# Error in Couenne in amplpy

**URL:** <https://discuss.ampl.com/t/error-in-couenne-in-amplpy/1022>\
**Category:** New to AMPL\
**Tags:** solvers, errors-and-messages, modeling\
**Created:** [March 26, 2024, 4:31pm UTC](https://discuss.ampl.com/t/error-in-couenne-in-amplpy/1022 "2024-03-26T16:31:40Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Monish\_Kumar](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.ampl.com/monish_kumar/32/334_2.png) [@Monish\_Kumar](https://discuss.ampl.com/u/Monish_Kumar)\
**Post date:** [March 26, 2024, 4:31pm UTC](https://discuss.ampl.com/t/error-in-couenne-in-amplpy/1022/1 "2024-03-26T16:31:40Z")

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I am getting the following message when I run the solver with couenne using amplpy

Couenne 0.5.8 – an Open-Source solver for Mixed Integer Nonlinear Optimization  
Mailing list: [couenne@list.coin-or.org](mailto:couenne@list.coin-or.org)  
Instructions: [Couenne, a solver for non-convex MINLP problems](http://www.coin-or.org/Couenne)  
couenne: exit value 18446744072635809797

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<div class="post-metadata">

**Author:** ![Monish\_Kumar](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.ampl.com/monish_kumar/32/334_2.png) [@Monish\_Kumar](https://discuss.ampl.com/u/Monish_Kumar)\
**Post date:** [March 27, 2024, 5:37am UTC](https://discuss.ampl.com/t/error-in-couenne-in-amplpy/1022/2 "2024-03-27T05:37:39Z")

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@fdabrandao Could you help me on this