Build (method = -2) #dp: 10212 Step-3' Graph: 140 vertices and 3780 arcs (0.04s) Step-4' Graph: 140 vertices and 3780 arcs (0.04s) #V4/#V3 = 1.00 #A4/#A3 = 1.00 Ready! (0.04s) Optimize a model with 222 rows, 3781 columns and 11070 nonzeros Presolve removed 29 rows and 32 columns Presolve time: 0.04s Presolved: 193 rows, 3749 columns, 10994 nonzeros Variable types: 0 continuous, 3749 integer (806 binary) Found heuristic solution: objective 162.0000000 Found heuristic solution: objective 139.0000000 Optimize a model with 193 rows, 3749 columns and 10994 nonzeros Presolved: 193 rows, 3749 columns, 10994 nonzeros Root barrier log... Ordering time: 0.00s Barrier statistics: AA' NZ : 8.367e+03 Factor NZ : 1.254e+04 (roughly 2 MBytes of memory) Factor Ops : 1.079e+06 (less than 1 second per iteration) Threads : 1 Objective Residual Iter Primal Dual Primal Dual Compl Time 0 8.74817879e+03 -2.20187296e+04 1.34e+04 1.29e-01 6.96e+01 0s 1 2.37161948e+03 -1.17699599e+04 2.38e+03 5.55e-16 1.32e+01 0s 2 4.55712266e+02 -5.43414061e+03 1.39e+02 6.66e-16 1.39e+00 0s 3 2.73920675e+02 -1.43738819e+03 1.52e+01 8.88e-16 2.68e-01 0s 4 1.91034553e+02 -4.19999019e+02 3.02e+00 4.79e-16 8.59e-02 0s 5 1.66275955e+02 -2.09802029e+02 2.01e+00 2.56e-16 5.23e-02 0s 6 1.33230729e+02 -8.06500518e+01 1.13e+00 2.22e-16 2.95e-02 0s 7 1.14978647e+02 -3.80681164e+01 7.64e-01 2.22e-16 2.10e-02 0s 8 9.32933606e+01 -1.44535562e+01 4.05e-01 3.21e-16 1.46e-02 0s 9 8.40031322e+01 1.32382405e+01 2.82e-01 2.22e-16 9.57e-03 0s 10 7.39872686e+01 3.64566948e+01 1.40e-01 2.22e-16 5.05e-03 0s 11 7.03939490e+01 4.88499126e+01 8.31e-02 2.22e-16 2.89e-03 0s 12 6.84882026e+01 5.47959477e+01 5.58e-02 2.22e-16 1.83e-03 0s 13 6.66979975e+01 5.93966338e+01 3.34e-02 2.22e-16 9.75e-04 0s 14 6.60833540e+01 6.01718119e+01 2.21e-02 2.22e-16 7.88e-04 0s 15 6.57813206e+01 6.25638518e+01 1.52e-02 2.22e-16 4.29e-04 0s 16 6.53843164e+01 6.40254983e+01 4.78e-03 2.22e-16 1.80e-04 0s 17 6.52716859e+01 6.45937145e+01 2.40e-03 2.42e-16 9.00e-05 0s 18 6.52682456e+01 6.46814337e+01 2.25e-03 2.22e-16 7.79e-05 0s 19 6.52362606e+01 6.49379577e+01 1.28e-03 2.54e-16 3.96e-05 0s 20 6.51767137e+01 6.51271767e+01 7.54e-05 2.51e-16 6.57e-06 0s 21 6.51733374e+01 6.51732872e+01 2.06e-13 2.93e-16 6.66e-09 0s 22 6.51733333e+01 6.51733333e+01 2.77e-13 3.33e-16 6.68e-15 0s Barrier solved model in 22 iterations and 0.08 seconds Optimal objective 6.51733333e+01 Root relaxation: objective 6.517333e+01, 3321 iterations, 0.13 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 65.17333 0 57 139.00000 65.17333 53.1% - 0s H 0 0 66.0000000 65.17333 1.25% - 0s Explored 0 nodes (5970 simplex iterations) in 0.61 seconds Thread count was 1 (of 8 available processors) Optimal solution found (tolerance 0.00e+00) Best objective 6.600000000000e+01, best bound 6.600000000000e+01, gap 0.0% Preprocessing time: 0.06 seconds Gurobi run time: 0.61 seconds Total run time: 0.68 seconds Objective: 66 Solution: 1 x [4, 8, 8, 23, 82] 1 x [11, 11, 22, 82] 1 x [42, 81] 2 x [43, 80] 2 x [7, 37, 79] 2 x [44, 78] 1 x [15, 30, 78] 2 x [20, 25, 77] 1 x [3, 15, 16, 18, 76] 2 x [47, 75] 1 x [3, 4, 43, 74] 2 x [18, 31, 74] 2 x [22, 27, 74] 1 x [2, 4, 12, 18, 18, 74] 3 x [22, 28, 73] 1 x [49, 72] 1 x [38, 72] 2 x [24, 26, 71] 1 x [50, 70] 1 x [4, 23, 25, 70] 1 x [11, 43, 69] 1 x [9, 21, 24, 68] 1 x [54, 67] 3 x [55, 66] 1 x [1, 54, 66] 3 x [56, 65] 1 x [1, 55, 65] 1 x [57, 64] 1 x [5, 17, 40, 64] 3 x [21, 39, 63] 1 x [26, 32, 63] 4 x [58, 62] 1 x [2, 12, 48, 61] 1 x [26, 60] 1 x [9, 52, 59] 1 x [1, 5, 6, 51, 59] 1 x [3, 15, 46, 59] 2 x [14, 19, 30, 59] 1 x [10, 10, 45, 58] 1 x [30, 37, 53] 1 x [35, 51] 1 x [35, 35, 51] 1 x [1, 34, 41, 46] 1 x [40, 41, 43] 1 x [10, 19, 29, 29, 36] 1 x [2, 4, 9, 13, 15, 32, 33]