error with cppad

[001SCH]

Hi!, when I started the MPC_Node setting target point, the car could not start, and reported an error. I reinstalled ipopt several times according to the tutorial and it did not work. Do you know how to solve this problem:

cppad-20160000.1 error from a known source: yq = f.Forward(q, xq): a zero order Taylor coefficient is nan. Corresponding independent variables vector was written to binary a file. vector_size = 158 file_name = /tmp/filer6SLLw index = 82

Error detected by false result for if( CppAD::isnan( yq[ (q+1) index + 0 ] ) at line 224 in the file /usr/include/cppad/local/forward.hpp MPC_Node: /usr/include/cppad/utility/error_handler.hpp:207: static void CppAD::ErrorHandler::Default(bool, in t, const char, const char, const char): Assertion `false' failed. [MPC_Node-6] process has died [pid 13466, exit code -6, cmd /home/sz/racecar/devel/lib/art_racecar/MPC_Node / move_base_node/NavfnROS/plan:=/move_base/NavfnROS/plan __name:=MPC_Node __log:=/home/sz/.ros/log/78ff706a-a63 9-11e9-8c68-00e15c683339/MPC_Node-6.log]. log file: /home/sz/.ros/log/78ff706a-a639-11e9-8c68-00e15c683339/MPC_Node-6*.log

[haochihlin]

Hi @001SCH ,

I think for the issue of cppad, you should ask "COIN-OR" directly. For testing, if you can not compile sucessfully on your environment, I suggest you use our released VirtualBox image first.

[mustang66ytz]

@001SCH I also encountered this issue when in my own MPC work. Have you figured out the fix to this bug? I would appreciate so much on your help for this!

[Chuan701]

@haochihlin @001SCH @mustang66ytz Hello, everyone~ Do you have a solution now? Thank you

[alperen-keser]

@Chuan701 @mustang66ytz @haochihlin @001SCH any updates on the issue? Have the same problem