#1639 heap underflow during 3D maze routing Issue created by vijayank88 Description MPW CI design

uart_i2cm_usb

which passes successfully upto OpenLane tag

2023.01.20

and facing error during GRT with latest. Expected Behavior Complete GRT stage Environment report

Kernel: Linux v3.10.0-1160.49.1.el7.x86_64
Distribution: centos 7
Python: v3.6.8 (OK)
Container Engine: docker v20.10.21 (OK)
OpenLane Git Version: 19c7a083f6d73e425463798f71982ef00c876a0e
pip: INSTALLED
python-venv: INSTALLED
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PDK Version Verification Status: OK
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Git Log (Last 3 Commits)

19c7a08 2023-01-25T11:30:10+02:00 [BOT] Update PDK (#1631) - Openlane Bot -  (HEAD -> master, tag: 2023.01.26, origin/master, origin/HEAD)
0c9a918 2023-01-24T17:09:07+02:00 [BOT] Update magic (#1606) - Openlane Bot -  (tag: 2023.01.25)
1c3c472 2023-01-24T16:37:22+02:00 Add upload size warning in issue form (#1620) - habibayassin -  ()
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Git Remotes

origin	<https://github.com/The-OpenROAD-Project/OpenLane.git> (fetch)
origin	<https://github.com/The-OpenROAD-Project/OpenLane.git> (push)

Reproduction material issue_reproducible.zip Relevant log output

[STEP 16]
[INFO]: Running Global Routing (log: logs/routing/16-global.log)...
[ERROR]: during executing openroad script /openlane/scripts/openroad/groute.tcl
[ERROR]: Log: designs/uart_i2cm_usb/runs/RUN_2023.01.27_16.47.08/logs/routing/16-global.log
[ERROR]: Last 10 lines:
met2       Vertical        86355         58245          32.55%
met3       Horizontal      57570         39217          31.88%
met4       Vertical        34542         20076          41.88%
met5       Horizontal      11514          5712          50.39%
---------------------------------------------------------------

[INFO GRT-0101] Running extra iterations to remove overflow.
[ERROR GRT-0183] Net net83: heap underflow during 3D maze routing.
Error: groute.tcl, 36 GRT-0183
child process exited abnormally

The-OpenROAD-Project/OpenLane