Ross
119 lines
8.3 KiB
Plaintext
119 lines
8.3 KiB
Plaintext
Solver command line: ['/usr/bin/cbc', '-seconds', '1200', '-allow', '4000', '-printingOptions', 'all', '-import', '/tmp/tmpeun6jpa7.pyomo.lp', '-stat=1', '-solve', '-solu', '/tmp/tmpeun6jpa7.pyomo.soln']
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Welcome to the CBC MILP Solver
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Version: 2.9.9
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Build Date: Aug 7 2019
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command line - /usr/bin/cbc -seconds 1200 -allow 4000 -printingOptions all -import /tmp/tmpeun6jpa7.pyomo.lp -stat=1 -solve -solu /tmp/tmpeun6jpa7.pyomo.soln (default strategy 1)
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seconds was changed from 1e+100 to 1200
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allowableGap was changed from 1e-10 to 4000
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Option for printingOptions changed from normal to all
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Presolve 57035 (-82138) rows, 23862 (-89251) columns and 226642 (-883011) elements
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Statistics for presolved model
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Original problem has 112272 integers (112112 of which binary)
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Presolved problem has 23696 integers (23696 of which binary)
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==== 23751 zero objective 2 different
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23751 variables have objective of 0
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111 variables have objective of 2000
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==== absolute objective values 2 different
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23751 variables have objective of 0
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111 variables have objective of 2000
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==== for integers 23696 zero objective 1 different
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23696 variables have objective of 0
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==== for integers absolute objective values 1 different
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23696 variables have objective of 0
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===== end objective counts
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Problem has 57035 rows, 23862 columns (111 with objective) and 226642 elements
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There are 111 singletons with objective 988 singletons with no objective
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Column breakdown:
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110 of type 0.0->inf, 56 of type 0.0->up, 0 of type lo->inf,
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0 of type lo->up, 0 of type free, 0 of type fixed,
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0 of type -inf->0.0, 0 of type -inf->up, 23696 of type 0.0->1.0
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Row breakdown:
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2843 of type E 0.0, 676 of type E 1.0, 0 of type E -1.0,
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289 of type E other, 0 of type G 0.0, 0 of type G 1.0,
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231 of type G other, 2788 of type L 0.0, 48596 of type L 1.0,
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1612 of type L other, 0 of type Range 0.0->1.0, 0 of type Range other,
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0 of type Free
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Continuous objective value is 497995 - 22.34 seconds
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Cgl0002I 82402 variables fixed
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Cgl0003I 0 fixed, 55 tightened bounds, 34225 strengthened rows, 50251 substitutions
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Cgl0004I processed model has 17402 rows, 14104 columns (13939 integer (13939 of which binary)) and 89454 elements
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Cbc0038I Initial state - 511 integers unsatisfied sum - 146.075
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Cbc0038I Pass 1: (33.84 seconds) suminf. 63.26415 (238) obj. 530335 iterations 2863
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Cbc0038I Pass 2: (33.87 seconds) suminf. 52.41969 (214) obj. 526335 iterations 226
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Cbc0038I Pass 3: (33.90 seconds) suminf. 51.56248 (211) obj. 526335 iterations 61
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Cbc0038I Pass 4: (33.93 seconds) suminf. 51.15178 (211) obj. 526335 iterations 79
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Cbc0038I Pass 5: (33.96 seconds) suminf. 45.85375 (210) obj. 529354 iterations 94
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Cbc0038I Pass 6: (33.99 seconds) suminf. 45.71180 (212) obj. 529354 iterations 41
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Cbc0038I Pass 7: (34.04 seconds) suminf. 35.87037 (187) obj. 529354 iterations 322
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Cbc0038I Pass 8: (34.08 seconds) suminf. 33.85554 (195) obj. 526761 iterations 264
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Cbc0038I Pass 9: (34.11 seconds) suminf. 33.14549 (176) obj. 526830 iterations 105
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Cbc0038I Pass 10: (34.14 seconds) suminf. 31.13224 (172) obj. 526830 iterations 115
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Cbc0038I Pass 11: (34.21 seconds) suminf. 30.55620 (160) obj. 529691 iterations 562
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Cbc0038I Pass 12: (34.25 seconds) suminf. 28.64178 (153) obj. 534012 iterations 205
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Cbc0038I Pass 13: (34.29 seconds) suminf. 29.16979 (146) obj. 527774 iterations 240
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Cbc0038I Pass 14: (34.31 seconds) suminf. 28.35432 (144) obj. 523774 iterations 4
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Cbc0038I Pass 15: (34.37 seconds) suminf. 25.43149 (140) obj. 525658 iterations 341
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Cbc0038I Pass 16: (34.39 seconds) suminf. 25.05606 (138) obj. 525658 iterations 13
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Cbc0038I Pass 17: (34.42 seconds) suminf. 25.05606 (133) obj. 525988 iterations 132
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Cbc0038I Pass 18: (34.45 seconds) suminf. 25.05606 (133) obj. 525988 iterations 6
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Cbc0038I Pass 19: (34.52 seconds) suminf. 25.01303 (143) obj. 526804 iterations 492
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Cbc0038I Pass 20: (34.55 seconds) suminf. 24.96852 (141) obj. 526288 iterations 33
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Cbc0038I Pass 21: (34.63 seconds) suminf. 22.73642 (133) obj. 527464 iterations 691
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Cbc0038I Pass 22: (34.64 seconds) suminf. 22.73642 (133) obj. 527464 iterations 0
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Cbc0038I Pass 23: (34.69 seconds) suminf. 22.27803 (129) obj. 527464 iterations 346
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Cbc0038I Pass 24: (34.72 seconds) suminf. 22.01961 (123) obj. 527464 iterations 76
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Cbc0038I Pass 25: (34.79 seconds) suminf. 22.04026 (123) obj. 526572 iterations 541
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Cbc0038I Pass 26: (34.82 seconds) suminf. 22.04026 (121) obj. 526572 iterations 47
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Cbc0038I Pass 27: (34.86 seconds) suminf. 22.15035 (111) obj. 527464 iterations 339
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Cbc0038I Pass 28: (34.89 seconds) suminf. 22.04689 (111) obj. 527464 iterations 91
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Cbc0038I Pass 29: (34.95 seconds) suminf. 22.01936 (123) obj. 526475 iterations 455
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Cbc0038I Pass 30: (34.98 seconds) suminf. 21.93681 (123) obj. 526475 iterations 40
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Cbc0038I No solution found this major pass
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Cbc0038I Before mini branch and bound, 13026 integers at bound fixed and 50 continuous
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Cbc0038I Full problem 17402 rows 14104 columns, reduced to 796 rows 583 columns
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Cbc0038I Mini branch and bound did not improve solution (35.07 seconds)
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Cbc0038I After 37.37 seconds - Feasibility pump exiting - took 3.92 seconds
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Cbc0031I 166 added rows had average density of 73.783133
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Cbc0013I At root node, 166 cuts changed objective from 497995.24 to 497995.24 in 10 passes
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Cbc0014I Cut generator 0 (Probing) - 298 row cuts average 8.2 elements, 0 column cuts (123 active) in 1.134 seconds - new frequency is 1
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Cbc0014I Cut generator 1 (Gomory) - 985 row cuts average 585.6 elements, 0 column cuts (0 active) in 0.785 seconds - new frequency is 1
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Cbc0014I Cut generator 2 (Knapsack) - 170 row cuts average 2.9 elements, 0 column cuts (0 active) in 0.100 seconds - new frequency is 1
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Cbc0014I Cut generator 3 (Clique) - 0 row cuts average 0.0 elements, 0 column cuts (0 active) in 0.012 seconds - new frequency is -100
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Cbc0014I Cut generator 4 (MixedIntegerRounding2) - 285 row cuts average 68.8 elements, 0 column cuts (0 active) in 0.137 seconds - new frequency is 1
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Cbc0014I Cut generator 5 (FlowCover) - 26 row cuts average 28.7 elements, 0 column cuts (0 active) in 0.019 seconds - new frequency is -100
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Cbc0014I Cut generator 6 (TwoMirCuts) - 723 row cuts average 138.8 elements, 0 column cuts (0 active) in 0.677 seconds - new frequency is -100
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Cbc0010I After 0 nodes, 1 on tree, 1e+50 best solution, best possible 497995.24 (43.62 seconds)
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Cbc0010I After 100 nodes, 57 on tree, 1e+50 best solution, best possible 497995.24 (59.88 seconds)
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Cbc0010I After 200 nodes, 109 on tree, 1e+50 best solution, best possible 497995.24 (64.07 seconds)
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Cbc0010I After 300 nodes, 161 on tree, 1e+50 best solution, best possible 497995.24 (68.27 seconds)
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Cbc0012I Integer solution of 497995.24 found by rounding after 15921 iterations and 379 nodes (71.58 seconds)
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Cbc0038I Full problem 17402 rows 14104 columns, reduced to 0 rows 0 columns
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Cbc0001I Search completed - best objective 497995.2442909057, took 15921 iterations and 379 nodes (71.87 seconds)
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Cbc0032I Strong branching done 2148 times (28125 iterations), fathomed 0 nodes and fixed 0 variables
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Cbc0035I Maximum depth 100, 0 variables fixed on reduced cost
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Cuts at root node changed objective from 497995 to 497995
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Probing was tried 119 times and created 537 cuts of which 123 were active after adding rounds of cuts (1.734 seconds)
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Gomory was tried 119 times and created 1156 cuts of which 0 were active after adding rounds of cuts (1.679 seconds)
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Knapsack was tried 119 times and created 219 cuts of which 0 were active after adding rounds of cuts (1.038 seconds)
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Clique was tried 10 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.012 seconds)
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MixedIntegerRounding2 was tried 119 times and created 374 cuts of which 0 were active after adding rounds of cuts (1.404 seconds)
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FlowCover was tried 10 times and created 26 cuts of which 0 were active after adding rounds of cuts (0.019 seconds)
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TwoMirCuts was tried 10 times and created 723 cuts of which 0 were active after adding rounds of cuts (0.677 seconds)
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ImplicationCuts was tried 15 times and created 16 cuts of which 0 were active after adding rounds of cuts (0.023 seconds)
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Result - Optimal solution found
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Objective value: 497995.24429091
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Enumerated nodes: 379
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Total iterations: 15921
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Time (CPU seconds): 72.51
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Time (Wallclock seconds): 72.80
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Total time (CPU seconds): 74.98 (Wallclock seconds): 75.41
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