Pyomo 6.4 can't use scip 8.0.1

[qiniuweihe]

As title, when I use scip to solve my problem, it can't start to solve problem:

[mrmundt]

What version of pyomo are you using?

[qiniuweihe]

[blnicho]

@qiniuweihe is this still an issue for you? If so, please post the solver output by adding the option tee=True to your call to solve.

[whart222]

I've confirmed that the Pyomo tests with SCIP all pass on the Pyomo 6.4.3 development branch. I don't know that there were any fixes to that branch, though. Hence, we'll need an example of the test failure to replicate this issue.

[qiniuweihe]

It doesn't display the log:

[qiniuweihe]

Maybe it is the model problem? But cbc can solve it....

[jsiirola]

According to the SCIP source, -4 is

SCIP_NOFILE  =  -4,       /**< file not found error */

I am not at all sure why you are getting that error, unless SCIP also raises that for other conditions (like failing to read an NL file). Can you confirm that you are still seeing this error with the current Pyomo and SCIP releases? If so, please pose a minimal example that reproduces the problem. Without that, there is little we can do to resolve this and will need to close this issue.

[mrmundt]

@qiniuweihe - Are you still experiencing this error?