./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread/queue_longest.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread/queue_longest.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 09:16:32,916 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 09:16:32,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 09:16:32,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 09:16:32,957 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 09:16:32,960 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 09:16:32,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 09:16:32,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 09:16:32,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 09:16:32,971 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 09:16:32,972 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 09:16:32,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 09:16:32,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 09:16:32,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 09:16:32,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 09:16:32,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 09:16:32,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 09:16:32,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 09:16:32,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 09:16:32,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 09:16:32,999 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 09:16:33,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 09:16:33,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 09:16:33,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 09:16:33,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 09:16:33,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 09:16:33,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 09:16:33,011 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 09:16:33,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 09:16:33,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 09:16:33,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 09:16:33,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 09:16:33,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 09:16:33,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 09:16:33,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 09:16:33,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 09:16:33,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 09:16:33,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 09:16:33,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 09:16:33,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 09:16:33,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 09:16:33,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 09:16:33,056 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 09:16:33,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 09:16:33,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 09:16:33,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 09:16:33,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 09:16:33,059 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 09:16:33,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 09:16:33,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 09:16:33,060 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 09:16:33,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 09:16:33,061 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 09:16:33,061 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 09:16:33,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 09:16:33,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 09:16:33,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 09:16:33,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 09:16:33,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 09:16:33,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 09:16:33,063 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 09:16:33,063 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 09:16:33,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 09:16:33,063 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 09:16:33,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 09:16:33,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 09:16:33,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 09:16:33,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 09:16:33,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:16:33,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 09:16:33,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 09:16:33,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 09:16:33,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 09:16:33,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 09:16:33,065 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 09:16:33,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 09:16:33,066 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 09:16:33,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 09:16:33,066 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 09:16:33,066 INFO L138 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb3c623242420f3b3352ce2377df781fcc1efd56f82dd0011f9620e127821b3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 09:16:33,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 09:16:33,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 09:16:33,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 09:16:33,405 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 09:16:33,406 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 09:16:33,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/queue_longest.i [2023-08-29 09:16:34,665 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 09:16:34,954 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 09:16:34,959 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i [2023-08-29 09:16:34,987 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/784a3d6ee/9a1d40e07897455e9192b0fd0f601750/FLAGec0a97983 [2023-08-29 09:16:35,004 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/784a3d6ee/9a1d40e07897455e9192b0fd0f601750 [2023-08-29 09:16:35,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 09:16:35,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 09:16:35,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 09:16:35,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 09:16:35,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 09:16:35,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192de5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35, skipping insertion in model container [2023-08-29 09:16:35,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,017 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 09:16:35,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 09:16:35,501 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2023-08-29 09:16:35,506 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2023-08-29 09:16:35,510 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2023-08-29 09:16:35,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:16:35,532 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 09:16:35,589 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43296,43309] [2023-08-29 09:16:35,592 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43503,43516] [2023-08-29 09:16:35,597 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/queue_longest.i[43783,43796] [2023-08-29 09:16:35,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 09:16:35,664 INFO L208 MainTranslator]: Completed translation [2023-08-29 09:16:35,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35 WrapperNode [2023-08-29 09:16:35,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 09:16:35,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 09:16:35,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 09:16:35,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 09:16:35,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,709 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,764 INFO L138 Inliner]: procedures = 274, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 483 [2023-08-29 09:16:35,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 09:16:35,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 09:16:35,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 09:16:35,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 09:16:35,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,858 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 09:16:35,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 09:16:35,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 09:16:35,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 09:16:35,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (1/1) ... [2023-08-29 09:16:35,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 09:16:35,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 09:16:35,912 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 09:16:35,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 09:16:35,950 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-29 09:16:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-29 09:16:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-29 09:16:35,951 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-29 09:16:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 09:16:35,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 09:16:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 09:16:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 09:16:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 09:16:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 09:16:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 09:16:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 09:16:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 09:16:35,954 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 09:16:36,096 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 09:16:36,098 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 09:16:36,976 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 09:16:36,991 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 09:16:36,992 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-29 09:16:36,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:16:36 BoogieIcfgContainer [2023-08-29 09:16:36,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 09:16:36,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 09:16:36,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 09:16:37,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 09:16:37,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:16:35" (1/3) ... [2023-08-29 09:16:37,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad9b9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:16:37, skipping insertion in model container [2023-08-29 09:16:37,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:16:35" (2/3) ... [2023-08-29 09:16:37,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad9b9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:16:37, skipping insertion in model container [2023-08-29 09:16:37,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:16:36" (3/3) ... [2023-08-29 09:16:37,003 INFO L112 eAbstractionObserver]: Analyzing ICFG queue_longest.i [2023-08-29 09:16:37,010 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 09:16:37,020 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 09:16:37,021 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-08-29 09:16:37,021 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 09:16:37,205 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 09:16:37,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 539 transitions, 1094 flow [2023-08-29 09:16:37,474 INFO L130 PetriNetUnfolder]: 15/537 cut-off events. [2023-08-29 09:16:37,475 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 09:16:37,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 537 events. 15/537 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 780 event pairs, 0 based on Foata normal form. 0/478 useless extension candidates. Maximal degree in co-relation 415. Up to 2 conditions per place. [2023-08-29 09:16:37,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 531 places, 539 transitions, 1094 flow [2023-08-29 09:16:37,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 520 places, 528 transitions, 1065 flow [2023-08-29 09:16:37,498 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 09:16:37,506 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 520 places, 528 transitions, 1065 flow [2023-08-29 09:16:37,508 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 520 places, 528 transitions, 1065 flow [2023-08-29 09:16:37,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 520 places, 528 transitions, 1065 flow [2023-08-29 09:16:37,627 INFO L130 PetriNetUnfolder]: 15/528 cut-off events. [2023-08-29 09:16:37,627 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 09:16:37,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 528 events. 15/528 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 745 event pairs, 0 based on Foata normal form. 0/469 useless extension candidates. Maximal degree in co-relation 415. Up to 2 conditions per place. [2023-08-29 09:16:37,679 INFO L119 LiptonReduction]: Number of co-enabled transitions 81540 [2023-08-29 09:17:02,323 WARN L222 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 120 DAG size of output: 115 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 09:17:12,720 WARN L222 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 130 DAG size of output: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 09:17:42,328 WARN L222 SmtUtils]: Spent 20.48s on a formula simplification. DAG size of input: 234 DAG size of output: 217 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 09:17:49,077 WARN L222 SmtUtils]: Spent 6.75s on a formula simplification that was a NOOP. DAG size: 206 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 09:18:25,848 WARN L222 SmtUtils]: Spent 36.77s on a formula simplification. DAG size of input: 241 DAG size of output: 224 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 09:18:37,495 WARN L222 SmtUtils]: Spent 11.64s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 09:18:37,570 INFO L134 LiptonReduction]: Checked pairs total: 682961 [2023-08-29 09:18:37,570 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-08-29 09:18:37,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 09:18:37,597 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@2287dd1e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 09:18:37,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 81 error locations. [2023-08-29 09:18:37,598 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 09:18:37,599 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 09:18:37,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:18:37,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 09:18:37,600 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-29 09:18:37,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:18:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1884, now seen corresponding path program 1 times [2023-08-29 09:18:37,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:18:37,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035275668] [2023-08-29 09:18:37,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:18:37,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:18:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:18:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:18:37,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:18:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035275668] [2023-08-29 09:18:37,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035275668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:18:37,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:18:37,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 09:18:37,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80127247] [2023-08-29 09:18:37,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:18:37,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 09:18:37,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:18:37,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 09:18:37,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 09:18:37,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 526 out of 858 [2023-08-29 09:18:37,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 275 transitions, 559 flow. Second operand has 2 states, 2 states have (on average 526.5) internal successors, (1053), 2 states have internal predecessors, (1053), 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) [2023-08-29 09:18:37,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:18:37,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 526 of 858 [2023-08-29 09:18:37,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:18:39,863 INFO L130 PetriNetUnfolder]: 4142/12585 cut-off events. [2023-08-29 09:18:39,864 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-08-29 09:18:39,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19425 conditions, 12585 events. 4142/12585 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 109026 event pairs, 3642 based on Foata normal form. 128/11760 useless extension candidates. Maximal degree in co-relation 19002. Up to 6718 conditions per place. [2023-08-29 09:18:39,950 INFO L137 encePairwiseOnDemand]: 848/858 looper letters, 84 selfloop transitions, 0 changer transitions 0/264 dead transitions. [2023-08-29 09:18:39,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 264 transitions, 705 flow [2023-08-29 09:18:39,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 09:18:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 09:18:39,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1146 transitions. [2023-08-29 09:18:39,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678321678321678 [2023-08-29 09:18:39,992 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1146 transitions. [2023-08-29 09:18:39,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1146 transitions. [2023-08-29 09:18:39,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:18:39,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1146 transitions. [2023-08-29 09:18:40,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 573.0) internal successors, (1146), 2 states have internal predecessors, (1146), 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) [2023-08-29 09:18:40,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 858.0) internal successors, (2574), 3 states have internal predecessors, (2574), 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) [2023-08-29 09:18:40,066 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 858.0) internal successors, (2574), 3 states have internal predecessors, (2574), 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) [2023-08-29 09:18:40,069 INFO L175 Difference]: Start difference. First operand has 272 places, 275 transitions, 559 flow. Second operand 2 states and 1146 transitions. [2023-08-29 09:18:40,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 264 transitions, 705 flow [2023-08-29 09:18:40,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 264 transitions, 700 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 09:18:40,088 INFO L231 Difference]: Finished difference. Result has 262 places, 264 transitions, 532 flow [2023-08-29 09:18:40,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=858, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=532, PETRI_PLACES=262, PETRI_TRANSITIONS=264} [2023-08-29 09:18:40,094 INFO L281 CegarLoopForPetriNet]: 272 programPoint places, -10 predicate places. [2023-08-29 09:18:40,094 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 264 transitions, 532 flow [2023-08-29 09:18:40,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 526.5) internal successors, (1053), 2 states have internal predecessors, (1053), 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) [2023-08-29 09:18:40,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:18:40,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:18:40,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 09:18:40,097 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-29 09:18:40,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:18:40,108 INFO L85 PathProgramCache]: Analyzing trace with hash -103841326, now seen corresponding path program 1 times [2023-08-29 09:18:40,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:18:40,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928394981] [2023-08-29 09:18:40,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:18:40,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:18:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:18:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:18:40,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:18:40,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928394981] [2023-08-29 09:18:40,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928394981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:18:40,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:18:40,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:18:40,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980663835] [2023-08-29 09:18:40,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:18:40,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:18:40,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:18:40,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:18:40,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:18:40,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 520 out of 858 [2023-08-29 09:18:40,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 264 transitions, 532 flow. Second operand has 3 states, 3 states have (on average 522.6666666666666) internal successors, (1568), 3 states have internal predecessors, (1568), 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) [2023-08-29 09:18:40,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:18:40,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 520 of 858 [2023-08-29 09:18:40,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:18:43,133 INFO L130 PetriNetUnfolder]: 6999/19846 cut-off events. [2023-08-29 09:18:43,133 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-08-29 09:18:43,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31284 conditions, 19846 events. 6999/19846 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 174567 event pairs, 1613 based on Foata normal form. 0/18303 useless extension candidates. Maximal degree in co-relation 31281. Up to 6192 conditions per place. [2023-08-29 09:18:43,266 INFO L137 encePairwiseOnDemand]: 853/858 looper letters, 163 selfloop transitions, 4 changer transitions 0/343 dead transitions. [2023-08-29 09:18:43,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 343 transitions, 1025 flow [2023-08-29 09:18:43,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 09:18:43,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 09:18:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1728 transitions. [2023-08-29 09:18:43,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6713286713286714 [2023-08-29 09:18:43,271 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1728 transitions. [2023-08-29 09:18:43,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1728 transitions. [2023-08-29 09:18:43,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:18:43,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1728 transitions. [2023-08-29 09:18:43,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 576.0) internal successors, (1728), 3 states have internal predecessors, (1728), 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) [2023-08-29 09:18:43,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 858.0) internal successors, (3432), 4 states have internal predecessors, (3432), 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) [2023-08-29 09:18:43,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 858.0) internal successors, (3432), 4 states have internal predecessors, (3432), 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) [2023-08-29 09:18:43,378 INFO L175 Difference]: Start difference. First operand has 262 places, 264 transitions, 532 flow. Second operand 3 states and 1728 transitions. [2023-08-29 09:18:43,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 343 transitions, 1025 flow [2023-08-29 09:18:43,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 343 transitions, 1025 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:18:43,388 INFO L231 Difference]: Finished difference. Result has 266 places, 268 transitions, 566 flow [2023-08-29 09:18:43,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=858, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=566, PETRI_PLACES=266, PETRI_TRANSITIONS=268} [2023-08-29 09:18:43,390 INFO L281 CegarLoopForPetriNet]: 272 programPoint places, -6 predicate places. [2023-08-29 09:18:43,390 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 268 transitions, 566 flow [2023-08-29 09:18:43,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 522.6666666666666) internal successors, (1568), 3 states have internal predecessors, (1568), 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) [2023-08-29 09:18:43,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:18:43,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:18:43,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 09:18:43,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-29 09:18:43,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:18:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash 696512687, now seen corresponding path program 1 times [2023-08-29 09:18:43,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:18:43,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691091315] [2023-08-29 09:18:43,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:18:43,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:18:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:18:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:18:43,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:18:43,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691091315] [2023-08-29 09:18:43,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691091315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:18:43,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:18:43,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 09:18:43,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353698430] [2023-08-29 09:18:43,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:18:43,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 09:18:43,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:18:43,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 09:18:43,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 09:18:45,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 858 [2023-08-29 09:18:45,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 268 transitions, 566 flow. Second operand has 6 states, 6 states have (on average 427.5) internal successors, (2565), 6 states have internal predecessors, (2565), 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) [2023-08-29 09:18:45,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:18:45,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 858 [2023-08-29 09:18:45,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:18:50,288 INFO L130 PetriNetUnfolder]: 25403/51176 cut-off events. [2023-08-29 09:18:50,288 INFO L131 PetriNetUnfolder]: For 910/910 co-relation queries the response was YES. [2023-08-29 09:18:50,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94190 conditions, 51176 events. 25403/51176 cut-off events. For 910/910 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 407476 event pairs, 13934 based on Foata normal form. 0/47784 useless extension candidates. Maximal degree in co-relation 94185. Up to 30658 conditions per place. [2023-08-29 09:18:50,564 INFO L137 encePairwiseOnDemand]: 802/858 looper letters, 282 selfloop transitions, 86 changer transitions 0/482 dead transitions. [2023-08-29 09:18:50,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 482 transitions, 1762 flow [2023-08-29 09:18:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 09:18:50,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 09:18:50,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2925 transitions. [2023-08-29 09:18:50,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-08-29 09:18:50,572 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2925 transitions. [2023-08-29 09:18:50,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2925 transitions. [2023-08-29 09:18:50,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:18:50,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2925 transitions. [2023-08-29 09:18:50,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 487.5) internal successors, (2925), 6 states have internal predecessors, (2925), 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) [2023-08-29 09:18:50,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-29 09:18:50,591 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-29 09:18:50,591 INFO L175 Difference]: Start difference. First operand has 266 places, 268 transitions, 566 flow. Second operand 6 states and 2925 transitions. [2023-08-29 09:18:50,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 482 transitions, 1762 flow [2023-08-29 09:18:50,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 482 transitions, 1746 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 09:18:50,606 INFO L231 Difference]: Finished difference. Result has 274 places, 350 transitions, 1170 flow [2023-08-29 09:18:50,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=858, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1170, PETRI_PLACES=274, PETRI_TRANSITIONS=350} [2023-08-29 09:18:50,608 INFO L281 CegarLoopForPetriNet]: 272 programPoint places, 2 predicate places. [2023-08-29 09:18:50,608 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 350 transitions, 1170 flow [2023-08-29 09:18:50,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 427.5) internal successors, (2565), 6 states have internal predecessors, (2565), 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) [2023-08-29 09:18:50,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:18:50,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:18:50,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 09:18:50,610 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-29 09:18:50,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:18:50,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1976914453, now seen corresponding path program 1 times [2023-08-29 09:18:50,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:18:50,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914817263] [2023-08-29 09:18:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:18:50,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:18:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:18:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:18:50,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:18:50,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914817263] [2023-08-29 09:18:50,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914817263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:18:50,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:18:50,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 09:18:50,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609842947] [2023-08-29 09:18:50,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:18:50,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 09:18:50,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:18:50,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 09:18:50,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 09:18:51,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 858 [2023-08-29 09:18:51,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 350 transitions, 1170 flow. Second operand has 6 states, 6 states have (on average 454.6666666666667) internal successors, (2728), 6 states have internal predecessors, (2728), 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) [2023-08-29 09:18:51,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:18:51,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 858 [2023-08-29 09:18:51,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:19:19,383 INFO L130 PetriNetUnfolder]: 141595/261054 cut-off events. [2023-08-29 09:19:19,384 INFO L131 PetriNetUnfolder]: For 64798/68417 co-relation queries the response was YES. [2023-08-29 09:19:19,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561745 conditions, 261054 events. 141595/261054 cut-off events. For 64798/68417 co-relation queries the response was YES. Maximal size of possible extension queue 1596. Compared 2535521 event pairs, 43343 based on Foata normal form. 675/242650 useless extension candidates. Maximal degree in co-relation 561736. Up to 145490 conditions per place. [2023-08-29 09:19:20,907 INFO L137 encePairwiseOnDemand]: 800/858 looper letters, 485 selfloop transitions, 429 changer transitions 0/1072 dead transitions. [2023-08-29 09:19:20,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1072 transitions, 5587 flow [2023-08-29 09:19:20,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 09:19:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 09:19:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3333 transitions. [2023-08-29 09:19:20,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6474358974358975 [2023-08-29 09:19:20,925 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3333 transitions. [2023-08-29 09:19:20,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3333 transitions. [2023-08-29 09:19:20,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:19:20,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3333 transitions. [2023-08-29 09:19:20,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 555.5) internal successors, (3333), 6 states have internal predecessors, (3333), 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) [2023-08-29 09:19:20,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-29 09:19:20,944 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-29 09:19:20,944 INFO L175 Difference]: Start difference. First operand has 274 places, 350 transitions, 1170 flow. Second operand 6 states and 3333 transitions. [2023-08-29 09:19:20,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1072 transitions, 5587 flow [2023-08-29 09:19:21,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 1072 transitions, 5587 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:19:21,141 INFO L231 Difference]: Finished difference. Result has 284 places, 778 transitions, 4972 flow [2023-08-29 09:19:21,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=858, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4972, PETRI_PLACES=284, PETRI_TRANSITIONS=778} [2023-08-29 09:19:21,143 INFO L281 CegarLoopForPetriNet]: 272 programPoint places, 12 predicate places. [2023-08-29 09:19:21,144 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 778 transitions, 4972 flow [2023-08-29 09:19:21,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 454.6666666666667) internal successors, (2728), 6 states have internal predecessors, (2728), 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) [2023-08-29 09:19:21,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:19:21,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:19:21,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 09:19:21,147 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-29 09:19:21,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:19:21,148 INFO L85 PathProgramCache]: Analyzing trace with hash 212381141, now seen corresponding path program 1 times [2023-08-29 09:19:21,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:19:21,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615926016] [2023-08-29 09:19:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:19:21,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:19:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:19:21,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:19:21,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:19:21,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615926016] [2023-08-29 09:19:21,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615926016] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:19:21,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:19:21,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 09:19:21,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262607655] [2023-08-29 09:19:21,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:19:21,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 09:19:21,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:19:21,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 09:19:21,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 09:19:22,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 858 [2023-08-29 09:19:22,022 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 778 transitions, 4972 flow. Second operand has 6 states, 6 states have (on average 368.1666666666667) internal successors, (2209), 6 states have internal predecessors, (2209), 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) [2023-08-29 09:19:22,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:19:22,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 858 [2023-08-29 09:19:22,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 09:20:28,372 INFO L130 PetriNetUnfolder]: 300112/511577 cut-off events. [2023-08-29 09:20:28,372 INFO L131 PetriNetUnfolder]: For 415267/420779 co-relation queries the response was YES. [2023-08-29 09:20:29,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1435432 conditions, 511577 events. 300112/511577 cut-off events. For 415267/420779 co-relation queries the response was YES. Maximal size of possible extension queue 1867. Compared 4552154 event pairs, 169100 based on Foata normal form. 84/487341 useless extension candidates. Maximal degree in co-relation 1435418. Up to 444352 conditions per place. [2023-08-29 09:20:31,629 INFO L137 encePairwiseOnDemand]: 806/858 looper letters, 811 selfloop transitions, 242 changer transitions 0/1124 dead transitions. [2023-08-29 09:20:31,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1124 transitions, 8350 flow [2023-08-29 09:20:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 09:20:31,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 09:20:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2686 transitions. [2023-08-29 09:20:31,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217560217560218 [2023-08-29 09:20:31,636 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2686 transitions. [2023-08-29 09:20:31,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2686 transitions. [2023-08-29 09:20:31,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 09:20:31,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2686 transitions. [2023-08-29 09:20:31,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 447.6666666666667) internal successors, (2686), 6 states have internal predecessors, (2686), 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) [2023-08-29 09:20:31,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-29 09:20:31,649 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 858.0) internal successors, (6006), 7 states have internal predecessors, (6006), 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) [2023-08-29 09:20:31,650 INFO L175 Difference]: Start difference. First operand has 284 places, 778 transitions, 4972 flow. Second operand 6 states and 2686 transitions. [2023-08-29 09:20:31,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1124 transitions, 8350 flow [2023-08-29 09:22:14,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1124 transitions, 8350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 09:22:14,971 INFO L231 Difference]: Finished difference. Result has 293 places, 1000 transitions, 6846 flow [2023-08-29 09:22:14,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=858, PETRI_DIFFERENCE_MINUEND_FLOW=4972, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6846, PETRI_PLACES=293, PETRI_TRANSITIONS=1000} [2023-08-29 09:22:14,972 INFO L281 CegarLoopForPetriNet]: 272 programPoint places, 21 predicate places. [2023-08-29 09:22:14,972 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 1000 transitions, 6846 flow [2023-08-29 09:22:14,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 368.1666666666667) internal successors, (2209), 6 states have internal predecessors, (2209), 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) [2023-08-29 09:22:14,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 09:22:14,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 09:22:14,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 09:22:14,974 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 78 more)] === [2023-08-29 09:22:14,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 09:22:14,975 INFO L85 PathProgramCache]: Analyzing trace with hash 761149045, now seen corresponding path program 1 times [2023-08-29 09:22:14,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 09:22:14,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168917209] [2023-08-29 09:22:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 09:22:14,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 09:22:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 09:22:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 09:22:15,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 09:22:15,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168917209] [2023-08-29 09:22:15,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168917209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 09:22:15,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 09:22:15,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 09:22:15,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168315895] [2023-08-29 09:22:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 09:22:15,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 09:22:15,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 09:22:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 09:22:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 09:22:15,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 521 out of 858 [2023-08-29 09:22:15,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 1000 transitions, 6846 flow. Second operand has 3 states, 3 states have (on average 523.6666666666666) internal successors, (1571), 3 states have internal predecessors, (1571), 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) [2023-08-29 09:22:15,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 09:22:15,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 521 of 858 [2023-08-29 09:22:15,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand