[SCIP] Error when optimizing TEST0055

[Christian Puchert]

Dear Mohamed,

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.

Does SCIP work correctly on your machine? Have you already tried 'make 
test' on SCIP as well as on GCG?

Kind regards,
Christian


On 08.02.2017 19:36, Mohamed Mustapha Kabbaj wrote:
> Hi every one,
>
> I've problem with the optimization of a test example in gcg.
> Even if I've followed step by step the installation page in the
> documentation in the official website, i got the following errors when
> typing the command /optimize /in the gcg command line interface.
>
>
> kabbaj at debian:~/Bureau/scipoptsuite-3.2.0/gcg-2.1.0$ ./bin/gcg
> GCG version 2.1.0 [GitHash: 7e8d63e-dirty]
> Copyright (c) 2010-2015 Operations Research, RWTH Aachen University
>                         Konrad-Zuse-Zentrum fuer Informationstechnik
> Berlin (ZIB)
>
> SCIP version 3.2.0 [precision: 8 byte] [memory: block] [mode: optimized]
> [LP solver: SoPlex 2.2.0] [GitHash: fb0007a]
> Copyright (c) 2002-2015 Konrad-Zuse-Zentrum fuer Informationstechnik
> Berlin (ZIB)
>
> External codes:
>   SoPlex 2.2.0         Linear Programming Solver developed at Zuse
> Institute Berlin (soplex.zib.de <http://soplex.zib.de>) [GitHash: c9658ca]
>   cppad-20140000.3     Algorithmic Differentiation of C++ algorithms
> developed by B. Bell (www.coin-or.org/CppAD <http://www.coin-or.org/CppAD>)
>
> user parameter file <gcg.set> not found - using default parameters
>
> GCG> read check/instances/cs/TEST0055.lp
>
> read problem <check/instances/cs/TEST0055.lp>
> ============
>
> original problem has 220 variables (0 bin, 220 int, 0 impl, 0 cont) and
> 30 constraints
> GCG> detect
> Starting detection
> Detecting purely block diagonal structure: not found.
> Detecting set partitioning master structure: found with 20 blocks.
> Detecting staircase structure: found 3 blocks.
> WARNING: Decomposition type is staircase, cannot compute score
> Chosen decomposition with 20 blocks of type bordered.
> Detection was successful.
> GCG> optimize
>
> presolving:
> presolving (0 rounds: 0 fast, 0 medium, 0 exhaustive):
>  0 deleted vars, 0 deleted constraints, 0 added constraints, 0 tightened
> bounds, 0 added holes, 0 changed sides, 0 changed coefficients
>  0 implications, 0 cliques
> presolved problem has 220 variables (20 bin, 200 int, 0 impl, 0 cont)
> and 30 constraints
>      30 constraints of type <linear>
> transformed objective value is always integral (scale: 1)
> Presolving Time: 0.00
>
> Matrix has 20 blocks, using 1 aggregated pricing problem!
>
>
>   time | node  | left  |SLP iter|MLP iter|LP it/n| mem |mdpt
> |mvars|ocons|mcons|mcuts|sepa|  dualbound   | primalbound  |  deg   |
>  gap
>    0.1s|     1 |     0 |      1 |      1 |     - |3535k|   0 |   1 |  31
> |  12 |   0 |  0 | 0.000000e+00 |      --      |   0.00%|    Inf
> Starting reduced cost pricing...
>    0.2s|     1 |     0 |     30 |     30 |     - |3573k|   0 |  26 |  31
> |  12 |   0 |  0 | 1.084300e+01 |      --      |   0.00%|    Inf
> s  0.2s|     1 |     0 |     69 |     69 |     - |3631k|   0 |  46 |  31
> |  12 |   0 |  1 | 1.084300e+01 | 1.200000e+01 |   0.00%|  10.67%
> [src/scip/event.c:1170] ERROR: event is neither node nor LP event
> [src/scip/solve.c:4536] ERROR: Error <-9> in function call
> [src/scip/scip.c:14690] ERROR: Error <-9> in function call
> WARNING: Error while solving subproblem in XP Crossover heuristic;
> sub-SCIP terminated with code <-9>
>    0.3s|     1 |     2 |     69 |     69 |     - |3663k|   0 |  66 |  31
> |  12 |   0 |  1 | 1.084300e+01 | 1.200000e+01 |   0.00%|  10.67%
> [src/scip/event.c:1170] ERROR: event is neither node nor LP event
> [src/scip/solve.c:4536] ERROR: Error <-9> in function call
> [src/scip/scip.c:14690] ERROR: Error <-9> in function call
> [src/relax_gcg.c:2303] ERROR: Error <-9> in function call
> [src/scip/relax.c:324] ERROR: Error <-9> in function call
> [src/scip/solve.c:2934] ERROR: Error <-9> in function call
> [src/scip/solve.c:3575] ERROR: Error <-9> in function call
> [src/scip/solve.c:3797] ERROR: Error <-9> in function call
> [src/scip/solve.c:4432] ERROR: Error <-9> in function call
> [src/scip/scip.c:14690] ERROR: Error <-9> in function call
> [src/dialog_gcg.c:417] ERROR: Error <-9> in function call
> [src/scip/dialog.c:824] ERROR: Error <-9> in function call
> [src/scip/dialog.c:366] ERROR: Error <-9> in function call
> [src/scip/scip.c:8959] ERROR: Error <-9> in function call
> [src/main.c:393] ERROR: Error <-9> in function call
> [src/main.c:438] ERROR: Error <-9> in function call
> SCIP Error (-9): method cannot be called with this type of data
>
>
> I've tried with other instances, but I still had errors.
>
> Could anyone tell the solution please.
>
>
> Cordially,
>
> Mohamed Mustapha KABBAJ
>
>
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>

-- 
Christian Puchert, M.Sc.
Research Assistant

Chair of Operations Research
RWTH Aachen University
Kackertstr. 7
52072 Aachen
Germany
Tel: +49 (0)241 80-93380
Fax: +49 (0)241 80-92369
puchert at or.rwth-aachen.de
www.or.rwth-aachen.de