Build (method = -2) #dp: 1178 Step-3' Graph: 61 vertices and 175 arcs (0.00s) Step-4' Graph: 20 vertices and 93 arcs (0.01s) #V4/#V3 = 0.33 #A4/#A3 = 0.53 Ready! (0.01s) Optimize a model with 29 rows, 94 columns and 251 nonzeros Presolve removed 6 rows and 11 columns Presolve time: 0.00s Presolved: 23 rows, 83 columns, 229 nonzeros Variable types: 0 continuous, 83 integer (0 binary) Found heuristic solution: objective 998.0000000 Found heuristic solution: objective 917.0000000 Optimize a model with 23 rows, 83 columns and 229 nonzeros Presolved: 23 rows, 83 columns, 229 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.080e+02 Factor NZ : 2.360e+02 Factor Ops : 3.004e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 5.92839360e+03 -1.47631449e+04 5.72e+03 2.22e-16 4.91e+02 0s 1 1.51849369e+03 -6.31469278e+03 6.41e+02 6.66e-16 7.51e+01 0s 2 5.94457875e+02 -1.03375924e+03 9.66e-13 8.33e-16 9.30e+00 0s 3 2.54419211e+02 -2.74845059e+01 2.40e-13 3.33e-16 1.61e+00 0s 4 1.84955821e+02 1.19424872e+02 1.35e-13 1.64e-16 3.74e-01 0s 5 1.67401759e+02 1.64525157e+02 2.01e-13 3.33e-16 1.64e-02 0s 6 1.66666914e+02 1.66666521e+02 2.90e-13 3.33e-16 2.25e-06 0s 7 1.66666667e+02 1.66666667e+02 1.37e-13 2.22e-16 2.25e-12 0s Barrier solved model in 7 iterations and 0.00 seconds Optimal objective 1.66666667e+02 Root relaxation: objective 1.666667e+02, 55 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 166.66667 0 9 917.00000 166.66667 81.8% - 0s H 0 0 167.0000000 166.66667 0.20% - 0s Explored 0 nodes (68 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 1.670000000000e+02, best bound 1.670000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.02 seconds Objective: 167 Solution: 7 x [1, 1, 6, 6, 7, 8] 72 x [1, 3, 3, 5, 7, 7] 3 x [2, 3, 3, 5, 5, 7] 6 x [1, 4, 5, 6, 6, 7] 2 x [1, 2, 5, 6, 6, 7] 22 x [1, 5, 5, 6, 6, 9] 54 x [1, 1, 2, 4, 6, 9] 1 x [1, 1, 6, 7]