--- Job irp Start 07/17/08 19:32:56 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 --- irp.gms(106) 2 Mb --- GDXin=/home/stefan/work/gams/models/LINlib/irp.gdx --- irp.gms(148) 7 Mb --- Starting execution: elapsed 0:00:00.153 --- irp.gms(123) 7 Mb --- Generating MIP model m --- irp.gms(124) 13 Mb --- 40 rows 20,316 columns 118,570 non-zeroes --- 20,315 discrete-columns --- irp.gms(124) 13 Mb --- Executing Cbc: elapsed 0:00:00.454 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: 20315 columns and 39 rows. 20315 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 12123.5 - 0.13 seconds 0 fixed, 23 tightened bounds, 0 strengthened rows, 0 substitutions processed model has 39 rows, 19370 columns (19370 integer) and 93161 elements Pass 1: suminf. 4.16667 obj. 12171.2 iterations 56 Pass 2: suminf. 4.16667 obj. 12171.2 iterations 67 Pass 3: suminf. 7.76616 obj. 12438 iterations 112 Pass 4: suminf. 1.60000 obj. 12537.6 iterations 80 Pass 5: suminf. 0.00000 obj. 12555.6 iterations 44 Solution found of 12555.6 Before mini branch and bound, 19296 integers at bound fixed and 0 continuous Full problem 39 rows 19370 columns, reduced to 39 rows 74 columns Mini branch and bound did not improve solution (0.64 seconds) After 0.64 seconds - Feasibility pump exiting with objective of 1 - took 0.61 seconds Integer solution of 12555.6 found by feasibility pump after 0 iterations and 0 nodes (0.65 seconds) Full problem 39 rows 19370 columns, reduced to 0 rows 0 columns Full problem 39 rows 19370 columns, reduced to 16 rows 1784 columns Integer solution of 12210.2 found by greedy equality after 0 iterations and 0 nodes (1.42 seconds) Full problem 39 rows 19370 columns, reduced to 0 rows 0 columns 29 added rows had average density of 43.5172 At root node, 29 cuts changed objective from 12123.5 to 12130.7 in 20 passes Cut generator 0 (Probing) - 0 row cuts (0 active), 0 column cuts in 0.136 seconds - new frequency is 10 Cut generator 1 (Gomory) - 1 row cuts (1 active), 0 column cuts in 0.224 seconds - new frequency is -100 Cut generator 2 (Knapsack) - 0 row cuts (0 active), 0 column cuts in 0.088 seconds - new frequency is -100 Cut generator 3 (Clique) - 1150 row cuts (28 active), 0 column cuts in 0.032 seconds - new frequency is 1 Cut generator 4 (MixedIntegerRounding2) - 0 row cuts (0 active), 0 column cuts in 0.080 seconds - new frequency is -100 Cut generator 5 (FlowCover) - 0 row cuts (0 active), 0 column cuts in 0.064 seconds - new frequency is -100 Cut generator 6 (TwoMirCuts) - 0 row cuts (0 active), 0 column cuts in 0.260 seconds - new frequency is -100 After 0 nodes, 1 on tree, 12210.2 best solution, best possible 12130.7 (7.83 seconds) Cbc0038I Full problem 39 rows 19370 columns, reduced to 19 rows 22 columns Cbc0012I Integer solution of 12184.7 found by combine solutions after 926 iterations and 2 nodes (10.24 seconds) Cbc0038I Full problem 39 rows 19370 columns, reduced to 0 rows 0 columns Cbc0038I Full problem 39 rows 19370 columns, reduced to 22 rows 28 columns Cbc0012I Integer solution of 12159.5 found by combine solutions after 1564 iterations and 16 nodes (19.09 seconds) Cbc0038I Full problem 39 rows 19370 columns, reduced to 0 rows 0 columns Cbc0038I Full problem 39 rows 19370 columns, reduced to 21 rows 30 columns Cbc0038I Full problem 39 rows 19370 columns, reduced to 0 rows 0 columns Solved to optimality. wallclocktime: 20.3485 used seconds: 27.15 MIP solution: 12159.49284 (53 nodes, 27.16 seconds) Best possible: 12159.49284 Absolute gap: 0 (absolute tolerance optca: 0) Relative gap: 0 (relative tolerance optcr: 0) --- Restarting execution --- irp.gms(124) 0 Mb --- Reading solution for model m --- irp.gms(124) 8 Mb *** Status: Normal completion --- Job irp.gms Stop 07/17/08 19:33:17 elapsed 0:00:20.926