<div dir="ltr"><div><div><div><div><div><div><div><div><div>Dear Christian,<br><br></div>Thank you for your reply first, and I will try to give more details.<br></div>In fact, I've worked with scip and implemented new projects . And these worked perfectly.<br></div>Now, I've just moved to GCG to use branch and price algorithm. I've just installed gcg with the help of the official documentation : <a href="http://www.or.rwth-aachen.de/gcg/doc/INSTALL.html" target="_blank">http://www.or.rwth-aachen.de/<wbr>gcg/doc/INSTALL.html</a>. After that i would use gcg example according to the offcial documentation also : <a href="http://www.or.rwth-aachen.de/gcg/doc/EXAMPLE.html" target="_blank">http://www.or.rwth-aachen.de/<wbr>gcg/doc/EXAMPLE.html</a>.<br></div>When using this last page, and precisely after typing the command <b><i>optimize</i></b>, I got the errors mentionned before.<br></div>I tried more examples, but had similar errors.<br></div>I've just used scip in interactive shell, on TEST0055.lp and it worked.<br><br></div>Thank you in advance.<br><br></div>Cordially,<br><br></div>Mohamed Mustapha KABBAJ<br><div><div><div><div><div><div><br></div></div></div></div></div></div><div class="gmail_extra"><br><div class="gmail_quote">2017-02-09 9:23 GMT+00:00 Christian Puchert <span dir="ltr"><<a href="mailto:puchert@or.rwth-aachen.de" target="_blank">puchert@or.rwth-aachen.de</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Mohamed,<br>
<br>
unfortunately, I am unable to reproduce your problem – I am not getting any errors with the same GCG/SCIP/SoPlex versions on the same instance.<br>
<br>
Does SCIP work correctly on your machine? Have you already tried 'make test' on SCIP as well as on GCG?<br>
<br>
Kind regards,<br>
Christian<span><br>
<br>
<br>
On 08.02.2017 19:36, Mohamed Mustapha Kabbaj wrote:<br>
</span><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><span>
Hi every one,<br>
<br>
I've problem with the optimization of a test example in gcg.<br>
Even if I've followed step by step the installation page in the<br>
documentation in the official website, i got the following errors when<br></span>
typing the command /optimize /in the gcg command line interface.<span><br>
<br>
<br>
kabbaj@debian:~/Bureau/scipopt<wbr>suite-3.2.0/gcg-2.1.0$ ./bin/gcg<br>
GCG version 2.1.0 [GitHash: 7e8d63e-dirty]<br>
Copyright (c) 2010-2015 Operations Research, RWTH Aachen University<br>
Konrad-Zuse-Zentrum fuer Informationstechnik<br>
Berlin (ZIB)<br>
<br>
SCIP version 3.2.0 [precision: 8 byte] [memory: block] [mode: optimized]<br>
[LP solver: SoPlex 2.2.0] [GitHash: fb0007a]<br>
Copyright (c) 2002-2015 Konrad-Zuse-Zentrum fuer Informationstechnik<br>
Berlin (ZIB)<br>
<br>
External codes:<br>
SoPlex 2.2.0 Linear Programming Solver developed at Zuse<br></span>
Institute Berlin (<a href="http://soplex.zib.de" rel="noreferrer" target="_blank">soplex.zib.de</a> <<a href="http://soplex.zib.de" rel="noreferrer" target="_blank">http://soplex.zib.de</a>>) [GitHash: c9658ca]<span><br>
cppad-20140000.3 Algorithmic Differentiation of C++ algorithms<br></span>
developed by B. Bell (<a href="http://www.coin-or.org/CppAD" rel="noreferrer" target="_blank">www.coin-or.org/CppAD</a> <<a href="http://www.coin-or.org/CppAD" rel="noreferrer" target="_blank">http://www.coin-or.org/CppAD</a>><wbr>)<div><div class="m_-3827881707864200423h5"><br>
<br>
user parameter file <gcg.set> not found - using default parameters<br>
<br>
GCG> read check/instances/cs/TEST0055.lp<br>
<br>
read problem <check/instances/cs/TEST0055.l<wbr>p><br>
============<br>
<br>
original problem has 220 variables (0 bin, 220 int, 0 impl, 0 cont) and<br>
30 constraints<br>
GCG> detect<br>
Starting detection<br>
Detecting purely block diagonal structure: not found.<br>
Detecting set partitioning master structure: found with 20 blocks.<br>
Detecting staircase structure: found 3 blocks.<br>
WARNING: Decomposition type is staircase, cannot compute score<br>
Chosen decomposition with 20 blocks of type bordered.<br>
Detection was successful.<br>
GCG> optimize<br>
<br>
presolving:<br>
presolving (0 rounds: 0 fast, 0 medium, 0 exhaustive):<br>
0 deleted vars, 0 deleted constraints, 0 added constraints, 0 tightened<br>
bounds, 0 added holes, 0 changed sides, 0 changed coefficients<br>
0 implications, 0 cliques<br>
presolved problem has 220 variables (20 bin, 200 int, 0 impl, 0 cont)<br>
and 30 constraints<br>
30 constraints of type <linear><br>
transformed objective value is always integral (scale: 1)<br>
Presolving Time: 0.00<br>
<br>
Matrix has 20 blocks, using 1 aggregated pricing problem!<br>
<br>
<br>
time | node | left |SLP iter|MLP iter|LP it/n| mem |mdpt<br>
|mvars|ocons|mcons|mcuts|sepa|<wbr> dualbound | primalbound | deg |<br>
gap<br>
0.1s| 1 | 0 | 1 | 1 | - |3535k| 0 | 1 | 31<br>
| 12 | 0 | 0 | 0.000000e+00 | -- | 0.00%| Inf<br>
Starting reduced cost pricing...<br>
0.2s| 1 | 0 | 30 | 30 | - |3573k| 0 | 26 | 31<br>
| 12 | 0 | 0 | 1.084300e+01 | -- | 0.00%| Inf<br>
s 0.2s| 1 | 0 | 69 | 69 | - |3631k| 0 | 46 | 31<br>
| 12 | 0 | 1 | 1.084300e+01 | 1.200000e+01 | 0.00%| 10.67%<br>
[src/scip/event.c:1170] ERROR: event is neither node nor LP event<br>
[src/scip/solve.c:4536] ERROR: Error <-9> in function call<br>
[src/scip/scip.c:14690] ERROR: Error <-9> in function call<br>
WARNING: Error while solving subproblem in XP Crossover heuristic;<br>
sub-SCIP terminated with code <-9><br>
0.3s| 1 | 2 | 69 | 69 | - |3663k| 0 | 66 | 31<br>
| 12 | 0 | 1 | 1.084300e+01 | 1.200000e+01 | 0.00%| 10.67%<br>
[src/scip/event.c:1170] ERROR: event is neither node nor LP event<br>
[src/scip/solve.c:4536] ERROR: Error <-9> in function call<br>
[src/scip/scip.c:14690] ERROR: Error <-9> in function call<br>
[src/relax_gcg.c:2303] ERROR: Error <-9> in function call<br>
[src/scip/relax.c:324] ERROR: Error <-9> in function call<br>
[src/scip/solve.c:2934] ERROR: Error <-9> in function call<br>
[src/scip/solve.c:3575] ERROR: Error <-9> in function call<br>
[src/scip/solve.c:3797] ERROR: Error <-9> in function call<br>
[src/scip/solve.c:4432] ERROR: Error <-9> in function call<br>
[src/scip/scip.c:14690] ERROR: Error <-9> in function call<br>
[src/dialog_gcg.c:417] ERROR: Error <-9> in function call<br>
[src/scip/dialog.c:824] ERROR: Error <-9> in function call<br>
[src/scip/dialog.c:366] ERROR: Error <-9> in function call<br>
[src/scip/scip.c:8959] ERROR: Error <-9> in function call<br>
[src/main.c:393] ERROR: Error <-9> in function call<br>
[src/main.c:438] ERROR: Error <-9> in function call<br>
SCIP Error (-9): method cannot be called with this type of data<br>
<br>
<br>
I've tried with other instances, but I still had errors.<br>
<br>
Could anyone tell the solution please.<br>
<br>
<br>
Cordially,<br>
<br>
Mohamed Mustapha KABBAJ<br>
<br>
<br></div></div>
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</blockquote>
<br>
-- <br>
Christian Puchert, M.Sc.<br>
Research Assistant<br>
<br>
Chair of Operations Research<br>
RWTH Aachen University<br>
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