--- Job blend2 Start 08/21/08 20:02:18 GAMS Rev 228 Copyright (C) 1987-2008 GAMS Development. All rights reserved Licensee: Stefan Vigerske G071106/0001CB-LNX Humboldt University Berlin, Numerical Mathematics DC5918 --- Starting compilation --- blend2.gms(106) 2 Mb --- GDXin=/home/stefan/work/gams/models/LINlib/blend2.gdx --- blend2.gms(148) 3 Mb --- Starting execution: elapsed 0:00:00.008 --- blend2.gms(123) 4 Mb --- Generating MIP model m --- blend2.gms(124) 4 Mb --- 275 rows 354 columns 1,498 non-zeroes --- 256 discrete-columns --- Executing COINCBC: elapsed 0:00:00.016 GAMS/CoinCbc 2.1 LP/MIP Solver written by J. Forrest Problem statistics: 353 columns and 274 rows. 264 variables have integrality restrictions. Calling CBC main solution routine... Coin Cbc and Clp Solver version 2.10.00, build Jun 21 2008 command line - GAMS/CBC -solve -quit Continuous objective value is 6.91568 - 0.00 seconds 9 variables fixed 0 fixed, 78 tightened bounds, 6 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 6 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 2 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 2 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 2 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 2 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 2 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 2 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 2 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 2 strengthened rows, 0 substitutions processed model has 169 rows, 319 columns (247 integer) and 1279 elements Pass 1: suminf. 0.42374 obj. 7.10131 iterations 78 Solution found of 10.0767 Full problem 170 rows 319 columns, reduced to 9 rows 5 columns Mini branch and bound could not fix general integers No solution found this major pass Before mini branch and bound, 239 integers at bound fixed and 68 continuous Full problem 169 rows 319 columns, reduced to 13 rows 8 columns Mini branch and bound did not improve solution (0.02 seconds) After 0.02 seconds - Feasibility pump exiting - took 0.02 seconds 13 added rows had average density of 69.2308 At root node, 13 cuts changed objective from 6.91568 to 7.06595 in 9 passes Cut generator 0 (Probing) - 17 row cuts (1 active), 0 column cuts in 0.320 seconds - new frequency is 1 Cut generator 1 (Gomory) - 0 row cuts (0 active), 0 column cuts in 0.000 seconds - new frequency is -100 Cut generator 2 (Knapsack) - 22 row cuts (1 active), 0 column cuts in 0.004 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) - 25 row cuts (2 active), 0 column cuts in 0.012 seconds - new frequency is 1 Cut generator 5 (FlowCover) - 10 row cuts (4 active), 0 column cuts in 0.004 seconds - new frequency is -100 Cut generator 6 (TwoMirCuts) - 130 row cuts (4 active), 0 column cuts in 0.020 seconds - new frequency is -100 After 0 nodes, 1 on tree, 1e+50 best solution, best possible 7.06595 (0.43 seconds) Integer solution of 7.70528 found after 5529 iterations and 451 nodes (2.83 seconds) Full problem 169 rows 319 columns, reduced to 31 rows 45 columns Integer solution of 7.59898 found after 6670 iterations and 622 nodes (3.24 seconds) Full problem 169 rows 319 columns, reduced to 36 rows 53 columns After 1000 nodes, 10 on tree, 7.59898 best solution, best possible 7.37291 (3.89 seconds) Search completed - best objective 7.598985, took 10296 iterations and 1098 nodes (4.02 seconds) Strong branching done 2656 times (21034 iterations), fathomed 10 nodes and fixed 127 variables Maximum depth 80, 4060 variables fixed on reduced cost Cuts at root node changed objective from 6.91568 to 7.06595 Probing was tried 795 times and created 2158 cuts of which 720 were active after adding rounds of cuts (0.724 seconds) Gomory was tried 9 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) Knapsack was tried 193 times and created 332 cuts of which 60 were active after adding rounds of cuts (0.084 seconds) Clique was tried 9 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.000 seconds) MixedIntegerRounding2 was tried 193 times and created 152 cuts of which 31 were active after adding rounds of cuts (0.064 seconds) FlowCover was tried 9 times and created 10 cuts of which 4 were active after adding rounds of cuts (0.004 seconds) TwoMirCuts was tried 9 times and created 130 cuts of which 4 were active after adding rounds of cuts (0.020 seconds) 71 bounds tightened after postprocessing Result - Finished objective 7.598985 after 1098 nodes and 10296 iterations - took 4.42 seconds (total time 4.42) Total time 4.44 Solved to optimality. MIP solution: 7.598985 (1098 nodes, 4.44 seconds) Best possible: 7.598985 Absolute gap: 0 (absolute tolerance optca: 0) Relative gap: 0 (relative tolerance optcr: 0) --- Restarting execution --- blend2.gms(124) 0 Mb --- Reading solution for model m *** Status: Normal completion --- Job blend2.gms Stop 08/21/08 20:02:23 elapsed 0:00:04.484