--- Job bell5 Start 07/17/08 15:22:41 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 --- bell5.gms(106) 2 Mb --- GDXin=/home/stefan/work/gams/models/LINlib/bell5.gdx --- bell5.gms(148) 3 Mb --- Starting execution: elapsed 0:00:00.004 --- bell5.gms(123) 4 Mb --- Generating MIP model m --- bell5.gms(124) 4 Mb --- 92 rows 105 columns 341 non-zeroes --- 58 discrete-columns --- Executing Cbc: elapsed 0:00:00.008 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: 104 columns and 91 rows. 58 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 8.60842e+06 - -0.00 seconds 0 fixed, 26 tightened bounds, 1 strengthened rows, 0 substitutions 0 fixed, 5 tightened bounds, 1 strengthened rows, 0 substitutions 0 fixed, 3 tightened bounds, 1 strengthened rows, 0 substitutions 0 fixed, 2 tightened bounds, 1 strengthened rows, 0 substitutions 0 fixed, 2 tightened bounds, 1 strengthened rows, 0 substitutions 0 fixed, 2 tightened bounds, 1 strengthened rows, 0 substitutions 0 fixed, 2 tightened bounds, 1 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 1 strengthened rows, 0 substitutions 0 fixed, 0 tightened bounds, 1 strengthened rows, 0 substitutions processed model has 87 rows, 101 columns (57 integer) and 257 elements Pass 1: suminf. 3.23205 obj. 8.6729e+06 iterations 14 Pass 2: suminf. 3.64851 obj. 8.94235e+06 iterations 18 Solution found of 8.94235e+06 Full problem 88 rows 101 columns, reduced to 45 rows 52 columns Cleaned solution of 9.153e+06 Before mini branch and bound, 25 integers at bound fixed and 15 continuous of which 1 were internal integer and 0 internal continuous Full problem 87 rows 101 columns, reduced to 30 rows 34 columns Mini branch and bound improved solution from 9.153e+06 to 9.06157e+06 (0.12 seconds) Round again with cutoff of 9.01625e+06 Pass 3: suminf. 3.39341 obj. 8.67518e+06 iterations 17 Pass 4: suminf. 3.84880 obj. 9.01625e+06 iterations 25 Solution found of 9.01625e+06 Mini branch and bound could not fix general integers No solution found this major pass Before mini branch and bound, 24 integers at bound fixed and 12 continuous of which 1 were internal integer and 0 internal continuous Full problem 87 rows 101 columns, reduced to 37 rows 40 columns Mini branch and bound did not improve solution (0.14 seconds) After 0.14 seconds - Feasibility pump exiting with objective of 9.06157e+06 - took 0.14 seconds Integer solution of 9.06157e+06 found by feasibility pump after 0 iterations and 0 nodes (0.14 seconds) Full problem 87 rows 101 columns, reduced to 54 rows 55 columns Integer solution of 8.98651e+06 found by combine solutions after 0 iterations and 0 nodes (0.20 seconds) 20 added rows had average density of 29.7 At root node, 20 cuts changed objective from 8.60842e+06 to 8.94788e+06 in 76 passes Cut generator 0 (Probing) - 36 row cuts (4 active), 21 column cuts in 0.176 seconds - new frequency is 1 Cut generator 1 (Gomory) - 318 row cuts (13 active), 0 column cuts in 0.028 seconds - new frequency is 1 Cut generator 2 (Knapsack) - 0 row cuts (0 active), 0 column cuts in 0.012 seconds - new frequency is -100 Cut generator 3 (Clique) - 0 row cuts (0 active), 0 column cuts in 0.004 seconds - new frequency is -100 Cut generator 4 (MixedIntegerRounding2) - 35 row cuts (1 active), 0 column cuts in 0.012 seconds - new frequency is -100 Cut generator 5 (FlowCover) - 0 row cuts (0 active), 0 column cuts in 0.024 seconds - new frequency is -100 Cut generator 6 (TwoMirCuts) - 160 row cuts (2 active), 0 column cuts in 0.020 seconds - new frequency is -100 After 0 nodes, 1 on tree, 8.98651e+06 best solution, best possible 8.94789e+06 (0.54 seconds) Presolve 51 (-36) rows, 53 (-48) columns and 123 (-134) elements Cbc0038I Full problem 87 rows 101 columns, reduced to 44 rows 47 columns Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 53 columns Cbc0004I Integer solution of 8.97217e+06 found after 1617 iterations and 308 nodes (1.15 seconds) Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 53 columns Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 53 columns Cbc0004I Integer solution of 8.96735e+06 found after 1792 iterations and 389 nodes (1.69 seconds) Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 54 columns Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 53 columns Cbc0004I Integer solution of 8.96694e+06 found after 2098 iterations and 528 nodes (2.22 seconds) Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 54 columns Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 53 columns Cbc0004I Integer solution of 8.96693e+06 found after 2379 iterations and 646 nodes (2.64 seconds) Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 53 columns Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 54 columns Cbc0004I Integer solution of 8.96641e+06 found after 5163 iterations and 1798 nodes (3.62 seconds) Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 54 columns Cbc0038I Full problem 87 rows 101 columns, reduced to 51 rows 54 columns Solved to optimality. wallclocktime: 3.02654 used seconds: 5 MIP solution: 8966406.492 (3598 nodes, 5 seconds) Best possible: 8966406.492 Absolute gap: 0 (absolute tolerance optca: 0) Relative gap: 0 (relative tolerance optcr: 0) --- Restarting execution --- bell5.gms(124) 0 Mb --- Reading solution for model m *** Status: Normal completion --- Job bell5.gms Stop 07/17/08 15:22:44 elapsed 0:00:03.057