./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/weaver/chl-node-subst.wvr.c -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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 21:31:53,837 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 21:31:53,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 21:31:53,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 21:31:53,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 21:31:53,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 21:31:53,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 21:31:53,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 21:31:53,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 21:31:53,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 21:31:53,884 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 21:31:53,886 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 21:31:53,886 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 21:31:53,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 21:31:53,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 21:31:53,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 21:31:53,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 21:31:53,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 21:31:53,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 21:31:53,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 21:31:53,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 21:31:53,904 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 21:31:53,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 21:31:53,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 21:31:53,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 21:31:53,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 21:31:53,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 21:31:53,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 21:31:53,912 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 21:31:53,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 21:31:53,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 21:31:53,918 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 21:31:53,919 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 21:31:53,920 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 21:31:53,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 21:31:53,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 21:31:53,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 21:31:53,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 21:31:53,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 21:31:53,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 21:31:53,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 21:31:53,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 21:31:53,950 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 21:31:53,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 21:31:53,951 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 21:31:53,951 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 21:31:53,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 21:31:53,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 21:31:53,952 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 21:31:53,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 21:31:53,953 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 21:31:53,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 21:31:53,953 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 21:31:53,954 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 21:31:53,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 21:31:53,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 21:31:53,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 21:31:53,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 21:31:53,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 21:31:53,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 21:31:53,955 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 21:31:53,955 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 21:31:53,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 21:31:53,955 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 21:31:53,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 21:31:53,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 21:31:53,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 21:31:53,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 21:31:53,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:31:53,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 21:31:53,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 21:31:53,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 21:31:53,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 21:31:53,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 21:31:53,957 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 21:31:53,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 21:31:53,958 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 21:31:53,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 21:31:53,958 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 21:31:53,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 21:31:54,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 21:31:54,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 21:31:54,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 21:31:54,205 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 21:31:54,205 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 21:31:54,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-31 21:31:55,201 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 21:31:55,350 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 21:31:55,353 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-31 21:31:55,357 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040303d4c/e49b0a8918cc44c0a97c44ba1d1a607b/FLAG5674140d7 [2023-08-31 21:31:55,366 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/040303d4c/e49b0a8918cc44c0a97c44ba1d1a607b [2023-08-31 21:31:55,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 21:31:55,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 21:31:55,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 21:31:55,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 21:31:55,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 21:31:55,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347b7110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55, skipping insertion in model container [2023-08-31 21:31:55,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,381 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 21:31:55,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 21:31:55,525 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-08-31 21:31:55,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:31:55,537 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 21:31:55,564 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c[3996,4009] [2023-08-31 21:31:55,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 21:31:55,579 INFO L208 MainTranslator]: Completed translation [2023-08-31 21:31:55,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55 WrapperNode [2023-08-31 21:31:55,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 21:31:55,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 21:31:55,581 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 21:31:55,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 21:31:55,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,664 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 817 [2023-08-31 21:31:55,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 21:31:55,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 21:31:55,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 21:31:55,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 21:31:55,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,685 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,685 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 21:31:55,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 21:31:55,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 21:31:55,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 21:31:55,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (1/1) ... [2023-08-31 21:31:55,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 21:31:55,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:31:55,744 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) [2023-08-31 21:31:55,768 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 [2023-08-31 21:31:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 21:31:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 21:31:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 21:31:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 21:31:55,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 21:31:55,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 21:31:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 21:31:55,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 21:31:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 21:31:55,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 21:31:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 21:31:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 21:31:55,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 21:31:55,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 21:31:55,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 21:31:55,776 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 21:31:55,914 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 21:31:55,915 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 21:31:56,635 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 21:31:56,648 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 21:31:56,649 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 21:31:56,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:31:56 BoogieIcfgContainer [2023-08-31 21:31:56,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 21:31:56,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 21:31:56,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 21:31:56,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 21:31:56,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 09:31:55" (1/3) ... [2023-08-31 21:31:56,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40892aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:31:56, skipping insertion in model container [2023-08-31 21:31:56,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 09:31:55" (2/3) ... [2023-08-31 21:31:56,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40892aee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 09:31:56, skipping insertion in model container [2023-08-31 21:31:56,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 09:31:56" (3/3) ... [2023-08-31 21:31:56,657 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-08-31 21:31:56,662 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 21:31:56,667 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 21:31:56,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 119 error locations. [2023-08-31 21:31:56,668 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 21:31:56,804 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 21:31:56,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 973 places, 1011 transitions, 2046 flow [2023-08-31 21:31:57,135 INFO L130 PetriNetUnfolder]: 48/1008 cut-off events. [2023-08-31 21:31:57,135 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 21:31:57,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 1008 events. 48/1008 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2165 event pairs, 0 based on Foata normal form. 0/841 useless extension candidates. Maximal degree in co-relation 795. Up to 2 conditions per place. [2023-08-31 21:31:57,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 973 places, 1011 transitions, 2046 flow [2023-08-31 21:31:57,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 950 places, 985 transitions, 1988 flow [2023-08-31 21:31:57,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:31:57,189 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 950 places, 985 transitions, 1988 flow [2023-08-31 21:31:57,192 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 950 places, 985 transitions, 1988 flow [2023-08-31 21:31:57,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 950 places, 985 transitions, 1988 flow [2023-08-31 21:31:57,356 INFO L130 PetriNetUnfolder]: 45/985 cut-off events. [2023-08-31 21:31:57,356 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 21:31:57,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998 conditions, 985 events. 45/985 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2122 event pairs, 0 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 795. Up to 2 conditions per place. [2023-08-31 21:31:57,401 INFO L119 LiptonReduction]: Number of co-enabled transitions 148920 [2023-08-31 21:32:18,216 INFO L134 LiptonReduction]: Checked pairs total: 1150192 [2023-08-31 21:32:18,217 INFO L136 LiptonReduction]: Total number of compositions: 986 [2023-08-31 21:32:18,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 21:32:18,233 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;@3f8d9acf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:32:18,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 197 error locations. [2023-08-31 21:32:18,234 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-31 21:32:18,235 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 21:32:18,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:18,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 21:32:18,236 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:18,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:18,239 INFO L85 PathProgramCache]: Analyzing trace with hash 3623, now seen corresponding path program 1 times [2023-08-31 21:32:18,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:18,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096228731] [2023-08-31 21:32:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:18,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:18,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 21:32:18,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:18,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096228731] [2023-08-31 21:32:18,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096228731] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:18,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:32:18,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 21:32:18,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522369762] [2023-08-31 21:32:18,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:18,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 21:32:18,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:18,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 21:32:18,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 21:32:18,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 975 out of 1997 [2023-08-31 21:32:18,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 320 transitions, 658 flow. Second operand has 2 states, 2 states have (on average 975.5) internal successors, (1951), 2 states have internal predecessors, (1951), 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) [2023-08-31 21:32:18,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:18,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 975 of 1997 [2023-08-31 21:32:18,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:32:21,519 INFO L130 PetriNetUnfolder]: 10619/35446 cut-off events. [2023-08-31 21:32:21,519 INFO L131 PetriNetUnfolder]: For 444/444 co-relation queries the response was YES. [2023-08-31 21:32:21,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50482 conditions, 35446 events. 10619/35446 cut-off events. For 444/444 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 448545 event pairs, 8657 based on Foata normal form. 1862/30470 useless extension candidates. Maximal degree in co-relation 47034. Up to 14622 conditions per place. [2023-08-31 21:32:21,763 INFO L137 encePairwiseOnDemand]: 1937/1997 looper letters, 63 selfloop transitions, 0 changer transitions 1/260 dead transitions. [2023-08-31 21:32:21,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 260 transitions, 666 flow [2023-08-31 21:32:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 21:32:21,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 21:32:21,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 2074 transitions. [2023-08-31 21:32:21,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192789183775663 [2023-08-31 21:32:21,854 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 2074 transitions. [2023-08-31 21:32:21,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 2074 transitions. [2023-08-31 21:32:21,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:32:21,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 2074 transitions. [2023-08-31 21:32:21,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 1037.0) internal successors, (2074), 2 states have internal predecessors, (2074), 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) [2023-08-31 21:32:21,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1997.0) internal successors, (5991), 3 states have internal predecessors, (5991), 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) [2023-08-31 21:32:21,880 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1997.0) internal successors, (5991), 3 states have internal predecessors, (5991), 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) [2023-08-31 21:32:21,882 INFO L175 Difference]: Start difference. First operand has 318 places, 320 transitions, 658 flow. Second operand 2 states and 2074 transitions. [2023-08-31 21:32:21,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 260 transitions, 666 flow [2023-08-31 21:32:21,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 260 transitions, 654 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 21:32:21,918 INFO L231 Difference]: Finished difference. Result has 253 places, 259 transitions, 523 flow [2023-08-31 21:32:21,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=523, PETRI_PLACES=253, PETRI_TRANSITIONS=259} [2023-08-31 21:32:21,922 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -65 predicate places. [2023-08-31 21:32:21,923 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 259 transitions, 523 flow [2023-08-31 21:32:21,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 975.5) internal successors, (1951), 2 states have internal predecessors, (1951), 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) [2023-08-31 21:32:21,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:21,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:32:21,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 21:32:21,927 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:21,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:21,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1353092378, now seen corresponding path program 1 times [2023-08-31 21:32:21,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:21,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119811286] [2023-08-31 21:32:21,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:21,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 21:32:22,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:22,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119811286] [2023-08-31 21:32:22,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119811286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:22,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:32:22,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:32:22,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692384479] [2023-08-31 21:32:22,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:22,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:32:22,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:22,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:32:22,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:32:22,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 962 out of 1997 [2023-08-31 21:32:22,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 259 transitions, 523 flow. Second operand has 3 states, 3 states have (on average 965.3333333333334) internal successors, (2896), 3 states have internal predecessors, (2896), 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) [2023-08-31 21:32:22,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:22,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 962 of 1997 [2023-08-31 21:32:22,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:32:26,298 INFO L130 PetriNetUnfolder]: 17330/58316 cut-off events. [2023-08-31 21:32:26,298 INFO L131 PetriNetUnfolder]: For 85/85 co-relation queries the response was YES. [2023-08-31 21:32:26,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82425 conditions, 58316 events. 17330/58316 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 773228 event pairs, 5176 based on Foata normal form. 0/48516 useless extension candidates. Maximal degree in co-relation 82422. Up to 23852 conditions per place. [2023-08-31 21:32:26,581 INFO L137 encePairwiseOnDemand]: 1991/1997 looper letters, 92 selfloop transitions, 2 changer transitions 0/280 dead transitions. [2023-08-31 21:32:26,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 280 transitions, 755 flow [2023-08-31 21:32:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:32:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:32:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2984 transitions. [2023-08-31 21:32:26,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49808045401435486 [2023-08-31 21:32:26,587 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2984 transitions. [2023-08-31 21:32:26,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2984 transitions. [2023-08-31 21:32:26,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:32:26,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2984 transitions. [2023-08-31 21:32:26,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 994.6666666666666) internal successors, (2984), 3 states have internal predecessors, (2984), 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) [2023-08-31 21:32:26,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:32:26,603 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:32:26,603 INFO L175 Difference]: Start difference. First operand has 253 places, 259 transitions, 523 flow. Second operand 3 states and 2984 transitions. [2023-08-31 21:32:26,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 280 transitions, 755 flow [2023-08-31 21:32:26,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 280 transitions, 755 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:32:26,607 INFO L231 Difference]: Finished difference. Result has 251 places, 257 transitions, 529 flow [2023-08-31 21:32:26,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=529, PETRI_PLACES=251, PETRI_TRANSITIONS=257} [2023-08-31 21:32:26,608 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -67 predicate places. [2023-08-31 21:32:26,608 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 257 transitions, 529 flow [2023-08-31 21:32:26,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 965.3333333333334) internal successors, (2896), 3 states have internal predecessors, (2896), 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) [2023-08-31 21:32:26,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:26,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:32:26,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 21:32:26,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:26,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:26,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1053387688, now seen corresponding path program 1 times [2023-08-31 21:32:26,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:26,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245650667] [2023-08-31 21:32:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:26,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:26,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 21:32:26,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:26,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245650667] [2023-08-31 21:32:26,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245650667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:26,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:32:26,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:32:26,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388792524] [2023-08-31 21:32:26,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:26,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:32:26,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:26,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:32:26,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:32:26,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 944 out of 1997 [2023-08-31 21:32:26,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 257 transitions, 529 flow. Second operand has 3 states, 3 states have (on average 947.3333333333334) internal successors, (2842), 3 states have internal predecessors, (2842), 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) [2023-08-31 21:32:26,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:26,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 944 of 1997 [2023-08-31 21:32:26,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:32:32,007 INFO L130 PetriNetUnfolder]: 26577/78278 cut-off events. [2023-08-31 21:32:32,007 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-08-31 21:32:32,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115526 conditions, 78278 events. 26577/78278 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1600. Compared 1024601 event pairs, 22970 based on Foata normal form. 0/66303 useless extension candidates. Maximal degree in co-relation 115522. Up to 36949 conditions per place. [2023-08-31 21:32:32,423 INFO L137 encePairwiseOnDemand]: 1990/1997 looper letters, 74 selfloop transitions, 1 changer transitions 0/251 dead transitions. [2023-08-31 21:32:32,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 251 transitions, 667 flow [2023-08-31 21:32:32,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:32:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:32:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2913 transitions. [2023-08-31 21:32:32,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.486229344016024 [2023-08-31 21:32:32,428 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2913 transitions. [2023-08-31 21:32:32,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2913 transitions. [2023-08-31 21:32:32,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:32:32,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2913 transitions. [2023-08-31 21:32:32,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 971.0) internal successors, (2913), 3 states have internal predecessors, (2913), 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) [2023-08-31 21:32:32,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:32:32,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:32:32,444 INFO L175 Difference]: Start difference. First operand has 251 places, 257 transitions, 529 flow. Second operand 3 states and 2913 transitions. [2023-08-31 21:32:32,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 251 transitions, 667 flow [2023-08-31 21:32:32,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 251 transitions, 667 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:32:32,447 INFO L231 Difference]: Finished difference. Result has 247 places, 251 transitions, 519 flow [2023-08-31 21:32:32,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=519, PETRI_PLACES=247, PETRI_TRANSITIONS=251} [2023-08-31 21:32:32,448 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -71 predicate places. [2023-08-31 21:32:32,448 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 251 transitions, 519 flow [2023-08-31 21:32:32,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 947.3333333333334) internal successors, (2842), 3 states have internal predecessors, (2842), 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) [2023-08-31 21:32:32,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:32,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:32:32,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 21:32:32,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:32,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:32,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1820064494, now seen corresponding path program 1 times [2023-08-31 21:32:32,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:32,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655491863] [2023-08-31 21:32:32,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:32,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:32,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:32,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 21:32:32,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:32,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655491863] [2023-08-31 21:32:32,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655491863] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:32,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:32:32,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:32:32,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561923996] [2023-08-31 21:32:32,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:32,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:32:32,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:32,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:32:32,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:32:32,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 962 out of 1997 [2023-08-31 21:32:32,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 251 transitions, 519 flow. Second operand has 3 states, 3 states have (on average 966.6666666666666) internal successors, (2900), 3 states have internal predecessors, (2900), 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) [2023-08-31 21:32:32,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:32,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 962 of 1997 [2023-08-31 21:32:32,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:32:35,722 INFO L130 PetriNetUnfolder]: 16344/43718 cut-off events. [2023-08-31 21:32:35,722 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-31 21:32:35,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66538 conditions, 43718 events. 16344/43718 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 1071. Compared 514281 event pairs, 4478 based on Foata normal form. 0/37713 useless extension candidates. Maximal degree in co-relation 66533. Up to 22375 conditions per place. [2023-08-31 21:32:35,949 INFO L137 encePairwiseOnDemand]: 1991/1997 looper letters, 86 selfloop transitions, 2 changer transitions 0/266 dead transitions. [2023-08-31 21:32:35,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 266 transitions, 727 flow [2023-08-31 21:32:35,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:32:35,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:32:35,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2978 transitions. [2023-08-31 21:32:35,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4970789517609748 [2023-08-31 21:32:35,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2978 transitions. [2023-08-31 21:32:35,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2978 transitions. [2023-08-31 21:32:35,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:32:35,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2978 transitions. [2023-08-31 21:32:35,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 992.6666666666666) internal successors, (2978), 3 states have internal predecessors, (2978), 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) [2023-08-31 21:32:35,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:32:35,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:32:35,966 INFO L175 Difference]: Start difference. First operand has 247 places, 251 transitions, 519 flow. Second operand 3 states and 2978 transitions. [2023-08-31 21:32:35,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 266 transitions, 727 flow [2023-08-31 21:32:35,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 266 transitions, 726 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 21:32:35,969 INFO L231 Difference]: Finished difference. Result has 245 places, 249 transitions, 524 flow [2023-08-31 21:32:35,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=245, PETRI_TRANSITIONS=249} [2023-08-31 21:32:35,970 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -73 predicate places. [2023-08-31 21:32:35,970 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 249 transitions, 524 flow [2023-08-31 21:32:35,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 966.6666666666666) internal successors, (2900), 3 states have internal predecessors, (2900), 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) [2023-08-31 21:32:35,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:35,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:32:35,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 21:32:35,972 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread3Err1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:35,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1030370864, now seen corresponding path program 1 times [2023-08-31 21:32:35,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:35,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933437371] [2023-08-31 21:32:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:35,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:36,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 21:32:36,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:36,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933437371] [2023-08-31 21:32:36,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933437371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:36,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:32:36,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:32:36,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321426709] [2023-08-31 21:32:36,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:36,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:32:36,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:36,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:32:36,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:32:36,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 944 out of 1997 [2023-08-31 21:32:36,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 249 transitions, 524 flow. Second operand has 3 states, 3 states have (on average 948.6666666666666) internal successors, (2846), 3 states have internal predecessors, (2846), 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) [2023-08-31 21:32:36,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:36,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 944 of 1997 [2023-08-31 21:32:36,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:32:41,044 INFO L130 PetriNetUnfolder]: 22024/65988 cut-off events. [2023-08-31 21:32:41,044 INFO L131 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2023-08-31 21:32:41,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97343 conditions, 65988 events. 22024/65988 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 1514. Compared 868918 event pairs, 18617 based on Foata normal form. 0/57159 useless extension candidates. Maximal degree in co-relation 97338. Up to 30618 conditions per place. [2023-08-31 21:32:41,420 INFO L137 encePairwiseOnDemand]: 1990/1997 looper letters, 74 selfloop transitions, 1 changer transitions 0/243 dead transitions. [2023-08-31 21:32:41,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 662 flow [2023-08-31 21:32:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:32:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:32:41,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2912 transitions. [2023-08-31 21:32:41,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48606242697379404 [2023-08-31 21:32:41,426 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2912 transitions. [2023-08-31 21:32:41,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2912 transitions. [2023-08-31 21:32:41,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:32:41,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2912 transitions. [2023-08-31 21:32:41,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 970.6666666666666) internal successors, (2912), 3 states have internal predecessors, (2912), 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) [2023-08-31 21:32:41,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:32:41,436 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:32:41,436 INFO L175 Difference]: Start difference. First operand has 245 places, 249 transitions, 524 flow. Second operand 3 states and 2912 transitions. [2023-08-31 21:32:41,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 662 flow [2023-08-31 21:32:41,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 243 transitions, 662 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:32:41,440 INFO L231 Difference]: Finished difference. Result has 241 places, 243 transitions, 514 flow [2023-08-31 21:32:41,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=514, PETRI_PLACES=241, PETRI_TRANSITIONS=243} [2023-08-31 21:32:41,441 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -77 predicate places. [2023-08-31 21:32:41,441 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 243 transitions, 514 flow [2023-08-31 21:32:41,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 948.6666666666666) internal successors, (2846), 3 states have internal predecessors, (2846), 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) [2023-08-31 21:32:41,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:41,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:32:41,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 21:32:41,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:41,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:41,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1625690359, now seen corresponding path program 1 times [2023-08-31 21:32:41,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:41,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431243343] [2023-08-31 21:32:41,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:41,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:41,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 21:32:41,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:41,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431243343] [2023-08-31 21:32:41,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431243343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:41,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:32:41,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:32:41,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034769134] [2023-08-31 21:32:41,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:41,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:32:41,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:41,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:32:41,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:32:41,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 961 out of 1997 [2023-08-31 21:32:41,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 243 transitions, 514 flow. Second operand has 3 states, 3 states have (on average 965.3333333333334) internal successors, (2896), 3 states have internal predecessors, (2896), 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) [2023-08-31 21:32:41,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:41,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 961 of 1997 [2023-08-31 21:32:41,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:32:44,448 INFO L130 PetriNetUnfolder]: 11509/37588 cut-off events. [2023-08-31 21:32:44,448 INFO L131 PetriNetUnfolder]: For 460/460 co-relation queries the response was YES. [2023-08-31 21:32:44,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54173 conditions, 37588 events. 11509/37588 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 474063 event pairs, 9358 based on Foata normal form. 0/31878 useless extension candidates. Maximal degree in co-relation 54167. Up to 16012 conditions per place. [2023-08-31 21:32:44,632 INFO L137 encePairwiseOnDemand]: 1994/1997 looper letters, 63 selfloop transitions, 2 changer transitions 0/244 dead transitions. [2023-08-31 21:32:44,632 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 244 transitions, 646 flow [2023-08-31 21:32:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:32:44,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:32:44,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2948 transitions. [2023-08-31 21:32:44,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4920714404940744 [2023-08-31 21:32:44,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2948 transitions. [2023-08-31 21:32:44,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2948 transitions. [2023-08-31 21:32:44,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:32:44,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2948 transitions. [2023-08-31 21:32:44,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 982.6666666666666) internal successors, (2948), 3 states have internal predecessors, (2948), 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) [2023-08-31 21:32:44,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:32:44,647 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:32:44,647 INFO L175 Difference]: Start difference. First operand has 241 places, 243 transitions, 514 flow. Second operand 3 states and 2948 transitions. [2023-08-31 21:32:44,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 244 transitions, 646 flow [2023-08-31 21:32:44,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 244 transitions, 645 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 21:32:44,651 INFO L231 Difference]: Finished difference. Result has 243 places, 244 transitions, 525 flow [2023-08-31 21:32:44,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=525, PETRI_PLACES=243, PETRI_TRANSITIONS=244} [2023-08-31 21:32:44,652 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -75 predicate places. [2023-08-31 21:32:44,652 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 244 transitions, 525 flow [2023-08-31 21:32:44,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 965.3333333333334) internal successors, (2896), 3 states have internal predecessors, (2896), 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) [2023-08-31 21:32:44,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:44,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:32:44,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 21:32:44,653 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:44,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:44,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1409368287, now seen corresponding path program 1 times [2023-08-31 21:32:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:44,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805268028] [2023-08-31 21:32:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:44,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 21:32:44,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:44,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805268028] [2023-08-31 21:32:44,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805268028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:44,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:32:44,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 21:32:44,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101884350] [2023-08-31 21:32:44,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:44,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 21:32:44,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:44,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 21:32:44,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 21:32:44,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 961 out of 1997 [2023-08-31 21:32:44,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 244 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 964.5) internal successors, (3858), 4 states have internal predecessors, (3858), 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) [2023-08-31 21:32:44,962 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:44,962 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 961 of 1997 [2023-08-31 21:32:44,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:32:47,695 INFO L130 PetriNetUnfolder]: 11509/37589 cut-off events. [2023-08-31 21:32:47,696 INFO L131 PetriNetUnfolder]: For 460/460 co-relation queries the response was YES. [2023-08-31 21:32:47,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54181 conditions, 37589 events. 11509/37589 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 474308 event pairs, 9358 based on Foata normal form. 0/31879 useless extension candidates. Maximal degree in co-relation 54174. Up to 16012 conditions per place. [2023-08-31 21:32:47,886 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 63 selfloop transitions, 3 changer transitions 0/245 dead transitions. [2023-08-31 21:32:47,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 245 transitions, 659 flow [2023-08-31 21:32:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 21:32:47,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 21:32:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3909 transitions. [2023-08-31 21:32:47,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48935903855783675 [2023-08-31 21:32:47,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3909 transitions. [2023-08-31 21:32:47,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3909 transitions. [2023-08-31 21:32:47,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:32:47,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3909 transitions. [2023-08-31 21:32:47,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 977.25) internal successors, (3909), 4 states have internal predecessors, (3909), 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) [2023-08-31 21:32:47,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1997.0) internal successors, (9985), 5 states have internal predecessors, (9985), 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) [2023-08-31 21:32:47,904 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1997.0) internal successors, (9985), 5 states have internal predecessors, (9985), 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) [2023-08-31 21:32:47,904 INFO L175 Difference]: Start difference. First operand has 243 places, 244 transitions, 525 flow. Second operand 4 states and 3909 transitions. [2023-08-31 21:32:47,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 245 transitions, 659 flow [2023-08-31 21:32:47,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 245 transitions, 655 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 21:32:47,908 INFO L231 Difference]: Finished difference. Result has 246 places, 245 transitions, 535 flow [2023-08-31 21:32:47,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=535, PETRI_PLACES=246, PETRI_TRANSITIONS=245} [2023-08-31 21:32:47,909 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -72 predicate places. [2023-08-31 21:32:47,909 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 245 transitions, 535 flow [2023-08-31 21:32:47,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 964.5) internal successors, (3858), 4 states have internal predecessors, (3858), 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) [2023-08-31 21:32:47,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:47,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:32:47,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 21:32:47,910 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:47,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:47,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1181819343, now seen corresponding path program 1 times [2023-08-31 21:32:47,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:47,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23422825] [2023-08-31 21:32:47,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:47,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:47,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:32:47,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:47,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23422825] [2023-08-31 21:32:47,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23422825] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:47,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:32:47,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 21:32:47,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323482662] [2023-08-31 21:32:47,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:47,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 21:32:47,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:47,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 21:32:47,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 21:32:48,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 961 out of 1997 [2023-08-31 21:32:48,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 245 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 964.75) internal successors, (3859), 4 states have internal predecessors, (3859), 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) [2023-08-31 21:32:48,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:48,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 961 of 1997 [2023-08-31 21:32:48,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:32:51,098 INFO L130 PetriNetUnfolder]: 11509/37590 cut-off events. [2023-08-31 21:32:51,098 INFO L131 PetriNetUnfolder]: For 463/463 co-relation queries the response was YES. [2023-08-31 21:32:51,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54188 conditions, 37590 events. 11509/37590 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 474143 event pairs, 9358 based on Foata normal form. 0/31881 useless extension candidates. Maximal degree in co-relation 54180. Up to 16012 conditions per place. [2023-08-31 21:32:51,308 INFO L137 encePairwiseOnDemand]: 1992/1997 looper letters, 63 selfloop transitions, 4 changer transitions 0/246 dead transitions. [2023-08-31 21:32:51,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 246 transitions, 671 flow [2023-08-31 21:32:51,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 21:32:51,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 21:32:51,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3910 transitions. [2023-08-31 21:32:51,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894842263395093 [2023-08-31 21:32:51,313 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3910 transitions. [2023-08-31 21:32:51,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3910 transitions. [2023-08-31 21:32:51,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:32:51,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3910 transitions. [2023-08-31 21:32:51,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 977.5) internal successors, (3910), 4 states have internal predecessors, (3910), 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) [2023-08-31 21:32:51,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1997.0) internal successors, (9985), 5 states have internal predecessors, (9985), 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) [2023-08-31 21:32:51,325 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1997.0) internal successors, (9985), 5 states have internal predecessors, (9985), 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) [2023-08-31 21:32:51,325 INFO L175 Difference]: Start difference. First operand has 246 places, 245 transitions, 535 flow. Second operand 4 states and 3910 transitions. [2023-08-31 21:32:51,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 246 transitions, 671 flow [2023-08-31 21:32:51,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 246 transitions, 665 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 21:32:51,329 INFO L231 Difference]: Finished difference. Result has 248 places, 246 transitions, 547 flow [2023-08-31 21:32:51,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=547, PETRI_PLACES=248, PETRI_TRANSITIONS=246} [2023-08-31 21:32:51,329 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -70 predicate places. [2023-08-31 21:32:51,329 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 246 transitions, 547 flow [2023-08-31 21:32:51,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 964.75) internal successors, (3859), 4 states have internal predecessors, (3859), 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) [2023-08-31 21:32:51,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:51,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:32:51,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 21:32:51,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:51,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:51,331 INFO L85 PathProgramCache]: Analyzing trace with hash -429197971, now seen corresponding path program 1 times [2023-08-31 21:32:51,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:51,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417876318] [2023-08-31 21:32:51,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:51,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:51,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 21:32:51,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:51,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417876318] [2023-08-31 21:32:51,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417876318] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 21:32:51,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523749257] [2023-08-31 21:32:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:51,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:32:51,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:32:51,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 21:32:51,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 21:32:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:51,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 21:32:51,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 21:32:51,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 21:32:51,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 21:32:51,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523749257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:51,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 21:32:51,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-08-31 21:32:51,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134980326] [2023-08-31 21:32:51,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:51,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 21:32:51,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 21:32:51,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 21:32:51,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 961 out of 1997 [2023-08-31 21:32:51,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 246 transitions, 547 flow. Second operand has 4 states, 4 states have (on average 965.0) internal successors, (3860), 4 states have internal predecessors, (3860), 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) [2023-08-31 21:32:51,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:51,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 961 of 1997 [2023-08-31 21:32:51,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:32:54,914 INFO L130 PetriNetUnfolder]: 11509/37591 cut-off events. [2023-08-31 21:32:54,915 INFO L131 PetriNetUnfolder]: For 464/464 co-relation queries the response was YES. [2023-08-31 21:32:55,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54196 conditions, 37591 events. 11509/37591 cut-off events. For 464/464 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 473917 event pairs, 9358 based on Foata normal form. 0/31883 useless extension candidates. Maximal degree in co-relation 54187. Up to 16014 conditions per place. [2023-08-31 21:32:55,132 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 65 selfloop transitions, 3 changer transitions 0/247 dead transitions. [2023-08-31 21:32:55,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 247 transitions, 685 flow [2023-08-31 21:32:55,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 21:32:55,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 21:32:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3909 transitions. [2023-08-31 21:32:55,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48935903855783675 [2023-08-31 21:32:55,138 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3909 transitions. [2023-08-31 21:32:55,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3909 transitions. [2023-08-31 21:32:55,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:32:55,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3909 transitions. [2023-08-31 21:32:55,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 977.25) internal successors, (3909), 4 states have internal predecessors, (3909), 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) [2023-08-31 21:32:55,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1997.0) internal successors, (9985), 5 states have internal predecessors, (9985), 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) [2023-08-31 21:32:55,150 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1997.0) internal successors, (9985), 5 states have internal predecessors, (9985), 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) [2023-08-31 21:32:55,150 INFO L175 Difference]: Start difference. First operand has 248 places, 246 transitions, 547 flow. Second operand 4 states and 3909 transitions. [2023-08-31 21:32:55,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 247 transitions, 685 flow [2023-08-31 21:32:55,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 247 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 21:32:55,154 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 557 flow [2023-08-31 21:32:55,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=557, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2023-08-31 21:32:55,156 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -68 predicate places. [2023-08-31 21:32:55,156 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 557 flow [2023-08-31 21:32:55,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 965.0) internal successors, (3860), 4 states have internal predecessors, (3860), 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) [2023-08-31 21:32:55,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:55,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:32:55,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 21:32:55,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:32:55,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:55,364 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash 729237032, now seen corresponding path program 1 times [2023-08-31 21:32:55,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:55,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113891410] [2023-08-31 21:32:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:55,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 21:32:55,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:55,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113891410] [2023-08-31 21:32:55,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113891410] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 21:32:55,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898482985] [2023-08-31 21:32:55,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:55,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 21:32:55,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 21:32:55,494 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 21:32:55,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 21:32:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:55,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 21:32:55,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 21:32:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 21:32:55,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 21:32:55,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898482985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:55,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 21:32:55,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-08-31 21:32:55,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913473324] [2023-08-31 21:32:55,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:55,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 21:32:55,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:55,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 21:32:55,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 21:32:55,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 961 out of 1997 [2023-08-31 21:32:55,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 557 flow. Second operand has 4 states, 4 states have (on average 965.25) internal successors, (3861), 4 states have internal predecessors, (3861), 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) [2023-08-31 21:32:55,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:55,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 961 of 1997 [2023-08-31 21:32:55,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:32:58,925 INFO L130 PetriNetUnfolder]: 11509/37592 cut-off events. [2023-08-31 21:32:58,925 INFO L131 PetriNetUnfolder]: For 463/463 co-relation queries the response was YES. [2023-08-31 21:32:59,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54203 conditions, 37592 events. 11509/37592 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 473967 event pairs, 9358 based on Foata normal form. 0/31885 useless extension candidates. Maximal degree in co-relation 54193. Up to 16015 conditions per place. [2023-08-31 21:32:59,151 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 66 selfloop transitions, 3 changer transitions 0/248 dead transitions. [2023-08-31 21:32:59,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 248 transitions, 697 flow [2023-08-31 21:32:59,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 21:32:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 21:32:59,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3909 transitions. [2023-08-31 21:32:59,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48935903855783675 [2023-08-31 21:32:59,157 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3909 transitions. [2023-08-31 21:32:59,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3909 transitions. [2023-08-31 21:32:59,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:32:59,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3909 transitions. [2023-08-31 21:32:59,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 977.25) internal successors, (3909), 4 states have internal predecessors, (3909), 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) [2023-08-31 21:32:59,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1997.0) internal successors, (9985), 5 states have internal predecessors, (9985), 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) [2023-08-31 21:32:59,169 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1997.0) internal successors, (9985), 5 states have internal predecessors, (9985), 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) [2023-08-31 21:32:59,169 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 557 flow. Second operand 4 states and 3909 transitions. [2023-08-31 21:32:59,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 248 transitions, 697 flow [2023-08-31 21:32:59,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 248 transitions, 691 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 21:32:59,172 INFO L231 Difference]: Finished difference. Result has 252 places, 248 transitions, 565 flow [2023-08-31 21:32:59,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=565, PETRI_PLACES=252, PETRI_TRANSITIONS=248} [2023-08-31 21:32:59,173 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -66 predicate places. [2023-08-31 21:32:59,173 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 248 transitions, 565 flow [2023-08-31 21:32:59,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 965.25) internal successors, (3861), 4 states have internal predecessors, (3861), 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) [2023-08-31 21:32:59,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:32:59,174 INFO L208 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] [2023-08-31 21:32:59,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-31 21:32:59,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-31 21:32:59,378 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:32:59,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:32:59,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1357595980, now seen corresponding path program 1 times [2023-08-31 21:32:59,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:32:59,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777071541] [2023-08-31 21:32:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:32:59,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:32:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:32:59,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 21:32:59,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:32:59,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777071541] [2023-08-31 21:32:59,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777071541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:32:59,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:32:59,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 21:32:59,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175004382] [2023-08-31 21:32:59,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:32:59,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 21:32:59,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:32:59,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 21:32:59,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 21:32:59,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 961 out of 1997 [2023-08-31 21:32:59,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 248 transitions, 565 flow. Second operand has 4 states, 4 states have (on average 965.5) internal successors, (3862), 4 states have internal predecessors, (3862), 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) [2023-08-31 21:32:59,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:32:59,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 961 of 1997 [2023-08-31 21:32:59,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:33:02,595 INFO L130 PetriNetUnfolder]: 11509/37593 cut-off events. [2023-08-31 21:33:02,595 INFO L131 PetriNetUnfolder]: For 465/465 co-relation queries the response was YES. [2023-08-31 21:33:02,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54209 conditions, 37593 events. 11509/37593 cut-off events. For 465/465 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 473996 event pairs, 9358 based on Foata normal form. 0/31887 useless extension candidates. Maximal degree in co-relation 54198. Up to 16016 conditions per place. [2023-08-31 21:33:02,787 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 67 selfloop transitions, 3 changer transitions 0/249 dead transitions. [2023-08-31 21:33:02,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 249 transitions, 707 flow [2023-08-31 21:33:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 21:33:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 21:33:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3909 transitions. [2023-08-31 21:33:02,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48935903855783675 [2023-08-31 21:33:02,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3909 transitions. [2023-08-31 21:33:02,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3909 transitions. [2023-08-31 21:33:02,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:33:02,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3909 transitions. [2023-08-31 21:33:02,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 977.25) internal successors, (3909), 4 states have internal predecessors, (3909), 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) [2023-08-31 21:33:02,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1997.0) internal successors, (9985), 5 states have internal predecessors, (9985), 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) [2023-08-31 21:33:02,800 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1997.0) internal successors, (9985), 5 states have internal predecessors, (9985), 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) [2023-08-31 21:33:02,800 INFO L175 Difference]: Start difference. First operand has 252 places, 248 transitions, 565 flow. Second operand 4 states and 3909 transitions. [2023-08-31 21:33:02,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 249 transitions, 707 flow [2023-08-31 21:33:02,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 249 transitions, 701 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 21:33:02,803 INFO L231 Difference]: Finished difference. Result has 254 places, 249 transitions, 573 flow [2023-08-31 21:33:02,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=559, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=573, PETRI_PLACES=254, PETRI_TRANSITIONS=249} [2023-08-31 21:33:02,804 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -64 predicate places. [2023-08-31 21:33:02,804 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 249 transitions, 573 flow [2023-08-31 21:33:02,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 965.5) internal successors, (3862), 4 states have internal predecessors, (3862), 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) [2023-08-31 21:33:02,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:33:02,805 INFO L208 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] [2023-08-31 21:33:02,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 21:33:02,805 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:33:02,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:33:02,806 INFO L85 PathProgramCache]: Analyzing trace with hash 296542500, now seen corresponding path program 1 times [2023-08-31 21:33:02,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:33:02,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392706395] [2023-08-31 21:33:02,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:33:02,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:33:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:33:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:33:03,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:33:03,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392706395] [2023-08-31 21:33:03,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392706395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:33:03,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:33:03,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 21:33:03,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842204959] [2023-08-31 21:33:03,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:33:03,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 21:33:03,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:33:03,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 21:33:03,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 21:33:03,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 951 out of 1997 [2023-08-31 21:33:03,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 249 transitions, 573 flow. Second operand has 6 states, 6 states have (on average 954.8333333333334) internal successors, (5729), 6 states have internal predecessors, (5729), 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) [2023-08-31 21:33:03,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:33:03,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 951 of 1997 [2023-08-31 21:33:03,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:33:09,352 INFO L130 PetriNetUnfolder]: 35817/70365 cut-off events. [2023-08-31 21:33:09,352 INFO L131 PetriNetUnfolder]: For 1119/1119 co-relation queries the response was YES. [2023-08-31 21:33:09,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119785 conditions, 70365 events. 35817/70365 cut-off events. For 1119/1119 co-relation queries the response was YES. Maximal size of possible extension queue 1958. Compared 750369 event pairs, 6750 based on Foata normal form. 0/58859 useless extension candidates. Maximal degree in co-relation 119773. Up to 17208 conditions per place. [2023-08-31 21:33:09,829 INFO L137 encePairwiseOnDemand]: 1992/1997 looper letters, 234 selfloop transitions, 4 changer transitions 0/412 dead transitions. [2023-08-31 21:33:09,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 412 transitions, 1395 flow [2023-08-31 21:33:09,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:33:09,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:33:09,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5934 transitions. [2023-08-31 21:33:09,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49524286429644465 [2023-08-31 21:33:09,836 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5934 transitions. [2023-08-31 21:33:09,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5934 transitions. [2023-08-31 21:33:09,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:33:09,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5934 transitions. [2023-08-31 21:33:09,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 989.0) internal successors, (5934), 6 states have internal predecessors, (5934), 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) [2023-08-31 21:33:09,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1997.0) internal successors, (13979), 7 states have internal predecessors, (13979), 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) [2023-08-31 21:33:09,848 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1997.0) internal successors, (13979), 7 states have internal predecessors, (13979), 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) [2023-08-31 21:33:09,848 INFO L175 Difference]: Start difference. First operand has 254 places, 249 transitions, 573 flow. Second operand 6 states and 5934 transitions. [2023-08-31 21:33:09,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 412 transitions, 1395 flow [2023-08-31 21:33:09,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 412 transitions, 1389 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 21:33:09,853 INFO L231 Difference]: Finished difference. Result has 256 places, 248 transitions, 573 flow [2023-08-31 21:33:09,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=256, PETRI_TRANSITIONS=248} [2023-08-31 21:33:09,853 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -62 predicate places. [2023-08-31 21:33:09,854 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 248 transitions, 573 flow [2023-08-31 21:33:09,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 954.8333333333334) internal successors, (5729), 6 states have internal predecessors, (5729), 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) [2023-08-31 21:33:09,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:33:09,854 INFO L208 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] [2023-08-31 21:33:09,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 21:33:09,855 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:33:09,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:33:09,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1466481967, now seen corresponding path program 1 times [2023-08-31 21:33:09,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:33:09,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894674072] [2023-08-31 21:33:09,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:33:09,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:33:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:33:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:33:10,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:33:10,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894674072] [2023-08-31 21:33:10,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894674072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:33:10,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:33:10,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 21:33:10,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235202202] [2023-08-31 21:33:10,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:33:10,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 21:33:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:33:10,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 21:33:10,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 21:33:10,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 932 out of 1997 [2023-08-31 21:33:10,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 248 transitions, 573 flow. Second operand has 6 states, 6 states have (on average 935.1666666666666) internal successors, (5611), 6 states have internal predecessors, (5611), 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) [2023-08-31 21:33:10,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:33:10,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 932 of 1997 [2023-08-31 21:33:10,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:33:17,793 INFO L130 PetriNetUnfolder]: 37620/91878 cut-off events. [2023-08-31 21:33:17,793 INFO L131 PetriNetUnfolder]: For 7425/7425 co-relation queries the response was YES. [2023-08-31 21:33:18,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152349 conditions, 91878 events. 37620/91878 cut-off events. For 7425/7425 co-relation queries the response was YES. Maximal size of possible extension queue 1964. Compared 1115818 event pairs, 8510 based on Foata normal form. 0/82484 useless extension candidates. Maximal degree in co-relation 152337. Up to 50469 conditions per place. [2023-08-31 21:33:18,459 INFO L137 encePairwiseOnDemand]: 1985/1997 looper letters, 192 selfloop transitions, 8 changer transitions 0/356 dead transitions. [2023-08-31 21:33:18,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 356 transitions, 1205 flow [2023-08-31 21:33:18,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:33:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:33:18,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5789 transitions. [2023-08-31 21:33:18,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831413787347688 [2023-08-31 21:33:18,465 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5789 transitions. [2023-08-31 21:33:18,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5789 transitions. [2023-08-31 21:33:18,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:33:18,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5789 transitions. [2023-08-31 21:33:18,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 964.8333333333334) internal successors, (5789), 6 states have internal predecessors, (5789), 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) [2023-08-31 21:33:18,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1997.0) internal successors, (13979), 7 states have internal predecessors, (13979), 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) [2023-08-31 21:33:18,478 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1997.0) internal successors, (13979), 7 states have internal predecessors, (13979), 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) [2023-08-31 21:33:18,478 INFO L175 Difference]: Start difference. First operand has 256 places, 248 transitions, 573 flow. Second operand 6 states and 5789 transitions. [2023-08-31 21:33:18,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 356 transitions, 1205 flow [2023-08-31 21:33:18,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 356 transitions, 1190 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 21:33:18,488 INFO L231 Difference]: Finished difference. Result has 257 places, 252 transitions, 620 flow [2023-08-31 21:33:18,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=620, PETRI_PLACES=257, PETRI_TRANSITIONS=252} [2023-08-31 21:33:18,489 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -61 predicate places. [2023-08-31 21:33:18,490 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 252 transitions, 620 flow [2023-08-31 21:33:18,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 935.1666666666666) internal successors, (5611), 6 states have internal predecessors, (5611), 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) [2023-08-31 21:33:18,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:33:18,490 INFO L208 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] [2023-08-31 21:33:18,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 21:33:18,491 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err2ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:33:18,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:33:18,491 INFO L85 PathProgramCache]: Analyzing trace with hash -634481860, now seen corresponding path program 1 times [2023-08-31 21:33:18,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:33:18,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809802893] [2023-08-31 21:33:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:33:18,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:33:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:33:19,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:33:19,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:33:19,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809802893] [2023-08-31 21:33:19,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809802893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:33:19,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:33:19,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 21:33:19,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18856886] [2023-08-31 21:33:19,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:33:19,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 21:33:19,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:33:19,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 21:33:19,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 21:33:19,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 932 out of 1997 [2023-08-31 21:33:19,661 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 252 transitions, 620 flow. Second operand has 6 states, 6 states have (on average 935.8333333333334) internal successors, (5615), 6 states have internal predecessors, (5615), 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) [2023-08-31 21:33:19,661 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:33:19,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 932 of 1997 [2023-08-31 21:33:19,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:33:26,802 INFO L130 PetriNetUnfolder]: 30861/90144 cut-off events. [2023-08-31 21:33:26,802 INFO L131 PetriNetUnfolder]: For 752/833 co-relation queries the response was YES. [2023-08-31 21:33:27,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134591 conditions, 90144 events. 30861/90144 cut-off events. For 752/833 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 1213057 event pairs, 14758 based on Foata normal form. 0/77842 useless extension candidates. Maximal degree in co-relation 134576. Up to 40273 conditions per place. [2023-08-31 21:33:27,470 INFO L137 encePairwiseOnDemand]: 1985/1997 looper letters, 170 selfloop transitions, 8 changer transitions 0/340 dead transitions. [2023-08-31 21:33:27,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 340 transitions, 1168 flow [2023-08-31 21:33:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:33:27,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:33:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5767 transitions. [2023-08-31 21:33:27,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4813052912702387 [2023-08-31 21:33:27,477 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5767 transitions. [2023-08-31 21:33:27,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5767 transitions. [2023-08-31 21:33:27,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:33:27,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5767 transitions. [2023-08-31 21:33:27,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 961.1666666666666) internal successors, (5767), 6 states have internal predecessors, (5767), 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) [2023-08-31 21:33:27,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1997.0) internal successors, (13979), 7 states have internal predecessors, (13979), 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) [2023-08-31 21:33:27,489 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1997.0) internal successors, (13979), 7 states have internal predecessors, (13979), 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) [2023-08-31 21:33:27,489 INFO L175 Difference]: Start difference. First operand has 257 places, 252 transitions, 620 flow. Second operand 6 states and 5767 transitions. [2023-08-31 21:33:27,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 340 transitions, 1168 flow [2023-08-31 21:33:27,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 340 transitions, 1168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:33:27,494 INFO L231 Difference]: Finished difference. Result has 262 places, 256 transitions, 674 flow [2023-08-31 21:33:27,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=674, PETRI_PLACES=262, PETRI_TRANSITIONS=256} [2023-08-31 21:33:27,494 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -56 predicate places. [2023-08-31 21:33:27,494 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 256 transitions, 674 flow [2023-08-31 21:33:27,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 935.8333333333334) internal successors, (5615), 6 states have internal predecessors, (5615), 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) [2023-08-31 21:33:27,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:33:27,495 INFO L208 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] [2023-08-31 21:33:27,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 21:33:27,496 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:33:27,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:33:27,496 INFO L85 PathProgramCache]: Analyzing trace with hash 305190290, now seen corresponding path program 1 times [2023-08-31 21:33:27,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:33:27,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745777946] [2023-08-31 21:33:27,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:33:27,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:33:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:33:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:33:27,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:33:27,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745777946] [2023-08-31 21:33:27,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745777946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:33:27,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:33:27,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:33:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462182558] [2023-08-31 21:33:27,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:33:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:33:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:33:27,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:33:27,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:33:27,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 962 out of 1997 [2023-08-31 21:33:27,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 256 transitions, 674 flow. Second operand has 3 states, 3 states have (on average 968.3333333333334) internal successors, (2905), 3 states have internal predecessors, (2905), 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) [2023-08-31 21:33:27,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:33:27,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 962 of 1997 [2023-08-31 21:33:27,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:33:32,877 INFO L130 PetriNetUnfolder]: 22916/62348 cut-off events. [2023-08-31 21:33:32,877 INFO L131 PetriNetUnfolder]: For 1736/1767 co-relation queries the response was YES. [2023-08-31 21:33:33,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96983 conditions, 62348 events. 22916/62348 cut-off events. For 1736/1767 co-relation queries the response was YES. Maximal size of possible extension queue 1487. Compared 776092 event pairs, 6268 based on Foata normal form. 0/55302 useless extension candidates. Maximal degree in co-relation 96964. Up to 31845 conditions per place. [2023-08-31 21:33:33,367 INFO L137 encePairwiseOnDemand]: 1991/1997 looper letters, 98 selfloop transitions, 2 changer transitions 0/275 dead transitions. [2023-08-31 21:33:33,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 275 transitions, 925 flow [2023-08-31 21:33:33,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:33:33,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:33:33,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2980 transitions. [2023-08-31 21:33:33,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4974127858454348 [2023-08-31 21:33:33,371 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2980 transitions. [2023-08-31 21:33:33,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2980 transitions. [2023-08-31 21:33:33,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:33:33,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2980 transitions. [2023-08-31 21:33:33,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 993.3333333333334) internal successors, (2980), 3 states have internal predecessors, (2980), 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) [2023-08-31 21:33:33,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:33:33,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:33:33,378 INFO L175 Difference]: Start difference. First operand has 262 places, 256 transitions, 674 flow. Second operand 3 states and 2980 transitions. [2023-08-31 21:33:33,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 275 transitions, 925 flow [2023-08-31 21:33:33,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 275 transitions, 925 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:33:33,382 INFO L231 Difference]: Finished difference. Result has 261 places, 254 transitions, 680 flow [2023-08-31 21:33:33,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=680, PETRI_PLACES=261, PETRI_TRANSITIONS=254} [2023-08-31 21:33:33,383 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -57 predicate places. [2023-08-31 21:33:33,383 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 254 transitions, 680 flow [2023-08-31 21:33:33,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 968.3333333333334) internal successors, (2905), 3 states have internal predecessors, (2905), 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) [2023-08-31 21:33:33,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:33:33,383 INFO L208 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] [2023-08-31 21:33:33,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 21:33:33,384 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err5ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:33:33,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:33:33,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1230170132, now seen corresponding path program 1 times [2023-08-31 21:33:33,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:33:33,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172068490] [2023-08-31 21:33:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:33:33,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:33:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:33:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:33:33,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:33:33,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172068490] [2023-08-31 21:33:33,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172068490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:33:33,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:33:33,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:33:33,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240213286] [2023-08-31 21:33:33,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:33:33,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:33:33,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:33:33,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:33:33,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:33:33,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 944 out of 1997 [2023-08-31 21:33:33,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 254 transitions, 680 flow. Second operand has 3 states, 3 states have (on average 950.6666666666666) internal successors, (2852), 3 states have internal predecessors, (2852), 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) [2023-08-31 21:33:33,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:33:33,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 944 of 1997 [2023-08-31 21:33:33,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:33:40,162 INFO L130 PetriNetUnfolder]: 29115/76935 cut-off events. [2023-08-31 21:33:40,162 INFO L131 PetriNetUnfolder]: For 3273/3318 co-relation queries the response was YES. [2023-08-31 21:33:40,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122599 conditions, 76935 events. 29115/76935 cut-off events. For 3273/3318 co-relation queries the response was YES. Maximal size of possible extension queue 1868. Compared 974410 event pairs, 23332 based on Foata normal form. 0/69965 useless extension candidates. Maximal degree in co-relation 122579. Up to 41701 conditions per place. [2023-08-31 21:33:40,841 INFO L137 encePairwiseOnDemand]: 1990/1997 looper letters, 82 selfloop transitions, 1 changer transitions 0/248 dead transitions. [2023-08-31 21:33:40,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 248 transitions, 834 flow [2023-08-31 21:33:40,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:33:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:33:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2911 transitions. [2023-08-31 21:33:40,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485895509931564 [2023-08-31 21:33:40,845 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2911 transitions. [2023-08-31 21:33:40,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2911 transitions. [2023-08-31 21:33:40,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:33:40,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2911 transitions. [2023-08-31 21:33:40,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 970.3333333333334) internal successors, (2911), 3 states have internal predecessors, (2911), 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) [2023-08-31 21:33:40,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:33:40,985 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:33:40,985 INFO L175 Difference]: Start difference. First operand has 261 places, 254 transitions, 680 flow. Second operand 3 states and 2911 transitions. [2023-08-31 21:33:40,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 248 transitions, 834 flow [2023-08-31 21:33:40,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 248 transitions, 834 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:33:40,990 INFO L231 Difference]: Finished difference. Result has 257 places, 248 transitions, 670 flow [2023-08-31 21:33:40,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=670, PETRI_PLACES=257, PETRI_TRANSITIONS=248} [2023-08-31 21:33:40,991 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -61 predicate places. [2023-08-31 21:33:40,991 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 248 transitions, 670 flow [2023-08-31 21:33:40,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 950.6666666666666) internal successors, (2852), 3 states have internal predecessors, (2852), 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) [2023-08-31 21:33:40,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:33:40,991 INFO L208 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] [2023-08-31 21:33:40,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 21:33:40,992 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:33:40,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:33:40,992 INFO L85 PathProgramCache]: Analyzing trace with hash 52370232, now seen corresponding path program 1 times [2023-08-31 21:33:40,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:33:40,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608092067] [2023-08-31 21:33:40,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:33:40,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:33:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:33:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:33:41,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:33:41,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608092067] [2023-08-31 21:33:41,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608092067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:33:41,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:33:41,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 21:33:41,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815179027] [2023-08-31 21:33:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:33:41,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 21:33:41,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:33:41,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 21:33:41,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-31 21:33:41,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 932 out of 1997 [2023-08-31 21:33:41,914 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 248 transitions, 670 flow. Second operand has 6 states, 6 states have (on average 935.8333333333334) internal successors, (5615), 6 states have internal predecessors, (5615), 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) [2023-08-31 21:33:41,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:33:41,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 932 of 1997 [2023-08-31 21:33:41,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:33:48,940 INFO L130 PetriNetUnfolder]: 36955/77616 cut-off events. [2023-08-31 21:33:48,940 INFO L131 PetriNetUnfolder]: For 4043/4090 co-relation queries the response was YES. [2023-08-31 21:33:49,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135006 conditions, 77616 events. 36955/77616 cut-off events. For 4043/4090 co-relation queries the response was YES. Maximal size of possible extension queue 1769. Compared 855614 event pairs, 6990 based on Foata normal form. 0/70288 useless extension candidates. Maximal degree in co-relation 134985. Up to 46950 conditions per place. [2023-08-31 21:33:49,601 INFO L137 encePairwiseOnDemand]: 1985/1997 looper letters, 196 selfloop transitions, 8 changer transitions 0/360 dead transitions. [2023-08-31 21:33:49,601 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 360 transitions, 1370 flow [2023-08-31 21:33:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 21:33:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 21:33:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 5782 transitions. [2023-08-31 21:33:49,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4825571690869638 [2023-08-31 21:33:49,607 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 5782 transitions. [2023-08-31 21:33:49,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 5782 transitions. [2023-08-31 21:33:49,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:33:49,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 5782 transitions. [2023-08-31 21:33:49,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 963.6666666666666) internal successors, (5782), 6 states have internal predecessors, (5782), 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) [2023-08-31 21:33:49,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1997.0) internal successors, (13979), 7 states have internal predecessors, (13979), 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) [2023-08-31 21:33:49,618 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1997.0) internal successors, (13979), 7 states have internal predecessors, (13979), 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) [2023-08-31 21:33:49,618 INFO L175 Difference]: Start difference. First operand has 257 places, 248 transitions, 670 flow. Second operand 6 states and 5782 transitions. [2023-08-31 21:33:49,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 360 transitions, 1370 flow [2023-08-31 21:33:49,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 360 transitions, 1369 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 21:33:49,624 INFO L231 Difference]: Finished difference. Result has 261 places, 252 transitions, 723 flow [2023-08-31 21:33:49,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=723, PETRI_PLACES=261, PETRI_TRANSITIONS=252} [2023-08-31 21:33:49,624 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -57 predicate places. [2023-08-31 21:33:49,625 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 252 transitions, 723 flow [2023-08-31 21:33:49,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 935.8333333333334) internal successors, (5615), 6 states have internal predecessors, (5615), 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) [2023-08-31 21:33:49,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:33:49,625 INFO L208 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] [2023-08-31 21:33:49,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 21:33:49,626 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:33:49,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:33:49,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1573677098, now seen corresponding path program 1 times [2023-08-31 21:33:49,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:33:49,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882105186] [2023-08-31 21:33:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:33:49,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:33:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:33:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:33:49,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:33:49,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882105186] [2023-08-31 21:33:49,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882105186] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:33:49,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:33:49,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:33:49,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225642575] [2023-08-31 21:33:49,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:33:49,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:33:49,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:33:49,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:33:49,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:33:49,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 968 out of 1997 [2023-08-31 21:33:49,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 252 transitions, 723 flow. Second operand has 3 states, 3 states have (on average 974.3333333333334) internal successors, (2923), 3 states have internal predecessors, (2923), 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) [2023-08-31 21:33:49,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:33:49,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 968 of 1997 [2023-08-31 21:33:49,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:33:55,435 INFO L130 PetriNetUnfolder]: 20298/66429 cut-off events. [2023-08-31 21:33:55,435 INFO L131 PetriNetUnfolder]: For 2587/2668 co-relation queries the response was YES. [2023-08-31 21:33:55,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100506 conditions, 66429 events. 20298/66429 cut-off events. For 2587/2668 co-relation queries the response was YES. Maximal size of possible extension queue 1574. Compared 907340 event pairs, 4720 based on Foata normal form. 0/60194 useless extension candidates. Maximal degree in co-relation 100482. Up to 24477 conditions per place. [2023-08-31 21:33:56,202 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 108 selfloop transitions, 2 changer transitions 0/285 dead transitions. [2023-08-31 21:33:56,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 285 transitions, 1032 flow [2023-08-31 21:33:56,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:33:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:33:56,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3002 transitions. [2023-08-31 21:33:56,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.501084960774495 [2023-08-31 21:33:56,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3002 transitions. [2023-08-31 21:33:56,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3002 transitions. [2023-08-31 21:33:56,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:33:56,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3002 transitions. [2023-08-31 21:33:56,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1000.6666666666666) internal successors, (3002), 3 states have internal predecessors, (3002), 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) [2023-08-31 21:33:56,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:33:56,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:33:56,211 INFO L175 Difference]: Start difference. First operand has 261 places, 252 transitions, 723 flow. Second operand 3 states and 3002 transitions. [2023-08-31 21:33:56,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 285 transitions, 1032 flow [2023-08-31 21:33:56,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 285 transitions, 1032 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:33:56,221 INFO L231 Difference]: Finished difference. Result has 262 places, 252 transitions, 733 flow [2023-08-31 21:33:56,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=733, PETRI_PLACES=262, PETRI_TRANSITIONS=252} [2023-08-31 21:33:56,222 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -56 predicate places. [2023-08-31 21:33:56,222 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 252 transitions, 733 flow [2023-08-31 21:33:56,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 974.3333333333334) internal successors, (2923), 3 states have internal predecessors, (2923), 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) [2023-08-31 21:33:56,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:33:56,223 INFO L208 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] [2023-08-31 21:33:56,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 21:33:56,223 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:33:56,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:33:56,223 INFO L85 PathProgramCache]: Analyzing trace with hash 750934377, now seen corresponding path program 1 times [2023-08-31 21:33:56,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:33:56,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109789679] [2023-08-31 21:33:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:33:56,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:33:56,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:33:56,261 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:33:56,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:33:56,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109789679] [2023-08-31 21:33:56,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109789679] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:33:56,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:33:56,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:33:56,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413646589] [2023-08-31 21:33:56,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:33:56,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:33:56,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:33:56,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:33:56,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:33:56,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 968 out of 1997 [2023-08-31 21:33:56,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 252 transitions, 733 flow. Second operand has 3 states, 3 states have (on average 976.3333333333334) internal successors, (2929), 3 states have internal predecessors, (2929), 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) [2023-08-31 21:33:56,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:33:56,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 968 of 1997 [2023-08-31 21:33:56,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:34:02,012 INFO L130 PetriNetUnfolder]: 22088/62484 cut-off events. [2023-08-31 21:34:02,012 INFO L131 PetriNetUnfolder]: For 4160/4249 co-relation queries the response was YES. [2023-08-31 21:34:02,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101934 conditions, 62484 events. 22088/62484 cut-off events. For 4160/4249 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 809427 event pairs, 4893 based on Foata normal form. 0/56844 useless extension candidates. Maximal degree in co-relation 101909. Up to 23786 conditions per place. [2023-08-31 21:34:02,557 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 115 selfloop transitions, 2 changer transitions 0/290 dead transitions. [2023-08-31 21:34:02,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 290 transitions, 1071 flow [2023-08-31 21:34:02,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:34:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:34:02,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3007 transitions. [2023-08-31 21:34:02,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019195459856451 [2023-08-31 21:34:02,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3007 transitions. [2023-08-31 21:34:02,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3007 transitions. [2023-08-31 21:34:02,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:34:02,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3007 transitions. [2023-08-31 21:34:02,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1002.3333333333334) internal successors, (3007), 3 states have internal predecessors, (3007), 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) [2023-08-31 21:34:02,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:02,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:02,566 INFO L175 Difference]: Start difference. First operand has 262 places, 252 transitions, 733 flow. Second operand 3 states and 3007 transitions. [2023-08-31 21:34:02,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 290 transitions, 1071 flow [2023-08-31 21:34:02,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 290 transitions, 1071 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:34:02,577 INFO L231 Difference]: Finished difference. Result has 263 places, 252 transitions, 743 flow [2023-08-31 21:34:02,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=743, PETRI_PLACES=263, PETRI_TRANSITIONS=252} [2023-08-31 21:34:02,578 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -55 predicate places. [2023-08-31 21:34:02,578 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 252 transitions, 743 flow [2023-08-31 21:34:02,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 976.3333333333334) internal successors, (2929), 3 states have internal predecessors, (2929), 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) [2023-08-31 21:34:02,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:34:02,579 INFO L208 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, 1, 1] [2023-08-31 21:34:02,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 21:34:02,579 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:34:02,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:34:02,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1633107175, now seen corresponding path program 1 times [2023-08-31 21:34:02,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:34:02,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681411153] [2023-08-31 21:34:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:34:02,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:34:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:34:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:34:02,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:34:02,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681411153] [2023-08-31 21:34:02,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681411153] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:34:02,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:34:02,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:34:02,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621161517] [2023-08-31 21:34:02,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:34:02,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:34:02,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:34:02,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:34:02,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:34:02,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 950 out of 1997 [2023-08-31 21:34:02,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 252 transitions, 743 flow. Second operand has 3 states, 3 states have (on average 956.6666666666666) internal successors, (2870), 3 states have internal predecessors, (2870), 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) [2023-08-31 21:34:02,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:34:02,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 950 of 1997 [2023-08-31 21:34:02,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:34:10,232 INFO L130 PetriNetUnfolder]: 26141/79414 cut-off events. [2023-08-31 21:34:10,232 INFO L131 PetriNetUnfolder]: For 5355/5438 co-relation queries the response was YES. [2023-08-31 21:34:10,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127073 conditions, 79414 events. 26141/79414 cut-off events. For 5355/5438 co-relation queries the response was YES. Maximal size of possible extension queue 1957. Compared 1083651 event pairs, 6397 based on Foata normal form. 0/72176 useless extension candidates. Maximal degree in co-relation 127047. Up to 31043 conditions per place. [2023-08-31 21:34:10,976 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 116 selfloop transitions, 2 changer transitions 0/287 dead transitions. [2023-08-31 21:34:10,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 287 transitions, 1079 flow [2023-08-31 21:34:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:34:10,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:34:10,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2952 transitions. [2023-08-31 21:34:10,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4927391086629945 [2023-08-31 21:34:10,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2952 transitions. [2023-08-31 21:34:10,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2952 transitions. [2023-08-31 21:34:10,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:34:10,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2952 transitions. [2023-08-31 21:34:10,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.0) internal successors, (2952), 3 states have internal predecessors, (2952), 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) [2023-08-31 21:34:10,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:10,984 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:10,984 INFO L175 Difference]: Start difference. First operand has 263 places, 252 transitions, 743 flow. Second operand 3 states and 2952 transitions. [2023-08-31 21:34:10,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 287 transitions, 1079 flow [2023-08-31 21:34:10,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 287 transitions, 1079 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:34:10,998 INFO L231 Difference]: Finished difference. Result has 264 places, 252 transitions, 753 flow [2023-08-31 21:34:10,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=753, PETRI_PLACES=264, PETRI_TRANSITIONS=252} [2023-08-31 21:34:10,998 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -54 predicate places. [2023-08-31 21:34:10,998 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 252 transitions, 753 flow [2023-08-31 21:34:10,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 956.6666666666666) internal successors, (2870), 3 states have internal predecessors, (2870), 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) [2023-08-31 21:34:10,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:34:10,999 INFO L208 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, 1, 1, 1] [2023-08-31 21:34:10,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 21:34:10,999 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err10ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:34:11,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:34:11,000 INFO L85 PathProgramCache]: Analyzing trace with hash -327793627, now seen corresponding path program 1 times [2023-08-31 21:34:11,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:34:11,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456291744] [2023-08-31 21:34:11,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:34:11,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:34:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:34:11,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:34:11,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:34:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456291744] [2023-08-31 21:34:11,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456291744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:34:11,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:34:11,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:34:11,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628283201] [2023-08-31 21:34:11,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:34:11,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:34:11,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:34:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:34:11,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:34:11,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 950 out of 1997 [2023-08-31 21:34:11,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 252 transitions, 753 flow. Second operand has 3 states, 3 states have (on average 958.6666666666666) internal successors, (2876), 3 states have internal predecessors, (2876), 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) [2023-08-31 21:34:11,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:34:11,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 950 of 1997 [2023-08-31 21:34:11,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:34:17,357 INFO L130 PetriNetUnfolder]: 21820/63198 cut-off events. [2023-08-31 21:34:17,357 INFO L131 PetriNetUnfolder]: For 4991/5098 co-relation queries the response was YES. [2023-08-31 21:34:17,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104573 conditions, 63198 events. 21820/63198 cut-off events. For 4991/5098 co-relation queries the response was YES. Maximal size of possible extension queue 1657. Compared 824549 event pairs, 6021 based on Foata normal form. 4/57678 useless extension candidates. Maximal degree in co-relation 104546. Up to 21018 conditions per place. [2023-08-31 21:34:17,920 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 118 selfloop transitions, 2 changer transitions 0/292 dead transitions. [2023-08-31 21:34:17,920 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 292 transitions, 1105 flow [2023-08-31 21:34:17,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:34:17,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:34:17,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2954 transitions. [2023-08-31 21:34:17,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930729427474545 [2023-08-31 21:34:17,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2954 transitions. [2023-08-31 21:34:17,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2954 transitions. [2023-08-31 21:34:17,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:34:17,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2954 transitions. [2023-08-31 21:34:17,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 984.6666666666666) internal successors, (2954), 3 states have internal predecessors, (2954), 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) [2023-08-31 21:34:17,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:17,927 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:17,927 INFO L175 Difference]: Start difference. First operand has 264 places, 252 transitions, 753 flow. Second operand 3 states and 2954 transitions. [2023-08-31 21:34:17,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 292 transitions, 1105 flow [2023-08-31 21:34:17,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 292 transitions, 1105 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:34:17,940 INFO L231 Difference]: Finished difference. Result has 265 places, 252 transitions, 763 flow [2023-08-31 21:34:17,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=763, PETRI_PLACES=265, PETRI_TRANSITIONS=252} [2023-08-31 21:34:17,941 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -53 predicate places. [2023-08-31 21:34:17,941 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 252 transitions, 763 flow [2023-08-31 21:34:17,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 958.6666666666666) internal successors, (2876), 3 states have internal predecessors, (2876), 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) [2023-08-31 21:34:17,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:34:17,942 INFO L208 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, 1, 1, 1, 1] [2023-08-31 21:34:17,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 21:34:17,942 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:34:17,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:34:17,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1753880610, now seen corresponding path program 1 times [2023-08-31 21:34:17,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:34:17,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598621546] [2023-08-31 21:34:17,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:34:17,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:34:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:34:18,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:34:18,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:34:18,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598621546] [2023-08-31 21:34:18,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598621546] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:34:18,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:34:18,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 21:34:18,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886309791] [2023-08-31 21:34:18,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:34:18,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:34:18,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:34:18,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:34:18,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:34:18,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 968 out of 1997 [2023-08-31 21:34:18,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 252 transitions, 763 flow. Second operand has 3 states, 3 states have (on average 974.6666666666666) internal successors, (2924), 3 states have internal predecessors, (2924), 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) [2023-08-31 21:34:18,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:34:18,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 968 of 1997 [2023-08-31 21:34:18,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:34:25,409 INFO L130 PetriNetUnfolder]: 22286/74004 cut-off events. [2023-08-31 21:34:25,409 INFO L131 PetriNetUnfolder]: For 5634/5747 co-relation queries the response was YES. [2023-08-31 21:34:25,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117853 conditions, 74004 events. 22286/74004 cut-off events. For 5634/5747 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 1034900 event pairs, 12645 based on Foata normal form. 0/68847 useless extension candidates. Maximal degree in co-relation 117825. Up to 25185 conditions per place. [2023-08-31 21:34:26,158 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 115 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2023-08-31 21:34:26,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 292 transitions, 1105 flow [2023-08-31 21:34:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:34:26,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:34:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3004 transitions. [2023-08-31 21:34:26,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014187948589551 [2023-08-31 21:34:26,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3004 transitions. [2023-08-31 21:34:26,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3004 transitions. [2023-08-31 21:34:26,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:34:26,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3004 transitions. [2023-08-31 21:34:26,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1001.3333333333334) internal successors, (3004), 3 states have internal predecessors, (3004), 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) [2023-08-31 21:34:26,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:26,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:26,166 INFO L175 Difference]: Start difference. First operand has 265 places, 252 transitions, 763 flow. Second operand 3 states and 3004 transitions. [2023-08-31 21:34:26,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 292 transitions, 1105 flow [2023-08-31 21:34:26,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 292 transitions, 1105 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:34:26,180 INFO L231 Difference]: Finished difference. Result has 269 places, 254 transitions, 785 flow [2023-08-31 21:34:26,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=785, PETRI_PLACES=269, PETRI_TRANSITIONS=254} [2023-08-31 21:34:26,181 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -49 predicate places. [2023-08-31 21:34:26,181 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 254 transitions, 785 flow [2023-08-31 21:34:26,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 974.6666666666666) internal successors, (2924), 3 states have internal predecessors, (2924), 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) [2023-08-31 21:34:26,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:34:26,182 INFO L208 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, 1, 1, 1, 1, 1] [2023-08-31 21:34:26,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 21:34:26,182 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread3Err11ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:34:26,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:34:26,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1476765618, now seen corresponding path program 1 times [2023-08-31 21:34:26,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:34:26,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545716897] [2023-08-31 21:34:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:34:26,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:34:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:34:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:34:26,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:34:26,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545716897] [2023-08-31 21:34:26,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545716897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:34:26,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:34:26,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:34:26,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112438460] [2023-08-31 21:34:26,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:34:26,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:34:26,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:34:26,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:34:26,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:34:26,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 968 out of 1997 [2023-08-31 21:34:26,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 254 transitions, 785 flow. Second operand has 3 states, 3 states have (on average 977.3333333333334) internal successors, (2932), 3 states have internal predecessors, (2932), 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) [2023-08-31 21:34:26,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:34:26,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 968 of 1997 [2023-08-31 21:34:26,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:34:37,563 INFO L130 PetriNetUnfolder]: 36497/108059 cut-off events. [2023-08-31 21:34:37,563 INFO L131 PetriNetUnfolder]: For 18350/18471 co-relation queries the response was YES. [2023-08-31 21:34:38,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184945 conditions, 108059 events. 36497/108059 cut-off events. For 18350/18471 co-relation queries the response was YES. Maximal size of possible extension queue 2411. Compared 1509436 event pairs, 13689 based on Foata normal form. 0/101162 useless extension candidates. Maximal degree in co-relation 184915. Up to 28081 conditions per place. [2023-08-31 21:34:38,824 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 133 selfloop transitions, 2 changer transitions 0/305 dead transitions. [2023-08-31 21:34:38,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 305 transitions, 1218 flow [2023-08-31 21:34:38,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:34:38,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:34:38,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3015 transitions. [2023-08-31 21:34:38,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5032548823234853 [2023-08-31 21:34:38,827 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3015 transitions. [2023-08-31 21:34:38,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3015 transitions. [2023-08-31 21:34:38,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:34:38,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3015 transitions. [2023-08-31 21:34:38,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1005.0) internal successors, (3015), 3 states have internal predecessors, (3015), 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) [2023-08-31 21:34:38,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:38,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:38,832 INFO L175 Difference]: Start difference. First operand has 269 places, 254 transitions, 785 flow. Second operand 3 states and 3015 transitions. [2023-08-31 21:34:38,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 305 transitions, 1218 flow [2023-08-31 21:34:39,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 305 transitions, 1206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 21:34:39,093 INFO L231 Difference]: Finished difference. Result has 268 places, 254 transitions, 789 flow [2023-08-31 21:34:39,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=789, PETRI_PLACES=268, PETRI_TRANSITIONS=254} [2023-08-31 21:34:39,093 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -50 predicate places. [2023-08-31 21:34:39,094 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 254 transitions, 789 flow [2023-08-31 21:34:39,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 977.3333333333334) internal successors, (2932), 3 states have internal predecessors, (2932), 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) [2023-08-31 21:34:39,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:34:39,094 INFO L208 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, 1, 1, 1, 1, 1, 1] [2023-08-31 21:34:39,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 21:34:39,094 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err24ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:34:39,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:34:39,095 INFO L85 PathProgramCache]: Analyzing trace with hash -535109417, now seen corresponding path program 1 times [2023-08-31 21:34:39,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:34:39,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179150994] [2023-08-31 21:34:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:34:39,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:34:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:34:39,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:34:39,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:34:39,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179150994] [2023-08-31 21:34:39,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179150994] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:34:39,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:34:39,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 21:34:39,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530390397] [2023-08-31 21:34:39,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:34:39,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:34:39,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:34:39,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:34:39,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:34:39,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 968 out of 1997 [2023-08-31 21:34:39,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 254 transitions, 789 flow. Second operand has 3 states, 3 states have (on average 975.3333333333334) internal successors, (2926), 3 states have internal predecessors, (2926), 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) [2023-08-31 21:34:39,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:34:39,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 968 of 1997 [2023-08-31 21:34:39,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 21:34:51,140 INFO L130 PetriNetUnfolder]: 35184/113534 cut-off events. [2023-08-31 21:34:51,140 INFO L131 PetriNetUnfolder]: For 13232/13357 co-relation queries the response was YES. [2023-08-31 21:34:52,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189225 conditions, 113534 events. 35184/113534 cut-off events. For 13232/13357 co-relation queries the response was YES. Maximal size of possible extension queue 2421. Compared 1649906 event pairs, 19251 based on Foata normal form. 0/107229 useless extension candidates. Maximal degree in co-relation 189195. Up to 36843 conditions per place. [2023-08-31 21:34:52,758 INFO L137 encePairwiseOnDemand]: 1993/1997 looper letters, 123 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2023-08-31 21:34:52,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 298 transitions, 1178 flow [2023-08-31 21:34:52,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 21:34:52,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 21:34:52,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3004 transitions. [2023-08-31 21:34:52,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5014187948589551 [2023-08-31 21:34:52,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 3004 transitions. [2023-08-31 21:34:52,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3004 transitions. [2023-08-31 21:34:52,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 21:34:52,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 3004 transitions. [2023-08-31 21:34:52,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 1001.3333333333334) internal successors, (3004), 3 states have internal predecessors, (3004), 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) [2023-08-31 21:34:52,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:52,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1997.0) internal successors, (7988), 4 states have internal predecessors, (7988), 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) [2023-08-31 21:34:52,766 INFO L175 Difference]: Start difference. First operand has 268 places, 254 transitions, 789 flow. Second operand 3 states and 3004 transitions. [2023-08-31 21:34:52,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 298 transitions, 1178 flow [2023-08-31 21:34:52,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 298 transitions, 1178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 21:34:52,819 INFO L231 Difference]: Finished difference. Result has 272 places, 256 transitions, 811 flow [2023-08-31 21:34:52,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1997, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=811, PETRI_PLACES=272, PETRI_TRANSITIONS=256} [2023-08-31 21:34:52,820 INFO L281 CegarLoopForPetriNet]: 318 programPoint places, -46 predicate places. [2023-08-31 21:34:52,820 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 256 transitions, 811 flow [2023-08-31 21:34:52,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 975.3333333333334) internal successors, (2926), 3 states have internal predecessors, (2926), 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) [2023-08-31 21:34:52,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:34:52,820 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:34:52,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 21:34:52,821 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err13ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 193 more)] === [2023-08-31 21:34:52,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:34:52,821 INFO L85 PathProgramCache]: Analyzing trace with hash -64533642, now seen corresponding path program 1 times [2023-08-31 21:34:52,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:34:52,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623979737] [2023-08-31 21:34:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:34:52,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:34:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 21:34:52,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 21:34:52,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 21:34:52,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623979737] [2023-08-31 21:34:52,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623979737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 21:34:52,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 21:34:52,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 21:34:52,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516179510] [2023-08-31 21:34:52,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 21:34:52,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 21:34:52,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 21:34:52,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 21:34:52,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 21:34:53,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 950 out of 1997 [2023-08-31 21:34:53,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 256 transitions, 811 flow. Second operand has 3 states, 3 states have (on average 960.0) internal successors, (2880), 3 states have internal predecessors, (2880), 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) [2023-08-31 21:34:53,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 21:34:53,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 950 of 1997 [2023-08-31 21:34:53,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand