The source files in this repo are the Modelica and AMPL source files of Examples 1, 2, and 3 of the academic paper:

A. Baharev, A. Neumaier, H. Schichl. Failure Modes of Tearing and a Novel Robust Approach. Proceedings of the 12th International Modelica Conference, pages 353-362. May 15-17, 2017, Prague, Czech Republic (DOI 10.3384/ecp17132353).

Examples 1 and 2 demonstrate that applying tearing can lead to completely incorrect results or to initialization failure. However, correct results are obtained for both examples when tearing is turned off altogether.

Example 3 is about performance: It shows that tearing can slow down the solution process drastically. Dymola can easily hang for minutes on problems that are otherwise solvable in milliseconds in AMPL, without tearing.