--- Job ran16x16 Start 07/18/08 15:45:40 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 --- ran16x16.gms(106) 2 Mb --- GDXin=/home/stefan/work/gams/models/LINlib/ran16x16.gdx --- ran16x16.gms(148) 3 Mb --- Starting execution: elapsed 0:00:00.007 --- ran16x16.gms(123) 4 Mb --- Generating MIP model m --- ran16x16.gms(124) 4 Mb --- 289 rows 513 columns 1,537 non-zeroes --- 256 discrete-columns --- Executing Cbc: elapsed 0:00:00.016 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: 512 columns and 288 rows. 256 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 3116.43 - 0.01 seconds processed model has 288 rows, 512 columns (256 integer) and 1024 elements Pass 1: suminf. 1.42264 obj. 3630.29 iterations 85 Solution found of 4693 Before mini branch and bound, 231 integers at bound fixed and 230 continuous Full problem 288 rows 512 columns, reduced to 26 rows 30 columns Mini branch and bound improved solution from 4693 to 4297 (0.02 seconds) Round again with cutoff of 4178.94 Pass 2: suminf. 1.21793 obj. 3548.37 iterations 67 Pass 3: suminf. 0.33403 obj. 4178.94 iterations 56 Pass 4: suminf. 0.25324 obj. 4178.94 iterations 47 Pass 5: suminf. 0.29168 obj. 4178.94 iterations 43 Pass 6: suminf. 0.29168 obj. 4178.94 iterations 32 Pass 7: suminf. 0.25324 obj. 4178.94 iterations 47 Pass 8: suminf. 2.99358 obj. 4178.94 iterations 135 Pass 9: suminf. 2.60580 obj. 4178.94 iterations 44 Pass 10: suminf. 2.28400 obj. 4178.94 iterations 80 Pass 11: suminf. 1.86012 obj. 4178.94 iterations 77 Pass 12: suminf. 1.12619 obj. 4178.94 iterations 55 Pass 13: suminf. 1.94693 obj. 4178.94 iterations 94 Pass 14: suminf. 1.38407 obj. 4178.94 iterations 80 Pass 15: suminf. 3.71445 obj. 4178.94 iterations 123 Pass 16: suminf. 2.14978 obj. 4178.94 iterations 79 Pass 17: suminf. 2.71914 obj. 4178.94 iterations 96 Pass 18: suminf. 1.97629 obj. 4178.94 iterations 79 Pass 19: suminf. 1.87728 obj. 4178.94 iterations 42 Pass 20: suminf. 1.47219 obj. 4178.94 iterations 67 Pass 21: suminf. 1.46385 obj. 4178.94 iterations 45 Before mini branch and bound, 195 integers at bound fixed and 199 continuous Full problem 288 rows 512 columns, reduced to 75 rows 104 columns Mini branch and bound did not improve solution (0.19 seconds) After 0.19 seconds - Feasibility pump exiting with objective of 7 - took 0.19 seconds Integer solution of 4693 found by feasibility pump after 0 iterations and 0 nodes (0.19 seconds) Full problem 288 rows 512 columns, reduced to 0 rows 0 columns 53 added rows had average density of 21.5094 At root node, 53 cuts changed objective from 3116.43 to 3495.8 in 12 passes Cut generator 0 (Probing) - 0 row cuts (0 active), 0 column cuts in 0.032 seconds - new frequency is 10 Cut generator 1 (Gomory) - 12 row cuts (0 active), 0 column cuts in 0.020 seconds - new frequency is -100 Cut generator 2 (Knapsack) - 79 row cuts (12 active), 0 column cuts in 0.036 seconds - new frequency is 1 Cut generator 3 (Clique) - 0 row cuts (0 active), 0 column cuts in -0.000 seconds - new frequency is -100 Cut generator 4 (MixedIntegerRounding2) - 70 row cuts (22 active), 0 column cuts in 0.004 seconds - new frequency is 1 Cut generator 5 (FlowCover) - 53 row cuts (14 active), 0 column cuts in 0.004 seconds - new frequency is 1 Cut generator 6 (TwoMirCuts) - 57 row cuts (5 active), 0 column cuts in 0.064 seconds - new frequency is -100 After 0 nodes, 1 on tree, 4693 best solution, best possible 3495.8 (0.97 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 0 rows 0 columns Presolve 51 (0) rows, 63 (0) columns and 126 (0) elements Cbc0038I Full problem 288 rows 512 columns, reduced to 51 rows 63 columns Cbc0012I Integer solution of 4383 found by combine solutions after 12494 iterations and 208 nodes (11.24 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 0 rows 0 columns Cbc0004I Integer solution of 4179 found after 24337 iterations and 600 nodes (14.10 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 51 rows 62 columns Cbc0004I Integer solution of 4062 found after 51844 iterations and 1671 nodes (20.30 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 69 rows 89 columns Cbc0038I Full problem 288 rows 512 columns, reduced to 51 rows 62 columns Cbc0012I Integer solution of 3974 found by combine solutions after 51852 iterations and 1673 nodes (20.74 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 51 rows 62 columns Cbc0004I Integer solution of 3966 found after 98845 iterations and 3229 nodes (30.11 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 51 rows 62 columns Cbc0038I Full problem 288 rows 512 columns, reduced to 73 rows 95 columns Cbc0004I Integer solution of 3965 found after 795467 iterations and 24117 nodes (181.67 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 63 rows 81 columns Cbc0038I Full problem 288 rows 512 columns, reduced to 73 rows 95 columns Cbc0004I Integer solution of 3925 found after 906029 iterations and 28009 nodes (207.01 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 81 rows 109 columns Cbc0038I Full problem 288 rows 512 columns, reduced to 63 rows 81 columns Cbc0004I Integer solution of 3910 found after 1016570 iterations and 32493 nodes (233.13 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 80 rows 106 columns Cbc0038I Full problem 288 rows 512 columns, reduced to 81 rows 109 columns Cbc0004I Integer solution of 3887 found after 1103592 iterations and 36334 nodes (254.44 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 80 rows 106 columns Cbc0038I Full problem 288 rows 512 columns, reduced to 81 rows 109 columns Cbc0004I Integer solution of 3823 found after 1171591 iterations and 38937 nodes (271.10 seconds) Cbc0038I Full problem 288 rows 512 columns, reduced to 82 rows 110 columns Cbc0038I Full problem 288 rows 512 columns, reduced to 81 rows 109 columns Solved to optimality. wallclocktime: 883.235 used seconds: 1696.05 MIP solution: 3823 (442013 nodes, 1696.05 seconds) Best possible: 3823 Absolute gap: 0 (absolute tolerance optca: 0) Relative gap: 0 (relative tolerance optcr: 0) --- Restarting execution --- ran16x16.gms(124) 0 Mb --- Reading solution for model m *** Status: Normal completion --- Job ran16x16.gms Stop 07/18/08 16:00:23 elapsed 0:14:43.277