./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/qrcu-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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 ../sv-benchmarks/c/pthread-atomic/qrcu-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:00:20,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:00:20,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:00:20,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:00:20,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:00:20,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:00:20,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:00:20,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:00:20,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:00:20,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:00:20,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:00:20,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:00:20,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:00:20,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:00:20,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:00:20,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:00:20,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:00:20,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:00:20,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:00:20,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:00:20,753 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:00:20,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:00:20,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:00:20,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:00:20,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:00:20,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:00:20,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:00:20,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:00:20,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:00:20,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:00:20,763 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:00:20,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:00:20,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:00:20,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:00:20,765 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:00:20,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:00:20,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:00:20,766 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:00:20,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:00:20,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:00:20,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:00:20,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:00:20,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:00:20,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:00:20,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:00:20,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:00:20,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:00:20,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:00:20,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:00:20,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:00:20,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:00:20,797 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:00:20,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:00:20,798 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:00:20,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:00:20,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:00:20,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:00:20,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:00:20,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:00:20,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:00:20,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:00:20,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:00:20,800 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:00:20,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:00:20,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:00:20,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:00:20,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:00:20,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:00:20,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:00:20,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:00:20,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:00:20,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:00:20,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:00:20,802 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:00:20,802 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:00:20,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:00:20,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2022-07-12 10:00:20,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:00:20,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:00:21,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:00:21,002 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:00:21,002 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:00:21,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-07-12 10:00:21,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a60372b7/1a85061bc5614f739cb13d8c38f600a9/FLAG7ed8afc17 [2022-07-12 10:00:21,408 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:00:21,408 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-07-12 10:00:21,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a60372b7/1a85061bc5614f739cb13d8c38f600a9/FLAG7ed8afc17 [2022-07-12 10:00:21,771 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a60372b7/1a85061bc5614f739cb13d8c38f600a9 [2022-07-12 10:00:21,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:00:21,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:00:21,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:00:21,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:00:21,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:00:21,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:00:21" (1/1) ... [2022-07-12 10:00:21,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebe8f57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:21, skipping insertion in model container [2022-07-12 10:00:21,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:00:21" (1/1) ... [2022-07-12 10:00:21,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:00:21,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:00:22,066 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2022-07-12 10:00:22,072 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2022-07-12 10:00:22,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:00:22,099 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:00:22,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2022-07-12 10:00:22,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2022-07-12 10:00:22,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:00:22,167 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:00:22,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22 WrapperNode [2022-07-12 10:00:22,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:00:22,168 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:00:22,168 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:00:22,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:00:22,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (1/1) ... [2022-07-12 10:00:22,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (1/1) ... [2022-07-12 10:00:22,203 INFO L137 Inliner]: procedures = 177, calls = 54, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 270 [2022-07-12 10:00:22,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:00:22,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:00:22,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:00:22,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:00:22,209 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (1/1) ... [2022-07-12 10:00:22,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (1/1) ... [2022-07-12 10:00:22,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (1/1) ... [2022-07-12 10:00:22,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (1/1) ... [2022-07-12 10:00:22,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (1/1) ... [2022-07-12 10:00:22,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (1/1) ... [2022-07-12 10:00:22,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (1/1) ... [2022-07-12 10:00:22,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:00:22,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:00:22,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:00:22,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:00:22,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (1/1) ... [2022-07-12 10:00:22,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:00:22,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:00:22,269 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) [2022-07-12 10:00:22,270 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 [2022-07-12 10:00:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-07-12 10:00:22,297 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-07-12 10:00:22,297 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-07-12 10:00:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-07-12 10:00:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:00:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:00:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-07-12 10:00:22,301 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-07-12 10:00:22,301 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 10:00:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:00:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:00:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:00:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:00:22,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:00:22,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:00:22,303 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:00:22,437 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:00:22,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:00:22,668 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:00:22,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:00:22,808 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-12 10:00:22,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:00:22 BoogieIcfgContainer [2022-07-12 10:00:22,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:00:22,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:00:22,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:00:22,813 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:00:22,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:00:21" (1/3) ... [2022-07-12 10:00:22,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7baff9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:00:22, skipping insertion in model container [2022-07-12 10:00:22,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:00:22" (2/3) ... [2022-07-12 10:00:22,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7baff9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:00:22, skipping insertion in model container [2022-07-12 10:00:22,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:00:22" (3/3) ... [2022-07-12 10:00:22,816 INFO L111 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2022-07-12 10:00:22,819 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:00:22,825 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:00:22,825 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 10:00:22,825 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:00:22,905 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-12 10:00:22,927 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 183 transitions, 390 flow [2022-07-12 10:00:22,970 INFO L129 PetriNetUnfolder]: 18/180 cut-off events. [2022-07-12 10:00:22,970 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-12 10:00:22,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 180 events. 18/180 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 357 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2022-07-12 10:00:22,985 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 183 transitions, 390 flow [2022-07-12 10:00:22,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 168 transitions, 351 flow [2022-07-12 10:00:22,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:00:23,002 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@650794a0, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7d663d8d [2022-07-12 10:00:23,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-12 10:00:23,018 INFO L129 PetriNetUnfolder]: 9/123 cut-off events. [2022-07-12 10:00:23,018 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 10:00:23,018 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:23,018 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:23,019 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:23,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:23,026 INFO L85 PathProgramCache]: Analyzing trace with hash -707274187, now seen corresponding path program 1 times [2022-07-12 10:00:23,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:23,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362177321] [2022-07-12 10:00:23,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:23,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:23,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:23,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:23,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362177321] [2022-07-12 10:00:23,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362177321] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:23,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:23,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:00:23,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794855461] [2022-07-12 10:00:23,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:23,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:00:23,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:23,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:00:23,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:00:23,287 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 183 [2022-07-12 10:00:23,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 168 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2022-07-12 10:00:23,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:23,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 183 [2022-07-12 10:00:23,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:23,581 INFO L129 PetriNetUnfolder]: 629/1791 cut-off events. [2022-07-12 10:00:23,581 INFO L130 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2022-07-12 10:00:23,601 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 1791 events. 629/1791 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12276 event pairs, 272 based on Foata normal form. 180/1804 useless extension candidates. Maximal degree in co-relation 1910. Up to 618 conditions per place. [2022-07-12 10:00:23,611 INFO L132 encePairwiseOnDemand]: 174/183 looper letters, 40 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2022-07-12 10:00:23,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 175 transitions, 455 flow [2022-07-12 10:00:23,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:00:23,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:00:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2022-07-12 10:00:23,626 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8998178506375227 [2022-07-12 10:00:23,626 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2022-07-12 10:00:23,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2022-07-12 10:00:23,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:23,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2022-07-12 10:00:23,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 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) [2022-07-12 10:00:23,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:23,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:23,643 INFO L186 Difference]: Start difference. First operand has 160 places, 168 transitions, 351 flow. Second operand 3 states and 494 transitions. [2022-07-12 10:00:23,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 175 transitions, 455 flow [2022-07-12 10:00:23,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 175 transitions, 442 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:00:23,651 INFO L242 Difference]: Finished difference. Result has 159 places, 163 transitions, 344 flow [2022-07-12 10:00:23,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=159, PETRI_TRANSITIONS=163} [2022-07-12 10:00:23,657 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, -1 predicate places. [2022-07-12 10:00:23,657 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 163 transitions, 344 flow [2022-07-12 10:00:23,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 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) [2022-07-12 10:00:23,657 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:23,658 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:23,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:00:23,658 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:23,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:23,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1151136919, now seen corresponding path program 1 times [2022-07-12 10:00:23,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:23,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924337387] [2022-07-12 10:00:23,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:23,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:23,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:23,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:23,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924337387] [2022-07-12 10:00:23,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924337387] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:23,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:23,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:00:23,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440826888] [2022-07-12 10:00:23,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:23,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:00:23,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:23,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:00:23,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:00:23,819 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-07-12 10:00:23,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 163 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2022-07-12 10:00:23,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:23,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-07-12 10:00:23,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:23,979 INFO L129 PetriNetUnfolder]: 402/1255 cut-off events. [2022-07-12 10:00:23,979 INFO L130 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-07-12 10:00:23,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 1255 events. 402/1255 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8040 event pairs, 79 based on Foata normal form. 0/1101 useless extension candidates. Maximal degree in co-relation 1163. Up to 395 conditions per place. [2022-07-12 10:00:23,987 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 26 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2022-07-12 10:00:23,988 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 172 transitions, 421 flow [2022-07-12 10:00:23,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:00:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:00:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-07-12 10:00:23,989 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-07-12 10:00:23,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-07-12 10:00:23,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-07-12 10:00:23,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:23,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-07-12 10:00:23,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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) [2022-07-12 10:00:23,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:23,993 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:23,993 INFO L186 Difference]: Start difference. First operand has 159 places, 163 transitions, 344 flow. Second operand 3 states and 500 transitions. [2022-07-12 10:00:23,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 172 transitions, 421 flow [2022-07-12 10:00:23,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 172 transitions, 419 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:00:23,999 INFO L242 Difference]: Finished difference. Result has 161 places, 163 transitions, 350 flow [2022-07-12 10:00:23,999 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=161, PETRI_TRANSITIONS=163} [2022-07-12 10:00:24,000 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2022-07-12 10:00:24,001 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 163 transitions, 350 flow [2022-07-12 10:00:24,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2022-07-12 10:00:24,002 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:24,002 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:24,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:00:24,002 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:24,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:24,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1794772677, now seen corresponding path program 1 times [2022-07-12 10:00:24,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:24,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61006209] [2022-07-12 10:00:24,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:24,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:24,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:24,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:24,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61006209] [2022-07-12 10:00:24,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61006209] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:24,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:24,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:00:24,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043991983] [2022-07-12 10:00:24,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:24,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:00:24,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:24,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:00:24,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:00:24,114 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-12 10:00:24,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 163 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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) [2022-07-12 10:00:24,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:24,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-12 10:00:24,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:24,739 INFO L129 PetriNetUnfolder]: 2951/6671 cut-off events. [2022-07-12 10:00:24,740 INFO L130 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2022-07-12 10:00:24,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10975 conditions, 6671 events. 2951/6671 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 56588 event pairs, 405 based on Foata normal form. 0/6217 useless extension candidates. Maximal degree in co-relation 7824. Up to 1682 conditions per place. [2022-07-12 10:00:24,777 INFO L132 encePairwiseOnDemand]: 176/183 looper letters, 84 selfloop transitions, 11 changer transitions 7/227 dead transitions. [2022-07-12 10:00:24,777 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 227 transitions, 695 flow [2022-07-12 10:00:24,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:00:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:00:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1070 transitions. [2022-07-12 10:00:24,781 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8352849336455894 [2022-07-12 10:00:24,781 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1070 transitions. [2022-07-12 10:00:24,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1070 transitions. [2022-07-12 10:00:24,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:24,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1070 transitions. [2022-07-12 10:00:24,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 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) [2022-07-12 10:00:24,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 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) [2022-07-12 10:00:24,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 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) [2022-07-12 10:00:24,786 INFO L186 Difference]: Start difference. First operand has 161 places, 163 transitions, 350 flow. Second operand 7 states and 1070 transitions. [2022-07-12 10:00:24,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 227 transitions, 695 flow [2022-07-12 10:00:24,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 227 transitions, 691 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:00:24,793 INFO L242 Difference]: Finished difference. Result has 168 places, 172 transitions, 408 flow [2022-07-12 10:00:24,793 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=168, PETRI_TRANSITIONS=172} [2022-07-12 10:00:24,795 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 8 predicate places. [2022-07-12 10:00:24,795 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 172 transitions, 408 flow [2022-07-12 10:00:24,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 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) [2022-07-12 10:00:24,796 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:24,796 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:24,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:00:24,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:24,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash 54936445, now seen corresponding path program 1 times [2022-07-12 10:00:24,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:24,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488846984] [2022-07-12 10:00:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:24,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:24,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:24,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:24,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488846984] [2022-07-12 10:00:24,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488846984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:24,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:24,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:00:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19569281] [2022-07-12 10:00:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:24,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:00:24,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:24,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:00:24,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:00:24,944 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 183 [2022-07-12 10:00:24,945 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 172 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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) [2022-07-12 10:00:24,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:24,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 183 [2022-07-12 10:00:24,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:25,286 INFO L129 PetriNetUnfolder]: 1220/3032 cut-off events. [2022-07-12 10:00:25,286 INFO L130 PetriNetUnfolder]: For 386/397 co-relation queries the response was YES. [2022-07-12 10:00:25,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 3032 events. 1220/3032 cut-off events. For 386/397 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 24284 event pairs, 241 based on Foata normal form. 128/3023 useless extension candidates. Maximal degree in co-relation 5210. Up to 1544 conditions per place. [2022-07-12 10:00:25,304 INFO L132 encePairwiseOnDemand]: 165/183 looper letters, 95 selfloop transitions, 31 changer transitions 0/253 dead transitions. [2022-07-12 10:00:25,305 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 253 transitions, 868 flow [2022-07-12 10:00:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:00:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:00:25,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1198 transitions. [2022-07-12 10:00:25,307 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8183060109289617 [2022-07-12 10:00:25,307 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1198 transitions. [2022-07-12 10:00:25,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1198 transitions. [2022-07-12 10:00:25,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:25,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1198 transitions. [2022-07-12 10:00:25,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.75) internal successors, (1198), 8 states have internal predecessors, (1198), 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) [2022-07-12 10:00:25,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 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) [2022-07-12 10:00:25,315 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 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) [2022-07-12 10:00:25,316 INFO L186 Difference]: Start difference. First operand has 168 places, 172 transitions, 408 flow. Second operand 8 states and 1198 transitions. [2022-07-12 10:00:25,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 253 transitions, 868 flow [2022-07-12 10:00:25,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 253 transitions, 868 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:00:25,323 INFO L242 Difference]: Finished difference. Result has 181 places, 205 transitions, 655 flow [2022-07-12 10:00:25,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=655, PETRI_PLACES=181, PETRI_TRANSITIONS=205} [2022-07-12 10:00:25,326 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 21 predicate places. [2022-07-12 10:00:25,327 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 205 transitions, 655 flow [2022-07-12 10:00:25,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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) [2022-07-12 10:00:25,327 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:25,328 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:25,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:00:25,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:25,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:25,328 INFO L85 PathProgramCache]: Analyzing trace with hash 911682777, now seen corresponding path program 2 times [2022-07-12 10:00:25,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:25,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252446705] [2022-07-12 10:00:25,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:25,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:25,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:25,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252446705] [2022-07-12 10:00:25,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252446705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:25,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:25,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:00:25,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47221945] [2022-07-12 10:00:25,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:25,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:00:25,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:25,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:00:25,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:00:25,448 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 183 [2022-07-12 10:00:25,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 205 transitions, 655 flow. Second operand has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-07-12 10:00:25,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:25,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 183 [2022-07-12 10:00:25,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:26,136 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 102#L786-4true, Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 21#L739true, Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, 92#L777true]) [2022-07-12 10:00:26,137 INFO L384 tUnfolder$Statistics]: this new event has 84 ancestors and is not cut-off event [2022-07-12 10:00:26,137 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is not cut-off event [2022-07-12 10:00:26,137 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is not cut-off event [2022-07-12 10:00:26,137 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is not cut-off event [2022-07-12 10:00:26,170 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [111#L739-3true, 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 102#L786-4true, Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 92#L777true, 204#true]) [2022-07-12 10:00:26,171 INFO L384 tUnfolder$Statistics]: this new event has 85 ancestors and is not cut-off event [2022-07-12 10:00:26,171 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-07-12 10:00:26,171 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-07-12 10:00:26,171 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-07-12 10:00:26,226 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), 85#L787-1true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 21#L739true, Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, 92#L777true]) [2022-07-12 10:00:26,227 INFO L384 tUnfolder$Statistics]: this new event has 87 ancestors and is not cut-off event [2022-07-12 10:00:26,227 INFO L387 tUnfolder$Statistics]: existing Event has 87 ancestors and is not cut-off event [2022-07-12 10:00:26,227 INFO L387 tUnfolder$Statistics]: existing Event has 87 ancestors and is not cut-off event [2022-07-12 10:00:26,227 INFO L387 tUnfolder$Statistics]: existing Event has 87 ancestors and is not cut-off event [2022-07-12 10:00:26,257 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [111#L739-3true, 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), 85#L787-1true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 92#L777true, 204#true]) [2022-07-12 10:00:26,257 INFO L384 tUnfolder$Statistics]: this new event has 88 ancestors and is not cut-off event [2022-07-12 10:00:26,257 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is not cut-off event [2022-07-12 10:00:26,257 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is not cut-off event [2022-07-12 10:00:26,258 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is not cut-off event [2022-07-12 10:00:26,412 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 92#L777true, 204#true]) [2022-07-12 10:00:26,413 INFO L384 tUnfolder$Statistics]: this new event has 91 ancestors and is not cut-off event [2022-07-12 10:00:26,413 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is not cut-off event [2022-07-12 10:00:26,413 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is not cut-off event [2022-07-12 10:00:26,413 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is not cut-off event [2022-07-12 10:00:26,477 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [120#L788-1true, 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, 92#L777true]) [2022-07-12 10:00:26,477 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is not cut-off event [2022-07-12 10:00:26,477 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is not cut-off event [2022-07-12 10:00:26,477 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is not cut-off event [2022-07-12 10:00:26,477 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is not cut-off event [2022-07-12 10:00:26,550 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), 88#L788-2true, Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 92#L777true, 204#true]) [2022-07-12 10:00:26,551 INFO L384 tUnfolder$Statistics]: this new event has 96 ancestors and is not cut-off event [2022-07-12 10:00:26,551 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is not cut-off event [2022-07-12 10:00:26,551 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is not cut-off event [2022-07-12 10:00:26,551 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is not cut-off event [2022-07-12 10:00:26,636 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [72#L789-1true, 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, 92#L777true]) [2022-07-12 10:00:26,636 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is not cut-off event [2022-07-12 10:00:26,636 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is not cut-off event [2022-07-12 10:00:26,637 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is not cut-off event [2022-07-12 10:00:26,637 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is not cut-off event [2022-07-12 10:00:26,725 INFO L129 PetriNetUnfolder]: 5633/11975 cut-off events. [2022-07-12 10:00:26,725 INFO L130 PetriNetUnfolder]: For 11615/11803 co-relation queries the response was YES. [2022-07-12 10:00:26,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28415 conditions, 11975 events. 5633/11975 cut-off events. For 11615/11803 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 111635 event pairs, 1142 based on Foata normal form. 142/11455 useless extension candidates. Maximal degree in co-relation 27823. Up to 3359 conditions per place. [2022-07-12 10:00:26,801 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 175 selfloop transitions, 18 changer transitions 10/335 dead transitions. [2022-07-12 10:00:26,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 335 transitions, 1649 flow [2022-07-12 10:00:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:00:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:00:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1381 transitions. [2022-07-12 10:00:26,804 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7546448087431694 [2022-07-12 10:00:26,804 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1381 transitions. [2022-07-12 10:00:26,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1381 transitions. [2022-07-12 10:00:26,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:26,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1381 transitions. [2022-07-12 10:00:26,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 138.1) internal successors, (1381), 10 states have internal predecessors, (1381), 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) [2022-07-12 10:00:26,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 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) [2022-07-12 10:00:26,809 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 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) [2022-07-12 10:00:26,809 INFO L186 Difference]: Start difference. First operand has 181 places, 205 transitions, 655 flow. Second operand 10 states and 1381 transitions. [2022-07-12 10:00:26,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 335 transitions, 1649 flow [2022-07-12 10:00:26,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 335 transitions, 1649 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:00:26,849 INFO L242 Difference]: Finished difference. Result has 195 places, 221 transitions, 771 flow [2022-07-12 10:00:26,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=771, PETRI_PLACES=195, PETRI_TRANSITIONS=221} [2022-07-12 10:00:26,850 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 35 predicate places. [2022-07-12 10:00:26,851 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 221 transitions, 771 flow [2022-07-12 10:00:26,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 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) [2022-07-12 10:00:26,851 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:26,851 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:26,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:00:26,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:26,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:26,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2053644825, now seen corresponding path program 1 times [2022-07-12 10:00:26,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:26,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851249584] [2022-07-12 10:00:26,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:26,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:26,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:26,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851249584] [2022-07-12 10:00:26,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851249584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:26,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:26,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:00:26,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459896107] [2022-07-12 10:00:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:26,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:00:26,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:00:26,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:00:26,956 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 183 [2022-07-12 10:00:26,957 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 221 transitions, 771 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:00:26,957 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:26,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 183 [2022-07-12 10:00:26,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:27,607 INFO L129 PetriNetUnfolder]: 2049/5079 cut-off events. [2022-07-12 10:00:27,608 INFO L130 PetriNetUnfolder]: For 5450/5514 co-relation queries the response was YES. [2022-07-12 10:00:27,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 5079 events. 2049/5079 cut-off events. For 5450/5514 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 45420 event pairs, 226 based on Foata normal form. 97/4971 useless extension candidates. Maximal degree in co-relation 12429. Up to 1713 conditions per place. [2022-07-12 10:00:27,690 INFO L132 encePairwiseOnDemand]: 162/183 looper letters, 120 selfloop transitions, 37 changer transitions 0/298 dead transitions. [2022-07-12 10:00:27,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 298 transitions, 1417 flow [2022-07-12 10:00:27,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:00:27,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:00:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1468 transitions. [2022-07-12 10:00:27,696 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8021857923497268 [2022-07-12 10:00:27,696 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1468 transitions. [2022-07-12 10:00:27,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1468 transitions. [2022-07-12 10:00:27,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:27,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1468 transitions. [2022-07-12 10:00:27,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.8) internal successors, (1468), 10 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:00:27,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 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) [2022-07-12 10:00:27,702 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 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) [2022-07-12 10:00:27,703 INFO L186 Difference]: Start difference. First operand has 195 places, 221 transitions, 771 flow. Second operand 10 states and 1468 transitions. [2022-07-12 10:00:27,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 298 transitions, 1417 flow [2022-07-12 10:00:27,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 298 transitions, 1417 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-12 10:00:27,717 INFO L242 Difference]: Finished difference. Result has 209 places, 237 transitions, 1010 flow [2022-07-12 10:00:27,717 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1010, PETRI_PLACES=209, PETRI_TRANSITIONS=237} [2022-07-12 10:00:27,719 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 49 predicate places. [2022-07-12 10:00:27,719 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 237 transitions, 1010 flow [2022-07-12 10:00:27,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:00:27,720 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:27,720 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:27,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:00:27,720 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:27,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:27,721 INFO L85 PathProgramCache]: Analyzing trace with hash 928253015, now seen corresponding path program 1 times [2022-07-12 10:00:27,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:27,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432040212] [2022-07-12 10:00:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:27,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:27,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:27,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:27,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432040212] [2022-07-12 10:00:27,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432040212] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:27,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:27,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:00:27,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318344222] [2022-07-12 10:00:27,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:27,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:00:27,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:27,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:00:27,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:00:27,765 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-07-12 10:00:27,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 237 transitions, 1010 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2022-07-12 10:00:27,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:27,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-07-12 10:00:27,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:28,016 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([850] L771-2-->L771-3: Formula: (= v_~ctr2~0_19 (+ |v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3| 1)) InVars {qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|} OutVars{qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|, ~ctr2~0=v_~ctr2~0_19} AuxVars[] AssignedVars[~ctr2~0][213], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 165#L771-3true, 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-12 10:00:28,016 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-07-12 10:00:28,016 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,016 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,017 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,017 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([851] L772-1-->L772-2: Formula: (= (+ |v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3| 1) v_~ctr1~0_20) InVars {qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} OutVars{~ctr1~0=v_~ctr1~0_20, qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} AuxVars[] AssignedVars[~ctr1~0][212], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), 50#L772-2true, Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-12 10:00:28,017 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-07-12 10:00:28,017 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,017 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,017 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,090 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([851] L772-1-->L772-2: Formula: (= (+ |v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3| 1) v_~ctr1~0_20) InVars {qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} OutVars{~ctr1~0=v_~ctr1~0_20, qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} AuxVars[] AssignedVars[~ctr1~0][212], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 50#L772-2true, Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-12 10:00:28,090 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-12 10:00:28,090 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,090 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,090 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,090 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-12 10:00:28,091 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([850] L771-2-->L771-3: Formula: (= v_~ctr2~0_19 (+ |v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3| 1)) InVars {qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|} OutVars{qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|, ~ctr2~0=v_~ctr2~0_19} AuxVars[] AssignedVars[~ctr2~0][213], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 165#L771-3true, Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-12 10:00:28,091 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-12 10:00:28,091 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,091 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,091 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-12 10:00:28,091 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,144 INFO L129 PetriNetUnfolder]: 1439/4562 cut-off events. [2022-07-12 10:00:28,144 INFO L130 PetriNetUnfolder]: For 5492/5750 co-relation queries the response was YES. [2022-07-12 10:00:28,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10920 conditions, 4562 events. 1439/4562 cut-off events. For 5492/5750 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 43064 event pairs, 311 based on Foata normal form. 160/4405 useless extension candidates. Maximal degree in co-relation 10587. Up to 1193 conditions per place. [2022-07-12 10:00:28,187 INFO L132 encePairwiseOnDemand]: 181/183 looper letters, 73 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2022-07-12 10:00:28,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 258 transitions, 1286 flow [2022-07-12 10:00:28,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:00:28,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:00:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-07-12 10:00:28,189 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-07-12 10:00:28,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-07-12 10:00:28,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-07-12 10:00:28,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:28,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-07-12 10:00:28,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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) [2022-07-12 10:00:28,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:28,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:28,192 INFO L186 Difference]: Start difference. First operand has 209 places, 237 transitions, 1010 flow. Second operand 3 states and 500 transitions. [2022-07-12 10:00:28,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 258 transitions, 1286 flow [2022-07-12 10:00:28,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 258 transitions, 1263 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:00:28,212 INFO L242 Difference]: Finished difference. Result has 208 places, 237 transitions, 994 flow [2022-07-12 10:00:28,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=994, PETRI_PLACES=208, PETRI_TRANSITIONS=237} [2022-07-12 10:00:28,213 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 48 predicate places. [2022-07-12 10:00:28,213 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 237 transitions, 994 flow [2022-07-12 10:00:28,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 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) [2022-07-12 10:00:28,213 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:28,213 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:28,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:00:28,214 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:28,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash 545156572, now seen corresponding path program 1 times [2022-07-12 10:00:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:28,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586822802] [2022-07-12 10:00:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:28,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:28,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:28,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:28,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586822802] [2022-07-12 10:00:28,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586822802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:28,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:28,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 10:00:28,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678290282] [2022-07-12 10:00:28,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:28,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:00:28,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:28,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:00:28,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:00:28,248 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-07-12 10:00:28,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 237 transitions, 994 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2022-07-12 10:00:28,249 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:28,249 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-07-12 10:00:28,249 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:28,658 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([851] L772-1-->L772-2: Formula: (= (+ |v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3| 1) v_~ctr1~0_20) InVars {qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} OutVars{~ctr1~0=v_~ctr1~0_20, qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} AuxVars[] AssignedVars[~ctr1~0][212], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), 50#L772-2true, Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 272#(= ~readerprogress2~0 2), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-12 10:00:28,658 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-12 10:00:28,658 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-12 10:00:28,658 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,658 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,658 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([850] L771-2-->L771-3: Formula: (= v_~ctr2~0_19 (+ |v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3| 1)) InVars {qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|} OutVars{qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|, ~ctr2~0=v_~ctr2~0_19} AuxVars[] AssignedVars[~ctr2~0][213], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 165#L771-3true, 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 272#(= ~readerprogress2~0 2), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-12 10:00:28,658 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-12 10:00:28,658 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-12 10:00:28,658 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,658 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-12 10:00:28,714 INFO L129 PetriNetUnfolder]: 1515/4859 cut-off events. [2022-07-12 10:00:28,714 INFO L130 PetriNetUnfolder]: For 5280/5543 co-relation queries the response was YES. [2022-07-12 10:00:28,738 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11319 conditions, 4859 events. 1515/4859 cut-off events. For 5280/5543 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 46821 event pairs, 203 based on Foata normal form. 107/4590 useless extension candidates. Maximal degree in co-relation 10970. Up to 1118 conditions per place. [2022-07-12 10:00:28,749 INFO L132 encePairwiseOnDemand]: 181/183 looper letters, 70 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2022-07-12 10:00:28,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 258 transitions, 1265 flow [2022-07-12 10:00:28,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:00:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:00:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-07-12 10:00:28,751 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-07-12 10:00:28,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-07-12 10:00:28,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-07-12 10:00:28,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:28,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-07-12 10:00:28,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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) [2022-07-12 10:00:28,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:28,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:28,754 INFO L186 Difference]: Start difference. First operand has 208 places, 237 transitions, 994 flow. Second operand 3 states and 500 transitions. [2022-07-12 10:00:28,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 258 transitions, 1265 flow [2022-07-12 10:00:28,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 258 transitions, 1264 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:00:28,771 INFO L242 Difference]: Finished difference. Result has 210 places, 237 transitions, 998 flow [2022-07-12 10:00:28,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=998, PETRI_PLACES=210, PETRI_TRANSITIONS=237} [2022-07-12 10:00:28,772 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 50 predicate places. [2022-07-12 10:00:28,772 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 237 transitions, 998 flow [2022-07-12 10:00:28,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 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) [2022-07-12 10:00:28,773 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:28,773 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:28,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:00:28,773 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:28,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:28,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1402509722, now seen corresponding path program 1 times [2022-07-12 10:00:28,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:28,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570693548] [2022-07-12 10:00:28,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:28,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:28,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:28,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:28,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:28,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570693548] [2022-07-12 10:00:28,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570693548] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:28,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:28,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:00:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862289861] [2022-07-12 10:00:28,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:28,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:00:28,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:28,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:00:28,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:00:28,803 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 183 [2022-07-12 10:00:28,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 237 transitions, 998 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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) [2022-07-12 10:00:28,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:28,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 183 [2022-07-12 10:00:28,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:29,222 INFO L129 PetriNetUnfolder]: 1766/5380 cut-off events. [2022-07-12 10:00:29,222 INFO L130 PetriNetUnfolder]: For 6303/6533 co-relation queries the response was YES. [2022-07-12 10:00:29,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12179 conditions, 5380 events. 1766/5380 cut-off events. For 6303/6533 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 50298 event pairs, 316 based on Foata normal form. 40/4971 useless extension candidates. Maximal degree in co-relation 11793. Up to 1261 conditions per place. [2022-07-12 10:00:29,250 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 49 selfloop transitions, 2 changer transitions 43/237 dead transitions. [2022-07-12 10:00:29,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 237 transitions, 1140 flow [2022-07-12 10:00:29,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:00:29,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:00:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-07-12 10:00:29,252 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8943533697632058 [2022-07-12 10:00:29,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-07-12 10:00:29,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-07-12 10:00:29,252 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:29,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-07-12 10:00:29,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 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) [2022-07-12 10:00:29,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:29,254 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:29,254 INFO L186 Difference]: Start difference. First operand has 210 places, 237 transitions, 998 flow. Second operand 3 states and 491 transitions. [2022-07-12 10:00:29,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 237 transitions, 1140 flow [2022-07-12 10:00:29,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 237 transitions, 1131 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-12 10:00:29,270 INFO L242 Difference]: Finished difference. Result has 202 places, 181 transitions, 675 flow [2022-07-12 10:00:29,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=675, PETRI_PLACES=202, PETRI_TRANSITIONS=181} [2022-07-12 10:00:29,271 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 42 predicate places. [2022-07-12 10:00:29,271 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 181 transitions, 675 flow [2022-07-12 10:00:29,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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) [2022-07-12 10:00:29,271 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:29,271 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:29,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:00:29,272 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:29,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1806226238, now seen corresponding path program 1 times [2022-07-12 10:00:29,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:29,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140024060] [2022-07-12 10:00:29,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:29,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:29,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:29,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:29,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140024060] [2022-07-12 10:00:29,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140024060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:29,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:29,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:00:29,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311433073] [2022-07-12 10:00:29,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:29,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:00:29,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:29,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:00:29,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:00:29,308 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 183 [2022-07-12 10:00:29,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 181 transitions, 675 flow. Second operand has 5 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 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) [2022-07-12 10:00:29,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:29,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 183 [2022-07-12 10:00:29,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:29,657 INFO L129 PetriNetUnfolder]: 887/2956 cut-off events. [2022-07-12 10:00:29,657 INFO L130 PetriNetUnfolder]: For 2616/2661 co-relation queries the response was YES. [2022-07-12 10:00:29,670 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6793 conditions, 2956 events. 887/2956 cut-off events. For 2616/2661 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26574 event pairs, 242 based on Foata normal form. 13/2798 useless extension candidates. Maximal degree in co-relation 6524. Up to 840 conditions per place. [2022-07-12 10:00:29,678 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 69 selfloop transitions, 25 changer transitions 5/236 dead transitions. [2022-07-12 10:00:29,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 236 transitions, 1146 flow [2022-07-12 10:00:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:00:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:00:29,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1118 transitions. [2022-07-12 10:00:29,682 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8727556596409055 [2022-07-12 10:00:29,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1118 transitions. [2022-07-12 10:00:29,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1118 transitions. [2022-07-12 10:00:29,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:29,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1118 transitions. [2022-07-12 10:00:29,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.71428571428572) internal successors, (1118), 7 states have internal predecessors, (1118), 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) [2022-07-12 10:00:29,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 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) [2022-07-12 10:00:29,688 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 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) [2022-07-12 10:00:29,688 INFO L186 Difference]: Start difference. First operand has 202 places, 181 transitions, 675 flow. Second operand 7 states and 1118 transitions. [2022-07-12 10:00:29,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 236 transitions, 1146 flow [2022-07-12 10:00:29,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 236 transitions, 1096 flow, removed 19 selfloop flow, removed 7 redundant places. [2022-07-12 10:00:29,703 INFO L242 Difference]: Finished difference. Result has 193 places, 196 transitions, 847 flow [2022-07-12 10:00:29,703 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=847, PETRI_PLACES=193, PETRI_TRANSITIONS=196} [2022-07-12 10:00:29,704 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 33 predicate places. [2022-07-12 10:00:29,704 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 196 transitions, 847 flow [2022-07-12 10:00:29,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 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) [2022-07-12 10:00:29,704 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:29,704 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:29,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:00:29,705 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:29,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash 2048247070, now seen corresponding path program 1 times [2022-07-12 10:00:29,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:29,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414104943] [2022-07-12 10:00:29,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:29,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:29,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:29,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414104943] [2022-07-12 10:00:29,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414104943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:29,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:29,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:00:29,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160129073] [2022-07-12 10:00:29,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:29,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:00:29,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:29,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:00:29,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:00:29,731 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 183 [2022-07-12 10:00:29,732 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 196 transitions, 847 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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) [2022-07-12 10:00:29,732 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:29,732 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 183 [2022-07-12 10:00:29,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:29,946 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([842] L771-->L771-1: Formula: (<= v_~idx~0_5 0) InVars {~idx~0=v_~idx~0_5} OutVars{~idx~0=v_~idx~0_5} AuxVars[] AssignedVars[][145], [111#L739-3true, 189#true, Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), 102#L786-4true, Black: 191#(= ~readerprogress2~0 0), 54#L758-3true, 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 226#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0), 272#(= ~readerprogress2~0 2), 204#true, Black: 281#(= ~ctr2~0 0), Black: 283#(<= 1 ~ctr2~0), Black: 282#(= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0), Black: 287#(and (= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0) (<= 1 ~ctr2~0)), 80#L771-1true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 294#true, Black: 186#(= ~readerprogress1~0 0), 279#true]) [2022-07-12 10:00:29,946 INFO L384 tUnfolder$Statistics]: this new event has 90 ancestors and is cut-off event [2022-07-12 10:00:29,946 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-12 10:00:29,947 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-12 10:00:29,947 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-07-12 10:00:29,995 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([842] L771-->L771-1: Formula: (<= v_~idx~0_5 0) InVars {~idx~0=v_~idx~0_5} OutVars{~idx~0=v_~idx~0_5} AuxVars[] AssignedVars[][145], [189#true, Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 191#(= ~readerprogress2~0 0), 109#L787-2true, 54#L758-3true, 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 226#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0), 272#(= ~readerprogress2~0 2), 204#true, Black: 281#(= ~ctr2~0 0), Black: 283#(<= 1 ~ctr2~0), Black: 282#(= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0), Black: 287#(and (= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0) (<= 1 ~ctr2~0)), 80#L771-1true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 294#true, Black: 186#(= ~readerprogress1~0 0), 279#true]) [2022-07-12 10:00:29,995 INFO L384 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-07-12 10:00:29,996 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-07-12 10:00:29,996 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-07-12 10:00:29,996 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-07-12 10:00:30,029 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([842] L771-->L771-1: Formula: (<= v_~idx~0_5 0) InVars {~idx~0=v_~idx~0_5} OutVars{~idx~0=v_~idx~0_5} AuxVars[] AssignedVars[][145], [189#true, Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 88#L788-2true, Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 191#(= ~readerprogress2~0 0), 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 226#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0), 272#(= ~readerprogress2~0 2), 204#true, Black: 281#(= ~ctr2~0 0), Black: 283#(<= 1 ~ctr2~0), Black: 282#(= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0), Black: 287#(and (= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0) (<= 1 ~ctr2~0)), 80#L771-1true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 294#true, Black: 186#(= ~readerprogress1~0 0), 279#true]) [2022-07-12 10:00:30,030 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is cut-off event [2022-07-12 10:00:30,030 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-07-12 10:00:30,030 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-12 10:00:30,030 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-12 10:00:30,049 INFO L129 PetriNetUnfolder]: 805/2891 cut-off events. [2022-07-12 10:00:30,049 INFO L130 PetriNetUnfolder]: For 4702/4780 co-relation queries the response was YES. [2022-07-12 10:00:30,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7111 conditions, 2891 events. 805/2891 cut-off events. For 4702/4780 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 25183 event pairs, 190 based on Foata normal form. 13/2761 useless extension candidates. Maximal degree in co-relation 6838. Up to 741 conditions per place. [2022-07-12 10:00:30,066 INFO L132 encePairwiseOnDemand]: 181/183 looper letters, 60 selfloop transitions, 1 changer transitions 2/210 dead transitions. [2022-07-12 10:00:30,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 210 transitions, 1079 flow [2022-07-12 10:00:30,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:00:30,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-12 10:00:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2022-07-12 10:00:30,068 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-07-12 10:00:30,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2022-07-12 10:00:30,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2022-07-12 10:00:30,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:30,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2022-07-12 10:00:30,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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) [2022-07-12 10:00:30,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:30,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 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) [2022-07-12 10:00:30,070 INFO L186 Difference]: Start difference. First operand has 193 places, 196 transitions, 847 flow. Second operand 3 states and 488 transitions. [2022-07-12 10:00:30,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 210 transitions, 1079 flow [2022-07-12 10:00:30,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 210 transitions, 1073 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-12 10:00:30,081 INFO L242 Difference]: Finished difference. Result has 194 places, 193 transitions, 837 flow [2022-07-12 10:00:30,081 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=837, PETRI_PLACES=194, PETRI_TRANSITIONS=193} [2022-07-12 10:00:30,082 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 34 predicate places. [2022-07-12 10:00:30,082 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 193 transitions, 837 flow [2022-07-12 10:00:30,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 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) [2022-07-12 10:00:30,082 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:30,083 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:30,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:00:30,083 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:30,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:30,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1693078370, now seen corresponding path program 1 times [2022-07-12 10:00:30,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:30,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105264302] [2022-07-12 10:00:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:30,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:30,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:30,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:30,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105264302] [2022-07-12 10:00:30,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105264302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:30,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:30,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:00:30,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613094695] [2022-07-12 10:00:30,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:30,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:00:30,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:30,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:00:30,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:00:30,195 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-12 10:00:30,196 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 193 transitions, 837 flow. Second operand has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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) [2022-07-12 10:00:30,196 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:30,196 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-12 10:00:30,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:30,956 INFO L129 PetriNetUnfolder]: 1864/4561 cut-off events. [2022-07-12 10:00:30,956 INFO L130 PetriNetUnfolder]: For 9546/9625 co-relation queries the response was YES. [2022-07-12 10:00:30,977 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13806 conditions, 4561 events. 1864/4561 cut-off events. For 9546/9625 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 38478 event pairs, 388 based on Foata normal form. 60/4501 useless extension candidates. Maximal degree in co-relation 13390. Up to 1855 conditions per place. [2022-07-12 10:00:30,985 INFO L132 encePairwiseOnDemand]: 167/183 looper letters, 133 selfloop transitions, 52 changer transitions 9/304 dead transitions. [2022-07-12 10:00:30,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 304 transitions, 1959 flow [2022-07-12 10:00:30,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:00:30,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:00:30,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1493 transitions. [2022-07-12 10:00:30,989 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.741679085941381 [2022-07-12 10:00:30,989 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1493 transitions. [2022-07-12 10:00:30,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1493 transitions. [2022-07-12 10:00:30,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:30,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1493 transitions. [2022-07-12 10:00:30,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 135.72727272727272) internal successors, (1493), 11 states have internal predecessors, (1493), 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) [2022-07-12 10:00:30,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 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) [2022-07-12 10:00:30,995 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 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) [2022-07-12 10:00:30,995 INFO L186 Difference]: Start difference. First operand has 194 places, 193 transitions, 837 flow. Second operand 11 states and 1493 transitions. [2022-07-12 10:00:30,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 304 transitions, 1959 flow [2022-07-12 10:00:31,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 304 transitions, 1958 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-12 10:00:31,022 INFO L242 Difference]: Finished difference. Result has 207 places, 223 transitions, 1342 flow [2022-07-12 10:00:31,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1342, PETRI_PLACES=207, PETRI_TRANSITIONS=223} [2022-07-12 10:00:31,024 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 47 predicate places. [2022-07-12 10:00:31,024 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 223 transitions, 1342 flow [2022-07-12 10:00:31,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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) [2022-07-12 10:00:31,024 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:31,025 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:31,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:00:31,025 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:31,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash 523705238, now seen corresponding path program 2 times [2022-07-12 10:00:31,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:31,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076915066] [2022-07-12 10:00:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:31,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:31,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:31,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:31,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076915066] [2022-07-12 10:00:31,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076915066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:31,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:31,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:00:31,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170613243] [2022-07-12 10:00:31,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:31,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:00:31,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:31,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:00:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:00:31,135 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-12 10:00:31,136 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 223 transitions, 1342 flow. Second operand has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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) [2022-07-12 10:00:31,136 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:31,136 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-12 10:00:31,136 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:31,951 INFO L129 PetriNetUnfolder]: 1929/4784 cut-off events. [2022-07-12 10:00:31,951 INFO L130 PetriNetUnfolder]: For 14272/14353 co-relation queries the response was YES. [2022-07-12 10:00:31,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15895 conditions, 4784 events. 1929/4784 cut-off events. For 14272/14353 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 41093 event pairs, 452 based on Foata normal form. 66/4701 useless extension candidates. Maximal degree in co-relation 15435. Up to 1799 conditions per place. [2022-07-12 10:00:31,983 INFO L132 encePairwiseOnDemand]: 166/183 looper letters, 133 selfloop transitions, 75 changer transitions 33/351 dead transitions. [2022-07-12 10:00:31,983 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 351 transitions, 2826 flow [2022-07-12 10:00:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:00:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-12 10:00:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1753 transitions. [2022-07-12 10:00:31,987 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7368642286675073 [2022-07-12 10:00:31,987 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1753 transitions. [2022-07-12 10:00:31,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1753 transitions. [2022-07-12 10:00:31,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:31,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1753 transitions. [2022-07-12 10:00:31,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 134.84615384615384) internal successors, (1753), 13 states have internal predecessors, (1753), 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) [2022-07-12 10:00:31,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 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) [2022-07-12 10:00:31,993 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 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) [2022-07-12 10:00:31,993 INFO L186 Difference]: Start difference. First operand has 207 places, 223 transitions, 1342 flow. Second operand 13 states and 1753 transitions. [2022-07-12 10:00:31,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 351 transitions, 2826 flow [2022-07-12 10:00:32,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 351 transitions, 2749 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-07-12 10:00:32,036 INFO L242 Difference]: Finished difference. Result has 219 places, 243 transitions, 1773 flow [2022-07-12 10:00:32,037 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1773, PETRI_PLACES=219, PETRI_TRANSITIONS=243} [2022-07-12 10:00:32,037 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 59 predicate places. [2022-07-12 10:00:32,037 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 243 transitions, 1773 flow [2022-07-12 10:00:32,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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) [2022-07-12 10:00:32,038 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:32,038 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:32,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:00:32,038 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:32,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash 131143178, now seen corresponding path program 1 times [2022-07-12 10:00:32,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:32,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287079064] [2022-07-12 10:00:32,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:32,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:32,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:32,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:32,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287079064] [2022-07-12 10:00:32,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287079064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:32,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:32,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:00:32,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489293270] [2022-07-12 10:00:32,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:32,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:00:32,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:32,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:00:32,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:00:32,162 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-12 10:00:32,172 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 243 transitions, 1773 flow. Second operand has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 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) [2022-07-12 10:00:32,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:32,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-12 10:00:32,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:32,863 INFO L129 PetriNetUnfolder]: 1659/4294 cut-off events. [2022-07-12 10:00:32,864 INFO L130 PetriNetUnfolder]: For 17339/17459 co-relation queries the response was YES. [2022-07-12 10:00:32,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14836 conditions, 4294 events. 1659/4294 cut-off events. For 17339/17459 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 37048 event pairs, 456 based on Foata normal form. 91/4239 useless extension candidates. Maximal degree in co-relation 14400. Up to 1720 conditions per place. [2022-07-12 10:00:32,883 INFO L132 encePairwiseOnDemand]: 169/183 looper letters, 143 selfloop transitions, 65 changer transitions 7/325 dead transitions. [2022-07-12 10:00:32,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 325 transitions, 2692 flow [2022-07-12 10:00:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:00:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:00:32,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1861 transitions. [2022-07-12 10:00:32,886 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7263856362217018 [2022-07-12 10:00:32,887 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1861 transitions. [2022-07-12 10:00:32,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1861 transitions. [2022-07-12 10:00:32,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:32,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1861 transitions. [2022-07-12 10:00:32,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 132.92857142857142) internal successors, (1861), 14 states have internal predecessors, (1861), 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) [2022-07-12 10:00:32,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 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) [2022-07-12 10:00:32,893 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 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) [2022-07-12 10:00:32,893 INFO L186 Difference]: Start difference. First operand has 219 places, 243 transitions, 1773 flow. Second operand 14 states and 1861 transitions. [2022-07-12 10:00:32,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 325 transitions, 2692 flow [2022-07-12 10:00:32,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 325 transitions, 2638 flow, removed 23 selfloop flow, removed 3 redundant places. [2022-07-12 10:00:32,940 INFO L242 Difference]: Finished difference. Result has 232 places, 252 transitions, 1946 flow [2022-07-12 10:00:32,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1946, PETRI_PLACES=232, PETRI_TRANSITIONS=252} [2022-07-12 10:00:32,941 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 72 predicate places. [2022-07-12 10:00:32,941 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 252 transitions, 1946 flow [2022-07-12 10:00:32,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 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) [2022-07-12 10:00:32,942 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:32,942 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:32,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:00:32,942 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:32,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:32,943 INFO L85 PathProgramCache]: Analyzing trace with hash 804789034, now seen corresponding path program 3 times [2022-07-12 10:00:32,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:32,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319651166] [2022-07-12 10:00:32,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:32,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:33,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:33,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:33,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319651166] [2022-07-12 10:00:33,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319651166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:33,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:33,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:00:33,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519553216] [2022-07-12 10:00:33,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:33,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:00:33,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:33,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:00:33,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:00:33,027 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-12 10:00:33,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 252 transitions, 1946 flow. Second operand has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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) [2022-07-12 10:00:33,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:33,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-12 10:00:33,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:33,664 INFO L129 PetriNetUnfolder]: 1591/4144 cut-off events. [2022-07-12 10:00:33,664 INFO L130 PetriNetUnfolder]: For 17855/17994 co-relation queries the response was YES. [2022-07-12 10:00:33,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14437 conditions, 4144 events. 1591/4144 cut-off events. For 17855/17994 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 35697 event pairs, 427 based on Foata normal form. 119/4130 useless extension candidates. Maximal degree in co-relation 14034. Up to 1387 conditions per place. [2022-07-12 10:00:33,695 INFO L132 encePairwiseOnDemand]: 166/183 looper letters, 157 selfloop transitions, 74 changer transitions 14/355 dead transitions. [2022-07-12 10:00:33,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 355 transitions, 3115 flow [2022-07-12 10:00:33,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:00:33,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:00:33,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1633 transitions. [2022-07-12 10:00:33,700 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7436247723132969 [2022-07-12 10:00:33,700 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1633 transitions. [2022-07-12 10:00:33,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1633 transitions. [2022-07-12 10:00:33,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:33,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1633 transitions. [2022-07-12 10:00:33,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.08333333333334) internal successors, (1633), 12 states have internal predecessors, (1633), 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) [2022-07-12 10:00:33,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:33,706 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:33,706 INFO L186 Difference]: Start difference. First operand has 232 places, 252 transitions, 1946 flow. Second operand 12 states and 1633 transitions. [2022-07-12 10:00:33,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 355 transitions, 3115 flow [2022-07-12 10:00:33,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 355 transitions, 3050 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:00:33,757 INFO L242 Difference]: Finished difference. Result has 242 places, 260 transitions, 2212 flow [2022-07-12 10:00:33,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2212, PETRI_PLACES=242, PETRI_TRANSITIONS=260} [2022-07-12 10:00:33,757 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 82 predicate places. [2022-07-12 10:00:33,757 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 260 transitions, 2212 flow [2022-07-12 10:00:33,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 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) [2022-07-12 10:00:33,758 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:33,758 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:33,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:00:33,758 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:33,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:33,758 INFO L85 PathProgramCache]: Analyzing trace with hash 799660206, now seen corresponding path program 2 times [2022-07-12 10:00:33,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:33,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918771191] [2022-07-12 10:00:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:33,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:33,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:33,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918771191] [2022-07-12 10:00:33,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918771191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:33,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:33,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:00:33,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132128906] [2022-07-12 10:00:33,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:33,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:00:33,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:33,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:00:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:00:33,860 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-12 10:00:33,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 260 transitions, 2212 flow. Second operand has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 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) [2022-07-12 10:00:33,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:33,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-12 10:00:33,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:34,641 INFO L129 PetriNetUnfolder]: 1564/4153 cut-off events. [2022-07-12 10:00:34,642 INFO L130 PetriNetUnfolder]: For 22151/22308 co-relation queries the response was YES. [2022-07-12 10:00:34,662 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14974 conditions, 4153 events. 1564/4153 cut-off events. For 22151/22308 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 36068 event pairs, 292 based on Foata normal form. 128/4149 useless extension candidates. Maximal degree in co-relation 14582. Up to 796 conditions per place. [2022-07-12 10:00:34,668 INFO L132 encePairwiseOnDemand]: 162/183 looper letters, 159 selfloop transitions, 76 changer transitions 28/373 dead transitions. [2022-07-12 10:00:34,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 373 transitions, 3508 flow [2022-07-12 10:00:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:00:34,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:00:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2145 transitions. [2022-07-12 10:00:34,674 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7325819672131147 [2022-07-12 10:00:34,674 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2145 transitions. [2022-07-12 10:00:34,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2145 transitions. [2022-07-12 10:00:34,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:34,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2145 transitions. [2022-07-12 10:00:34,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 134.0625) internal successors, (2145), 16 states have internal predecessors, (2145), 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) [2022-07-12 10:00:34,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2022-07-12 10:00:34,680 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2022-07-12 10:00:34,681 INFO L186 Difference]: Start difference. First operand has 242 places, 260 transitions, 2212 flow. Second operand 16 states and 2145 transitions. [2022-07-12 10:00:34,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 373 transitions, 3508 flow [2022-07-12 10:00:34,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 373 transitions, 3401 flow, removed 32 selfloop flow, removed 5 redundant places. [2022-07-12 10:00:34,749 INFO L242 Difference]: Finished difference. Result has 257 places, 263 transitions, 2379 flow [2022-07-12 10:00:34,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2379, PETRI_PLACES=257, PETRI_TRANSITIONS=263} [2022-07-12 10:00:34,750 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 97 predicate places. [2022-07-12 10:00:34,750 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 263 transitions, 2379 flow [2022-07-12 10:00:34,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 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) [2022-07-12 10:00:34,750 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:34,750 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:34,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:00:34,751 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:34,751 INFO L85 PathProgramCache]: Analyzing trace with hash 327729458, now seen corresponding path program 3 times [2022-07-12 10:00:34,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:34,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158536421] [2022-07-12 10:00:34,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:34,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:34,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:34,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:34,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158536421] [2022-07-12 10:00:34,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158536421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:34,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:34,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:00:34,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567910895] [2022-07-12 10:00:34,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:34,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:00:34,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:34,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:00:34,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:00:34,845 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-12 10:00:34,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 263 transitions, 2379 flow. Second operand has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 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) [2022-07-12 10:00:34,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:34,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-12 10:00:34,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:35,615 INFO L129 PetriNetUnfolder]: 1510/4005 cut-off events. [2022-07-12 10:00:35,615 INFO L130 PetriNetUnfolder]: For 24662/24782 co-relation queries the response was YES. [2022-07-12 10:00:35,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14738 conditions, 4005 events. 1510/4005 cut-off events. For 24662/24782 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34643 event pairs, 429 based on Foata normal form. 99/3970 useless extension candidates. Maximal degree in co-relation 14420. Up to 1439 conditions per place. [2022-07-12 10:00:35,643 INFO L132 encePairwiseOnDemand]: 169/183 looper letters, 138 selfloop transitions, 82 changer transitions 7/337 dead transitions. [2022-07-12 10:00:35,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 337 transitions, 3271 flow [2022-07-12 10:00:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:00:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:00:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2108 transitions. [2022-07-12 10:00:35,646 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7199453551912568 [2022-07-12 10:00:35,646 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2108 transitions. [2022-07-12 10:00:35,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2108 transitions. [2022-07-12 10:00:35,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:35,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2108 transitions. [2022-07-12 10:00:35,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 131.75) internal successors, (2108), 16 states have internal predecessors, (2108), 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) [2022-07-12 10:00:35,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2022-07-12 10:00:35,654 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2022-07-12 10:00:35,654 INFO L186 Difference]: Start difference. First operand has 257 places, 263 transitions, 2379 flow. Second operand 16 states and 2108 transitions. [2022-07-12 10:00:35,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 337 transitions, 3271 flow [2022-07-12 10:00:35,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 337 transitions, 3183 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-07-12 10:00:35,734 INFO L242 Difference]: Finished difference. Result has 268 places, 267 transitions, 2534 flow [2022-07-12 10:00:35,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2534, PETRI_PLACES=268, PETRI_TRANSITIONS=267} [2022-07-12 10:00:35,735 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 108 predicate places. [2022-07-12 10:00:35,735 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 267 transitions, 2534 flow [2022-07-12 10:00:35,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 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) [2022-07-12 10:00:35,735 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:35,735 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:35,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:00:35,736 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:35,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:35,736 INFO L85 PathProgramCache]: Analyzing trace with hash 724432640, now seen corresponding path program 1 times [2022-07-12 10:00:35,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:35,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776177734] [2022-07-12 10:00:35,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:35,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:35,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:35,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:35,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:35,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776177734] [2022-07-12 10:00:35,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776177734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:35,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:35,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:00:35,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450484965] [2022-07-12 10:00:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:35,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:00:35,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:35,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:00:35,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:00:35,856 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-12 10:00:35,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 267 transitions, 2534 flow. Second operand has 10 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 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) [2022-07-12 10:00:35,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:35,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-12 10:00:35,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:36,510 INFO L129 PetriNetUnfolder]: 1488/4058 cut-off events. [2022-07-12 10:00:36,510 INFO L130 PetriNetUnfolder]: For 27735/27847 co-relation queries the response was YES. [2022-07-12 10:00:36,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15095 conditions, 4058 events. 1488/4058 cut-off events. For 27735/27847 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 34873 event pairs, 160 based on Foata normal form. 124/4053 useless extension candidates. Maximal degree in co-relation 14789. Up to 994 conditions per place. [2022-07-12 10:00:36,543 INFO L132 encePairwiseOnDemand]: 166/183 looper letters, 175 selfloop transitions, 65 changer transitions 36/386 dead transitions. [2022-07-12 10:00:36,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 386 transitions, 4047 flow [2022-07-12 10:00:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:00:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:00:36,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1639 transitions. [2022-07-12 10:00:36,547 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7463570127504554 [2022-07-12 10:00:36,547 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1639 transitions. [2022-07-12 10:00:36,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1639 transitions. [2022-07-12 10:00:36,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:36,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1639 transitions. [2022-07-12 10:00:36,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.58333333333334) internal successors, (1639), 12 states have internal predecessors, (1639), 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) [2022-07-12 10:00:36,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:36,551 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:36,551 INFO L186 Difference]: Start difference. First operand has 268 places, 267 transitions, 2534 flow. Second operand 12 states and 1639 transitions. [2022-07-12 10:00:36,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 386 transitions, 4047 flow [2022-07-12 10:00:36,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 386 transitions, 3877 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-07-12 10:00:36,629 INFO L242 Difference]: Finished difference. Result has 275 places, 275 transitions, 2698 flow [2022-07-12 10:00:36,629 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2698, PETRI_PLACES=275, PETRI_TRANSITIONS=275} [2022-07-12 10:00:36,629 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 115 predicate places. [2022-07-12 10:00:36,630 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 275 transitions, 2698 flow [2022-07-12 10:00:36,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 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) [2022-07-12 10:00:36,630 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:36,630 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:36,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 10:00:36,630 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:36,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:36,631 INFO L85 PathProgramCache]: Analyzing trace with hash 399981210, now seen corresponding path program 1 times [2022-07-12 10:00:36,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:36,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160822688] [2022-07-12 10:00:36,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:36,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:36,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:36,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160822688] [2022-07-12 10:00:36,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160822688] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:36,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:36,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:00:36,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424049719] [2022-07-12 10:00:36,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:36,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:00:36,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:36,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:00:36,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:00:36,718 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-12 10:00:36,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 275 transitions, 2698 flow. Second operand has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 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) [2022-07-12 10:00:36,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:36,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-12 10:00:36,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:37,473 INFO L129 PetriNetUnfolder]: 1256/3667 cut-off events. [2022-07-12 10:00:37,473 INFO L130 PetriNetUnfolder]: For 29670/29782 co-relation queries the response was YES. [2022-07-12 10:00:37,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14376 conditions, 3667 events. 1256/3667 cut-off events. For 29670/29782 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 31813 event pairs, 128 based on Foata normal form. 115/3662 useless extension candidates. Maximal degree in co-relation 14064. Up to 537 conditions per place. [2022-07-12 10:00:37,505 INFO L132 encePairwiseOnDemand]: 162/183 looper letters, 162 selfloop transitions, 76 changer transitions 36/384 dead transitions. [2022-07-12 10:00:37,505 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 384 transitions, 4022 flow [2022-07-12 10:00:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 10:00:37,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-12 10:00:37,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2146 transitions. [2022-07-12 10:00:37,507 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7329234972677595 [2022-07-12 10:00:37,507 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2146 transitions. [2022-07-12 10:00:37,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2146 transitions. [2022-07-12 10:00:37,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:37,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2146 transitions. [2022-07-12 10:00:37,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 134.125) internal successors, (2146), 16 states have internal predecessors, (2146), 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) [2022-07-12 10:00:37,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2022-07-12 10:00:37,512 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 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) [2022-07-12 10:00:37,512 INFO L186 Difference]: Start difference. First operand has 275 places, 275 transitions, 2698 flow. Second operand 16 states and 2146 transitions. [2022-07-12 10:00:37,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 384 transitions, 4022 flow [2022-07-12 10:00:37,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 384 transitions, 3858 flow, removed 40 selfloop flow, removed 5 redundant places. [2022-07-12 10:00:37,588 INFO L242 Difference]: Finished difference. Result has 289 places, 277 transitions, 2788 flow [2022-07-12 10:00:37,588 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2788, PETRI_PLACES=289, PETRI_TRANSITIONS=277} [2022-07-12 10:00:37,588 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 129 predicate places. [2022-07-12 10:00:37,588 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 277 transitions, 2788 flow [2022-07-12 10:00:37,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 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) [2022-07-12 10:00:37,589 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:37,589 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:37,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 10:00:37,589 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:37,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:37,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1076776630, now seen corresponding path program 2 times [2022-07-12 10:00:37,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:37,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168269514] [2022-07-12 10:00:37,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:37,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:37,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:37,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:37,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168269514] [2022-07-12 10:00:37,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168269514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:37,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:37,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:00:37,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800371552] [2022-07-12 10:00:37,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:37,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:00:37,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:37,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:00:37,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:00:37,682 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-12 10:00:37,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 277 transitions, 2788 flow. Second operand has 10 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 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) [2022-07-12 10:00:37,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:37,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-12 10:00:37,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:38,297 INFO L129 PetriNetUnfolder]: 1179/3402 cut-off events. [2022-07-12 10:00:38,297 INFO L130 PetriNetUnfolder]: For 32410/32457 co-relation queries the response was YES. [2022-07-12 10:00:38,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13446 conditions, 3402 events. 1179/3402 cut-off events. For 32410/32457 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 28893 event pairs, 236 based on Foata normal form. 57/3338 useless extension candidates. Maximal degree in co-relation 13119. Up to 1010 conditions per place. [2022-07-12 10:00:38,323 INFO L132 encePairwiseOnDemand]: 167/183 looper letters, 157 selfloop transitions, 74 changer transitions 16/357 dead transitions. [2022-07-12 10:00:38,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 357 transitions, 3883 flow [2022-07-12 10:00:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:00:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:00:38,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1618 transitions. [2022-07-12 10:00:38,325 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7367941712204007 [2022-07-12 10:00:38,325 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1618 transitions. [2022-07-12 10:00:38,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1618 transitions. [2022-07-12 10:00:38,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:38,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1618 transitions. [2022-07-12 10:00:38,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 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) [2022-07-12 10:00:38,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:38,336 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:38,336 INFO L186 Difference]: Start difference. First operand has 289 places, 277 transitions, 2788 flow. Second operand 12 states and 1618 transitions. [2022-07-12 10:00:38,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 357 transitions, 3883 flow [2022-07-12 10:00:38,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 357 transitions, 3720 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-07-12 10:00:38,410 INFO L242 Difference]: Finished difference. Result has 293 places, 279 transitions, 2910 flow [2022-07-12 10:00:38,411 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2910, PETRI_PLACES=293, PETRI_TRANSITIONS=279} [2022-07-12 10:00:38,411 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 133 predicate places. [2022-07-12 10:00:38,411 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 279 transitions, 2910 flow [2022-07-12 10:00:38,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 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) [2022-07-12 10:00:38,412 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:38,412 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:38,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 10:00:38,412 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:38,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:38,412 INFO L85 PathProgramCache]: Analyzing trace with hash -180520246, now seen corresponding path program 2 times [2022-07-12 10:00:38,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:38,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311302863] [2022-07-12 10:00:38,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:38,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:38,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:38,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311302863] [2022-07-12 10:00:38,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311302863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:38,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:38,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:00:38,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125476210] [2022-07-12 10:00:38,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:38,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:00:38,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:38,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:00:38,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:00:38,505 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-12 10:00:38,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 279 transitions, 2910 flow. Second operand has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 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) [2022-07-12 10:00:38,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:38,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-12 10:00:38,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:39,164 INFO L129 PetriNetUnfolder]: 1013/3084 cut-off events. [2022-07-12 10:00:39,164 INFO L130 PetriNetUnfolder]: For 31080/31196 co-relation queries the response was YES. [2022-07-12 10:00:39,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12225 conditions, 3084 events. 1013/3084 cut-off events. For 31080/31196 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 26083 event pairs, 167 based on Foata normal form. 108/3072 useless extension candidates. Maximal degree in co-relation 11945. Up to 828 conditions per place. [2022-07-12 10:00:39,190 INFO L132 encePairwiseOnDemand]: 169/183 looper letters, 147 selfloop transitions, 77 changer transitions 19/348 dead transitions. [2022-07-12 10:00:39,190 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 348 transitions, 3818 flow [2022-07-12 10:00:39,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 10:00:39,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-12 10:00:39,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1982 transitions. [2022-07-12 10:00:39,192 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.722040072859745 [2022-07-12 10:00:39,192 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1982 transitions. [2022-07-12 10:00:39,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1982 transitions. [2022-07-12 10:00:39,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:39,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1982 transitions. [2022-07-12 10:00:39,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 132.13333333333333) internal successors, (1982), 15 states have internal predecessors, (1982), 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) [2022-07-12 10:00:39,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 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) [2022-07-12 10:00:39,197 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 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) [2022-07-12 10:00:39,197 INFO L186 Difference]: Start difference. First operand has 293 places, 279 transitions, 2910 flow. Second operand 15 states and 1982 transitions. [2022-07-12 10:00:39,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 348 transitions, 3818 flow [2022-07-12 10:00:39,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 348 transitions, 3738 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-07-12 10:00:39,269 INFO L242 Difference]: Finished difference. Result has 299 places, 265 transitions, 2857 flow [2022-07-12 10:00:39,269 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2857, PETRI_PLACES=299, PETRI_TRANSITIONS=265} [2022-07-12 10:00:39,269 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 139 predicate places. [2022-07-12 10:00:39,270 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 265 transitions, 2857 flow [2022-07-12 10:00:39,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 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) [2022-07-12 10:00:39,270 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:39,270 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:39,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:00:39,270 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:39,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:39,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1185028197, now seen corresponding path program 1 times [2022-07-12 10:00:39,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:39,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702960754] [2022-07-12 10:00:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:39,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:39,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:39,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:39,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702960754] [2022-07-12 10:00:39,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702960754] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:39,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:39,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:00:39,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952061689] [2022-07-12 10:00:39,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:39,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:00:39,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:39,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:00:39,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:00:39,342 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-12 10:00:39,342 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 265 transitions, 2857 flow. Second operand has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 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) [2022-07-12 10:00:39,342 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:39,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-12 10:00:39,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:39,792 INFO L129 PetriNetUnfolder]: 642/2286 cut-off events. [2022-07-12 10:00:39,792 INFO L130 PetriNetUnfolder]: For 21042/21082 co-relation queries the response was YES. [2022-07-12 10:00:39,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8633 conditions, 2286 events. 642/2286 cut-off events. For 21042/21082 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 18103 event pairs, 93 based on Foata normal form. 24/2240 useless extension candidates. Maximal degree in co-relation 8393. Up to 315 conditions per place. [2022-07-12 10:00:39,809 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 108 selfloop transitions, 37 changer transitions 60/340 dead transitions. [2022-07-12 10:00:39,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 340 transitions, 3843 flow [2022-07-12 10:00:39,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:00:39,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:00:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1633 transitions. [2022-07-12 10:00:39,811 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8112270243417784 [2022-07-12 10:00:39,811 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1633 transitions. [2022-07-12 10:00:39,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1633 transitions. [2022-07-12 10:00:39,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:39,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1633 transitions. [2022-07-12 10:00:39,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 148.45454545454547) internal successors, (1633), 11 states have internal predecessors, (1633), 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) [2022-07-12 10:00:39,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 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) [2022-07-12 10:00:39,814 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 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) [2022-07-12 10:00:39,814 INFO L186 Difference]: Start difference. First operand has 299 places, 265 transitions, 2857 flow. Second operand 11 states and 1633 transitions. [2022-07-12 10:00:39,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 340 transitions, 3843 flow [2022-07-12 10:00:39,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 340 transitions, 3512 flow, removed 31 selfloop flow, removed 20 redundant places. [2022-07-12 10:00:39,859 INFO L242 Difference]: Finished difference. Result has 287 places, 238 transitions, 2229 flow [2022-07-12 10:00:39,859 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2584, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2229, PETRI_PLACES=287, PETRI_TRANSITIONS=238} [2022-07-12 10:00:39,860 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 127 predicate places. [2022-07-12 10:00:39,860 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 238 transitions, 2229 flow [2022-07-12 10:00:39,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 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) [2022-07-12 10:00:39,860 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:39,860 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:39,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:00:39,861 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:39,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:39,861 INFO L85 PathProgramCache]: Analyzing trace with hash -848613193, now seen corresponding path program 2 times [2022-07-12 10:00:39,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:39,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205859091] [2022-07-12 10:00:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:39,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:39,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:39,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205859091] [2022-07-12 10:00:39,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205859091] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:39,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:39,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:00:39,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764464840] [2022-07-12 10:00:39,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:39,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:00:39,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:00:39,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:00:39,913 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-12 10:00:39,913 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 238 transitions, 2229 flow. Second operand has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 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) [2022-07-12 10:00:39,913 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:39,913 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-12 10:00:39,913 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:40,286 INFO L129 PetriNetUnfolder]: 559/1905 cut-off events. [2022-07-12 10:00:40,287 INFO L130 PetriNetUnfolder]: For 15355/15423 co-relation queries the response was YES. [2022-07-12 10:00:40,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7089 conditions, 1905 events. 559/1905 cut-off events. For 15355/15423 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 14268 event pairs, 80 based on Foata normal form. 38/1862 useless extension candidates. Maximal degree in co-relation 6960. Up to 333 conditions per place. [2022-07-12 10:00:40,301 INFO L132 encePairwiseOnDemand]: 171/183 looper letters, 110 selfloop transitions, 45 changer transitions 27/317 dead transitions. [2022-07-12 10:00:40,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 317 transitions, 3294 flow [2022-07-12 10:00:40,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:00:40,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:00:40,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1769 transitions. [2022-07-12 10:00:40,304 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2022-07-12 10:00:40,304 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1769 transitions. [2022-07-12 10:00:40,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1769 transitions. [2022-07-12 10:00:40,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:40,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1769 transitions. [2022-07-12 10:00:40,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.41666666666666) internal successors, (1769), 12 states have internal predecessors, (1769), 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) [2022-07-12 10:00:40,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:40,308 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:40,308 INFO L186 Difference]: Start difference. First operand has 287 places, 238 transitions, 2229 flow. Second operand 12 states and 1769 transitions. [2022-07-12 10:00:40,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 317 transitions, 3294 flow [2022-07-12 10:00:40,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 317 transitions, 2902 flow, removed 48 selfloop flow, removed 29 redundant places. [2022-07-12 10:00:40,337 INFO L242 Difference]: Finished difference. Result has 275 places, 250 transitions, 2203 flow [2022-07-12 10:00:40,337 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2203, PETRI_PLACES=275, PETRI_TRANSITIONS=250} [2022-07-12 10:00:40,338 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 115 predicate places. [2022-07-12 10:00:40,338 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 250 transitions, 2203 flow [2022-07-12 10:00:40,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 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) [2022-07-12 10:00:40,338 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:40,338 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:40,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:00:40,339 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:40,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:40,339 INFO L85 PathProgramCache]: Analyzing trace with hash -373271357, now seen corresponding path program 3 times [2022-07-12 10:00:40,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:40,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432334578] [2022-07-12 10:00:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:40,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:40,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:40,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432334578] [2022-07-12 10:00:40,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432334578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:40,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:40,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:00:40,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773426630] [2022-07-12 10:00:40,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:40,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:00:40,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:40,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:00:40,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:00:40,408 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-12 10:00:40,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 250 transitions, 2203 flow. Second operand has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 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) [2022-07-12 10:00:40,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:40,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-12 10:00:40,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:40,752 INFO L129 PetriNetUnfolder]: 579/2074 cut-off events. [2022-07-12 10:00:40,752 INFO L130 PetriNetUnfolder]: For 13499/13584 co-relation queries the response was YES. [2022-07-12 10:00:40,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7176 conditions, 2074 events. 579/2074 cut-off events. For 13499/13584 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16172 event pairs, 89 based on Foata normal form. 59/2039 useless extension candidates. Maximal degree in co-relation 6640. Up to 322 conditions per place. [2022-07-12 10:00:40,768 INFO L132 encePairwiseOnDemand]: 172/183 looper letters, 105 selfloop transitions, 52 changer transitions 42/334 dead transitions. [2022-07-12 10:00:40,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 334 transitions, 3294 flow [2022-07-12 10:00:40,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:00:40,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:00:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1773 transitions. [2022-07-12 10:00:40,772 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8073770491803278 [2022-07-12 10:00:40,772 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1773 transitions. [2022-07-12 10:00:40,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1773 transitions. [2022-07-12 10:00:40,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:40,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1773 transitions. [2022-07-12 10:00:40,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.75) internal successors, (1773), 12 states have internal predecessors, (1773), 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) [2022-07-12 10:00:40,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:40,778 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:40,778 INFO L186 Difference]: Start difference. First operand has 275 places, 250 transitions, 2203 flow. Second operand 12 states and 1773 transitions. [2022-07-12 10:00:40,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 334 transitions, 3294 flow [2022-07-12 10:00:40,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 334 transitions, 3220 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-07-12 10:00:40,811 INFO L242 Difference]: Finished difference. Result has 287 places, 256 transitions, 2359 flow [2022-07-12 10:00:40,811 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2359, PETRI_PLACES=287, PETRI_TRANSITIONS=256} [2022-07-12 10:00:40,811 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 127 predicate places. [2022-07-12 10:00:40,811 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 256 transitions, 2359 flow [2022-07-12 10:00:40,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 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) [2022-07-12 10:00:40,812 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:40,812 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:40,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-12 10:00:40,812 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:40,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1745939257, now seen corresponding path program 4 times [2022-07-12 10:00:40,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:40,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018975608] [2022-07-12 10:00:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:40,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:40,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:40,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018975608] [2022-07-12 10:00:40,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018975608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:40,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:40,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:00:40,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979750119] [2022-07-12 10:00:40,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:40,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:00:40,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:40,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:00:40,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:00:40,860 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 183 [2022-07-12 10:00:40,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 256 transitions, 2359 flow. Second operand has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 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) [2022-07-12 10:00:40,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:40,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 183 [2022-07-12 10:00:40,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:41,106 INFO L129 PetriNetUnfolder]: 458/2031 cut-off events. [2022-07-12 10:00:41,106 INFO L130 PetriNetUnfolder]: For 15436/15532 co-relation queries the response was YES. [2022-07-12 10:00:41,117 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 2031 events. 458/2031 cut-off events. For 15436/15532 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 16352 event pairs, 107 based on Foata normal form. 51/1967 useless extension candidates. Maximal degree in co-relation 6708. Up to 380 conditions per place. [2022-07-12 10:00:41,120 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 93 selfloop transitions, 10 changer transitions 7/279 dead transitions. [2022-07-12 10:00:41,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 279 transitions, 2798 flow [2022-07-12 10:00:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:00:41,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:00:41,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2022-07-12 10:00:41,121 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8784153005464481 [2022-07-12 10:00:41,121 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2022-07-12 10:00:41,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2022-07-12 10:00:41,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:41,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2022-07-12 10:00:41,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 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) [2022-07-12 10:00:41,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 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) [2022-07-12 10:00:41,123 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 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) [2022-07-12 10:00:41,123 INFO L186 Difference]: Start difference. First operand has 287 places, 256 transitions, 2359 flow. Second operand 4 states and 643 transitions. [2022-07-12 10:00:41,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 279 transitions, 2798 flow [2022-07-12 10:00:41,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 279 transitions, 2674 flow, removed 11 selfloop flow, removed 8 redundant places. [2022-07-12 10:00:41,151 INFO L242 Difference]: Finished difference. Result has 284 places, 255 transitions, 2275 flow [2022-07-12 10:00:41,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2275, PETRI_PLACES=284, PETRI_TRANSITIONS=255} [2022-07-12 10:00:41,151 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 124 predicate places. [2022-07-12 10:00:41,151 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 255 transitions, 2275 flow [2022-07-12 10:00:41,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 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) [2022-07-12 10:00:41,152 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:41,152 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:41,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-12 10:00:41,152 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:41,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1448459419, now seen corresponding path program 5 times [2022-07-12 10:00:41,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:41,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699661134] [2022-07-12 10:00:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:41,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:41,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:41,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:41,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699661134] [2022-07-12 10:00:41,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699661134] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:41,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:41,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:00:41,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176401456] [2022-07-12 10:00:41,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:41,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:00:41,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:41,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:00:41,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:00:41,213 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-12 10:00:41,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 255 transitions, 2275 flow. Second operand has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 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) [2022-07-12 10:00:41,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:41,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-12 10:00:41,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:41,573 INFO L129 PetriNetUnfolder]: 535/2116 cut-off events. [2022-07-12 10:00:41,573 INFO L130 PetriNetUnfolder]: For 15302/15465 co-relation queries the response was YES. [2022-07-12 10:00:41,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 2116 events. 535/2116 cut-off events. For 15302/15465 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 16927 event pairs, 96 based on Foata normal form. 100/2108 useless extension candidates. Maximal degree in co-relation 7162. Up to 305 conditions per place. [2022-07-12 10:00:41,587 INFO L132 encePairwiseOnDemand]: 172/183 looper letters, 100 selfloop transitions, 52 changer transitions 50/337 dead transitions. [2022-07-12 10:00:41,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 337 transitions, 3472 flow [2022-07-12 10:00:41,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:00:41,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:00:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2052 transitions. [2022-07-12 10:00:41,589 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8009367681498829 [2022-07-12 10:00:41,589 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2052 transitions. [2022-07-12 10:00:41,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2052 transitions. [2022-07-12 10:00:41,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:41,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2052 transitions. [2022-07-12 10:00:41,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 146.57142857142858) internal successors, (2052), 14 states have internal predecessors, (2052), 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) [2022-07-12 10:00:41,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 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) [2022-07-12 10:00:41,593 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 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) [2022-07-12 10:00:41,593 INFO L186 Difference]: Start difference. First operand has 284 places, 255 transitions, 2275 flow. Second operand 14 states and 2052 transitions. [2022-07-12 10:00:41,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 337 transitions, 3472 flow [2022-07-12 10:00:41,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 337 transitions, 3400 flow, removed 27 selfloop flow, removed 4 redundant places. [2022-07-12 10:00:41,623 INFO L242 Difference]: Finished difference. Result has 299 places, 255 transitions, 2431 flow [2022-07-12 10:00:41,623 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2431, PETRI_PLACES=299, PETRI_TRANSITIONS=255} [2022-07-12 10:00:41,624 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 139 predicate places. [2022-07-12 10:00:41,624 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 255 transitions, 2431 flow [2022-07-12 10:00:41,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 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) [2022-07-12 10:00:41,624 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:41,624 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:41,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-12 10:00:41,624 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:41,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:41,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2093478427, now seen corresponding path program 1 times [2022-07-12 10:00:41,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:41,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750494127] [2022-07-12 10:00:41,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:41,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:41,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:41,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750494127] [2022-07-12 10:00:41,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750494127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:41,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:41,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:00:41,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190339348] [2022-07-12 10:00:41,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:41,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:00:41,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:41,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:00:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:00:41,707 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-12 10:00:41,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 255 transitions, 2431 flow. Second operand has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 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) [2022-07-12 10:00:41,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:41,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-12 10:00:41,708 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:42,028 INFO L129 PetriNetUnfolder]: 461/1923 cut-off events. [2022-07-12 10:00:42,029 INFO L130 PetriNetUnfolder]: For 16276/16448 co-relation queries the response was YES. [2022-07-12 10:00:42,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7106 conditions, 1923 events. 461/1923 cut-off events. For 16276/16448 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 14829 event pairs, 91 based on Foata normal form. 112/1934 useless extension candidates. Maximal degree in co-relation 6766. Up to 284 conditions per place. [2022-07-12 10:00:42,044 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 92 selfloop transitions, 39 changer transitions 47/304 dead transitions. [2022-07-12 10:00:42,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 304 transitions, 3211 flow [2022-07-12 10:00:42,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:00:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:00:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1605 transitions. [2022-07-12 10:00:42,050 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.797317436661699 [2022-07-12 10:00:42,051 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1605 transitions. [2022-07-12 10:00:42,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1605 transitions. [2022-07-12 10:00:42,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:42,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1605 transitions. [2022-07-12 10:00:42,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 145.9090909090909) internal successors, (1605), 11 states have internal predecessors, (1605), 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) [2022-07-12 10:00:42,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 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) [2022-07-12 10:00:42,057 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 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) [2022-07-12 10:00:42,057 INFO L186 Difference]: Start difference. First operand has 299 places, 255 transitions, 2431 flow. Second operand 11 states and 1605 transitions. [2022-07-12 10:00:42,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 304 transitions, 3211 flow [2022-07-12 10:00:42,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 304 transitions, 3080 flow, removed 15 selfloop flow, removed 13 redundant places. [2022-07-12 10:00:42,089 INFO L242 Difference]: Finished difference. Result has 298 places, 229 transitions, 1957 flow [2022-07-12 10:00:42,089 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1957, PETRI_PLACES=298, PETRI_TRANSITIONS=229} [2022-07-12 10:00:42,089 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 138 predicate places. [2022-07-12 10:00:42,090 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 229 transitions, 1957 flow [2022-07-12 10:00:42,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 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) [2022-07-12 10:00:42,090 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:42,090 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:42,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-12 10:00:42,090 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:42,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:42,091 INFO L85 PathProgramCache]: Analyzing trace with hash -733823789, now seen corresponding path program 2 times [2022-07-12 10:00:42,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:42,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824031860] [2022-07-12 10:00:42,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:42,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:42,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:42,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:42,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824031860] [2022-07-12 10:00:42,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824031860] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:42,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:42,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:00:42,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110697727] [2022-07-12 10:00:42,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:42,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:00:42,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:42,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:00:42,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:00:42,192 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-12 10:00:42,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 229 transitions, 1957 flow. Second operand has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 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) [2022-07-12 10:00:42,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:42,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-12 10:00:42,193 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:42,439 INFO L129 PetriNetUnfolder]: 319/1457 cut-off events. [2022-07-12 10:00:42,440 INFO L130 PetriNetUnfolder]: For 10135/10271 co-relation queries the response was YES. [2022-07-12 10:00:42,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 1457 events. 319/1457 cut-off events. For 10135/10271 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10346 event pairs, 53 based on Foata normal form. 111/1477 useless extension candidates. Maximal degree in co-relation 4852. Up to 148 conditions per place. [2022-07-12 10:00:42,449 INFO L132 encePairwiseOnDemand]: 171/183 looper letters, 93 selfloop transitions, 42 changer transitions 37/291 dead transitions. [2022-07-12 10:00:42,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 291 transitions, 2936 flow [2022-07-12 10:00:42,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:00:42,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-12 10:00:42,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1754 transitions. [2022-07-12 10:00:42,451 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7987249544626593 [2022-07-12 10:00:42,451 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1754 transitions. [2022-07-12 10:00:42,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1754 transitions. [2022-07-12 10:00:42,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:42,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1754 transitions. [2022-07-12 10:00:42,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.16666666666666) internal successors, (1754), 12 states have internal predecessors, (1754), 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) [2022-07-12 10:00:42,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:42,454 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 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) [2022-07-12 10:00:42,455 INFO L186 Difference]: Start difference. First operand has 298 places, 229 transitions, 1957 flow. Second operand 12 states and 1754 transitions. [2022-07-12 10:00:42,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 291 transitions, 2936 flow [2022-07-12 10:00:42,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 291 transitions, 2463 flow, removed 35 selfloop flow, removed 36 redundant places. [2022-07-12 10:00:42,475 INFO L242 Difference]: Finished difference. Result has 277 places, 226 transitions, 1753 flow [2022-07-12 10:00:42,476 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1753, PETRI_PLACES=277, PETRI_TRANSITIONS=226} [2022-07-12 10:00:42,479 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 117 predicate places. [2022-07-12 10:00:42,480 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 226 transitions, 1753 flow [2022-07-12 10:00:42,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 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) [2022-07-12 10:00:42,480 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:42,480 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:42,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-12 10:00:42,480 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:42,480 INFO L85 PathProgramCache]: Analyzing trace with hash 483175112, now seen corresponding path program 1 times [2022-07-12 10:00:42,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:42,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875757617] [2022-07-12 10:00:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:42,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:42,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:42,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:42,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875757617] [2022-07-12 10:00:42,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875757617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:42,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:42,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:00:42,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712601915] [2022-07-12 10:00:42,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:00:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:00:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:00:42,544 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-12 10:00:42,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 226 transitions, 1753 flow. Second operand has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 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) [2022-07-12 10:00:42,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:42,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-12 10:00:42,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:42,748 INFO L129 PetriNetUnfolder]: 235/1082 cut-off events. [2022-07-12 10:00:42,748 INFO L130 PetriNetUnfolder]: For 5529/5658 co-relation queries the response was YES. [2022-07-12 10:00:42,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3562 conditions, 1082 events. 235/1082 cut-off events. For 5529/5658 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6727 event pairs, 52 based on Foata normal form. 99/1095 useless extension candidates. Maximal degree in co-relation 3482. Up to 140 conditions per place. [2022-07-12 10:00:42,756 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 46 selfloop transitions, 19 changer transitions 83/254 dead transitions. [2022-07-12 10:00:42,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 254 transitions, 2280 flow [2022-07-12 10:00:42,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:00:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:00:42,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1447 transitions. [2022-07-12 10:00:42,758 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7907103825136612 [2022-07-12 10:00:42,758 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1447 transitions. [2022-07-12 10:00:42,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1447 transitions. [2022-07-12 10:00:42,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:42,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1447 transitions. [2022-07-12 10:00:42,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 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) [2022-07-12 10:00:42,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 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) [2022-07-12 10:00:42,761 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 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) [2022-07-12 10:00:42,761 INFO L186 Difference]: Start difference. First operand has 277 places, 226 transitions, 1753 flow. Second operand 10 states and 1447 transitions. [2022-07-12 10:00:42,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 254 transitions, 2280 flow [2022-07-12 10:00:42,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 254 transitions, 2162 flow, removed 19 selfloop flow, removed 12 redundant places. [2022-07-12 10:00:42,778 INFO L242 Difference]: Finished difference. Result has 270 places, 162 transitions, 932 flow [2022-07-12 10:00:42,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=932, PETRI_PLACES=270, PETRI_TRANSITIONS=162} [2022-07-12 10:00:42,779 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 110 predicate places. [2022-07-12 10:00:42,779 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 162 transitions, 932 flow [2022-07-12 10:00:42,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 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) [2022-07-12 10:00:42,779 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:42,779 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:42,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-12 10:00:42,779 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:42,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:42,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1868277023, now seen corresponding path program 3 times [2022-07-12 10:00:42,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:42,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303608691] [2022-07-12 10:00:42,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:42,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:42,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:42,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303608691] [2022-07-12 10:00:42,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303608691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:42,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:42,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:00:42,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958738888] [2022-07-12 10:00:42,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:42,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:00:42,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:42,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:00:42,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:00:42,842 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-12 10:00:42,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 162 transitions, 932 flow. Second operand has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 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) [2022-07-12 10:00:42,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:42,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-12 10:00:42,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:43,031 INFO L129 PetriNetUnfolder]: 151/724 cut-off events. [2022-07-12 10:00:43,031 INFO L130 PetriNetUnfolder]: For 3114/3143 co-relation queries the response was YES. [2022-07-12 10:00:43,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 724 events. 151/724 cut-off events. For 3114/3143 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3906 event pairs, 46 based on Foata normal form. 15/682 useless extension candidates. Maximal degree in co-relation 2158. Up to 84 conditions per place. [2022-07-12 10:00:43,035 INFO L132 encePairwiseOnDemand]: 172/183 looper letters, 44 selfloop transitions, 24 changer transitions 30/204 dead transitions. [2022-07-12 10:00:43,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 204 transitions, 1483 flow [2022-07-12 10:00:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:00:43,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:00:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2008 transitions. [2022-07-12 10:00:43,037 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7837626854020296 [2022-07-12 10:00:43,037 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2008 transitions. [2022-07-12 10:00:43,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2008 transitions. [2022-07-12 10:00:43,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:43,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2008 transitions. [2022-07-12 10:00:43,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.42857142857142) internal successors, (2008), 14 states have internal predecessors, (2008), 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) [2022-07-12 10:00:43,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 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) [2022-07-12 10:00:43,041 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 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) [2022-07-12 10:00:43,041 INFO L186 Difference]: Start difference. First operand has 270 places, 162 transitions, 932 flow. Second operand 14 states and 2008 transitions. [2022-07-12 10:00:43,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 204 transitions, 1483 flow [2022-07-12 10:00:43,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 204 transitions, 1102 flow, removed 21 selfloop flow, removed 59 redundant places. [2022-07-12 10:00:43,048 INFO L242 Difference]: Finished difference. Result has 203 places, 162 transitions, 739 flow [2022-07-12 10:00:43,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=739, PETRI_PLACES=203, PETRI_TRANSITIONS=162} [2022-07-12 10:00:43,050 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 43 predicate places. [2022-07-12 10:00:43,050 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 162 transitions, 739 flow [2022-07-12 10:00:43,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 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) [2022-07-12 10:00:43,050 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:43,050 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:43,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-12 10:00:43,051 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:43,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:43,051 INFO L85 PathProgramCache]: Analyzing trace with hash 90273215, now seen corresponding path program 4 times [2022-07-12 10:00:43,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:43,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128769208] [2022-07-12 10:00:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:43,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:43,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:43,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:43,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128769208] [2022-07-12 10:00:43,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128769208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:43,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:43,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 10:00:43,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426884653] [2022-07-12 10:00:43,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:43,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:00:43,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:43,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:00:43,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 10:00:43,085 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 183 [2022-07-12 10:00:43,085 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 162 transitions, 739 flow. Second operand has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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) [2022-07-12 10:00:43,085 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:43,085 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 183 [2022-07-12 10:00:43,085 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:43,151 INFO L129 PetriNetUnfolder]: 101/583 cut-off events. [2022-07-12 10:00:43,151 INFO L130 PetriNetUnfolder]: For 1984/2008 co-relation queries the response was YES. [2022-07-12 10:00:43,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 583 events. 101/583 cut-off events. For 1984/2008 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2746 event pairs, 31 based on Foata normal form. 17/547 useless extension candidates. Maximal degree in co-relation 1456. Up to 84 conditions per place. [2022-07-12 10:00:43,154 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 35 selfloop transitions, 8 changer transitions 2/168 dead transitions. [2022-07-12 10:00:43,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 168 transitions, 876 flow [2022-07-12 10:00:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 10:00:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-12 10:00:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 628 transitions. [2022-07-12 10:00:43,155 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8579234972677595 [2022-07-12 10:00:43,155 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 628 transitions. [2022-07-12 10:00:43,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 628 transitions. [2022-07-12 10:00:43,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:43,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 628 transitions. [2022-07-12 10:00:43,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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) [2022-07-12 10:00:43,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 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) [2022-07-12 10:00:43,157 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 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) [2022-07-12 10:00:43,157 INFO L186 Difference]: Start difference. First operand has 203 places, 162 transitions, 739 flow. Second operand 4 states and 628 transitions. [2022-07-12 10:00:43,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 168 transitions, 876 flow [2022-07-12 10:00:43,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 168 transitions, 762 flow, removed 21 selfloop flow, removed 14 redundant places. [2022-07-12 10:00:43,161 INFO L242 Difference]: Finished difference. Result has 190 places, 162 transitions, 668 flow [2022-07-12 10:00:43,162 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=668, PETRI_PLACES=190, PETRI_TRANSITIONS=162} [2022-07-12 10:00:43,162 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 30 predicate places. [2022-07-12 10:00:43,162 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 162 transitions, 668 flow [2022-07-12 10:00:43,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 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) [2022-07-12 10:00:43,162 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:00:43,162 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:43,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-12 10:00:43,163 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-12 10:00:43,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:00:43,163 INFO L85 PathProgramCache]: Analyzing trace with hash -2045095045, now seen corresponding path program 1 times [2022-07-12 10:00:43,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:00:43,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004903962] [2022-07-12 10:00:43,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:00:43,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:00:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:00:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:00:43,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:00:43,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004903962] [2022-07-12 10:00:43,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004903962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:00:43,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:00:43,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:00:43,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065060615] [2022-07-12 10:00:43,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:00:43,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:00:43,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:00:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:00:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:00:43,223 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-12 10:00:43,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 162 transitions, 668 flow. Second operand has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 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) [2022-07-12 10:00:43,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:00:43,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-12 10:00:43,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:00:43,316 INFO L129 PetriNetUnfolder]: 111/563 cut-off events. [2022-07-12 10:00:43,316 INFO L130 PetriNetUnfolder]: For 1852/1879 co-relation queries the response was YES. [2022-07-12 10:00:43,318 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 563 events. 111/563 cut-off events. For 1852/1879 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2581 event pairs, 24 based on Foata normal form. 20/531 useless extension candidates. Maximal degree in co-relation 1415. Up to 79 conditions per place. [2022-07-12 10:00:43,318 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 0 selfloop transitions, 0 changer transitions 178/178 dead transitions. [2022-07-12 10:00:43,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 178 transitions, 937 flow [2022-07-12 10:00:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:00:43,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-12 10:00:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1287 transitions. [2022-07-12 10:00:43,320 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7814207650273224 [2022-07-12 10:00:43,320 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1287 transitions. [2022-07-12 10:00:43,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1287 transitions. [2022-07-12 10:00:43,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:00:43,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1287 transitions. [2022-07-12 10:00:43,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.0) internal successors, (1287), 9 states have internal predecessors, (1287), 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) [2022-07-12 10:00:43,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 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) [2022-07-12 10:00:43,323 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 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) [2022-07-12 10:00:43,323 INFO L186 Difference]: Start difference. First operand has 190 places, 162 transitions, 668 flow. Second operand 9 states and 1287 transitions. [2022-07-12 10:00:43,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 178 transitions, 937 flow [2022-07-12 10:00:43,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 178 transitions, 914 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-12 10:00:43,327 INFO L242 Difference]: Finished difference. Result has 194 places, 0 transitions, 0 flow [2022-07-12 10:00:43,327 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=194, PETRI_TRANSITIONS=0} [2022-07-12 10:00:43,327 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 34 predicate places. [2022-07-12 10:00:43,328 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 0 transitions, 0 flow [2022-07-12 10:00:43,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 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) [2022-07-12 10:00:43,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-07-12 10:00:43,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-12 10:00:43,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-07-12 10:00:43,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-07-12 10:00:43,330 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-07-12 10:00:43,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-12 10:00:43,331 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-12 10:00:43,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-12 10:00:43,331 INFO L356 BasicCegarLoop]: Path program histogram: [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:00:43,334 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:00:43,335 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:00:43,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:00:43 BasicIcfg [2022-07-12 10:00:43,337 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:00:43,338 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:00:43,338 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:00:43,338 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:00:43,338 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:00:22" (3/4) ... [2022-07-12 10:00:43,340 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:00:43,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader1 [2022-07-12 10:00:43,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader2 [2022-07-12 10:00:43,343 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_updater [2022-07-12 10:00:43,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-07-12 10:00:43,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 10:00:43,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:00:43,345 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:00:43,362 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:00:43,363 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:00:43,363 INFO L158 Benchmark]: Toolchain (without parser) took 21588.32ms. Allocated memory was 98.6MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 67.4MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 281.8MB. Max. memory is 16.1GB. [2022-07-12 10:00:43,363 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory was 55.4MB in the beginning and 55.4MB in the end (delta: 47.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:00:43,364 INFO L158 Benchmark]: CACSL2BoogieTranslator took 389.70ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 67.2MB in the beginning and 88.7MB in the end (delta: -21.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 10:00:43,364 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.97ms. Allocated memory is still 125.8MB. Free memory was 88.7MB in the beginning and 85.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:00:43,364 INFO L158 Benchmark]: Boogie Preprocessor took 39.87ms. Allocated memory is still 125.8MB. Free memory was 85.7MB in the beginning and 84.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:00:43,364 INFO L158 Benchmark]: RCFGBuilder took 565.25ms. Allocated memory is still 125.8MB. Free memory was 84.1MB in the beginning and 86.4MB in the end (delta: -2.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2022-07-12 10:00:43,364 INFO L158 Benchmark]: TraceAbstraction took 20526.79ms. Allocated memory was 125.8MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 85.9MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 272.2MB. Max. memory is 16.1GB. [2022-07-12 10:00:43,365 INFO L158 Benchmark]: Witness Printer took 24.96ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:00:43,366 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory was 55.4MB in the beginning and 55.4MB in the end (delta: 47.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 389.70ms. Allocated memory was 98.6MB in the beginning and 125.8MB in the end (delta: 27.3MB). Free memory was 67.2MB in the beginning and 88.7MB in the end (delta: -21.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.97ms. Allocated memory is still 125.8MB. Free memory was 88.7MB in the beginning and 85.7MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.87ms. Allocated memory is still 125.8MB. Free memory was 85.7MB in the beginning and 84.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 565.25ms. Allocated memory is still 125.8MB. Free memory was 84.1MB in the beginning and 86.4MB in the end (delta: -2.3MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * TraceAbstraction took 20526.79ms. Allocated memory was 125.8MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 85.9MB in the beginning and 1.5GB in the end (delta: -1.4GB). Peak memory consumption was 272.2MB. Max. memory is 16.1GB. * Witness Printer took 24.96ms. Allocated memory is still 1.8GB. Free memory was 1.5GB in the beginning and 1.5GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 712]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 719]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 269 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.4s, OverallIterations: 32, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2508 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2508 mSDsluCounter, 1595 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2902 mSDsCounter, 588 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8026 IncrementalHoareTripleChecker+Invalid, 8614 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 588 mSolverCounterUnsat, 520 mSDtfsCounter, 8026 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 396 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2910occurred in iteration=20, InterpolantAutomatonStates: 310, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 2690 NumberOfCodeBlocks, 2690 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2658 ConstructedInterpolants, 0 QuantifiedInterpolants, 14393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:00:43,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE