Build (method = -2) #dp: 1441 Step-3' Graph: 71 vertices and 204 arcs (0.01s) Step-4' Graph: 21 vertices and 104 arcs (0.01s) #V4/#V3 = 0.30 #A4/#A3 = 0.51 Ready! (0.01s) Optimize a model with 30 rows, 105 columns and 283 nonzeros Presolve removed 5 rows and 9 columns Presolve time: 0.00s Presolved: 25 rows, 96 columns, 265 nonzeros Variable types: 0 continuous, 96 integer (0 binary) Found heuristic solution: objective 907.0000000 Found heuristic solution: objective 757.0000000 Optimize a model with 25 rows, 96 columns and 265 nonzeros Presolved: 25 rows, 96 columns, 265 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.230e+02 Factor NZ : 2.590e+02 Factor Ops : 3.281e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 6.27861887e+03 -1.85993748e+04 7.72e+03 2.22e-16 5.35e+02 0s 1 1.64453584e+03 -7.56621587e+03 9.94e+02 5.55e-16 8.41e+01 0s 2 5.97386079e+02 -1.75470205e+03 2.84e-02 6.66e-16 1.17e+01 0s 3 3.01536720e+02 -1.73419373e+02 1.94e-13 2.22e-16 2.36e+00 0s 4 1.71836312e+02 2.93362294e+01 1.21e-13 2.22e-16 7.09e-01 0s 5 1.57817231e+02 1.00363152e+02 1.29e-13 2.22e-16 2.86e-01 0s 6 1.43623015e+02 1.40947721e+02 1.42e-13 1.71e-16 1.33e-02 0s 7 1.42857231e+02 1.42856842e+02 4.25e-13 3.33e-16 1.94e-06 0s 8 1.42857143e+02 1.42857143e+02 1.07e-13 1.27e-16 1.94e-09 0s Barrier solved model in 8 iterations and 0.00 seconds Optimal objective 1.42857143e+02 Root relaxation: objective 1.428571e+02, 63 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 142.85714 0 16 757.00000 142.85714 81.1% - 0s H 0 0 143.0000000 142.85714 0.10% - 0s Explored 0 nodes (85 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.430000000000e+02, best bound 1.430000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 143 Solution: 36 x [1, 1, 1, 3, 6, 7, 8] 1 x [1, 1, 3, 6, 6, 7, 8] 6 x [1, 1, 2, 5, 6, 6, 7] 2 x [1, 1, 2, 3, 6, 6, 7] 23 x [1, 3, 5, 6, 7, 7, 8] 63 x [2, 3, 4, 5, 6, 8, 9] 1 x [1, 1, 2, 3, 6, 9] 11 x [1, 1, 2, 2, 3, 6, 9]