Build (method = -2) #dp: 916 Step-3' Graph: 62 vertices and 177 arcs (0.00s) Step-4' Graph: 5 vertices and 63 arcs (0.00s) #V4/#V3 = 0.08 #A4/#A3 = 0.36 Ready! (0.00s) Optimize a model with 25 rows, 64 columns and 188 nonzeros Presolve removed 2 rows and 2 columns Presolve time: 0.00s Presolved: 23 rows, 62 columns, 184 nonzeros Variable types: 0 continuous, 62 integer (0 binary) Found heuristic solution: objective 1999.0000000 Found heuristic solution: objective 1950.0000000 Optimize a model with 23 rows, 62 columns and 184 nonzeros Presolved: 23 rows, 62 columns, 184 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 6.300e+01 Factor NZ : 2.760e+02 Factor Ops : 4.324e+03 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 4.45195873e+03 -5.51598188e+03 2.70e+02 1.11e-16 1.54e+02 0s 1 1.44294680e+03 -1.84153804e+03 1.45e+01 2.22e-16 2.60e+01 0s 2 8.05597230e+02 3.81443429e+02 1.15e-02 4.44e-16 2.96e+00 0s 3 6.72363104e+02 5.96379593e+02 1.01e-04 3.33e-16 5.28e-01 0s 4 6.67068892e+02 6.64565478e+02 3.41e-13 3.33e-16 1.74e-02 0s 5 6.66667045e+02 6.66666577e+02 6.22e-14 2.22e-16 3.25e-06 0s 6 6.66666667e+02 6.66666667e+02 2.71e-13 1.57e-16 3.26e-12 0s Barrier solved model in 6 iterations and 0.00 seconds Optimal objective 6.66666667e+02 Root relaxation: objective 6.666667e+02, 52 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 666.66667 0 4 1950.00000 666.66667 65.8% - 0s H 0 0 667.0000000 666.66667 0.05% - 0s Explored 0 nodes (71 simplex iterations) in 0.00 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.670000000000e+02, best bound 6.670000000000e+02, gap 0.0% Preprocessing time: 0.01 seconds Gurobi run time: 0.00 seconds Total run time: 0.01 seconds Objective: 667 Solution: 33 x [2, 14, 15] 12 x [2, 7, 9] 1 x [2, 8] 1 x [2, 4, 8] 1 x [2, 8, 12] 1 x [1, 2, 8] 1 x [2, 8, 16] 63 x [9, 11, 13] 7 x [1, 13, 19] 138 x [1, 6, 14] 7 x [9, 18, 19] 91 x [8, 16, 17] 8 x [4, 14, 19] 114 x [4, 5, 20] 6 x [4, 5, 12] 10 x [3, 4, 16] 20 x [4, 12, 15] 153 x [7, 10, 12]