[SCIP] ERROR: cannot change bounds of multi-aggregated variable

[Benjamin Müller]

Dear Zahra,

looks like a bug in SCIP. Could you write out the MILP in the cip format 
and send it to me, please? Thanks!

Best,
Benjamin

On 2/18/19 9:36 AM, Zahra Eskandari wrote:
> Hi everyone,
> 
> I have a MILP problem which i try to solve with SCIP. when it solved by 
> "count", it generate all feasible solution without any error. But when I 
> use "Optimize" to solve it, it generate these errors:
> 
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/tree.c:1824] 
> ERROR: cannot change bounds of multi-aggregated variable <agg_t_t_z(64)>
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/tree.c:2041] 
> ERROR: Error <-9> in function call
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/scip_var.c:5597] 
> ERROR: Error <-9> in function call
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/cons_xor.c:3251] 
> ERROR: Error <-9> in function call
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/cons_xor.c:5037] 
> ERROR: Error <-9> in function call
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/cons.c:4083] 
> ERROR: Error <-9> in function call
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/scip_solve.c:1050] 
> ERROR: Error <-9> in function call
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/scip_solve.c:1420] 
> ERROR: Error <-9> in function call
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/scip_solve.c:2448] 
> ERROR: Error <-9> in function call
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/scip_solve.c:2660] 
> ERROR: Error <-9> in function call
> [/nfs/OPTI/jenkins/workspace/SCIPOptSuite_linux_release/scipoptsuite-6.0.0/scip/src/scip/heur_rins.c:391] 
> ERROR: Error <-9> in function call
> WARNING: Transformed variable <agg_t_t_z(50)> not released when freeing 
> SCIP. Consider releasing variable first.
> Segmentation fault (core dumped)
> 
> 
> 
> 
> it is notable that I use PySCIPOpt.
> 
> if someone has some opinions, please, let me know.
> 
> Zahra
> 
> 
> _______________________________________________
> Scip mailing list
> Scip at zib.de
> https://listserv.zib.de/mailman/listinfo/scip
> 

-- 
______________________________
Benjamin Müller
Zuse Institute Berlin
Takustr. 7, 14195 Berlin
benjamin.mueller at zib.de
+49 30 841 85-195