Gurobi 5.6.3 (linux64) logging started Tue Oct 7 20:42:53 2014 Optimize a model with 9592 rows, 4831 columns and 23805 nonzeros Presolve removed 69 rows and 0 columns Presolve time: 0.13s Presolved: 9523 rows, 4831 columns, 23736 nonzeros Variable types: 1 continuous, 4830 integer (4830 binary) Found heuristic solution: objective 1.2752583 Found heuristic solution: objective 1.0254049 Found heuristic solution: objective 0.9573105 Root relaxation: objective 5.122291e-03, 6482 iterations, 0.46 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 0.00512 0 4529 0.95731 0.00512 99.5% - 0s H 0 0 0.3727096 0.00512 98.6% - 1s 0 0 0.01427 0 1282 0.37271 0.01427 96.2% - 2s 0 0 0.02820 0 927 0.37271 0.02820 92.4% - 3s H 0 0 0.3599756 0.02820 92.2% - 3s H 0 0 0.3135571 0.02820 91.0% - 3s 0 0 0.04726 0 511 0.31356 0.04726 84.9% - 3s H 0 0 0.3015443 0.04726 84.3% - 3s 0 1 0.04726 0 509 0.30154 0.04726 84.3% - 5s H 1 1 0.2845037 0.04726 83.4% 1130 5s * 73 52 38 0.2816579 0.18663 33.7% 380 9s H 74 32 0.2706939 0.18663 31.1% 375 9s * 79 27 20 0.2688883 0.18673 30.6% 362 9s * 88 26 19 0.2684375 0.21997 18.1% 339 9s * 89 24 20 0.2579246 0.21997 14.7% 336 9s Cutting planes: Gomory: 5 MIR: 3 Zero half: 1 Explored 114 nodes (54828 simplex iterations) in 9.31 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 2.579246100201e-01, best bound 2.579246100201e-01, gap 0.0%