--- Job gesa3 Start 07/17/08 19:30:18 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 --- gesa3.gms(106) 2 Mb --- GDXin=/home/stefan/work/gams/models/LINlib/gesa3.gdx --- gesa3.gms(148) 3 Mb --- Starting execution: elapsed 0:00:00.015 --- 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 Cbc: elapsed 0:00:00.044 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: 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 Jul 15 2008 command line - GAMS/CBC -threads 2 -solve -quit threads was changed from 0 to 2 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 189 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 (0.66 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 (0.80 seconds) After 0.80 seconds - Feasibility pump exiting with objective of 2.79914e+07 - took 0.79 seconds Integer solution of 2.79914e+07 found by feasibility pump after 0 iterations and 0 nodes (0.80 seconds) 36 added rows had average density of 18.25 At root node, 36 cuts changed objective from 2.78464e+07 to 2.79569e+07 in 7 passes Cut generator 0 (Probing) - 54 row cuts (26 active), 294 column cuts in 0.032 seconds - new frequency is 1 Cut generator 1 (Gomory) - 0 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 0.004 seconds - new frequency is -100 Cut generator 3 (Clique) - 0 row cuts (0 active), 0 column cuts in 0.008 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 2.79586e+07 (1.18 seconds) Thread 0 used 7 times, waiting to start 0.00353169, 0.500032 cpu time, 46 locks, 0.00105354 locked, 7.50042e-05 waiting for locks Thread 1 used 1 times, waiting to start 0.13229, 0.372024 cpu time, 7 locks, 0.000322334 locked, 0.000162789 waiting for locks Main thread 0.327314 waiting for threads, 25 locks, 5.17538e-05 locked, 0.000188006 waiting for locks Search completed - best objective 27991042.64838269, took 355 iterations and 8 nodes (1.68 seconds) Strong branching done 530 times (5003 iterations), fathomed 4 nodes and fixed 48 variables Maximum depth 2, 210 variables fixed on reduced cost Cuts at root node changed objective from 2.78464e+07 to 2.79586e+07 Probing was tried 28 times and created 163 cuts of which 78 were active after adding rounds of cuts (0.100 seconds) Gomory was tried 9 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.012 seconds) Knapsack was tried 21 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.012 seconds) Clique was tried 21 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.024 seconds) MixedIntegerRounding2 was tried 21 times and created 138 cuts of which 0 were active after adding rounds of cuts (0.048 seconds) FlowCover was tried 21 times and created 0 cuts of which 0 were active after adding rounds of cuts (0.012 seconds) TwoMirCuts was tried 9 times and created 375 cuts of which 30 were active after adding rounds of cuts (0.060 seconds) 19 bounds tightened after postprocessing Result - Finished objective 27991042.64838269 after 8 nodes and 355 iterations - took 1.88 seconds (total time 1.91) Total time 1.97 Solved to optimality. wallclocktime: 1.81963 used seconds: 1.98 MIP solution: 27991042.65 (8 nodes, 1.98 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 07/17/08 19:30:20 elapsed 0:00:01.896