./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:11:44,439 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:11:44,516 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-11 17:11:44,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:11:44,530 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:11:44,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:11:44,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:11:44,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:11:44,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:11:44,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:11:44,559 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:11:44,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:11:44,559 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:11:44,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:11:44,561 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 17:11:44,561 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:11:44,561 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:11:44,562 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:11:44,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:11:44,565 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 17:11:44,565 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:11:44,565 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 17:11:44,565 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-11 17:11:44,565 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:11:44,565 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:11:44,566 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:11:44,566 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 17:11:44,566 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:11:44,566 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:11:44,566 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:11:44,566 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:11:44,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:11:44,567 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:11:44,567 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:11:44,567 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 17:11:44,567 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:11:44,567 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:11:44,567 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:11:44,568 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:11:44,568 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:11:44,568 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:11:44,569 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2024-10-11 17:11:44,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:11:44,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:11:44,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:11:44,810 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:11:44,810 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:11:44,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-10-11 17:11:46,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:11:46,227 ERROR L? ?]: Error during toolchain job processing: java.lang.NullPointerException 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) [2024-10-11 17:11:46,445 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:11:46,446 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2024-10-11 17:11:46,462 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f1b289416/65e4df3cff6b4263974733f0e1f5eb6a/FLAGa3282171f [2024-10-11 17:11:46,476 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/f1b289416/65e4df3cff6b4263974733f0e1f5eb6a [2024-10-11 17:11:46,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:11:46,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:11:46,480 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:11:46,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:11:46,485 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:11:46,485 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:11:46" (1/1) ... [2024-10-11 17:11:46,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ee3ece3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:46, skipping insertion in model container [2024-10-11 17:11:46,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:11:46" (1/1) ... [2024-10-11 17:11:46,527 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:11:46,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:11:46,946 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:11:46,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:11:47,099 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:11:47,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47 WrapperNode [2024-10-11 17:11:47,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:11:47,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:11:47,101 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:11:47,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:11:47,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,149 INFO L138 Inliner]: procedures = 272, calls = 50, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 389 [2024-10-11 17:11:47,153 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:11:47,153 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:11:47,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:11:47,154 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:11:47,161 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,161 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,168 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,168 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,181 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,187 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,188 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:11:47,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:11:47,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:11:47,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:11:47,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (1/1) ... [2024-10-11 17:11:47,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:11:47,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:47,219 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:11:47,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:11:47,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 17:11:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:11:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 17:11:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-11 17:11:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-11 17:11:47,264 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 17:11:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:11:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 17:11:47,265 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 17:11:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-11 17:11:47,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:11:47,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:11:47,267 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 17:11:47,387 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:11:47,389 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:11:47,773 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 17:11:47,774 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:11:47,847 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:11:47,848 INFO L314 CfgBuilder]: Removed 35 assume(true) statements. [2024-10-11 17:11:47,848 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:11:47 BoogieIcfgContainer [2024-10-11 17:11:47,848 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:11:47,850 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:11:47,850 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:11:47,857 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:11:47,857 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:11:46" (1/3) ... [2024-10-11 17:11:47,858 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418b1159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:11:47, skipping insertion in model container [2024-10-11 17:11:47,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:11:47" (2/3) ... [2024-10-11 17:11:47,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418b1159 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:11:47, skipping insertion in model container [2024-10-11 17:11:47,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:11:47" (3/3) ... [2024-10-11 17:11:47,863 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2024-10-11 17:11:47,894 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:11:47,894 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-10-11 17:11:47,894 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 17:11:47,997 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 17:11:48,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 390 transitions, 787 flow [2024-10-11 17:11:48,286 INFO L124 PetriNetUnfolderBase]: 78/628 cut-off events. [2024-10-11 17:11:48,286 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 17:11:48,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 628 events. 78/628 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3425 event pairs, 0 based on Foata normal form. 0/518 useless extension candidates. Maximal degree in co-relation 354. Up to 8 conditions per place. [2024-10-11 17:11:48,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 390 transitions, 787 flow [2024-10-11 17:11:48,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 390 transitions, 787 flow [2024-10-11 17:11:48,335 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:11:48,343 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;@43326b01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:11:48,343 INFO L334 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2024-10-11 17:11:48,351 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:11:48,351 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-10-11 17:11:48,351 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:11:48,351 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:48,352 INFO L204 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, 1, 1, 1] [2024-10-11 17:11:48,353 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:48,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:48,357 INFO L85 PathProgramCache]: Analyzing trace with hash 354593967, now seen corresponding path program 1 times [2024-10-11 17:11:48,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:48,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32115796] [2024-10-11 17:11:48,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:48,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:48,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:48,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32115796] [2024-10-11 17:11:48,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32115796] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:48,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:48,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:11:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112797576] [2024-10-11 17:11:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:48,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:48,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:48,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:48,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:11:48,719 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 390 [2024-10-11 17:11:48,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 390 transitions, 787 flow. Second operand has 3 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 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) [2024-10-11 17:11:48,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:48,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 390 [2024-10-11 17:11:48,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:49,094 INFO L124 PetriNetUnfolderBase]: 181/2323 cut-off events. [2024-10-11 17:11:49,094 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2024-10-11 17:11:49,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2670 conditions, 2323 events. 181/2323 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19815 event pairs, 136 based on Foata normal form. 404/2527 useless extension candidates. Maximal degree in co-relation 2390. Up to 340 conditions per place. [2024-10-11 17:11:49,106 INFO L140 encePairwiseOnDemand]: 346/390 looper letters, 31 selfloop transitions, 2 changer transitions 0/344 dead transitions. [2024-10-11 17:11:49,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 344 transitions, 761 flow [2024-10-11 17:11:49,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:11:49,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:11:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1018 transitions. [2024-10-11 17:11:49,120 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8700854700854701 [2024-10-11 17:11:49,122 INFO L175 Difference]: Start difference. First operand has 345 places, 390 transitions, 787 flow. Second operand 3 states and 1018 transitions. [2024-10-11 17:11:49,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 344 transitions, 761 flow [2024-10-11 17:11:49,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 344 transitions, 761 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:11:49,131 INFO L231 Difference]: Finished difference. Result has 342 places, 344 transitions, 705 flow [2024-10-11 17:11:49,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=705, PETRI_PLACES=342, PETRI_TRANSITIONS=344} [2024-10-11 17:11:49,136 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, -3 predicate places. [2024-10-11 17:11:49,136 INFO L471 AbstractCegarLoop]: Abstraction has has 342 places, 344 transitions, 705 flow [2024-10-11 17:11:49,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.3333333333333) internal successors, (946), 3 states have internal predecessors, (946), 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) [2024-10-11 17:11:49,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:49,137 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:11:49,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:11:49,138 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:49,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:49,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1610010690, now seen corresponding path program 1 times [2024-10-11 17:11:49,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:49,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842175222] [2024-10-11 17:11:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:49,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:49,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:49,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:49,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842175222] [2024-10-11 17:11:49,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842175222] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:49,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58330561] [2024-10-11 17:11:49,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:49,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:49,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:49,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:49,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:11:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:49,450 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 17:11:49,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:49,552 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:11:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:49,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58330561] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:11:49,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:11:49,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 17:11:49,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812497414] [2024-10-11 17:11:49,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:11:49,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:11:49,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:49,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:11:49,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:11:49,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 390 [2024-10-11 17:11:49,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 344 transitions, 705 flow. Second operand has 10 states, 10 states have (on average 312.8) internal successors, (3128), 10 states have internal predecessors, (3128), 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) [2024-10-11 17:11:49,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:49,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 390 [2024-10-11 17:11:49,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:50,111 INFO L124 PetriNetUnfolderBase]: 181/2330 cut-off events. [2024-10-11 17:11:50,112 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2024-10-11 17:11:50,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2696 conditions, 2330 events. 181/2330 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 19744 event pairs, 136 based on Foata normal form. 2/2132 useless extension candidates. Maximal degree in co-relation 2660. Up to 340 conditions per place. [2024-10-11 17:11:50,129 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 35 selfloop transitions, 9 changer transitions 0/352 dead transitions. [2024-10-11 17:11:50,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 352 transitions, 811 flow [2024-10-11 17:11:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:11:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 17:11:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2845 transitions. [2024-10-11 17:11:50,139 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8105413105413105 [2024-10-11 17:11:50,139 INFO L175 Difference]: Start difference. First operand has 342 places, 344 transitions, 705 flow. Second operand 9 states and 2845 transitions. [2024-10-11 17:11:50,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 352 transitions, 811 flow [2024-10-11 17:11:50,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 352 transitions, 809 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:11:50,148 INFO L231 Difference]: Finished difference. Result has 352 places, 350 transitions, 753 flow [2024-10-11 17:11:50,148 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=753, PETRI_PLACES=352, PETRI_TRANSITIONS=350} [2024-10-11 17:11:50,149 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 7 predicate places. [2024-10-11 17:11:50,149 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 350 transitions, 753 flow [2024-10-11 17:11:50,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 312.8) internal successors, (3128), 10 states have internal predecessors, (3128), 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) [2024-10-11 17:11:50,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:50,152 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2024-10-11 17:11:50,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-11 17:11:50,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:50,358 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:50,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash 61864034, now seen corresponding path program 2 times [2024-10-11 17:11:50,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:50,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085324346] [2024-10-11 17:11:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:50,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:50,643 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:50,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:50,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085324346] [2024-10-11 17:11:50,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085324346] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:50,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141350316] [2024-10-11 17:11:50,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:11:50,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:50,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:50,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:50,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:11:50,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:11:50,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:11:50,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 17:11:50,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:50,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 17:11:50,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-11 17:11:50,834 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:11:50,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-11 17:11:50,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:11:50,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-11 17:11:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 17:11:50,903 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:11:50,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141350316] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:50,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:11:50,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-10-11 17:11:50,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058647324] [2024-10-11 17:11:50,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:50,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 17:11:50,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:50,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 17:11:50,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-10-11 17:11:51,257 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 390 [2024-10-11 17:11:51,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 350 transitions, 753 flow. Second operand has 8 states, 8 states have (on average 242.125) internal successors, (1937), 8 states have internal predecessors, (1937), 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) [2024-10-11 17:11:51,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:51,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 390 [2024-10-11 17:11:51,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:52,191 INFO L124 PetriNetUnfolderBase]: 2278/8749 cut-off events. [2024-10-11 17:11:52,191 INFO L125 PetriNetUnfolderBase]: For 14/17 co-relation queries the response was YES. [2024-10-11 17:11:52,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13140 conditions, 8749 events. 2278/8749 cut-off events. For 14/17 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 88785 event pairs, 1725 based on Foata normal form. 1/7989 useless extension candidates. Maximal degree in co-relation 13075. Up to 4195 conditions per place. [2024-10-11 17:11:52,223 INFO L140 encePairwiseOnDemand]: 378/390 looper letters, 162 selfloop transitions, 11 changer transitions 0/418 dead transitions. [2024-10-11 17:11:52,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 418 transitions, 1235 flow [2024-10-11 17:11:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:11:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-11 17:11:52,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2103 transitions. [2024-10-11 17:11:52,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6740384615384616 [2024-10-11 17:11:52,227 INFO L175 Difference]: Start difference. First operand has 352 places, 350 transitions, 753 flow. Second operand 8 states and 2103 transitions. [2024-10-11 17:11:52,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 418 transitions, 1235 flow [2024-10-11 17:11:52,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 418 transitions, 1229 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-10-11 17:11:52,233 INFO L231 Difference]: Finished difference. Result has 363 places, 357 transitions, 814 flow [2024-10-11 17:11:52,234 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=814, PETRI_PLACES=363, PETRI_TRANSITIONS=357} [2024-10-11 17:11:52,234 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 18 predicate places. [2024-10-11 17:11:52,235 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 357 transitions, 814 flow [2024-10-11 17:11:52,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 242.125) internal successors, (1937), 8 states have internal predecessors, (1937), 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) [2024-10-11 17:11:52,236 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:52,236 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 17:11:52,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-11 17:11:52,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:52,441 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:52,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:52,442 INFO L85 PathProgramCache]: Analyzing trace with hash -140062528, now seen corresponding path program 1 times [2024-10-11 17:11:52,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:52,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836135931] [2024-10-11 17:11:52,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:52,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:52,590 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:11:52,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:52,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836135931] [2024-10-11 17:11:52,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836135931] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:52,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569252774] [2024-10-11 17:11:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:52,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:52,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:52,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:52,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:11:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:52,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-11 17:11:52,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:52,708 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:11:52,708 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:11:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:11:52,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569252774] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:11:52,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:11:52,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2024-10-11 17:11:52,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294086552] [2024-10-11 17:11:52,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:11:52,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-10-11 17:11:52,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:52,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-10-11 17:11:52,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2024-10-11 17:11:52,880 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 390 [2024-10-11 17:11:52,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 357 transitions, 814 flow. Second operand has 18 states, 18 states have (on average 312.94444444444446) internal successors, (5633), 18 states have internal predecessors, (5633), 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) [2024-10-11 17:11:52,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:52,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 390 [2024-10-11 17:11:52,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:53,374 INFO L124 PetriNetUnfolderBase]: 192/2249 cut-off events. [2024-10-11 17:11:53,374 INFO L125 PetriNetUnfolderBase]: For 33/37 co-relation queries the response was YES. [2024-10-11 17:11:53,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 2249 events. 192/2249 cut-off events. For 33/37 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 19122 event pairs, 138 based on Foata normal form. 4/2057 useless extension candidates. Maximal degree in co-relation 2602. Up to 341 conditions per place. [2024-10-11 17:11:53,388 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 39 selfloop transitions, 21 changer transitions 0/375 dead transitions. [2024-10-11 17:11:53,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 375 transitions, 1022 flow [2024-10-11 17:11:53,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-11 17:11:53,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-10-11 17:11:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6595 transitions. [2024-10-11 17:11:53,397 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8052503052503053 [2024-10-11 17:11:53,398 INFO L175 Difference]: Start difference. First operand has 363 places, 357 transitions, 814 flow. Second operand 21 states and 6595 transitions. [2024-10-11 17:11:53,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 375 transitions, 1022 flow [2024-10-11 17:11:53,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 375 transitions, 1015 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-11 17:11:53,403 INFO L231 Difference]: Finished difference. Result has 386 places, 370 transitions, 937 flow [2024-10-11 17:11:53,404 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=937, PETRI_PLACES=386, PETRI_TRANSITIONS=370} [2024-10-11 17:11:53,404 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 41 predicate places. [2024-10-11 17:11:53,405 INFO L471 AbstractCegarLoop]: Abstraction has has 386 places, 370 transitions, 937 flow [2024-10-11 17:11:53,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 312.94444444444446) internal successors, (5633), 18 states have internal predecessors, (5633), 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) [2024-10-11 17:11:53,408 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:53,408 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 17:11:53,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 17:11:53,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:53,609 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:53,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:53,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2131183360, now seen corresponding path program 2 times [2024-10-11 17:11:53,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:53,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168914078] [2024-10-11 17:11:53,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:53,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:11:53,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:53,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168914078] [2024-10-11 17:11:53,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168914078] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:53,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276808083] [2024-10-11 17:11:53,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:11:53,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:53,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:53,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:53,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:11:54,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:11:54,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:11:54,008 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-11 17:11:54,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:54,021 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-10-11 17:11:54,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-10-11 17:11:54,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:11:54,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-10-11 17:11:54,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:11:54,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-10-11 17:11:54,126 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-10-11 17:11:54,126 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:11:54,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276808083] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:54,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:11:54,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2024-10-11 17:11:54,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387572038] [2024-10-11 17:11:54,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:54,127 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:11:54,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:11:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2024-10-11 17:11:54,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 390 [2024-10-11 17:11:54,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 370 transitions, 937 flow. Second operand has 6 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 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) [2024-10-11 17:11:54,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:54,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 390 [2024-10-11 17:11:54,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:55,565 INFO L124 PetriNetUnfolderBase]: 2359/8962 cut-off events. [2024-10-11 17:11:55,565 INFO L125 PetriNetUnfolderBase]: For 374/378 co-relation queries the response was YES. [2024-10-11 17:11:55,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14042 conditions, 8962 events. 2359/8962 cut-off events. For 374/378 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 90741 event pairs, 1820 based on Foata normal form. 29/8240 useless extension candidates. Maximal degree in co-relation 13893. Up to 4322 conditions per place. [2024-10-11 17:11:55,609 INFO L140 encePairwiseOnDemand]: 363/390 looper letters, 135 selfloop transitions, 92 changer transitions 0/486 dead transitions. [2024-10-11 17:11:55,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 486 transitions, 1645 flow [2024-10-11 17:11:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:11:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 17:11:55,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1674 transitions. [2024-10-11 17:11:55,612 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7153846153846154 [2024-10-11 17:11:55,612 INFO L175 Difference]: Start difference. First operand has 386 places, 370 transitions, 937 flow. Second operand 6 states and 1674 transitions. [2024-10-11 17:11:55,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 486 transitions, 1645 flow [2024-10-11 17:11:55,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 486 transitions, 1621 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-11 17:11:55,621 INFO L231 Difference]: Finished difference. Result has 390 places, 454 transitions, 1521 flow [2024-10-11 17:11:55,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1521, PETRI_PLACES=390, PETRI_TRANSITIONS=454} [2024-10-11 17:11:55,622 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 45 predicate places. [2024-10-11 17:11:55,622 INFO L471 AbstractCegarLoop]: Abstraction has has 390 places, 454 transitions, 1521 flow [2024-10-11 17:11:55,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 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) [2024-10-11 17:11:55,623 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:55,623 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 17:11:55,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-11 17:11:55,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:55,828 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:55,829 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:55,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1642173509, now seen corresponding path program 1 times [2024-10-11 17:11:55,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:55,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73788540] [2024-10-11 17:11:55,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:55,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:56,223 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:11:56,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:56,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73788540] [2024-10-11 17:11:56,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73788540] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:11:56,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908476797] [2024-10-11 17:11:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:56,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:56,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:11:56,229 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:11:56,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:11:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:56,322 INFO L255 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-11 17:11:56,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:11:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:11:56,388 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:11:56,568 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:11:56,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908476797] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:11:56,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:11:56,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-10-11 17:11:56,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804187241] [2024-10-11 17:11:56,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:11:56,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 17:11:56,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:56,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 17:11:56,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2024-10-11 17:11:56,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 390 [2024-10-11 17:11:56,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 454 transitions, 1521 flow. Second operand has 23 states, 23 states have (on average 313.04347826086956) internal successors, (7200), 23 states have internal predecessors, (7200), 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) [2024-10-11 17:11:56,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:56,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 390 [2024-10-11 17:11:56,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:11:57,316 INFO L124 PetriNetUnfolderBase]: 340/3019 cut-off events. [2024-10-11 17:11:57,316 INFO L125 PetriNetUnfolderBase]: For 559/627 co-relation queries the response was YES. [2024-10-11 17:11:57,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4562 conditions, 3019 events. 340/3019 cut-off events. For 559/627 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 27461 event pairs, 136 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 4333. Up to 418 conditions per place. [2024-10-11 17:11:57,332 INFO L140 encePairwiseOnDemand]: 384/390 looper letters, 42 selfloop transitions, 30 changer transitions 0/471 dead transitions. [2024-10-11 17:11:57,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 471 transitions, 1787 flow [2024-10-11 17:11:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-11 17:11:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-11 17:11:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9405 transitions. [2024-10-11 17:11:57,345 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8038461538461539 [2024-10-11 17:11:57,345 INFO L175 Difference]: Start difference. First operand has 390 places, 454 transitions, 1521 flow. Second operand 30 states and 9405 transitions. [2024-10-11 17:11:57,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 471 transitions, 1787 flow [2024-10-11 17:11:57,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 471 transitions, 1769 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-10-11 17:11:57,354 INFO L231 Difference]: Finished difference. Result has 423 places, 464 transitions, 1655 flow [2024-10-11 17:11:57,355 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1503, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1655, PETRI_PLACES=423, PETRI_TRANSITIONS=464} [2024-10-11 17:11:57,356 INFO L277 CegarLoopForPetriNet]: 345 programPoint places, 78 predicate places. [2024-10-11 17:11:57,356 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 464 transitions, 1655 flow [2024-10-11 17:11:57,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 313.04347826086956) internal successors, (7200), 23 states have internal predecessors, (7200), 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) [2024-10-11 17:11:57,358 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:57,358 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-10-11 17:11:57,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 17:11:57,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:11:57,559 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2024-10-11 17:11:57,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:57,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1802028206, now seen corresponding path program 2 times [2024-10-11 17:11:57,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:57,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531716648] [2024-10-11 17:11:57,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:57,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:11:57,580 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 17:11:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 17:11:57,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 17:11:57,634 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 17:11:57,635 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2024-10-11 17:11:57,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2024-10-11 17:11:57,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2024-10-11 17:11:57,637 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2024-10-11 17:11:57,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2024-10-11 17:11:57,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2024-10-11 17:11:57,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2024-10-11 17:11:57,641 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2024-10-11 17:11:57,642 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2024-10-11 17:11:57,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2024-10-11 17:11:57,643 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2024-10-11 17:11:57,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:11:57,643 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1] [2024-10-11 17:11:57,645 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 17:11:57,649 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 17:11:57,701 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 17:11:57,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 446 places, 505 transitions, 1026 flow [2024-10-11 17:11:57,889 INFO L124 PetriNetUnfolderBase]: 126/1009 cut-off events. [2024-10-11 17:11:57,893 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 17:11:57,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 1009 events. 126/1009 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6191 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 630. Up to 12 conditions per place. [2024-10-11 17:11:57,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 446 places, 505 transitions, 1026 flow [2024-10-11 17:11:57,927 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 446 places, 505 transitions, 1026 flow [2024-10-11 17:11:57,928 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:11:57,928 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;@43326b01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:11:57,928 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-10-11 17:11:57,931 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 17:11:57,931 INFO L124 PetriNetUnfolderBase]: 4/60 cut-off events. [2024-10-11 17:11:57,931 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 17:11:57,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:11:57,931 INFO L204 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, 1, 1, 1] [2024-10-11 17:11:57,931 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-11 17:11:57,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:11:57,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1380409905, now seen corresponding path program 1 times [2024-10-11 17:11:57,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:11:57,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940548500] [2024-10-11 17:11:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:11:57,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:11:57,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:11:57,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:11:57,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:11:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940548500] [2024-10-11 17:11:57,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940548500] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:11:57,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:11:57,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:11:57,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431206497] [2024-10-11 17:11:57,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:11:57,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:11:57,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:11:57,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:11:57,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:11:57,963 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 505 [2024-10-11 17:11:57,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 505 transitions, 1026 flow. Second operand has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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) [2024-10-11 17:11:57,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:11:57,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 505 [2024-10-11 17:11:57,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:00,966 INFO L124 PetriNetUnfolderBase]: 3251/22828 cut-off events. [2024-10-11 17:12:00,966 INFO L125 PetriNetUnfolderBase]: For 151/155 co-relation queries the response was YES. [2024-10-11 17:12:01,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27608 conditions, 22828 events. 3251/22828 cut-off events. For 151/155 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 311078 event pairs, 2680 based on Foata normal form. 5658/26597 useless extension candidates. Maximal degree in co-relation 24734. Up to 4707 conditions per place. [2024-10-11 17:12:01,225 INFO L140 encePairwiseOnDemand]: 448/505 looper letters, 41 selfloop transitions, 2 changer transitions 0/444 dead transitions. [2024-10-11 17:12:01,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 444 transitions, 990 flow [2024-10-11 17:12:01,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:12:01,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 17:12:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1314 transitions. [2024-10-11 17:12:01,238 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8673267326732673 [2024-10-11 17:12:01,238 INFO L175 Difference]: Start difference. First operand has 446 places, 505 transitions, 1026 flow. Second operand 3 states and 1314 transitions. [2024-10-11 17:12:01,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 444 transitions, 990 flow [2024-10-11 17:12:01,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 444 transitions, 990 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 17:12:01,248 INFO L231 Difference]: Finished difference. Result has 441 places, 444 transitions, 914 flow [2024-10-11 17:12:01,253 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=914, PETRI_PLACES=441, PETRI_TRANSITIONS=444} [2024-10-11 17:12:01,253 INFO L277 CegarLoopForPetriNet]: 446 programPoint places, -5 predicate places. [2024-10-11 17:12:01,254 INFO L471 AbstractCegarLoop]: Abstraction has has 441 places, 444 transitions, 914 flow [2024-10-11 17:12:01,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.3333333333333) internal successors, (1219), 3 states have internal predecessors, (1219), 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) [2024-10-11 17:12:01,254 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:01,254 INFO L204 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:12:01,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 17:12:01,254 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-11 17:12:01,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:01,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1875125979, now seen corresponding path program 1 times [2024-10-11 17:12:01,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:01,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93517402] [2024-10-11 17:12:01,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:01,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:01,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:01,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93517402] [2024-10-11 17:12:01,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93517402] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:01,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332768303] [2024-10-11 17:12:01,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:01,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:01,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:01,357 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:01,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 17:12:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:01,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-11 17:12:01,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:01,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:12:01,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:01,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332768303] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:12:01,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:12:01,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-10-11 17:12:01,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354157996] [2024-10-11 17:12:01,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:12:01,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:12:01,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:01,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:12:01,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:12:01,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 402 out of 505 [2024-10-11 17:12:01,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 444 transitions, 914 flow. Second operand has 10 states, 10 states have (on average 403.8) internal successors, (4038), 10 states have internal predecessors, (4038), 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) [2024-10-11 17:12:01,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:01,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 402 of 505 [2024-10-11 17:12:01,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 17:12:04,531 INFO L124 PetriNetUnfolderBase]: 3251/22835 cut-off events. [2024-10-11 17:12:04,531 INFO L125 PetriNetUnfolderBase]: For 152/156 co-relation queries the response was YES. [2024-10-11 17:12:04,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27634 conditions, 22835 events. 3251/22835 cut-off events. For 152/156 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 311382 event pairs, 2680 based on Foata normal form. 2/20948 useless extension candidates. Maximal degree in co-relation 27597. Up to 4707 conditions per place. [2024-10-11 17:12:04,724 INFO L140 encePairwiseOnDemand]: 499/505 looper letters, 45 selfloop transitions, 9 changer transitions 0/452 dead transitions. [2024-10-11 17:12:04,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 452 transitions, 1040 flow [2024-10-11 17:12:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-11 17:12:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-11 17:12:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3674 transitions. [2024-10-11 17:12:04,730 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8083608360836083 [2024-10-11 17:12:04,731 INFO L175 Difference]: Start difference. First operand has 441 places, 444 transitions, 914 flow. Second operand 9 states and 3674 transitions. [2024-10-11 17:12:04,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 452 transitions, 1040 flow [2024-10-11 17:12:04,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 452 transitions, 1038 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-11 17:12:04,736 INFO L231 Difference]: Finished difference. Result has 451 places, 450 transitions, 962 flow [2024-10-11 17:12:04,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=505, PETRI_DIFFERENCE_MINUEND_FLOW=912, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=962, PETRI_PLACES=451, PETRI_TRANSITIONS=450} [2024-10-11 17:12:04,737 INFO L277 CegarLoopForPetriNet]: 446 programPoint places, 5 predicate places. [2024-10-11 17:12:04,738 INFO L471 AbstractCegarLoop]: Abstraction has has 451 places, 450 transitions, 962 flow [2024-10-11 17:12:04,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 403.8) internal successors, (4038), 10 states have internal predecessors, (4038), 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) [2024-10-11 17:12:04,739 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 17:12:04,739 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 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] [2024-10-11 17:12:04,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 17:12:04,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-10-11 17:12:04,941 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2024-10-11 17:12:04,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:12:04,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1739394907, now seen corresponding path program 2 times [2024-10-11 17:12:04,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:12:04,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479090138] [2024-10-11 17:12:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:12:04,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:12:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:12:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:12:05,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:12:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479090138] [2024-10-11 17:12:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479090138] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:12:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371586208] [2024-10-11 17:12:05,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:12:05,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:12:05,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:12:05,043 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:12:05,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 17:12:05,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-11 17:12:05,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:12:05,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-10-11 17:12:05,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:12:05,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-11 17:12:05,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-10-11 17:12:05,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:12:05,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-10-11 17:12:05,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:12:05,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-10-11 17:12:05,348 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-10-11 17:12:05,348 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:12:05,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371586208] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:12:05,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:12:05,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-10-11 17:12:05,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350158905] [2024-10-11 17:12:05,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:12:05,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 17:12:05,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:12:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 17:12:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-10-11 17:12:05,689 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 505 [2024-10-11 17:12:05,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 450 transitions, 962 flow. Second operand has 8 states, 8 states have (on average 313.125) internal successors, (2505), 8 states have internal predecessors, (2505), 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) [2024-10-11 17:12:05,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 17:12:05,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 505 [2024-10-11 17:12:05,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand