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Bug 152

Summary:	Huge templates cause crash
Product:	UPPAAL	Reporter:	Piotr Kordy <miles>
Component:	Engine	Assignee:	Gerd Behrmann <behrmann>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	P2
Version:	3.4.9
Hardware:	PC
OS:	All
Architecture:
Attachments:	Specification causing problems Specification not working on linux

Description Piotr Kordy 2005-05-10 22:47:26 CEST

When trying to open the specification with 1000 locations (in attachment), the
window message appears: "Fatal error: Server connection lost The server
connection has been killed." Most probably the reason is some kind of buffer
overflow, as reducing number of locations eliminates the problem.

Comment 1 Piotr Kordy 2005-05-10 22:48:55 CEST

Created attachment 34 [details]
Specification causing problems

Comment 2 Robert Olesen 2005-05-10 23:14:11 CEST

reassigning

Comment 3 Gerd Behrmann 2005-05-11 11:45:48 CEST

Which OS do you use? I opened the model with 3.4.9 on my Mac and do not get a crash.

Comment 4 Piotr Kordy 2005-05-11 12:29:50 CEST

I used Windows XP and Linux with kernel 2.6 (marge machine) The message under
Linux is "Could not connect to server"

Comment 5 Gerd Behrmann 2005-05-11 12:49:49 CEST

I tried it on marge using version 3.4.9. Still no crash. Any further information you can give me?

Comment 6 Piotr Kordy 2005-05-11 13:25:18 CEST

I also used version 3.4.9 of Uppaal. The error does not occur immediately. The
model is shown in Uppaal but when I try to click somewhere Uppaal does not
react. It takes around 7s to show model and around 20s to show message that
connection to server was lost. (on marge) When TRON is supplied with the same
specification it ends with segmentation fault (uses 3.4.7 engine though). The
core file indicates: "Process::buildProcess (this=0x8272608) at proc.cc:196" as
the line where it fails.

Comment 7 Piotr Kordy 2005-05-11 15:51:34 CEST

Created attachment 35 [details]
Specification not working on linux

Comment 8 Piotr Kordy 2005-05-11 15:55:56 CEST

The first specification does not work on Windows only. I submitted one that
fails on linux. It has 3500 locations. Up to 3000 locations seems to work under
linux. (before I got connection lost under Linux because of not having
executable bit on executable - my fault)

Comment 9 Gerd Behrmann 2005-05-11 16:03:55 CEST

Confirmed. Thanks for the new model.

Comment 10 Gerd Behrmann 2005-06-03 14:16:53 CEST

Loading the model with verifyta causes a segfault. The problem also exists in 3.5.6.

Comment 11 Gerd Behrmann 2005-06-03 20:34:05 CEST

A fix for 3.5.x has been checked in. Since I do not consider this a serious bug, I do not plan to fix it in 3.4.