Prevent IllegalArgumentException

[jbonzohln]

When running my tests I get this error:

java.lang.IllegalArgumentException: Count 'n' must be non-negative, but was -5.

	at kotlin.text.StringsKt__StringsJVMKt.repeat(StringsJVM.kt:775)
	at org.jetbrains.kotlinx.lincheck.strategy.managed.TraceNodePrefixFactory.prefixForNode$lambda$5(TraceReporter.kt:628)
	at org.jetbrains.kotlinx.lincheck.strategy.managed.TraceNode.getPrefix(TraceReporter.kt:354)
	at org.jetbrains.kotlinx.lincheck.strategy.managed.TraceLeafEvent.addRepresentationTo(TraceReporter.kt:415)
	at org.jetbrains.kotlinx.lincheck.strategy.managed.TraceReporterKt.traceGraphToRepresentationList(TraceReporter.kt:343)
	at org.jetbrains.kotlinx.lincheck.strategy.managed.TraceReporterKt.appendShortTrace(TraceReporter.kt:43)
	at org.jetbrains.kotlinx.lincheck.strategy.managed.TraceReporterKt.appendTrace(TraceReporter.kt:31)
	at org.jetbrains.kotlinx.lincheck.ReporterKt.appendFailure(Reporter.kt:392)
	at org.jetbrains.kotlinx.lincheck.strategy.LincheckFailure.toString(LincheckFailure.kt:22)
	at java.base/java.lang.StringConcatHelper.stringOf(StringConcatHelper.java:467)
	at java.base/java.lang.StringConcatHelper.simpleConcat(StringConcatHelper.java:422)
	at org.jetbrains.kotlinx.lincheck.LincheckAssertionError.<init>(LincheckAssertionError.kt:17)
	at org.jetbrains.kotlinx.lincheck.LinChecker$check$1.invoke(LinChecker.kt:48)
	at org.jetbrains.kotlinx.lincheck.LinChecker$check$1.invoke(LinChecker.kt:47)
	at org.jetbrains.kotlinx.lincheck.LinChecker.checkImpl$lincheck(LinChecker.kt:67)
	at org.jetbrains.kotlinx.lincheck.LinChecker.check(LinChecker.kt:47)
	at org.jetbrains.kotlinx.lincheck.LinChecker$Companion.check(LinChecker.kt:195)
	at org.jetbrains.kotlinx.lincheck.LinChecker.check(LinChecker.kt)

[eupp]

Could be related to #404

[avpotapov00]

Hi, @jbonzohln
Thanks for the PR!
Could you please provide the test that caused the failure?
Let's fix it a little bit in a different way.

[jbonzohln]

@avpotapov00 No, sorry it's company code I can't share. I believe the cause is a very deep call stack though.