--- Job n3705 Start 07/18/08 03:06:16 GAMS Rev 227 Copyright (C) 1987-2008 GAMS Development. All rights reserved Licensee: Stefan Vigerske G071106/0001CB-LNX Humboldt University Berlin, Numerical Mathematics DC5918 --- Starting compilation --- n3705.gms(106) 2 Mb --- GDXin=/home/stefan/work/gams/models/LINlib/n3705.gdx --- n3705.gms(148) 5 Mb --- Starting execution: elapsed 0:00:00.086 --- n3705.gms(123) 5 Mb --- Generating MIP model m --- n3705.gms(124) 7 Mb --- 5,151 rows 10,001 columns 30,001 non-zeroes --- 5,000 discrete-columns --- n3705.gms(124) 7 Mb --- Executing Cbc: elapsed 0:00:00.226 GAMS/Cbc 2.1 LP/MIP Solver written by J. Forrest Reading parameter(s) from "/home/stefan/work/gams/benchmarks/LINLib.MIP/cbc.op2" >> threads 2 Finished reading from "/home/stefan/work/gams/benchmarks/LINLib.MIP/cbc.op2" Problem statistics: 10000 columns and 5150 rows. 5000 variables have integrality restrictions. Calling CBC main solution routine... Coin Cbc and Clp Solver version 2.10.00, build Jul 15 2008 command line - GAMS/CBC -threads 2 -solve -quit threads was changed from 0 to 2 Continuous objective value is 973361 - 1.64 seconds processed model has 5150 rows, 10000 columns (5000 integer) and 20000 elements Pass 1: (0.24 seconds) suminf. 6.92522 obj. 1.06141e+06 iterations 1168 Pass 2: (0.45 seconds) suminf. 0.59379 obj. 1.42361e+06 iterations 1185 Solution found of 1.79913e+06 Before mini branch and bound, 4863 integers at bound fixed and 4859 continuous Full problem 5150 rows 10000 columns, reduced to 173 rows 228 columns Mini branch and bound improved solution from 1.79913e+06 to 1.50212e+06 (0.97 seconds) Round again with cutoff of 1.44924e+06 Pass 3: (1.24 seconds) suminf. 6.92522 obj. 1.05783e+06 iterations 629 Pass 4: (1.38 seconds) suminf. 0.99728 obj. 1.3482e+06 iterations 702 Pass 5: (1.67 seconds) suminf. 1.91964 obj. 1.44924e+06 iterations 895 Pass 6: (1.87 seconds) suminf. 1.35735 obj. 1.44924e+06 iterations 641 Pass 7: (2.08 seconds) suminf. 1.87724 obj. 1.44924e+06 iterations 659 Pass 8: (2.21 seconds) suminf. 1.35181 obj. 1.44871e+06 iterations 375 Pass 9: (2.44 seconds) suminf. 1.47314 obj. 1.44924e+06 iterations 653 Pass 10: (2.55 seconds) suminf. 0.88617 obj. 1.43819e+06 iterations 452 Pass 11: (2.80 seconds) suminf. 1.31151 obj. 1.44924e+06 iterations 968 Pass 12: (2.92 seconds) suminf. 0.86889 obj. 1.44209e+06 iterations 392 Pass 13: (3.03 seconds) suminf. 1.31663 obj. 1.44924e+06 iterations 323 Pass 14: (3.18 seconds) suminf. 0.90183 obj. 1.44924e+06 iterations 462 Pass 15: (3.53 seconds) suminf. 0.93953 obj. 1.44924e+06 iterations 1073 Pass 16: (3.61 seconds) suminf. 0.59380 obj. 1.44443e+06 iterations 225 Pass 17: (3.78 seconds) suminf. 1.71818 obj. 1.44924e+06 iterations 450 Pass 18: (3.91 seconds) suminf. 1.18467 obj. 1.44924e+06 iterations 393 Pass 19: (4.12 seconds) suminf. 2.73163 obj. 1.44924e+06 iterations 753 Pass 20: (4.24 seconds) suminf. 2.02911 obj. 1.44924e+06 iterations 290 Pass 21: (4.28 seconds) suminf. 2.02565 obj. 1.44924e+06 iterations 24 Pass 22: (4.48 seconds) suminf. 2.85995 obj. 1.44924e+06 iterations 686 Before mini branch and bound, 4798 integers at bound fixed and 4785 continuous Full problem 5150 rows 10000 columns, reduced to 264 rows 384 columns Mini branch and bound did not improve solution (5.15 seconds) After 5.15 seconds - Feasibility pump exiting with objective of 21 - took 5.14 seconds Integer solution of 1.79913e+06 found by feasibility pump after 0 iterations and 0 nodes (6.01 seconds) Full problem 5150 rows 10000 columns, reduced to 0 rows 0 columns 291 added rows had average density of 133.137 At root node, 291 cuts changed objective from 973361 to 1.03535e+06 in 20 passes Cut generator 0 (Probing) - 0 row cuts (0 active), 0 column cuts in 2.632 seconds - new frequency is 10 Cut generator 1 (Gomory) - 20 row cuts (0 active), 0 column cuts in 1.124 seconds - new frequency is -100 Cut generator 2 (Knapsack) - 339 row cuts (28 active), 0 column cuts in 0.312 seconds - new frequency is 1 Cut generator 3 (Clique) - 0 row cuts (0 active), 0 column cuts in 0.048 seconds - new frequency is -100 Cut generator 4 (MixedIntegerRounding2) - 793 row cuts (207 active), 0 column cuts in 0.192 seconds - new frequency is 1 Cut generator 5 (FlowCover) - 419 row cuts (51 active), 0 column cuts in 0.428 seconds - new frequency is 1 Cut generator 6 (TwoMirCuts) - 63 row cuts (5 active), 0 column cuts in 0.704 seconds - new frequency is -100 After 0 nodes, 1 on tree, 1.79913e+06 best solution, best possible 1.03535e+06 (29.87 seconds) After 100 nodes, 51 on tree, 1.79913e+06 best solution, best possible 1.03761e+06 (449.72 seconds) After 200 nodes, 107 on tree, 1.79913e+06 best solution, best possible 1.03828e+06 (683.88 seconds) After 300 nodes, 161 on tree, 1.79913e+06 best solution, best possible 1.03828e+06 (896.91 seconds) After 400 nodes, 221 on tree, 1.79913e+06 best solution, best possible 1.03828e+06 (1045.12 seconds) After 500 nodes, 283 on tree, 1.79913e+06 best solution, best possible 1.03828e+06 (1110.86 seconds) After 600 nodes, 341 on tree, 1.79913e+06 best solution, best possible 1.03828e+06 (1133.21 seconds) After 700 nodes, 404 on tree, 1.79913e+06 best solution, best possible 1.03828e+06 (1146.46 seconds) Cbc0004I Integer solution of 1.48212e+06 found after 200741 iterations and 795 nodes (1163.69 seconds) Cbc0038I Full problem 5150 rows 10000 columns, reduced to 309 rows 419 columns Cbc0038I Full problem 5150 rows 10000 columns, reduced to 0 rows 0 columns Cbc0012I Integer solution of 1.4644e+06 found by combine solutions after 200757 iterations and 798 nodes (1169.28 seconds) Cbc0012I Integer solution of 1.46361e+06 found by combine solutions after 202036 iterations and 811 nodes (1169.81 seconds) Cbc0012I Integer solution of 1.46344e+06 found by combine solutions after 202209 iterations and 813 nodes (1170.87 seconds) Cbc0038I Full problem 5150 rows 10000 columns, reduced to 0 rows 0 columns Cbc0012I Integer solution of 1.4612e+06 found by combine solutions after 202397 iterations and 814 nodes (1171.75 seconds) Cbc0012I Integer solution of 1.46047e+06 found by combine solutions after 202866 iterations and 816 nodes (1172.54 seconds) Cbc0038I Full problem 5150 rows 10000 columns, reduced to 0 rows 0 columns Cbc0038I Full problem 5150 rows 10000 columns, reduced to 0 rows 0 columns Node limit reached. Have feasible solution. wallclocktime: 3657.3 used seconds: 7176.28 MIP solution: 1460468 (8890 nodes, 7176.28 seconds) Best possible: 1042529.608 Absolute gap: 4.1794e+05 (absolute tolerance optca: 0) Relative gap: 0.40089 (relative tolerance optcr: 0) --- Restarting execution --- n3705.gms(124) 0 Mb --- Reading solution for model m --- n3705.gms(124) 5 Mb *** Status: Normal completion --- Job n3705.gms Stop 07/18/08 04:07:14 elapsed 1:00:57.606