no Understand in java.library.path

[tdurieux]

Hello @JustinWM ,

I try to run CapGen on Defects4j but I face this error. Can you give additional information on how to set up the environment? Thank you

Exception in thread "main" java.lang.UnsatisfiedLinkError: no Understand in java.library.path
	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1867)
	at java.lang.Runtime.loadLibrary0(Runtime.java:870)
	at java.lang.System.loadLibrary(System.java:1122)
	at com.scitools.understand.Understand.loadNativeLibrary(Understand.java:96)
	at com.scitools.understand.Understand.open(Understand.java:46)
	at org.capgen.util.AnalyzeUnderstand.extractCFG(AnalyzeUnderstand.java:102)
	at org.capgen.main.ExtractSemanticFeature.extractSemanticInfo(ExtractSemanticFeature.java:249)
	at org.capgen.main.ExtractSemanticFeature.generateSemanticFiles(ExtractSemanticFeature.java:72)
	at org.capgen.main.Main.runCapGen(Main.java:229)
	at org.capgen.main.Main.main(Main.java:337)

[MingWEN-CS]

Hi

As I mentioned in the Paper and the documentation, CapGen relies on the tool Understand for semantic analysis.

Installation could be found at https://scitools.com/support/linux-solaris-install/

Thanks very much for your interests :-)

[tdurieux]

You mention some documentation, where is it? Thank you

[tdurieux]

By the way you mention in your paper:

The implementation of CapGen and the details of our evaluation results are publicly available at:

Where can I found the implementation? I was only able to find the binaries.

[MingWEN-CS]

You mention some documentation, where is it? Thank you

The last paragraph in this page. https://github.com/justinwm/CapGen/tree/master/Defects4J.

Yes, currently, we only provided the binary file.

[tdurieux]

I succeed to setup the tool but I don't succeed to generate patches.
It seems the ranking of the ingredients is always 0:
434 org.jfree.chart.renderer.category.AbstractCategoryItemRenderer::::1796::::66566::::66570::::index::::i 0.0 (ranked first for Char-1 in the provided data)
Do you know what can cause this issue?

Thank you

[Dearth]

Hello, I have run in to the above problem even after adding Understand.jar to the classpath. Does the CapGen.jar require an older version of Understand or am I invoking this incorrectly?

Command: java -cp .:/path/to/Understand.jar -jar CapGen.jar configuration_file

CapGen runs as expected until it hits the following error:

Exception in thread "main" java.lang.UnsatisfiedLinkError: no Understand in java.library.path
	at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1860)
	at java.lang.Runtime.loadLibrary0(Runtime.java:870)
	at java.lang.System.loadLibrary(System.java:1122)
	at com.scitools.understand.Understand.loadNativeLibrary(Understand.java:96)
	at com.scitools.understand.Understand.open(Understand.java:46)
	at org.capgen.util.AnalyzeUnderstand.extractCFG(AnalyzeUnderstand.java:102)
	at org.capgen.main.ExtractSemanticFeature.extractSemanticInfo(ExtractSemanticFeature.java:249)
	at org.capgen.main.ExtractSemanticFeature.generateSemanticFiles(ExtractSemanticFeature.java:72)
	at org.capgen.main.Main.runCapGen(Main.java:229)
	at org.capgen.main.Main.main(Main.java:351)

Any help is appreciated.

Thanks,
Dearth