3.300000000000e+01, gap 0.0%