--- Job gesa3 Start 08/21/08 21:59:22 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 --- gesa3.gms(106) 2 Mb --- GDXin=/home/stefan/work/gams/models/LINlib/gesa3.gdx --- gesa3.gms(148) 3 Mb --- Starting execution: elapsed 0:00:00.013 --- gesa3.gms(123) 4 Mb --- Generating MIP model m --- gesa3.gms(124) 4 Mb --- 1,369 rows 1,153 columns 5,737 non-zeroes --- 384 discrete-columns --- gesa3.gms(124) 4 Mb --- Executing COINCBC: elapsed 0:00:00.040 GAMS/CoinCbc 2.1 LP/MIP Solver written by J. Forrest Problem statistics: 1152 columns and 1368 rows. 384 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 2.78336e+07 - 0.02 seconds 0 fixed, 25 tightened bounds, 59 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 23 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 11 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 11 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 11 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 11 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 11 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 11 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 11 strengthened rows, 0 substitutions processed model has 1296 rows, 1080 columns (384 integer) and 4776 elements Pass 1: suminf. 13.76380 obj. 2.78709e+07 iterations 42 Pass 2: suminf. 13.76380 obj. 2.78709e+07 iterations 0 Pass 3: suminf. 13.76380 obj. 2.78709e+07 iterations 0 Pass 4: suminf. 14.67127 obj. 3.70962e+07 iterations 190 Pass 5: suminf. 13.90624 obj. 3.73426e+07 iterations 14 Pass 6: suminf. 12.77641 obj. 3.74483e+07 iterations 8 Solution found of 3.74483e+07 Mini branch and bound could not fix general integers No solution found this major pass Before mini branch and bound, 233 integers at bound fixed and 432 continuous Full problem 1296 rows 1080 columns, reduced to 595 rows 407 columns Mini branch and bound improved solution from 1e+50 to 2.79914e+07 (0.56 seconds) Round again with cutoff of 2.79769e+07 Pass 7: suminf. 13.66451 obj. 2.78544e+07 iterations 42 Solution found of 2.78544e+07 Full problem 1297 rows 1080 columns, reduced to 691 rows 576 columns - too large Mini branch and bound could not fix general integers No solution found this major pass Before mini branch and bound, 307 integers at bound fixed and 513 continuous of which 1 were internal integer and 0 internal continuous Full problem 1296 rows 1080 columns, reduced to 259 rows 220 columns Mini branch and bound did not improve solution (0.66 seconds) After 0.66 seconds - Feasibility pump exiting with objective of 2.79914e+07 - took 0.66 seconds Integer solution of 2.79914e+07 found by feasibility pump after 0 iterations and 0 nodes (0.66 seconds) 40 added rows had average density of 16.95 At root node, 40 cuts changed objective from 2.78464e+07 to 2.79674e+07 in 9 passes Cut generator 0 (Probing) - 69 row cuts (30 active), 317 column cuts in 0.040 seconds - new frequency is 1 Cut generator 1 (Gomory) - 6 row cuts (0 active), 0 column cuts in 0.004 seconds - new frequency is -100 Cut generator 2 (Knapsack) - 0 row cuts (0 active), 0 column cuts in 0.016 seconds - new frequency is -100 Cut generator 3 (Clique) - 0 row cuts (0 active), 0 column cuts in -0.000 seconds - new frequency is -100 Cut generator 4 (MixedIntegerRounding2) - 46 row cuts (0 active), 0 column cuts in 0.016 seconds - new frequency is -100 Cut generator 5 (FlowCover) - 0 row cuts (0 active), 0 column cuts in 0.004 seconds - new frequency is -100 Cut generator 6 (TwoMirCuts) - 125 row cuts (10 active), 0 column cuts in 0.020 seconds - new frequency is -100 After 0 nodes, 1 on tree, 2.79914e+07 best solution, best possible 2.79682e+07 (1.04 seconds) Search completed - best objective 27991042.64838269, took 376 iterations and 4 nodes (1.32 seconds) Strong branching done 240 times (2250 iterations), fathomed 3 nodes and fixed 34 variables Maximum depth 1, 145 variables fixed on reduced cost Cuts at root node changed objective from 2.78464e+07 to 2.79682e+07 Probing was tried 13 times and created 69 cuts of which 30 were active after adding rounds of cuts (0.040 seconds) Gomory was tried 4 times and created 6 cuts of which 0 were active after adding rounds of cuts (0.004 seconds) Knapsack was tried 9 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.016 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 9 times and created 46 cuts of which 0 were active after adding rounds of cuts (0.016 seconds) FlowCover was tried 9 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.004 seconds) TwoMirCuts was tried 4 times and created 125 cuts of which 10 were active after adding rounds of cuts (0.020 seconds) 19 bounds tightened after postprocessing Result - Finished objective 27991042.64838269 after 4 nodes and 376 iterations - took 1.51 seconds (total time 1.53) Total time 1.59 Solved to optimality. MIP solution: 27991042.65 (4 nodes, 1.59 seconds) Best possible: 27991042.65 Absolute gap: 0 (absolute tolerance optca: 0) Relative gap: 0 (relative tolerance optcr: 0) --- Restarting execution --- gesa3.gms(124) 0 Mb --- Reading solution for model m *** Status: Normal completion --- Job gesa3.gms Stop 08/21/08 21:59:24 elapsed 0:00:01.696