./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 04:37:41,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 04:37:41,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-06 04:37:41,352 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 04:37:41,352 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 04:37:41,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 04:37:41,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 04:37:41,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 04:37:41,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 04:37:41,372 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 04:37:41,372 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 04:37:41,372 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 04:37:41,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 04:37:41,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 04:37:41,374 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 04:37:41,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 04:37:41,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 04:37:41,374 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 04:37:41,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 04:37:41,374 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 04:37:41,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 04:37:41,375 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 04:37:41,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 04:37:41,375 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 04:37:41,375 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 04:37:41,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 04:37:41,375 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 04:37:41,375 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 04:37:41,375 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 04:37:41,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 04:37:41,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 04:37:41,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 04:37:41,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:37:41,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 04:37:41,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 04:37:41,376 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 04:37:41,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 04:37:41,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 04:37:41,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 04:37:41,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 04:37:41,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 04:37:41,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 04:37:41,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 04:37:41,377 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bf746ef76f8c8352051d8eb5f02d7a475e14d238622e290fcb51135a3348206 [2025-02-06 04:37:41,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 04:37:41,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 04:37:41,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 04:37:41,600 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 04:37:41,601 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 04:37:41,602 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-02-06 04:37:42,740 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/54fbfc02a/d218311867124fa98f63b60052a8f64a/FLAGcc8bdcbb8 [2025-02-06 04:37:42,752 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException: Cannot invoke "String.equalsIgnoreCase(String)" because "kindStr" is null at org.eclipse.cdt.internal.core.model.PathEntry.kindFromString(PathEntry.java:80) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.decodePathEntry(DefaultPathEntryStore.java:127) at org.eclipse.cdt.internal.core.model.DefaultPathEntryStore.getRawPathEntries(DefaultPathEntryStore.java:97) at org.eclipse.cdt.internal.core.model.PathEntryStoreProxy.getRawPathEntries(PathEntryStoreProxy.java:102) at org.eclipse.cdt.internal.core.model.PathEntryManager.getRawPathEntries(PathEntryManager.java:666) at org.eclipse.cdt.core.model.CoreModel.getRawPathEntries(CoreModel.java:937) at org.eclipse.cdt.core.model.CoreModel.oldIsScannerInformationEmpty(CoreModel.java:1307) at org.eclipse.cdt.core.model.CoreModel.isScannerInformationEmpty(CoreModel.java:1252) at org.eclipse.cdt.internal.core.pdom.indexer.ProjectIndexerInputAdapter.isFileBuildConfigured(ProjectIndexerInputAdapter.java:267) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.isRequiredInIndex(AbstractIndexerTask.java:748) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.extractFiles(AbstractIndexerTask.java:667) at org.eclipse.cdt.internal.core.pdom.AbstractIndexerTask.runTask(AbstractIndexerTask.java:558) at org.eclipse.cdt.internal.core.pdom.indexer.PDOMIndexerTask.run(PDOMIndexerTask.java:164) at org.eclipse.cdt.internal.core.pdom.PDOMIndexerJob.run(PDOMIndexerJob.java:160) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2025-02-06 04:37:42,979 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 04:37:42,979 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c [2025-02-06 04:37:42,987 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/54fbfc02a/d218311867124fa98f63b60052a8f64a/FLAGcc8bdcbb8 [2025-02-06 04:37:43,005 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/54fbfc02a/d218311867124fa98f63b60052a8f64a [2025-02-06 04:37:43,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 04:37:43,008 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 04:37:43,009 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 04:37:43,009 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 04:37:43,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 04:37:43,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415ccde2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43, skipping insertion in model container [2025-02-06 04:37:43,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,032 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 04:37:43,182 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2025-02-06 04:37:43,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:37:43,203 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 04:37:43,235 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/popl20-bad-commit-2.wvr-bad.c[6687,6700] [2025-02-06 04:37:43,239 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 04:37:43,249 INFO L204 MainTranslator]: Completed translation [2025-02-06 04:37:43,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43 WrapperNode [2025-02-06 04:37:43,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 04:37:43,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 04:37:43,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 04:37:43,251 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 04:37:43,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,263 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,300 INFO L138 Inliner]: procedures = 25, calls = 73, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 445 [2025-02-06 04:37:43,300 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 04:37:43,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 04:37:43,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 04:37:43,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 04:37:43,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,308 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,316 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,338 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2025-02-06 04:37:43,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,353 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 04:37:43,368 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 04:37:43,368 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 04:37:43,368 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 04:37:43,369 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (1/1) ... [2025-02-06 04:37:43,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 04:37:43,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 04:37:43,405 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 04:37:43,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 04:37:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 04:37:43,428 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 04:37:43,428 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 04:37:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 04:37:43,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 04:37:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 04:37:43,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 04:37:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2025-02-06 04:37:43,429 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2025-02-06 04:37:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 04:37:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 04:37:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 04:37:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 04:37:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-02-06 04:37:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-02-06 04:37:43,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 04:37:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 04:37:43,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 04:37:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 04:37:43,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 04:37:43,431 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 04:37:43,516 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 04:37:43,517 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 04:37:43,991 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 04:37:43,991 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 04:37:44,323 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 04:37:44,323 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 04:37:44,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:37:44 BoogieIcfgContainer [2025-02-06 04:37:44,324 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 04:37:44,327 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 04:37:44,327 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 04:37:44,330 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 04:37:44,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 04:37:43" (1/3) ... [2025-02-06 04:37:44,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3705c467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:37:44, skipping insertion in model container [2025-02-06 04:37:44,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 04:37:43" (2/3) ... [2025-02-06 04:37:44,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3705c467 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 04:37:44, skipping insertion in model container [2025-02-06 04:37:44,332 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 04:37:44" (3/3) ... [2025-02-06 04:37:44,334 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-commit-2.wvr-bad.c [2025-02-06 04:37:44,346 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 04:37:44,347 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-commit-2.wvr-bad.c that has 5 procedures, 61 locations, 1 initial locations, 8 loop locations, and 1 error locations. [2025-02-06 04:37:44,347 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 04:37:44,398 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-02-06 04:37:44,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 84 transitions, 196 flow [2025-02-06 04:37:44,456 INFO L124 PetriNetUnfolderBase]: 24/80 cut-off events. [2025-02-06 04:37:44,459 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 04:37:44,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 80 events. 24/80 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 179 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 69. Up to 8 conditions per place. [2025-02-06 04:37:44,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 84 transitions, 196 flow [2025-02-06 04:37:44,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 79 transitions, 182 flow [2025-02-06 04:37:44,481 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 04:37:44,492 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@d62c2a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 04:37:44,492 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-02-06 04:37:44,513 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 04:37:44,513 INFO L124 PetriNetUnfolderBase]: 24/78 cut-off events. [2025-02-06 04:37:44,513 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-02-06 04:37:44,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:44,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:37:44,514 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:37:44,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:44,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1918625776, now seen corresponding path program 1 times [2025-02-06 04:37:44,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:44,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869207091] [2025-02-06 04:37:44,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:37:44,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:44,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 04:37:44,654 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 04:37:44,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:44,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:37:44,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:44,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869207091] [2025-02-06 04:37:44,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869207091] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:44,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:44,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:37:44,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143150731] [2025-02-06 04:37:44,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:44,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 04:37:44,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:44,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 04:37:44,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 04:37:44,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2025-02-06 04:37:44,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:44,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:44,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2025-02-06 04:37:44,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:45,639 INFO L124 PetriNetUnfolderBase]: 8494/11195 cut-off events. [2025-02-06 04:37:45,640 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2025-02-06 04:37:45,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21567 conditions, 11195 events. 8494/11195 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 48128 event pairs, 4408 based on Foata normal form. 0/8983 useless extension candidates. Maximal degree in co-relation 20036. Up to 9899 conditions per place. [2025-02-06 04:37:45,727 INFO L140 encePairwiseOnDemand]: 80/84 looper letters, 50 selfloop transitions, 0 changer transitions 0/75 dead transitions. [2025-02-06 04:37:45,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 274 flow [2025-02-06 04:37:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 04:37:45,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-02-06 04:37:45,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 112 transitions. [2025-02-06 04:37:45,738 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-02-06 04:37:45,739 INFO L175 Difference]: Start difference. First operand has 68 places, 79 transitions, 182 flow. Second operand 2 states and 112 transitions. [2025-02-06 04:37:45,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 274 flow [2025-02-06 04:37:45,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 258 flow, removed 0 selfloop flow, removed 8 redundant places. [2025-02-06 04:37:45,753 INFO L231 Difference]: Finished difference. Result has 61 places, 75 transitions, 158 flow [2025-02-06 04:37:45,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=75} [2025-02-06 04:37:45,758 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2025-02-06 04:37:45,759 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 75 transitions, 158 flow [2025-02-06 04:37:45,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 42.0) internal successors, (84), 2 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:45,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:45,760 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:37:45,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 04:37:45,760 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:37:45,761 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:45,761 INFO L85 PathProgramCache]: Analyzing trace with hash 2051309224, now seen corresponding path program 1 times [2025-02-06 04:37:45,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:45,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214273217] [2025-02-06 04:37:45,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:37:45,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:45,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 04:37:45,816 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 04:37:45,818 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:45,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:46,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:37:46,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:46,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214273217] [2025-02-06 04:37:46,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214273217] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:46,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:46,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:37:46,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584530801] [2025-02-06 04:37:46,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:46,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:37:46,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:46,021 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:37:46,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:37:46,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2025-02-06 04:37:46,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 75 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:46,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:46,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2025-02-06 04:37:46,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:47,403 INFO L124 PetriNetUnfolderBase]: 16915/24082 cut-off events. [2025-02-06 04:37:47,404 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2025-02-06 04:37:47,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44181 conditions, 24082 events. 16915/24082 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 783. Compared 139509 event pairs, 4408 based on Foata normal form. 1/19098 useless extension candidates. Maximal degree in co-relation 44178. Up to 11771 conditions per place. [2025-02-06 04:37:47,528 INFO L140 encePairwiseOnDemand]: 76/84 looper letters, 81 selfloop transitions, 7 changer transitions 1/114 dead transitions. [2025-02-06 04:37:47,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 114 transitions, 421 flow [2025-02-06 04:37:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:37:47,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:37:47,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2025-02-06 04:37:47,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-02-06 04:37:47,533 INFO L175 Difference]: Start difference. First operand has 61 places, 75 transitions, 158 flow. Second operand 3 states and 177 transitions. [2025-02-06 04:37:47,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 114 transitions, 421 flow [2025-02-06 04:37:47,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 114 transitions, 421 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 04:37:47,537 INFO L231 Difference]: Finished difference. Result has 64 places, 81 transitions, 205 flow [2025-02-06 04:37:47,538 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=205, PETRI_PLACES=64, PETRI_TRANSITIONS=81} [2025-02-06 04:37:47,539 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2025-02-06 04:37:47,539 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 81 transitions, 205 flow [2025-02-06 04:37:47,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:47,539 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:47,539 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:37:47,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 04:37:47,539 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:37:47,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:47,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1217701020, now seen corresponding path program 1 times [2025-02-06 04:37:47,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:47,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765566668] [2025-02-06 04:37:47,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:37:47,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:47,550 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 04:37:47,558 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 04:37:47,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:47,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:37:47,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:47,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765566668] [2025-02-06 04:37:47,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765566668] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:47,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:47,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:37:47,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875524533] [2025-02-06 04:37:47,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:47,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:37:47,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:47,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:37:47,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:37:47,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2025-02-06 04:37:47,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 81 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:47,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:47,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2025-02-06 04:37:47,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:49,670 INFO L124 PetriNetUnfolderBase]: 31987/42526 cut-off events. [2025-02-06 04:37:49,670 INFO L125 PetriNetUnfolderBase]: For 7869/7974 co-relation queries the response was YES. [2025-02-06 04:37:49,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89210 conditions, 42526 events. 31987/42526 cut-off events. For 7869/7974 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 227997 event pairs, 10250 based on Foata normal form. 1806/36390 useless extension candidates. Maximal degree in co-relation 89205. Up to 21608 conditions per place. [2025-02-06 04:37:49,963 INFO L140 encePairwiseOnDemand]: 77/84 looper letters, 90 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2025-02-06 04:37:49,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 119 transitions, 492 flow [2025-02-06 04:37:49,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:37:49,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:37:49,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2025-02-06 04:37:49,966 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6944444444444444 [2025-02-06 04:37:49,966 INFO L175 Difference]: Start difference. First operand has 64 places, 81 transitions, 205 flow. Second operand 3 states and 175 transitions. [2025-02-06 04:37:49,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 119 transitions, 492 flow [2025-02-06 04:37:49,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 119 transitions, 482 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:37:49,973 INFO L231 Difference]: Finished difference. Result has 66 places, 84 transitions, 234 flow [2025-02-06 04:37:49,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=66, PETRI_TRANSITIONS=84} [2025-02-06 04:37:49,974 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2025-02-06 04:37:49,974 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 84 transitions, 234 flow [2025-02-06 04:37:49,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:49,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:49,975 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:37:49,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 04:37:49,975 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:37:49,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:49,976 INFO L85 PathProgramCache]: Analyzing trace with hash 541486700, now seen corresponding path program 1 times [2025-02-06 04:37:49,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:49,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787470311] [2025-02-06 04:37:49,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:37:49,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:49,992 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 04:37:50,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 04:37:50,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:50,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:50,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:37:50,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:50,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787470311] [2025-02-06 04:37:50,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787470311] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:50,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:50,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:37:50,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463026021] [2025-02-06 04:37:50,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:50,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:37:50,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:50,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:37:50,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:37:50,112 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2025-02-06 04:37:50,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 84 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:50,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:50,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2025-02-06 04:37:50,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:37:54,344 INFO L124 PetriNetUnfolderBase]: 62306/93112 cut-off events. [2025-02-06 04:37:54,345 INFO L125 PetriNetUnfolderBase]: For 25871/26039 co-relation queries the response was YES. [2025-02-06 04:37:54,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192998 conditions, 93112 events. 62306/93112 cut-off events. For 25871/26039 co-relation queries the response was YES. Maximal size of possible extension queue 2841. Compared 712098 event pairs, 19362 based on Foata normal form. 1310/73939 useless extension candidates. Maximal degree in co-relation 192992. Up to 38827 conditions per place. [2025-02-06 04:37:54,808 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 104 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2025-02-06 04:37:54,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 131 transitions, 596 flow [2025-02-06 04:37:54,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:37:54,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:37:54,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2025-02-06 04:37:54,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-02-06 04:37:54,809 INFO L175 Difference]: Start difference. First operand has 66 places, 84 transitions, 234 flow. Second operand 3 states and 177 transitions. [2025-02-06 04:37:54,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 131 transitions, 596 flow [2025-02-06 04:37:54,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 131 transitions, 589 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:37:54,818 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 244 flow [2025-02-06 04:37:54,818 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2025-02-06 04:37:54,818 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2025-02-06 04:37:54,818 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 244 flow [2025-02-06 04:37:54,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:54,819 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:37:54,819 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:37:54,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 04:37:54,819 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:37:54,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:37:54,820 INFO L85 PathProgramCache]: Analyzing trace with hash -333663188, now seen corresponding path program 1 times [2025-02-06 04:37:54,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:37:54,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436423696] [2025-02-06 04:37:54,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:37:54,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:37:54,832 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 04:37:54,839 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 04:37:54,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:37:54,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:37:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:37:54,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:37:54,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436423696] [2025-02-06 04:37:54,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436423696] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:37:54,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:37:54,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 04:37:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716244712] [2025-02-06 04:37:54,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:37:54,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:37:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:37:54,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:37:54,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:37:54,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 84 [2025-02-06 04:37:54,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:37:54,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:37:54,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 84 [2025-02-06 04:37:54,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 04:38:03,092 INFO L124 PetriNetUnfolderBase]: 121552/185734 cut-off events. [2025-02-06 04:38:03,092 INFO L125 PetriNetUnfolderBase]: For 59303/59684 co-relation queries the response was YES. [2025-02-06 04:38:03,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381328 conditions, 185734 events. 121552/185734 cut-off events. For 59303/59684 co-relation queries the response was YES. Maximal size of possible extension queue 5143. Compared 1583983 event pairs, 38270 based on Foata normal form. 2516/146157 useless extension candidates. Maximal degree in co-relation 381321. Up to 76103 conditions per place. [2025-02-06 04:38:04,433 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 106 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2025-02-06 04:38:04,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 133 transitions, 618 flow [2025-02-06 04:38:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 04:38:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 04:38:04,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2025-02-06 04:38:04,434 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-02-06 04:38:04,434 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 244 flow. Second operand 3 states and 177 transitions. [2025-02-06 04:38:04,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 133 transitions, 618 flow [2025-02-06 04:38:04,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 133 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 04:38:04,469 INFO L231 Difference]: Finished difference. Result has 70 places, 86 transitions, 256 flow [2025-02-06 04:38:04,469 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=70, PETRI_TRANSITIONS=86} [2025-02-06 04:38:04,470 INFO L279 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2025-02-06 04:38:04,470 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 86 transitions, 256 flow [2025-02-06 04:38:04,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:04,470 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 04:38:04,470 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 04:38:04,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 04:38:04,471 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-02-06 04:38:04,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 04:38:04,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1192683886, now seen corresponding path program 1 times [2025-02-06 04:38:04,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 04:38:04,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096992797] [2025-02-06 04:38:04,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 04:38:04,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 04:38:04,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 04:38:04,498 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 04:38:04,498 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 04:38:04,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 04:38:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 04:38:04,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 04:38:04,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096992797] [2025-02-06 04:38:04,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096992797] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 04:38:04,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 04:38:04,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 04:38:04,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539866294] [2025-02-06 04:38:04,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 04:38:04,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 04:38:04,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 04:38:04,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 04:38:04,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 04:38:04,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 84 [2025-02-06 04:38:04,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 86 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 04:38:04,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 04:38:04,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 84 [2025-02-06 04:38:04,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand