Build (method = -2) #dp: 3158 Step-3' Graph: 140 vertices and 412 arcs (0.02s) Step-4' Graph: 15 vertices and 162 arcs (0.02s) #V4/#V3 = 0.11 #A4/#A3 = 0.39 Ready! (0.02s) Optimize a model with 59 rows, 163 columns and 464 nonzeros Presolve removed 4 rows and 4 columns Presolve time: 0.00s Presolved: 55 rows, 159 columns, 454 nonzeros Variable types: 0 continuous, 159 integer (46 binary) Found heuristic solution: objective 48.0000000 Optimize a model with 55 rows, 159 columns and 454 nonzeros Presolved: 55 rows, 159 columns, 454 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 1.690e+02 Factor NZ : 6.300e+02 Factor Ops : 1.190e+04 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 3.06164538e+02 -3.20812008e+02 4.90e+01 2.87e-02 4.05e+00 0s 1 6.96001637e+01 -1.08884662e+02 6.39e-14 3.33e-16 5.35e-01 0s 2 3.89509209e+01 1.82249273e+01 5.33e-14 2.22e-16 6.07e-02 0s 3 3.33829990e+01 3.30135398e+01 5.26e-14 2.22e-16 1.07e-03 0s 4 3.33333838e+01 3.33330144e+01 2.22e-14 1.37e-16 1.07e-06 0s 5 3.33333333e+01 3.33333333e+01 2.26e-14 2.22e-16 5.96e-12 0s Barrier solved model in 5 iterations and 0.00 seconds Optimal objective 3.33333333e+01 Root relaxation: objective 3.333333e+01, 120 iterations, 0.00 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 33.33333 0 4 48.00000 33.33333 30.6% - 0s H 0 0 34.0000000 33.33333 1.96% - 0s Explored 0 nodes (136 simplex iterations) in 0.01 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 3.400000000000e+01, best bound 3.400000000000e+01, gap 0.0% Preprocessing time: 0.03 seconds Gurobi run time: 0.01 seconds Total run time: 0.04 seconds Objective: 34 Solution: 1 x [26, 42, 44] 1 x [22, 39, 43] 1 x [21, 38, 41] 2 x [24, 29, 40] 2 x [17, 21, 38] 1 x [19, 36, 37] 3 x [31, 35, 35] 1 x [13, 29, 34] 4 x [8, 28, 33] 1 x [10, 10, 32] 3 x [18, 22, 30] 1 x [20, 20, 27] 1 x [7, 16, 25] 2 x [13, 14, 24] 1 x [23] 1 x [2, 6, 23] 1 x [7, 14, 22] 2 x [1, 15, 19] 2 x [3, 12, 19] 2 x [4, 11, 19] 1 x [5, 7, 9]