./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 35987657 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-?-3598765 [2022-07-21 08:34:41,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:34:41,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:34:41,956 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:34:41,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:34:41,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:34:41,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:34:41,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:34:41,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:34:41,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:34:41,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:34:41,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:34:41,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:34:41,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:34:41,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:34:41,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:34:41,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:34:41,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:34:41,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:34:41,988 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:34:41,989 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:34:41,990 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:34:41,991 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:34:41,992 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:34:41,993 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:34:42,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:34:42,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:34:42,005 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:34:42,006 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:34:42,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:34:42,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:34:42,007 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:34:42,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:34:42,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:34:42,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:34:42,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:34:42,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:34:42,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:34:42,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:34:42,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:34:42,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:34:42,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:34:42,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:34:42,046 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:34:42,046 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:34:42,047 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:34:42,047 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:34:42,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:34:42,048 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:34:42,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:34:42,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:34:42,050 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:34:42,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:34:42,051 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:34:42,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:34:42,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:34:42,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:34:42,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:34:42,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:34:42,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:34:42,052 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:34:42,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:34:42,053 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:34:42,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:34:42,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:34:42,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:34:42,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:34:42,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:34:42,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:34:42,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:34:42,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:34:42,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:34:42,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:34:42,058 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:34:42,058 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:34:42,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:34:42,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2022-07-21 08:34:42,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:34:42,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:34:42,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:34:42,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:34:42,354 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:34:42,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-07-21 08:34:42,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6587b85d6/4f0d82d6ada84d31aa569bdbf7d3f079/FLAG5ede95af6 [2022-07-21 08:34:42,837 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:34:42,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-07-21 08:34:42,858 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6587b85d6/4f0d82d6ada84d31aa569bdbf7d3f079/FLAG5ede95af6 [2022-07-21 08:34:43,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6587b85d6/4f0d82d6ada84d31aa569bdbf7d3f079 [2022-07-21 08:34:43,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:34:43,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:34:43,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:34:43,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:34:43,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:34:43,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab114be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43, skipping insertion in model container [2022-07-21 08:34:43,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:34:43,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:34:43,558 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] [2022-07-21 08:34:43,562 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] [2022-07-21 08:34:43,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:34:43,593 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:34:43,615 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] [2022-07-21 08:34:43,620 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] [2022-07-21 08:34:43,635 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:34:43,664 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:34:43,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43 WrapperNode [2022-07-21 08:34:43,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:34:43,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:34:43,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:34:43,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:34:43,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,726 INFO L137 Inliner]: procedures = 177, calls = 54, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 270 [2022-07-21 08:34:43,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:34:43,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:34:43,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:34:43,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:34:43,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:34:43,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:34:43,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:34:43,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:34:43,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (1/1) ... [2022-07-21 08:34:43,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:34:43,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:34:43,792 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) [2022-07-21 08:34:43,799 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 [2022-07-21 08:34:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-07-21 08:34:43,819 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-07-21 08:34:43,819 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-07-21 08:34:43,820 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-07-21 08:34:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:34:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:34:43,820 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-07-21 08:34:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-07-21 08:34:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-21 08:34:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:34:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:34:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:34:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:34:43,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:34:43,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:34:43,822 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:34:43,924 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:34:43,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:34:44,231 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:34:44,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:34:44,357 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 08:34:44,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:34:44 BoogieIcfgContainer [2022-07-21 08:34:44,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:34:44,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:34:44,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:34:44,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:34:44,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:34:43" (1/3) ... [2022-07-21 08:34:44,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db99500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:34:44, skipping insertion in model container [2022-07-21 08:34:44,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:34:43" (2/3) ... [2022-07-21 08:34:44,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db99500 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:34:44, skipping insertion in model container [2022-07-21 08:34:44,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:34:44" (3/3) ... [2022-07-21 08:34:44,364 INFO L111 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2022-07-21 08:34:44,368 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:34:44,374 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:34:44,374 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:34:44,374 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:34:44,440 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-21 08:34:44,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 183 transitions, 390 flow [2022-07-21 08:34:44,541 INFO L129 PetriNetUnfolder]: 18/180 cut-off events. [2022-07-21 08:34:44,542 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-21 08:34:44,553 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. [2022-07-21 08:34:44,553 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 183 transitions, 390 flow [2022-07-21 08:34:44,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 168 transitions, 351 flow [2022-07-21 08:34:44,568 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:34:44,573 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@608f457b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6736fc19 [2022-07-21 08:34:44,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-21 08:34:44,597 INFO L129 PetriNetUnfolder]: 9/123 cut-off events. [2022-07-21 08:34:44,597 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-21 08:34:44,597 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:44,598 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] [2022-07-21 08:34:44,598 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)] === [2022-07-21 08:34:44,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:44,602 INFO L85 PathProgramCache]: Analyzing trace with hash -707274187, now seen corresponding path program 1 times [2022-07-21 08:34:44,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:44,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878721838] [2022-07-21 08:34:44,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:44,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:44,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:44,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878721838] [2022-07-21 08:34:44,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878721838] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:44,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:44,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:34:44,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978810269] [2022-07-21 08:34:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:44,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:34:44,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:44,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:34:44,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:34:44,882 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 183 [2022-07-21 08:34:44,887 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) [2022-07-21 08:34:44,887 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:44,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 183 [2022-07-21 08:34:44,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:45,243 INFO L129 PetriNetUnfolder]: 629/1791 cut-off events. [2022-07-21 08:34:45,244 INFO L130 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2022-07-21 08:34:45,250 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. [2022-07-21 08:34:45,260 INFO L132 encePairwiseOnDemand]: 174/183 looper letters, 40 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2022-07-21 08:34:45,260 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 175 transitions, 455 flow [2022-07-21 08:34:45,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:34:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:34:45,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2022-07-21 08:34:45,273 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8998178506375227 [2022-07-21 08:34:45,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2022-07-21 08:34:45,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2022-07-21 08:34:45,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:45,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2022-07-21 08:34:45,282 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) [2022-07-21 08:34:45,288 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) [2022-07-21 08:34:45,288 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) [2022-07-21 08:34:45,290 INFO L186 Difference]: Start difference. First operand has 160 places, 168 transitions, 351 flow. Second operand 3 states and 494 transitions. [2022-07-21 08:34:45,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 175 transitions, 455 flow [2022-07-21 08:34:45,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 175 transitions, 442 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-21 08:34:45,298 INFO L242 Difference]: Finished difference. Result has 159 places, 163 transitions, 344 flow [2022-07-21 08:34:45,299 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} [2022-07-21 08:34:45,304 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, -1 predicate places. [2022-07-21 08:34:45,304 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 163 transitions, 344 flow [2022-07-21 08:34:45,305 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) [2022-07-21 08:34:45,305 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:45,305 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] [2022-07-21 08:34:45,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:34:45,306 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)] === [2022-07-21 08:34:45,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:45,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1151136919, now seen corresponding path program 1 times [2022-07-21 08:34:45,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:45,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569941842] [2022-07-21 08:34:45,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:45,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:45,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:45,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569941842] [2022-07-21 08:34:45,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569941842] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:45,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:45,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:34:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612555202] [2022-07-21 08:34:45,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:45,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:34:45,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:34:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:34:45,461 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-07-21 08:34:45,461 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) [2022-07-21 08:34:45,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:45,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-07-21 08:34:45,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:45,629 INFO L129 PetriNetUnfolder]: 402/1255 cut-off events. [2022-07-21 08:34:45,630 INFO L130 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-07-21 08:34:45,633 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. [2022-07-21 08:34:45,638 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 26 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2022-07-21 08:34:45,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 172 transitions, 421 flow [2022-07-21 08:34:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:34:45,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:34:45,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-07-21 08:34:45,640 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-07-21 08:34:45,640 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-07-21 08:34:45,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-07-21 08:34:45,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:45,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-07-21 08:34:45,642 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) [2022-07-21 08:34:45,643 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) [2022-07-21 08:34:45,643 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) [2022-07-21 08:34:45,644 INFO L186 Difference]: Start difference. First operand has 159 places, 163 transitions, 344 flow. Second operand 3 states and 500 transitions. [2022-07-21 08:34:45,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 172 transitions, 421 flow [2022-07-21 08:34:45,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 172 transitions, 419 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:34:45,650 INFO L242 Difference]: Finished difference. Result has 161 places, 163 transitions, 350 flow [2022-07-21 08:34:45,651 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} [2022-07-21 08:34:45,651 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2022-07-21 08:34:45,652 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 163 transitions, 350 flow [2022-07-21 08:34:45,653 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) [2022-07-21 08:34:45,653 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:45,653 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] [2022-07-21 08:34:45,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:34:45,654 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)] === [2022-07-21 08:34:45,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:45,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1794772677, now seen corresponding path program 1 times [2022-07-21 08:34:45,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:45,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234025354] [2022-07-21 08:34:45,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:45,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:45,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:45,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:45,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234025354] [2022-07-21 08:34:45,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234025354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:45,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:45,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:34:45,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755278707] [2022-07-21 08:34:45,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:45,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:34:45,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:45,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:34:45,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:34:45,778 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-21 08:34:45,779 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) [2022-07-21 08:34:45,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:45,779 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-21 08:34:45,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:46,551 INFO L129 PetriNetUnfolder]: 2951/6671 cut-off events. [2022-07-21 08:34:46,552 INFO L130 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2022-07-21 08:34:46,567 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. [2022-07-21 08:34:46,587 INFO L132 encePairwiseOnDemand]: 176/183 looper letters, 84 selfloop transitions, 11 changer transitions 7/227 dead transitions. [2022-07-21 08:34:46,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 227 transitions, 695 flow [2022-07-21 08:34:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:34:46,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:34:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1070 transitions. [2022-07-21 08:34:46,591 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8352849336455894 [2022-07-21 08:34:46,591 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1070 transitions. [2022-07-21 08:34:46,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1070 transitions. [2022-07-21 08:34:46,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:46,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1070 transitions. [2022-07-21 08:34:46,593 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) [2022-07-21 08:34:46,595 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) [2022-07-21 08:34:46,595 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) [2022-07-21 08:34:46,595 INFO L186 Difference]: Start difference. First operand has 161 places, 163 transitions, 350 flow. Second operand 7 states and 1070 transitions. [2022-07-21 08:34:46,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 227 transitions, 695 flow [2022-07-21 08:34:46,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 227 transitions, 691 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:34:46,609 INFO L242 Difference]: Finished difference. Result has 168 places, 172 transitions, 408 flow [2022-07-21 08:34:46,610 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} [2022-07-21 08:34:46,611 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 8 predicate places. [2022-07-21 08:34:46,611 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 172 transitions, 408 flow [2022-07-21 08:34:46,612 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) [2022-07-21 08:34:46,612 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:46,612 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] [2022-07-21 08:34:46,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:34:46,613 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)] === [2022-07-21 08:34:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:46,614 INFO L85 PathProgramCache]: Analyzing trace with hash 54936445, now seen corresponding path program 1 times [2022-07-21 08:34:46,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:46,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128656179] [2022-07-21 08:34:46,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:46,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:46,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:46,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:46,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128656179] [2022-07-21 08:34:46,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128656179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:46,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:46,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:34:46,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322326768] [2022-07-21 08:34:46,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:46,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:34:46,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:46,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:34:46,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:34:46,728 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 183 [2022-07-21 08:34:46,729 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) [2022-07-21 08:34:46,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:46,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 183 [2022-07-21 08:34:46,730 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:47,182 INFO L129 PetriNetUnfolder]: 1220/3032 cut-off events. [2022-07-21 08:34:47,182 INFO L130 PetriNetUnfolder]: For 386/397 co-relation queries the response was YES. [2022-07-21 08:34:47,189 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. [2022-07-21 08:34:47,198 INFO L132 encePairwiseOnDemand]: 165/183 looper letters, 95 selfloop transitions, 31 changer transitions 0/253 dead transitions. [2022-07-21 08:34:47,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 253 transitions, 868 flow [2022-07-21 08:34:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:34:47,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 08:34:47,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1198 transitions. [2022-07-21 08:34:47,201 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8183060109289617 [2022-07-21 08:34:47,201 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1198 transitions. [2022-07-21 08:34:47,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1198 transitions. [2022-07-21 08:34:47,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:47,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1198 transitions. [2022-07-21 08:34:47,204 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) [2022-07-21 08:34:47,206 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) [2022-07-21 08:34:47,207 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) [2022-07-21 08:34:47,207 INFO L186 Difference]: Start difference. First operand has 168 places, 172 transitions, 408 flow. Second operand 8 states and 1198 transitions. [2022-07-21 08:34:47,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 253 transitions, 868 flow [2022-07-21 08:34:47,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 253 transitions, 868 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:34:47,214 INFO L242 Difference]: Finished difference. Result has 181 places, 205 transitions, 655 flow [2022-07-21 08:34:47,215 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} [2022-07-21 08:34:47,215 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 21 predicate places. [2022-07-21 08:34:47,215 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 205 transitions, 655 flow [2022-07-21 08:34:47,216 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) [2022-07-21 08:34:47,216 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:47,216 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] [2022-07-21 08:34:47,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:34:47,217 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)] === [2022-07-21 08:34:47,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash 911682777, now seen corresponding path program 2 times [2022-07-21 08:34:47,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:47,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765653314] [2022-07-21 08:34:47,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:47,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:47,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:47,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765653314] [2022-07-21 08:34:47,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765653314] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:47,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:47,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:34:47,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297984407] [2022-07-21 08:34:47,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:47,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:34:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:47,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:34:47,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:34:47,310 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 183 [2022-07-21 08:34:47,311 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) [2022-07-21 08:34:47,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:47,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 183 [2022-07-21 08:34:47,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:48,037 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]) [2022-07-21 08:34:48,038 INFO L384 tUnfolder$Statistics]: this new event has 84 ancestors and is not cut-off event [2022-07-21 08:34:48,038 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is not cut-off event [2022-07-21 08:34:48,038 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is not cut-off event [2022-07-21 08:34:48,038 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is not cut-off event [2022-07-21 08:34:48,074 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]) [2022-07-21 08:34:48,074 INFO L384 tUnfolder$Statistics]: this new event has 85 ancestors and is not cut-off event [2022-07-21 08:34:48,074 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-07-21 08:34:48,074 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-07-21 08:34:48,075 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-07-21 08:34:48,135 INFO L382 tUnfolder$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]) [2022-07-21 08:34:48,135 INFO L384 tUnfolder$Statistics]: this new event has 87 ancestors and is not cut-off event [2022-07-21 08:34:48,135 INFO L387 tUnfolder$Statistics]: existing Event has 87 ancestors and is not cut-off event [2022-07-21 08:34:48,136 INFO L387 tUnfolder$Statistics]: existing Event has 87 ancestors and is not cut-off event [2022-07-21 08:34:48,136 INFO L387 tUnfolder$Statistics]: existing Event has 87 ancestors and is not cut-off event [2022-07-21 08:34:48,168 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]) [2022-07-21 08:34:48,169 INFO L384 tUnfolder$Statistics]: this new event has 88 ancestors and is not cut-off event [2022-07-21 08:34:48,169 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is not cut-off event [2022-07-21 08:34:48,169 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is not cut-off event [2022-07-21 08:34:48,169 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is not cut-off event [2022-07-21 08:34:48,320 INFO L382 tUnfolder$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]) [2022-07-21 08:34:48,320 INFO L384 tUnfolder$Statistics]: this new event has 91 ancestors and is not cut-off event [2022-07-21 08:34:48,320 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is not cut-off event [2022-07-21 08:34:48,320 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is not cut-off event [2022-07-21 08:34:48,320 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is not cut-off event [2022-07-21 08:34:48,400 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]) [2022-07-21 08:34:48,400 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is not cut-off event [2022-07-21 08:34:48,401 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is not cut-off event [2022-07-21 08:34:48,401 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is not cut-off event [2022-07-21 08:34:48,401 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is not cut-off event [2022-07-21 08:34:48,500 INFO L382 tUnfolder$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]) [2022-07-21 08:34:48,501 INFO L384 tUnfolder$Statistics]: this new event has 96 ancestors and is not cut-off event [2022-07-21 08:34:48,501 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is not cut-off event [2022-07-21 08:34:48,501 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is not cut-off event [2022-07-21 08:34:48,501 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is not cut-off event [2022-07-21 08:34:48,555 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]) [2022-07-21 08:34:48,555 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is not cut-off event [2022-07-21 08:34:48,556 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is not cut-off event [2022-07-21 08:34:48,556 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is not cut-off event [2022-07-21 08:34:48,556 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is not cut-off event [2022-07-21 08:34:48,689 INFO L129 PetriNetUnfolder]: 5633/11975 cut-off events. [2022-07-21 08:34:48,689 INFO L130 PetriNetUnfolder]: For 11615/11803 co-relation queries the response was YES. [2022-07-21 08:34:48,742 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. [2022-07-21 08:34:48,787 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 175 selfloop transitions, 18 changer transitions 10/335 dead transitions. [2022-07-21 08:34:48,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 335 transitions, 1649 flow [2022-07-21 08:34:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:34:48,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:34:48,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1381 transitions. [2022-07-21 08:34:48,791 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7546448087431694 [2022-07-21 08:34:48,791 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1381 transitions. [2022-07-21 08:34:48,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1381 transitions. [2022-07-21 08:34:48,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:48,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1381 transitions. [2022-07-21 08:34:48,795 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) [2022-07-21 08:34:48,798 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) [2022-07-21 08:34:48,798 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) [2022-07-21 08:34:48,798 INFO L186 Difference]: Start difference. First operand has 181 places, 205 transitions, 655 flow. Second operand 10 states and 1381 transitions. [2022-07-21 08:34:48,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 335 transitions, 1649 flow [2022-07-21 08:34:48,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 335 transitions, 1649 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:34:48,850 INFO L242 Difference]: Finished difference. Result has 195 places, 221 transitions, 771 flow [2022-07-21 08:34:48,851 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} [2022-07-21 08:34:48,852 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 35 predicate places. [2022-07-21 08:34:48,852 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 221 transitions, 771 flow [2022-07-21 08:34:48,853 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) [2022-07-21 08:34:48,853 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:48,853 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] [2022-07-21 08:34:48,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:34:48,854 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)] === [2022-07-21 08:34:48,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:48,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2053644825, now seen corresponding path program 1 times [2022-07-21 08:34:48,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:48,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037160475] [2022-07-21 08:34:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:48,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:48,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:48,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037160475] [2022-07-21 08:34:48,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037160475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:48,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:48,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:34:48,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561589871] [2022-07-21 08:34:48,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:48,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:34:48,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:48,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:34:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:34:48,958 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 183 [2022-07-21 08:34:48,959 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) [2022-07-21 08:34:48,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:48,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 183 [2022-07-21 08:34:48,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:49,628 INFO L129 PetriNetUnfolder]: 2049/5079 cut-off events. [2022-07-21 08:34:49,628 INFO L130 PetriNetUnfolder]: For 5450/5514 co-relation queries the response was YES. [2022-07-21 08:34:49,650 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. [2022-07-21 08:34:49,667 INFO L132 encePairwiseOnDemand]: 162/183 looper letters, 120 selfloop transitions, 37 changer transitions 0/298 dead transitions. [2022-07-21 08:34:49,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 298 transitions, 1417 flow [2022-07-21 08:34:49,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:34:49,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:34:49,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1468 transitions. [2022-07-21 08:34:49,671 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8021857923497268 [2022-07-21 08:34:49,671 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1468 transitions. [2022-07-21 08:34:49,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1468 transitions. [2022-07-21 08:34:49,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:49,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1468 transitions. [2022-07-21 08:34:49,674 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) [2022-07-21 08:34:49,676 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) [2022-07-21 08:34:49,676 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) [2022-07-21 08:34:49,676 INFO L186 Difference]: Start difference. First operand has 195 places, 221 transitions, 771 flow. Second operand 10 states and 1468 transitions. [2022-07-21 08:34:49,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 298 transitions, 1417 flow [2022-07-21 08:34:49,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 298 transitions, 1417 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-21 08:34:49,694 INFO L242 Difference]: Finished difference. Result has 209 places, 237 transitions, 1010 flow [2022-07-21 08:34:49,694 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} [2022-07-21 08:34:49,694 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 49 predicate places. [2022-07-21 08:34:49,695 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 237 transitions, 1010 flow [2022-07-21 08:34:49,695 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) [2022-07-21 08:34:49,695 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:49,695 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] [2022-07-21 08:34:49,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:34:49,696 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)] === [2022-07-21 08:34:49,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash 928253015, now seen corresponding path program 1 times [2022-07-21 08:34:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:49,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988829394] [2022-07-21 08:34:49,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:49,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:49,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:49,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988829394] [2022-07-21 08:34:49,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988829394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:49,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:49,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:34:49,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272957747] [2022-07-21 08:34:49,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:49,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:34:49,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:34:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:34:49,730 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-07-21 08:34:49,731 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) [2022-07-21 08:34:49,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:49,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-07-21 08:34:49,732 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:50,105 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)]) [2022-07-21 08:34:50,105 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-07-21 08:34:50,105 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,106 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,106 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,106 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)]) [2022-07-21 08:34:50,106 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-07-21 08:34:50,106 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,106 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,107 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,188 INFO L382 tUnfolder$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)]) [2022-07-21 08:34:50,188 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-21 08:34:50,188 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,188 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,188 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,188 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-21 08:34:50,189 INFO L382 tUnfolder$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)]) [2022-07-21 08:34:50,189 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-21 08:34:50,189 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,189 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,189 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-21 08:34:50,189 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,249 INFO L129 PetriNetUnfolder]: 1439/4562 cut-off events. [2022-07-21 08:34:50,249 INFO L130 PetriNetUnfolder]: For 5492/5750 co-relation queries the response was YES. [2022-07-21 08:34:50,279 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. [2022-07-21 08:34:50,298 INFO L132 encePairwiseOnDemand]: 181/183 looper letters, 73 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2022-07-21 08:34:50,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 258 transitions, 1286 flow [2022-07-21 08:34:50,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:34:50,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:34:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-07-21 08:34:50,300 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-07-21 08:34:50,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-07-21 08:34:50,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-07-21 08:34:50,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:50,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-07-21 08:34:50,302 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) [2022-07-21 08:34:50,303 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) [2022-07-21 08:34:50,303 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) [2022-07-21 08:34:50,303 INFO L186 Difference]: Start difference. First operand has 209 places, 237 transitions, 1010 flow. Second operand 3 states and 500 transitions. [2022-07-21 08:34:50,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 258 transitions, 1286 flow [2022-07-21 08:34:50,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 258 transitions, 1263 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:34:50,322 INFO L242 Difference]: Finished difference. Result has 208 places, 237 transitions, 994 flow [2022-07-21 08:34:50,323 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} [2022-07-21 08:34:50,323 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 48 predicate places. [2022-07-21 08:34:50,323 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 237 transitions, 994 flow [2022-07-21 08:34:50,324 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) [2022-07-21 08:34:50,324 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:50,324 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] [2022-07-21 08:34:50,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:34:50,324 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)] === [2022-07-21 08:34:50,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash 545156572, now seen corresponding path program 1 times [2022-07-21 08:34:50,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:50,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932745119] [2022-07-21 08:34:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:50,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:50,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:50,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932745119] [2022-07-21 08:34:50,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932745119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:50,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:50,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:34:50,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807158409] [2022-07-21 08:34:50,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:50,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:34:50,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:50,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:34:50,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:34:50,360 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-07-21 08:34:50,361 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) [2022-07-21 08:34:50,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:50,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-07-21 08:34:50,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:50,785 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)]) [2022-07-21 08:34:50,785 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-21 08:34:50,785 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-21 08:34:50,785 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,785 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,785 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)]) [2022-07-21 08:34:50,785 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-21 08:34:50,785 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-21 08:34:50,786 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,786 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-21 08:34:50,844 INFO L129 PetriNetUnfolder]: 1515/4859 cut-off events. [2022-07-21 08:34:50,844 INFO L130 PetriNetUnfolder]: For 5280/5543 co-relation queries the response was YES. [2022-07-21 08:34:50,867 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. [2022-07-21 08:34:50,881 INFO L132 encePairwiseOnDemand]: 181/183 looper letters, 70 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2022-07-21 08:34:50,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 258 transitions, 1265 flow [2022-07-21 08:34:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:34:50,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:34:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-07-21 08:34:50,883 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-07-21 08:34:50,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-07-21 08:34:50,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-07-21 08:34:50,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:50,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-07-21 08:34:50,884 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) [2022-07-21 08:34:50,885 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) [2022-07-21 08:34:50,885 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) [2022-07-21 08:34:50,886 INFO L186 Difference]: Start difference. First operand has 208 places, 237 transitions, 994 flow. Second operand 3 states and 500 transitions. [2022-07-21 08:34:50,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 258 transitions, 1265 flow [2022-07-21 08:34:50,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 258 transitions, 1264 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:34:50,908 INFO L242 Difference]: Finished difference. Result has 210 places, 237 transitions, 998 flow [2022-07-21 08:34:50,908 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} [2022-07-21 08:34:50,909 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 50 predicate places. [2022-07-21 08:34:50,909 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 237 transitions, 998 flow [2022-07-21 08:34:50,909 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) [2022-07-21 08:34:50,909 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:50,909 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] [2022-07-21 08:34:50,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:34:50,910 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)] === [2022-07-21 08:34:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:50,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1402509722, now seen corresponding path program 1 times [2022-07-21 08:34:50,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:50,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581622475] [2022-07-21 08:34:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:50,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:50,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:50,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:50,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581622475] [2022-07-21 08:34:50,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581622475] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:50,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:50,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:34:50,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971564632] [2022-07-21 08:34:50,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:50,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:34:50,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:50,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:34:50,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:34:50,946 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 183 [2022-07-21 08:34:50,947 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) [2022-07-21 08:34:50,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:50,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 183 [2022-07-21 08:34:50,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:51,520 INFO L129 PetriNetUnfolder]: 1766/5380 cut-off events. [2022-07-21 08:34:51,520 INFO L130 PetriNetUnfolder]: For 6303/6533 co-relation queries the response was YES. [2022-07-21 08:34:51,547 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. [2022-07-21 08:34:51,555 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 49 selfloop transitions, 2 changer transitions 43/237 dead transitions. [2022-07-21 08:34:51,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 237 transitions, 1140 flow [2022-07-21 08:34:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:34:51,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:34:51,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-07-21 08:34:51,556 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8943533697632058 [2022-07-21 08:34:51,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-07-21 08:34:51,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-07-21 08:34:51,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:51,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-07-21 08:34:51,558 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) [2022-07-21 08:34:51,559 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) [2022-07-21 08:34:51,559 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) [2022-07-21 08:34:51,559 INFO L186 Difference]: Start difference. First operand has 210 places, 237 transitions, 998 flow. Second operand 3 states and 491 transitions. [2022-07-21 08:34:51,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 237 transitions, 1140 flow [2022-07-21 08:34:51,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 237 transitions, 1131 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-21 08:34:51,578 INFO L242 Difference]: Finished difference. Result has 202 places, 181 transitions, 675 flow [2022-07-21 08:34:51,578 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} [2022-07-21 08:34:51,579 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 42 predicate places. [2022-07-21 08:34:51,579 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 181 transitions, 675 flow [2022-07-21 08:34:51,579 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) [2022-07-21 08:34:51,579 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:51,580 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] [2022-07-21 08:34:51,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:34:51,580 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)] === [2022-07-21 08:34:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:51,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1806226238, now seen corresponding path program 1 times [2022-07-21 08:34:51,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:51,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015397333] [2022-07-21 08:34:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:51,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:51,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:51,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015397333] [2022-07-21 08:34:51,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015397333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:51,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:51,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:34:51,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137979447] [2022-07-21 08:34:51,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:51,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:34:51,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:51,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:34:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:34:51,629 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 183 [2022-07-21 08:34:51,630 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) [2022-07-21 08:34:51,630 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:51,630 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 183 [2022-07-21 08:34:51,630 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:52,055 INFO L129 PetriNetUnfolder]: 887/2956 cut-off events. [2022-07-21 08:34:52,055 INFO L130 PetriNetUnfolder]: For 2616/2661 co-relation queries the response was YES. [2022-07-21 08:34:52,069 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. [2022-07-21 08:34:52,077 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 69 selfloop transitions, 25 changer transitions 5/236 dead transitions. [2022-07-21 08:34:52,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 236 transitions, 1146 flow [2022-07-21 08:34:52,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:34:52,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:34:52,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1118 transitions. [2022-07-21 08:34:52,081 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8727556596409055 [2022-07-21 08:34:52,081 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1118 transitions. [2022-07-21 08:34:52,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1118 transitions. [2022-07-21 08:34:52,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:52,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1118 transitions. [2022-07-21 08:34:52,084 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) [2022-07-21 08:34:52,085 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) [2022-07-21 08:34:52,086 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) [2022-07-21 08:34:52,086 INFO L186 Difference]: Start difference. First operand has 202 places, 181 transitions, 675 flow. Second operand 7 states and 1118 transitions. [2022-07-21 08:34:52,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 236 transitions, 1146 flow [2022-07-21 08:34:52,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 236 transitions, 1096 flow, removed 19 selfloop flow, removed 7 redundant places. [2022-07-21 08:34:52,097 INFO L242 Difference]: Finished difference. Result has 193 places, 196 transitions, 847 flow [2022-07-21 08:34:52,098 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} [2022-07-21 08:34:52,098 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 33 predicate places. [2022-07-21 08:34:52,098 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 196 transitions, 847 flow [2022-07-21 08:34:52,099 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) [2022-07-21 08:34:52,099 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:52,099 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] [2022-07-21 08:34:52,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:34:52,099 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)] === [2022-07-21 08:34:52,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:52,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2048247070, now seen corresponding path program 1 times [2022-07-21 08:34:52,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:52,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930033001] [2022-07-21 08:34:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:52,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:52,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:52,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930033001] [2022-07-21 08:34:52,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930033001] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:52,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:52,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:34:52,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442450855] [2022-07-21 08:34:52,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:52,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:34:52,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:52,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:34:52,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:34:52,128 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 183 [2022-07-21 08:34:52,128 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) [2022-07-21 08:34:52,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:52,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 183 [2022-07-21 08:34:52,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:52,345 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]) [2022-07-21 08:34:52,345 INFO L384 tUnfolder$Statistics]: this new event has 90 ancestors and is cut-off event [2022-07-21 08:34:52,345 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-21 08:34:52,345 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-21 08:34:52,345 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-07-21 08:34:52,388 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]) [2022-07-21 08:34:52,388 INFO L384 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-07-21 08:34:52,388 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-07-21 08:34:52,388 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-07-21 08:34:52,388 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-07-21 08:34:52,418 INFO L382 tUnfolder$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]) [2022-07-21 08:34:52,418 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is cut-off event [2022-07-21 08:34:52,418 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-07-21 08:34:52,418 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-21 08:34:52,418 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-21 08:34:52,436 INFO L129 PetriNetUnfolder]: 805/2891 cut-off events. [2022-07-21 08:34:52,436 INFO L130 PetriNetUnfolder]: For 4702/4780 co-relation queries the response was YES. [2022-07-21 08:34:52,449 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. [2022-07-21 08:34:52,453 INFO L132 encePairwiseOnDemand]: 181/183 looper letters, 60 selfloop transitions, 1 changer transitions 2/210 dead transitions. [2022-07-21 08:34:52,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 210 transitions, 1079 flow [2022-07-21 08:34:52,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:34:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:34:52,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2022-07-21 08:34:52,463 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-07-21 08:34:52,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2022-07-21 08:34:52,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2022-07-21 08:34:52,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:52,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2022-07-21 08:34:52,465 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) [2022-07-21 08:34:52,466 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) [2022-07-21 08:34:52,466 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) [2022-07-21 08:34:52,466 INFO L186 Difference]: Start difference. First operand has 193 places, 196 transitions, 847 flow. Second operand 3 states and 488 transitions. [2022-07-21 08:34:52,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 210 transitions, 1079 flow [2022-07-21 08:34:52,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 210 transitions, 1073 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-21 08:34:52,478 INFO L242 Difference]: Finished difference. Result has 194 places, 193 transitions, 837 flow [2022-07-21 08:34:52,478 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} [2022-07-21 08:34:52,480 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 34 predicate places. [2022-07-21 08:34:52,480 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 193 transitions, 837 flow [2022-07-21 08:34:52,480 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) [2022-07-21 08:34:52,481 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:52,481 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] [2022-07-21 08:34:52,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:34:52,481 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)] === [2022-07-21 08:34:52,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1693078370, now seen corresponding path program 1 times [2022-07-21 08:34:52,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:52,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806835541] [2022-07-21 08:34:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:52,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:52,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:52,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806835541] [2022-07-21 08:34:52,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806835541] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:52,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:52,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:34:52,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666759139] [2022-07-21 08:34:52,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:52,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:34:52,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:52,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:34:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:34:52,602 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-21 08:34:52,603 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) [2022-07-21 08:34:52,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:52,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-21 08:34:52,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:53,429 INFO L129 PetriNetUnfolder]: 1864/4561 cut-off events. [2022-07-21 08:34:53,429 INFO L130 PetriNetUnfolder]: For 9546/9625 co-relation queries the response was YES. [2022-07-21 08:34:53,449 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. [2022-07-21 08:34:53,459 INFO L132 encePairwiseOnDemand]: 167/183 looper letters, 133 selfloop transitions, 52 changer transitions 9/304 dead transitions. [2022-07-21 08:34:53,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 304 transitions, 1959 flow [2022-07-21 08:34:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:34:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:34:53,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1493 transitions. [2022-07-21 08:34:53,463 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.741679085941381 [2022-07-21 08:34:53,463 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1493 transitions. [2022-07-21 08:34:53,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1493 transitions. [2022-07-21 08:34:53,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:53,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1493 transitions. [2022-07-21 08:34:53,466 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) [2022-07-21 08:34:53,469 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) [2022-07-21 08:34:53,470 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) [2022-07-21 08:34:53,470 INFO L186 Difference]: Start difference. First operand has 194 places, 193 transitions, 837 flow. Second operand 11 states and 1493 transitions. [2022-07-21 08:34:53,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 304 transitions, 1959 flow [2022-07-21 08:34:53,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 304 transitions, 1958 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:34:53,504 INFO L242 Difference]: Finished difference. Result has 207 places, 223 transitions, 1342 flow [2022-07-21 08:34:53,505 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} [2022-07-21 08:34:53,505 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 47 predicate places. [2022-07-21 08:34:53,505 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 223 transitions, 1342 flow [2022-07-21 08:34:53,506 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) [2022-07-21 08:34:53,506 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:53,506 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] [2022-07-21 08:34:53,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:34:53,507 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)] === [2022-07-21 08:34:53,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash 523705238, now seen corresponding path program 2 times [2022-07-21 08:34:53,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:53,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491449745] [2022-07-21 08:34:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:53,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:53,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:53,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:53,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491449745] [2022-07-21 08:34:53,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491449745] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:53,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:53,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:34:53,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523229122] [2022-07-21 08:34:53,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:53,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:34:53,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:53,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:34:53,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:34:53,607 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-21 08:34:53,608 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) [2022-07-21 08:34:53,608 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:53,608 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-21 08:34:53,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:54,336 INFO L129 PetriNetUnfolder]: 1929/4784 cut-off events. [2022-07-21 08:34:54,336 INFO L130 PetriNetUnfolder]: For 14272/14353 co-relation queries the response was YES. [2022-07-21 08:34:54,357 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. [2022-07-21 08:34:54,365 INFO L132 encePairwiseOnDemand]: 166/183 looper letters, 133 selfloop transitions, 75 changer transitions 33/351 dead transitions. [2022-07-21 08:34:54,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 351 transitions, 2826 flow [2022-07-21 08:34:54,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 08:34:54,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-21 08:34:54,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1753 transitions. [2022-07-21 08:34:54,370 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7368642286675073 [2022-07-21 08:34:54,370 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1753 transitions. [2022-07-21 08:34:54,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1753 transitions. [2022-07-21 08:34:54,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:54,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1753 transitions. [2022-07-21 08:34:54,374 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) [2022-07-21 08:34:54,376 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) [2022-07-21 08:34:54,377 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) [2022-07-21 08:34:54,377 INFO L186 Difference]: Start difference. First operand has 207 places, 223 transitions, 1342 flow. Second operand 13 states and 1753 transitions. [2022-07-21 08:34:54,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 351 transitions, 2826 flow [2022-07-21 08:34:54,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 351 transitions, 2749 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-07-21 08:34:54,420 INFO L242 Difference]: Finished difference. Result has 219 places, 243 transitions, 1773 flow [2022-07-21 08:34:54,420 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} [2022-07-21 08:34:54,421 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 59 predicate places. [2022-07-21 08:34:54,421 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 243 transitions, 1773 flow [2022-07-21 08:34:54,421 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) [2022-07-21 08:34:54,421 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:54,422 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] [2022-07-21 08:34:54,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:34:54,422 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)] === [2022-07-21 08:34:54,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:54,422 INFO L85 PathProgramCache]: Analyzing trace with hash 131143178, now seen corresponding path program 1 times [2022-07-21 08:34:54,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:54,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079145076] [2022-07-21 08:34:54,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:54,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:54,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:54,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079145076] [2022-07-21 08:34:54,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079145076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:54,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:54,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:34:54,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175057465] [2022-07-21 08:34:54,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:54,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:34:54,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:34:54,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:34:54,555 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-21 08:34:54,562 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) [2022-07-21 08:34:54,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:54,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-21 08:34:54,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:55,319 INFO L129 PetriNetUnfolder]: 1659/4294 cut-off events. [2022-07-21 08:34:55,320 INFO L130 PetriNetUnfolder]: For 17339/17459 co-relation queries the response was YES. [2022-07-21 08:34:55,344 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. [2022-07-21 08:34:55,353 INFO L132 encePairwiseOnDemand]: 169/183 looper letters, 143 selfloop transitions, 65 changer transitions 7/325 dead transitions. [2022-07-21 08:34:55,353 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 325 transitions, 2692 flow [2022-07-21 08:34:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:34:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:34:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1861 transitions. [2022-07-21 08:34:55,357 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7263856362217018 [2022-07-21 08:34:55,357 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1861 transitions. [2022-07-21 08:34:55,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1861 transitions. [2022-07-21 08:34:55,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:55,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1861 transitions. [2022-07-21 08:34:55,361 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) [2022-07-21 08:34:55,364 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) [2022-07-21 08:34:55,364 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) [2022-07-21 08:34:55,364 INFO L186 Difference]: Start difference. First operand has 219 places, 243 transitions, 1773 flow. Second operand 14 states and 1861 transitions. [2022-07-21 08:34:55,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 325 transitions, 2692 flow [2022-07-21 08:34:55,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 325 transitions, 2638 flow, removed 23 selfloop flow, removed 3 redundant places. [2022-07-21 08:34:55,427 INFO L242 Difference]: Finished difference. Result has 232 places, 252 transitions, 1946 flow [2022-07-21 08:34:55,428 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} [2022-07-21 08:34:55,428 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 72 predicate places. [2022-07-21 08:34:55,428 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 252 transitions, 1946 flow [2022-07-21 08:34:55,429 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) [2022-07-21 08:34:55,429 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:55,429 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] [2022-07-21 08:34:55,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:34:55,429 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)] === [2022-07-21 08:34:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash 804789034, now seen corresponding path program 3 times [2022-07-21 08:34:55,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:55,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244933694] [2022-07-21 08:34:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:55,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:55,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:55,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244933694] [2022-07-21 08:34:55,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244933694] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:55,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:55,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:34:55,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392384517] [2022-07-21 08:34:55,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:55,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:34:55,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:34:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:34:55,537 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-21 08:34:55,538 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) [2022-07-21 08:34:55,538 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:55,538 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-21 08:34:55,538 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:56,214 INFO L129 PetriNetUnfolder]: 1591/4144 cut-off events. [2022-07-21 08:34:56,215 INFO L130 PetriNetUnfolder]: For 17855/17994 co-relation queries the response was YES. [2022-07-21 08:34:56,273 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. [2022-07-21 08:34:56,280 INFO L132 encePairwiseOnDemand]: 166/183 looper letters, 157 selfloop transitions, 74 changer transitions 14/355 dead transitions. [2022-07-21 08:34:56,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 355 transitions, 3115 flow [2022-07-21 08:34:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:34:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:34:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1633 transitions. [2022-07-21 08:34:56,283 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7436247723132969 [2022-07-21 08:34:56,284 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1633 transitions. [2022-07-21 08:34:56,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1633 transitions. [2022-07-21 08:34:56,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:56,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1633 transitions. [2022-07-21 08:34:56,287 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) [2022-07-21 08:34:56,289 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) [2022-07-21 08:34:56,289 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) [2022-07-21 08:34:56,289 INFO L186 Difference]: Start difference. First operand has 232 places, 252 transitions, 1946 flow. Second operand 12 states and 1633 transitions. [2022-07-21 08:34:56,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 355 transitions, 3115 flow [2022-07-21 08:34:56,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 355 transitions, 3050 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-21 08:34:56,338 INFO L242 Difference]: Finished difference. Result has 242 places, 260 transitions, 2212 flow [2022-07-21 08:34:56,339 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} [2022-07-21 08:34:56,339 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 82 predicate places. [2022-07-21 08:34:56,339 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 260 transitions, 2212 flow [2022-07-21 08:34:56,340 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) [2022-07-21 08:34:56,340 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:56,340 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] [2022-07-21 08:34:56,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:34:56,340 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)] === [2022-07-21 08:34:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:56,341 INFO L85 PathProgramCache]: Analyzing trace with hash 799660206, now seen corresponding path program 2 times [2022-07-21 08:34:56,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:56,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116303101] [2022-07-21 08:34:56,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:56,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:56,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:56,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116303101] [2022-07-21 08:34:56,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116303101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:56,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:56,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:34:56,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865398018] [2022-07-21 08:34:56,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:56,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:34:56,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:56,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:34:56,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:34:56,434 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-21 08:34:56,435 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) [2022-07-21 08:34:56,435 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:56,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-21 08:34:56,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:57,229 INFO L129 PetriNetUnfolder]: 1564/4153 cut-off events. [2022-07-21 08:34:57,229 INFO L130 PetriNetUnfolder]: For 22151/22308 co-relation queries the response was YES. [2022-07-21 08:34:57,256 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. [2022-07-21 08:34:57,263 INFO L132 encePairwiseOnDemand]: 162/183 looper letters, 159 selfloop transitions, 76 changer transitions 28/373 dead transitions. [2022-07-21 08:34:57,264 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 373 transitions, 3508 flow [2022-07-21 08:34:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:34:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:34:57,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2145 transitions. [2022-07-21 08:34:57,266 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7325819672131147 [2022-07-21 08:34:57,267 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2145 transitions. [2022-07-21 08:34:57,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2145 transitions. [2022-07-21 08:34:57,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:57,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2145 transitions. [2022-07-21 08:34:57,270 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) [2022-07-21 08:34:57,273 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) [2022-07-21 08:34:57,273 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) [2022-07-21 08:34:57,273 INFO L186 Difference]: Start difference. First operand has 242 places, 260 transitions, 2212 flow. Second operand 16 states and 2145 transitions. [2022-07-21 08:34:57,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 373 transitions, 3508 flow [2022-07-21 08:34:57,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 373 transitions, 3401 flow, removed 32 selfloop flow, removed 5 redundant places. [2022-07-21 08:34:57,345 INFO L242 Difference]: Finished difference. Result has 257 places, 263 transitions, 2379 flow [2022-07-21 08:34:57,346 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} [2022-07-21 08:34:57,346 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 97 predicate places. [2022-07-21 08:34:57,346 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 263 transitions, 2379 flow [2022-07-21 08:34:57,347 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) [2022-07-21 08:34:57,347 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:57,347 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] [2022-07-21 08:34:57,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:34:57,347 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)] === [2022-07-21 08:34:57,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:57,348 INFO L85 PathProgramCache]: Analyzing trace with hash 327729458, now seen corresponding path program 3 times [2022-07-21 08:34:57,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:57,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396929118] [2022-07-21 08:34:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:57,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:57,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:57,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396929118] [2022-07-21 08:34:57,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396929118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:57,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:57,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:34:57,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435161355] [2022-07-21 08:34:57,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:57,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:34:57,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:57,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:34:57,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:34:57,444 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-21 08:34:57,445 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) [2022-07-21 08:34:57,445 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:57,445 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-21 08:34:57,445 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:58,240 INFO L129 PetriNetUnfolder]: 1510/4005 cut-off events. [2022-07-21 08:34:58,241 INFO L130 PetriNetUnfolder]: For 24662/24782 co-relation queries the response was YES. [2022-07-21 08:34:58,265 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. [2022-07-21 08:34:58,272 INFO L132 encePairwiseOnDemand]: 169/183 looper letters, 138 selfloop transitions, 82 changer transitions 7/337 dead transitions. [2022-07-21 08:34:58,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 337 transitions, 3271 flow [2022-07-21 08:34:58,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:34:58,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:34:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2108 transitions. [2022-07-21 08:34:58,285 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7199453551912568 [2022-07-21 08:34:58,285 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2108 transitions. [2022-07-21 08:34:58,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2108 transitions. [2022-07-21 08:34:58,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:58,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2108 transitions. [2022-07-21 08:34:58,288 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) [2022-07-21 08:34:58,290 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) [2022-07-21 08:34:58,291 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) [2022-07-21 08:34:58,291 INFO L186 Difference]: Start difference. First operand has 257 places, 263 transitions, 2379 flow. Second operand 16 states and 2108 transitions. [2022-07-21 08:34:58,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 337 transitions, 3271 flow [2022-07-21 08:34:58,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 337 transitions, 3183 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-07-21 08:34:58,382 INFO L242 Difference]: Finished difference. Result has 268 places, 267 transitions, 2534 flow [2022-07-21 08:34:58,382 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} [2022-07-21 08:34:58,383 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 108 predicate places. [2022-07-21 08:34:58,383 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 267 transitions, 2534 flow [2022-07-21 08:34:58,383 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) [2022-07-21 08:34:58,383 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:58,383 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] [2022-07-21 08:34:58,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:34:58,384 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)] === [2022-07-21 08:34:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:58,384 INFO L85 PathProgramCache]: Analyzing trace with hash 724432640, now seen corresponding path program 1 times [2022-07-21 08:34:58,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:58,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282415051] [2022-07-21 08:34:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:58,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:58,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:58,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282415051] [2022-07-21 08:34:58,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282415051] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:58,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:58,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:34:58,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18064142] [2022-07-21 08:34:58,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:58,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:34:58,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:58,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:34:58,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:34:58,486 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-21 08:34:58,487 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) [2022-07-21 08:34:58,487 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:58,487 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-21 08:34:58,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:34:59,184 INFO L129 PetriNetUnfolder]: 1488/4058 cut-off events. [2022-07-21 08:34:59,184 INFO L130 PetriNetUnfolder]: For 27735/27847 co-relation queries the response was YES. [2022-07-21 08:34:59,204 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. [2022-07-21 08:34:59,210 INFO L132 encePairwiseOnDemand]: 166/183 looper letters, 175 selfloop transitions, 65 changer transitions 36/386 dead transitions. [2022-07-21 08:34:59,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 386 transitions, 4047 flow [2022-07-21 08:34:59,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:34:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:34:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1639 transitions. [2022-07-21 08:34:59,212 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7463570127504554 [2022-07-21 08:34:59,212 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1639 transitions. [2022-07-21 08:34:59,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1639 transitions. [2022-07-21 08:34:59,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:34:59,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1639 transitions. [2022-07-21 08:34:59,215 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) [2022-07-21 08:34:59,216 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) [2022-07-21 08:34:59,217 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) [2022-07-21 08:34:59,217 INFO L186 Difference]: Start difference. First operand has 268 places, 267 transitions, 2534 flow. Second operand 12 states and 1639 transitions. [2022-07-21 08:34:59,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 386 transitions, 4047 flow [2022-07-21 08:34:59,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 386 transitions, 3877 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-07-21 08:34:59,303 INFO L242 Difference]: Finished difference. Result has 275 places, 275 transitions, 2698 flow [2022-07-21 08:34:59,303 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} [2022-07-21 08:34:59,304 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 115 predicate places. [2022-07-21 08:34:59,304 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 275 transitions, 2698 flow [2022-07-21 08:34:59,304 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) [2022-07-21 08:34:59,304 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:34:59,305 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] [2022-07-21 08:34:59,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:34:59,305 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)] === [2022-07-21 08:34:59,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:34:59,305 INFO L85 PathProgramCache]: Analyzing trace with hash 399981210, now seen corresponding path program 1 times [2022-07-21 08:34:59,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:34:59,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625594848] [2022-07-21 08:34:59,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:34:59,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:34:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:34:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:34:59,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:34:59,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625594848] [2022-07-21 08:34:59,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625594848] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:34:59,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:34:59,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:34:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258337339] [2022-07-21 08:34:59,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:34:59,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:34:59,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:34:59,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:34:59,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:34:59,423 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-21 08:34:59,423 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) [2022-07-21 08:34:59,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:34:59,424 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-21 08:34:59,424 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:00,220 INFO L129 PetriNetUnfolder]: 1256/3667 cut-off events. [2022-07-21 08:35:00,220 INFO L130 PetriNetUnfolder]: For 29670/29782 co-relation queries the response was YES. [2022-07-21 08:35:00,244 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. [2022-07-21 08:35:00,252 INFO L132 encePairwiseOnDemand]: 162/183 looper letters, 162 selfloop transitions, 76 changer transitions 36/384 dead transitions. [2022-07-21 08:35:00,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 384 transitions, 4022 flow [2022-07-21 08:35:00,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 08:35:00,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-21 08:35:00,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2146 transitions. [2022-07-21 08:35:00,262 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7329234972677595 [2022-07-21 08:35:00,262 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2146 transitions. [2022-07-21 08:35:00,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2146 transitions. [2022-07-21 08:35:00,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:00,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2146 transitions. [2022-07-21 08:35:00,265 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) [2022-07-21 08:35:00,267 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) [2022-07-21 08:35:00,267 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) [2022-07-21 08:35:00,267 INFO L186 Difference]: Start difference. First operand has 275 places, 275 transitions, 2698 flow. Second operand 16 states and 2146 transitions. [2022-07-21 08:35:00,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 384 transitions, 4022 flow [2022-07-21 08:35:00,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 384 transitions, 3858 flow, removed 40 selfloop flow, removed 5 redundant places. [2022-07-21 08:35:00,359 INFO L242 Difference]: Finished difference. Result has 289 places, 277 transitions, 2788 flow [2022-07-21 08:35:00,359 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} [2022-07-21 08:35:00,359 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 129 predicate places. [2022-07-21 08:35:00,360 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 277 transitions, 2788 flow [2022-07-21 08:35:00,360 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) [2022-07-21 08:35:00,360 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:00,360 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] [2022-07-21 08:35:00,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:35:00,360 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)] === [2022-07-21 08:35:00,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:00,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1076776630, now seen corresponding path program 2 times [2022-07-21 08:35:00,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:00,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050706290] [2022-07-21 08:35:00,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:00,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:00,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:00,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050706290] [2022-07-21 08:35:00,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050706290] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:00,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:00,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 08:35:00,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776199085] [2022-07-21 08:35:00,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:00,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 08:35:00,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:00,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 08:35:00,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 08:35:00,482 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-21 08:35:00,483 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) [2022-07-21 08:35:00,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:00,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-21 08:35:00,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:01,145 INFO L129 PetriNetUnfolder]: 1179/3402 cut-off events. [2022-07-21 08:35:01,145 INFO L130 PetriNetUnfolder]: For 32410/32457 co-relation queries the response was YES. [2022-07-21 08:35:01,168 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. [2022-07-21 08:35:01,176 INFO L132 encePairwiseOnDemand]: 167/183 looper letters, 157 selfloop transitions, 74 changer transitions 16/357 dead transitions. [2022-07-21 08:35:01,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 357 transitions, 3883 flow [2022-07-21 08:35:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:35:01,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:35:01,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1618 transitions. [2022-07-21 08:35:01,178 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7367941712204007 [2022-07-21 08:35:01,178 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1618 transitions. [2022-07-21 08:35:01,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1618 transitions. [2022-07-21 08:35:01,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:01,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1618 transitions. [2022-07-21 08:35:01,180 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) [2022-07-21 08:35:01,182 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) [2022-07-21 08:35:01,182 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) [2022-07-21 08:35:01,182 INFO L186 Difference]: Start difference. First operand has 289 places, 277 transitions, 2788 flow. Second operand 12 states and 1618 transitions. [2022-07-21 08:35:01,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 357 transitions, 3883 flow [2022-07-21 08:35:01,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 357 transitions, 3720 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-07-21 08:35:01,269 INFO L242 Difference]: Finished difference. Result has 293 places, 279 transitions, 2910 flow [2022-07-21 08:35:01,269 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} [2022-07-21 08:35:01,270 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 133 predicate places. [2022-07-21 08:35:01,270 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 279 transitions, 2910 flow [2022-07-21 08:35:01,270 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) [2022-07-21 08:35:01,270 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:01,270 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] [2022-07-21 08:35:01,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:35:01,271 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)] === [2022-07-21 08:35:01,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:01,271 INFO L85 PathProgramCache]: Analyzing trace with hash -180520246, now seen corresponding path program 2 times [2022-07-21 08:35:01,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:01,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115514045] [2022-07-21 08:35:01,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:01,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:01,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:01,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115514045] [2022-07-21 08:35:01,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115514045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:01,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:01,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:35:01,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208239341] [2022-07-21 08:35:01,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:01,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:35:01,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:01,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:35:01,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:35:01,377 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-21 08:35:01,378 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) [2022-07-21 08:35:01,378 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:01,378 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-21 08:35:01,378 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:02,039 INFO L129 PetriNetUnfolder]: 1013/3084 cut-off events. [2022-07-21 08:35:02,039 INFO L130 PetriNetUnfolder]: For 31080/31196 co-relation queries the response was YES. [2022-07-21 08:35:02,060 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. [2022-07-21 08:35:02,066 INFO L132 encePairwiseOnDemand]: 169/183 looper letters, 147 selfloop transitions, 77 changer transitions 19/348 dead transitions. [2022-07-21 08:35:02,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 348 transitions, 3818 flow [2022-07-21 08:35:02,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:35:02,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:35:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1982 transitions. [2022-07-21 08:35:02,068 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.722040072859745 [2022-07-21 08:35:02,068 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1982 transitions. [2022-07-21 08:35:02,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1982 transitions. [2022-07-21 08:35:02,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:02,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1982 transitions. [2022-07-21 08:35:02,071 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) [2022-07-21 08:35:02,073 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) [2022-07-21 08:35:02,073 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) [2022-07-21 08:35:02,073 INFO L186 Difference]: Start difference. First operand has 293 places, 279 transitions, 2910 flow. Second operand 15 states and 1982 transitions. [2022-07-21 08:35:02,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 348 transitions, 3818 flow [2022-07-21 08:35:02,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 348 transitions, 3738 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-07-21 08:35:02,156 INFO L242 Difference]: Finished difference. Result has 299 places, 265 transitions, 2857 flow [2022-07-21 08:35:02,156 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} [2022-07-21 08:35:02,156 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 139 predicate places. [2022-07-21 08:35:02,156 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 265 transitions, 2857 flow [2022-07-21 08:35:02,157 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) [2022-07-21 08:35:02,157 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:02,157 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] [2022-07-21 08:35:02,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:35:02,157 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)] === [2022-07-21 08:35:02,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:02,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1185028197, now seen corresponding path program 1 times [2022-07-21 08:35:02,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:02,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574524440] [2022-07-21 08:35:02,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:02,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:02,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:02,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:02,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574524440] [2022-07-21 08:35:02,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574524440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:02,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:02,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:35:02,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254920063] [2022-07-21 08:35:02,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:02,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:35:02,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:02,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:35:02,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:35:02,218 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-21 08:35:02,219 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) [2022-07-21 08:35:02,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:02,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-21 08:35:02,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:02,642 INFO L129 PetriNetUnfolder]: 642/2286 cut-off events. [2022-07-21 08:35:02,642 INFO L130 PetriNetUnfolder]: For 21042/21082 co-relation queries the response was YES. [2022-07-21 08:35:02,661 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. [2022-07-21 08:35:02,666 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 108 selfloop transitions, 37 changer transitions 60/340 dead transitions. [2022-07-21 08:35:02,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 340 transitions, 3843 flow [2022-07-21 08:35:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:35:02,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:35:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1633 transitions. [2022-07-21 08:35:02,668 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8112270243417784 [2022-07-21 08:35:02,668 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1633 transitions. [2022-07-21 08:35:02,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1633 transitions. [2022-07-21 08:35:02,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:02,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1633 transitions. [2022-07-21 08:35:02,671 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) [2022-07-21 08:35:02,673 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) [2022-07-21 08:35:02,673 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) [2022-07-21 08:35:02,674 INFO L186 Difference]: Start difference. First operand has 299 places, 265 transitions, 2857 flow. Second operand 11 states and 1633 transitions. [2022-07-21 08:35:02,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 340 transitions, 3843 flow [2022-07-21 08:35:02,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 340 transitions, 3512 flow, removed 31 selfloop flow, removed 20 redundant places. [2022-07-21 08:35:02,725 INFO L242 Difference]: Finished difference. Result has 287 places, 238 transitions, 2229 flow [2022-07-21 08:35:02,725 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} [2022-07-21 08:35:02,726 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 127 predicate places. [2022-07-21 08:35:02,726 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 238 transitions, 2229 flow [2022-07-21 08:35:02,726 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) [2022-07-21 08:35:02,726 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:02,726 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] [2022-07-21 08:35:02,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:35:02,726 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)] === [2022-07-21 08:35:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash -848613193, now seen corresponding path program 2 times [2022-07-21 08:35:02,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:02,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577421174] [2022-07-21 08:35:02,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:02,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:02,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:02,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577421174] [2022-07-21 08:35:02,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577421174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:02,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:02,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:35:02,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748431797] [2022-07-21 08:35:02,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:02,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:35:02,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:02,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:35:02,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:35:02,791 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-21 08:35:02,792 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) [2022-07-21 08:35:02,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:02,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-21 08:35:02,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:03,150 INFO L129 PetriNetUnfolder]: 559/1905 cut-off events. [2022-07-21 08:35:03,150 INFO L130 PetriNetUnfolder]: For 15355/15423 co-relation queries the response was YES. [2022-07-21 08:35:03,164 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. [2022-07-21 08:35:03,168 INFO L132 encePairwiseOnDemand]: 171/183 looper letters, 110 selfloop transitions, 45 changer transitions 27/317 dead transitions. [2022-07-21 08:35:03,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 317 transitions, 3294 flow [2022-07-21 08:35:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:35:03,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:35:03,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1769 transitions. [2022-07-21 08:35:03,170 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2022-07-21 08:35:03,170 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1769 transitions. [2022-07-21 08:35:03,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1769 transitions. [2022-07-21 08:35:03,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:03,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1769 transitions. [2022-07-21 08:35:03,172 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) [2022-07-21 08:35:03,173 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) [2022-07-21 08:35:03,173 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) [2022-07-21 08:35:03,173 INFO L186 Difference]: Start difference. First operand has 287 places, 238 transitions, 2229 flow. Second operand 12 states and 1769 transitions. [2022-07-21 08:35:03,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 317 transitions, 3294 flow [2022-07-21 08:35:03,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 317 transitions, 2902 flow, removed 48 selfloop flow, removed 29 redundant places. [2022-07-21 08:35:03,206 INFO L242 Difference]: Finished difference. Result has 275 places, 250 transitions, 2203 flow [2022-07-21 08:35:03,206 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} [2022-07-21 08:35:03,207 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 115 predicate places. [2022-07-21 08:35:03,207 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 250 transitions, 2203 flow [2022-07-21 08:35:03,207 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) [2022-07-21 08:35:03,207 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:03,207 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] [2022-07-21 08:35:03,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:35:03,208 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)] === [2022-07-21 08:35:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:03,208 INFO L85 PathProgramCache]: Analyzing trace with hash -373271357, now seen corresponding path program 3 times [2022-07-21 08:35:03,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:03,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887458064] [2022-07-21 08:35:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:03,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:03,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887458064] [2022-07-21 08:35:03,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887458064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:03,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:03,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:35:03,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087901951] [2022-07-21 08:35:03,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:03,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:35:03,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:03,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:35:03,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:35:03,305 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-21 08:35:03,305 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) [2022-07-21 08:35:03,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:03,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-21 08:35:03,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:03,648 INFO L129 PetriNetUnfolder]: 579/2074 cut-off events. [2022-07-21 08:35:03,648 INFO L130 PetriNetUnfolder]: For 13499/13584 co-relation queries the response was YES. [2022-07-21 08:35:03,661 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. [2022-07-21 08:35:03,667 INFO L132 encePairwiseOnDemand]: 172/183 looper letters, 105 selfloop transitions, 52 changer transitions 42/334 dead transitions. [2022-07-21 08:35:03,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 334 transitions, 3294 flow [2022-07-21 08:35:03,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:35:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:35:03,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1773 transitions. [2022-07-21 08:35:03,669 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8073770491803278 [2022-07-21 08:35:03,670 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1773 transitions. [2022-07-21 08:35:03,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1773 transitions. [2022-07-21 08:35:03,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:03,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1773 transitions. [2022-07-21 08:35:03,672 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) [2022-07-21 08:35:03,674 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) [2022-07-21 08:35:03,674 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) [2022-07-21 08:35:03,674 INFO L186 Difference]: Start difference. First operand has 275 places, 250 transitions, 2203 flow. Second operand 12 states and 1773 transitions. [2022-07-21 08:35:03,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 334 transitions, 3294 flow [2022-07-21 08:35:03,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 334 transitions, 3220 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-07-21 08:35:03,710 INFO L242 Difference]: Finished difference. Result has 287 places, 256 transitions, 2359 flow [2022-07-21 08:35:03,710 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} [2022-07-21 08:35:03,711 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 127 predicate places. [2022-07-21 08:35:03,711 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 256 transitions, 2359 flow [2022-07-21 08:35:03,711 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) [2022-07-21 08:35:03,711 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:03,711 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] [2022-07-21 08:35:03,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:35:03,712 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)] === [2022-07-21 08:35:03,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1745939257, now seen corresponding path program 4 times [2022-07-21 08:35:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:03,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773139058] [2022-07-21 08:35:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:03,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:03,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773139058] [2022-07-21 08:35:03,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773139058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:03,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:03,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:35:03,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597719378] [2022-07-21 08:35:03,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:03,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:35:03,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:03,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:35:03,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:35:03,745 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 183 [2022-07-21 08:35:03,745 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) [2022-07-21 08:35:03,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:03,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 183 [2022-07-21 08:35:03,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:04,015 INFO L129 PetriNetUnfolder]: 458/2031 cut-off events. [2022-07-21 08:35:04,015 INFO L130 PetriNetUnfolder]: For 15436/15532 co-relation queries the response was YES. [2022-07-21 08:35:04,024 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. [2022-07-21 08:35:04,027 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 93 selfloop transitions, 10 changer transitions 7/279 dead transitions. [2022-07-21 08:35:04,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 279 transitions, 2798 flow [2022-07-21 08:35:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:35:04,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:35:04,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2022-07-21 08:35:04,028 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8784153005464481 [2022-07-21 08:35:04,028 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2022-07-21 08:35:04,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2022-07-21 08:35:04,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:04,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2022-07-21 08:35:04,029 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) [2022-07-21 08:35:04,029 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) [2022-07-21 08:35:04,029 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) [2022-07-21 08:35:04,029 INFO L186 Difference]: Start difference. First operand has 287 places, 256 transitions, 2359 flow. Second operand 4 states and 643 transitions. [2022-07-21 08:35:04,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 279 transitions, 2798 flow [2022-07-21 08:35:04,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 279 transitions, 2674 flow, removed 11 selfloop flow, removed 8 redundant places. [2022-07-21 08:35:04,057 INFO L242 Difference]: Finished difference. Result has 284 places, 255 transitions, 2275 flow [2022-07-21 08:35:04,057 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} [2022-07-21 08:35:04,057 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 124 predicate places. [2022-07-21 08:35:04,057 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 255 transitions, 2275 flow [2022-07-21 08:35:04,058 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) [2022-07-21 08:35:04,058 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:04,058 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] [2022-07-21 08:35:04,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:35:04,058 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)] === [2022-07-21 08:35:04,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:04,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1448459419, now seen corresponding path program 5 times [2022-07-21 08:35:04,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:04,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520310913] [2022-07-21 08:35:04,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:04,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:04,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:04,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520310913] [2022-07-21 08:35:04,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520310913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:04,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:04,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:35:04,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018817817] [2022-07-21 08:35:04,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:04,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:35:04,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:04,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:35:04,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:35:04,144 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-21 08:35:04,145 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) [2022-07-21 08:35:04,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:04,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-21 08:35:04,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:04,571 INFO L129 PetriNetUnfolder]: 535/2116 cut-off events. [2022-07-21 08:35:04,571 INFO L130 PetriNetUnfolder]: For 15302/15465 co-relation queries the response was YES. [2022-07-21 08:35:04,583 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. [2022-07-21 08:35:04,587 INFO L132 encePairwiseOnDemand]: 172/183 looper letters, 100 selfloop transitions, 52 changer transitions 50/337 dead transitions. [2022-07-21 08:35:04,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 337 transitions, 3472 flow [2022-07-21 08:35:04,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:35:04,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:35:04,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2052 transitions. [2022-07-21 08:35:04,589 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8009367681498829 [2022-07-21 08:35:04,589 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2052 transitions. [2022-07-21 08:35:04,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2052 transitions. [2022-07-21 08:35:04,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:04,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2052 transitions. [2022-07-21 08:35:04,591 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) [2022-07-21 08:35:04,593 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) [2022-07-21 08:35:04,593 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) [2022-07-21 08:35:04,593 INFO L186 Difference]: Start difference. First operand has 284 places, 255 transitions, 2275 flow. Second operand 14 states and 2052 transitions. [2022-07-21 08:35:04,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 337 transitions, 3472 flow [2022-07-21 08:35:04,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 337 transitions, 3400 flow, removed 27 selfloop flow, removed 4 redundant places. [2022-07-21 08:35:04,626 INFO L242 Difference]: Finished difference. Result has 299 places, 255 transitions, 2431 flow [2022-07-21 08:35:04,626 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} [2022-07-21 08:35:04,627 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 139 predicate places. [2022-07-21 08:35:04,627 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 255 transitions, 2431 flow [2022-07-21 08:35:04,627 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) [2022-07-21 08:35:04,627 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:04,627 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] [2022-07-21 08:35:04,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:35:04,628 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)] === [2022-07-21 08:35:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2093478427, now seen corresponding path program 1 times [2022-07-21 08:35:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:04,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304930718] [2022-07-21 08:35:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:04,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:04,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:04,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:04,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304930718] [2022-07-21 08:35:04,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304930718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:04,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:04,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:35:04,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89809849] [2022-07-21 08:35:04,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:04,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:35:04,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:04,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:35:04,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:35:04,711 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-21 08:35:04,712 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) [2022-07-21 08:35:04,712 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:04,712 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-21 08:35:04,712 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:05,046 INFO L129 PetriNetUnfolder]: 461/1923 cut-off events. [2022-07-21 08:35:05,046 INFO L130 PetriNetUnfolder]: For 16276/16448 co-relation queries the response was YES. [2022-07-21 08:35:05,057 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. [2022-07-21 08:35:05,060 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 92 selfloop transitions, 39 changer transitions 47/304 dead transitions. [2022-07-21 08:35:05,060 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 304 transitions, 3211 flow [2022-07-21 08:35:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:35:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:35:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1605 transitions. [2022-07-21 08:35:05,062 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.797317436661699 [2022-07-21 08:35:05,062 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1605 transitions. [2022-07-21 08:35:05,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1605 transitions. [2022-07-21 08:35:05,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:05,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1605 transitions. [2022-07-21 08:35:05,064 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) [2022-07-21 08:35:05,065 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) [2022-07-21 08:35:05,065 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) [2022-07-21 08:35:05,065 INFO L186 Difference]: Start difference. First operand has 299 places, 255 transitions, 2431 flow. Second operand 11 states and 1605 transitions. [2022-07-21 08:35:05,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 304 transitions, 3211 flow [2022-07-21 08:35:05,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 304 transitions, 3080 flow, removed 15 selfloop flow, removed 13 redundant places. [2022-07-21 08:35:05,101 INFO L242 Difference]: Finished difference. Result has 298 places, 229 transitions, 1957 flow [2022-07-21 08:35:05,101 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} [2022-07-21 08:35:05,102 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 138 predicate places. [2022-07-21 08:35:05,102 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 229 transitions, 1957 flow [2022-07-21 08:35:05,102 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) [2022-07-21 08:35:05,102 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:05,102 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] [2022-07-21 08:35:05,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:35:05,103 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)] === [2022-07-21 08:35:05,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:05,103 INFO L85 PathProgramCache]: Analyzing trace with hash -733823789, now seen corresponding path program 2 times [2022-07-21 08:35:05,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:05,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783628863] [2022-07-21 08:35:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:05,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:05,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:05,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:05,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783628863] [2022-07-21 08:35:05,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783628863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:05,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:05,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:35:05,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446621557] [2022-07-21 08:35:05,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:05,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:35:05,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:05,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:35:05,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:35:05,164 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-21 08:35:05,165 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) [2022-07-21 08:35:05,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:05,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-21 08:35:05,165 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:05,442 INFO L129 PetriNetUnfolder]: 319/1457 cut-off events. [2022-07-21 08:35:05,442 INFO L130 PetriNetUnfolder]: For 10135/10271 co-relation queries the response was YES. [2022-07-21 08:35:05,453 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. [2022-07-21 08:35:05,456 INFO L132 encePairwiseOnDemand]: 171/183 looper letters, 93 selfloop transitions, 42 changer transitions 37/291 dead transitions. [2022-07-21 08:35:05,456 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 291 transitions, 2936 flow [2022-07-21 08:35:05,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:35:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:35:05,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1754 transitions. [2022-07-21 08:35:05,458 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7987249544626593 [2022-07-21 08:35:05,458 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1754 transitions. [2022-07-21 08:35:05,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1754 transitions. [2022-07-21 08:35:05,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:05,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1754 transitions. [2022-07-21 08:35:05,460 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) [2022-07-21 08:35:05,461 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) [2022-07-21 08:35:05,461 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) [2022-07-21 08:35:05,462 INFO L186 Difference]: Start difference. First operand has 298 places, 229 transitions, 1957 flow. Second operand 12 states and 1754 transitions. [2022-07-21 08:35:05,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 291 transitions, 2936 flow [2022-07-21 08:35:05,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 291 transitions, 2463 flow, removed 35 selfloop flow, removed 36 redundant places. [2022-07-21 08:35:05,488 INFO L242 Difference]: Finished difference. Result has 277 places, 226 transitions, 1753 flow [2022-07-21 08:35:05,488 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} [2022-07-21 08:35:05,489 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 117 predicate places. [2022-07-21 08:35:05,489 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 226 transitions, 1753 flow [2022-07-21 08:35:05,489 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) [2022-07-21 08:35:05,489 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:05,489 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] [2022-07-21 08:35:05,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:35:05,489 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)] === [2022-07-21 08:35:05,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash 483175112, now seen corresponding path program 1 times [2022-07-21 08:35:05,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:05,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419874163] [2022-07-21 08:35:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:05,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:05,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:05,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:05,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:05,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419874163] [2022-07-21 08:35:05,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419874163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:05,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:05,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:35:05,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978589044] [2022-07-21 08:35:05,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:05,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:35:05,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:05,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:35:05,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:35:05,567 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-21 08:35:05,567 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) [2022-07-21 08:35:05,567 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:05,567 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-21 08:35:05,567 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:05,776 INFO L129 PetriNetUnfolder]: 235/1082 cut-off events. [2022-07-21 08:35:05,776 INFO L130 PetriNetUnfolder]: For 5529/5658 co-relation queries the response was YES. [2022-07-21 08:35:05,783 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. [2022-07-21 08:35:05,785 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 46 selfloop transitions, 19 changer transitions 83/254 dead transitions. [2022-07-21 08:35:05,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 254 transitions, 2280 flow [2022-07-21 08:35:05,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:35:05,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:35:05,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1447 transitions. [2022-07-21 08:35:05,786 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7907103825136612 [2022-07-21 08:35:05,786 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1447 transitions. [2022-07-21 08:35:05,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1447 transitions. [2022-07-21 08:35:05,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:05,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1447 transitions. [2022-07-21 08:35:05,788 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) [2022-07-21 08:35:05,789 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) [2022-07-21 08:35:05,789 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) [2022-07-21 08:35:05,789 INFO L186 Difference]: Start difference. First operand has 277 places, 226 transitions, 1753 flow. Second operand 10 states and 1447 transitions. [2022-07-21 08:35:05,789 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 254 transitions, 2280 flow [2022-07-21 08:35:05,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 254 transitions, 2162 flow, removed 19 selfloop flow, removed 12 redundant places. [2022-07-21 08:35:05,810 INFO L242 Difference]: Finished difference. Result has 270 places, 162 transitions, 932 flow [2022-07-21 08:35:05,810 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} [2022-07-21 08:35:05,811 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 110 predicate places. [2022-07-21 08:35:05,811 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 162 transitions, 932 flow [2022-07-21 08:35:05,811 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) [2022-07-21 08:35:05,811 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:05,811 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] [2022-07-21 08:35:05,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-21 08:35:05,811 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)] === [2022-07-21 08:35:05,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:05,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1868277023, now seen corresponding path program 3 times [2022-07-21 08:35:05,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:05,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487471195] [2022-07-21 08:35:05,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:05,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:05,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:05,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487471195] [2022-07-21 08:35:05,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487471195] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:05,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:05,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:35:05,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228749917] [2022-07-21 08:35:05,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:05,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:35:05,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:05,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:35:05,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:35:05,875 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-21 08:35:05,875 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) [2022-07-21 08:35:05,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:05,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-21 08:35:05,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:06,082 INFO L129 PetriNetUnfolder]: 151/724 cut-off events. [2022-07-21 08:35:06,083 INFO L130 PetriNetUnfolder]: For 3114/3143 co-relation queries the response was YES. [2022-07-21 08:35:06,087 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. [2022-07-21 08:35:06,089 INFO L132 encePairwiseOnDemand]: 172/183 looper letters, 44 selfloop transitions, 24 changer transitions 30/204 dead transitions. [2022-07-21 08:35:06,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 204 transitions, 1483 flow [2022-07-21 08:35:06,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:35:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:35:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2008 transitions. [2022-07-21 08:35:06,090 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7837626854020296 [2022-07-21 08:35:06,091 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2008 transitions. [2022-07-21 08:35:06,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2008 transitions. [2022-07-21 08:35:06,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:06,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2008 transitions. [2022-07-21 08:35:06,093 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) [2022-07-21 08:35:06,095 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) [2022-07-21 08:35:06,095 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) [2022-07-21 08:35:06,095 INFO L186 Difference]: Start difference. First operand has 270 places, 162 transitions, 932 flow. Second operand 14 states and 2008 transitions. [2022-07-21 08:35:06,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 204 transitions, 1483 flow [2022-07-21 08:35:06,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 204 transitions, 1102 flow, removed 21 selfloop flow, removed 59 redundant places. [2022-07-21 08:35:06,103 INFO L242 Difference]: Finished difference. Result has 203 places, 162 transitions, 739 flow [2022-07-21 08:35:06,104 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} [2022-07-21 08:35:06,105 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 43 predicate places. [2022-07-21 08:35:06,105 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 162 transitions, 739 flow [2022-07-21 08:35:06,105 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) [2022-07-21 08:35:06,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:06,106 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] [2022-07-21 08:35:06,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 08:35:06,106 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)] === [2022-07-21 08:35:06,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:06,106 INFO L85 PathProgramCache]: Analyzing trace with hash 90273215, now seen corresponding path program 4 times [2022-07-21 08:35:06,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:06,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570162767] [2022-07-21 08:35:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:06,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:06,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:06,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570162767] [2022-07-21 08:35:06,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570162767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:06,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:06,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 08:35:06,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825793061] [2022-07-21 08:35:06,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:06,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 08:35:06,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:06,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 08:35:06,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 08:35:06,151 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 183 [2022-07-21 08:35:06,152 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) [2022-07-21 08:35:06,152 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:06,152 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 183 [2022-07-21 08:35:06,152 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:06,224 INFO L129 PetriNetUnfolder]: 101/583 cut-off events. [2022-07-21 08:35:06,224 INFO L130 PetriNetUnfolder]: For 1984/2008 co-relation queries the response was YES. [2022-07-21 08:35:06,227 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. [2022-07-21 08:35:06,228 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 35 selfloop transitions, 8 changer transitions 2/168 dead transitions. [2022-07-21 08:35:06,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 168 transitions, 876 flow [2022-07-21 08:35:06,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 08:35:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-21 08:35:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 628 transitions. [2022-07-21 08:35:06,229 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8579234972677595 [2022-07-21 08:35:06,229 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 628 transitions. [2022-07-21 08:35:06,229 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 628 transitions. [2022-07-21 08:35:06,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:06,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 628 transitions. [2022-07-21 08:35:06,230 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) [2022-07-21 08:35:06,233 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) [2022-07-21 08:35:06,233 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) [2022-07-21 08:35:06,233 INFO L186 Difference]: Start difference. First operand has 203 places, 162 transitions, 739 flow. Second operand 4 states and 628 transitions. [2022-07-21 08:35:06,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 168 transitions, 876 flow [2022-07-21 08:35:06,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 168 transitions, 762 flow, removed 21 selfloop flow, removed 14 redundant places. [2022-07-21 08:35:06,239 INFO L242 Difference]: Finished difference. Result has 190 places, 162 transitions, 668 flow [2022-07-21 08:35:06,239 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} [2022-07-21 08:35:06,240 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 30 predicate places. [2022-07-21 08:35:06,240 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 162 transitions, 668 flow [2022-07-21 08:35:06,240 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) [2022-07-21 08:35:06,240 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:35:06,240 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] [2022-07-21 08:35:06,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 08:35:06,241 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)] === [2022-07-21 08:35:06,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:35:06,241 INFO L85 PathProgramCache]: Analyzing trace with hash -2045095045, now seen corresponding path program 1 times [2022-07-21 08:35:06,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:35:06,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699111188] [2022-07-21 08:35:06,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:35:06,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:35:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:35:06,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:35:06,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:35:06,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699111188] [2022-07-21 08:35:06,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699111188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:35:06,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:35:06,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:35:06,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650965607] [2022-07-21 08:35:06,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:35:06,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:35:06,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:35:06,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:35:06,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:35:06,316 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-21 08:35:06,316 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) [2022-07-21 08:35:06,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:35:06,317 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-21 08:35:06,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:35:06,423 INFO L129 PetriNetUnfolder]: 111/563 cut-off events. [2022-07-21 08:35:06,423 INFO L130 PetriNetUnfolder]: For 1852/1879 co-relation queries the response was YES. [2022-07-21 08:35:06,425 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. [2022-07-21 08:35:06,426 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 0 selfloop transitions, 0 changer transitions 178/178 dead transitions. [2022-07-21 08:35:06,426 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 178 transitions, 937 flow [2022-07-21 08:35:06,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:35:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:35:06,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1287 transitions. [2022-07-21 08:35:06,428 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7814207650273224 [2022-07-21 08:35:06,428 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1287 transitions. [2022-07-21 08:35:06,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1287 transitions. [2022-07-21 08:35:06,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:35:06,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1287 transitions. [2022-07-21 08:35:06,429 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) [2022-07-21 08:35:06,430 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) [2022-07-21 08:35:06,430 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) [2022-07-21 08:35:06,430 INFO L186 Difference]: Start difference. First operand has 190 places, 162 transitions, 668 flow. Second operand 9 states and 1287 transitions. [2022-07-21 08:35:06,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 178 transitions, 937 flow [2022-07-21 08:35:06,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 178 transitions, 914 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-21 08:35:06,435 INFO L242 Difference]: Finished difference. Result has 194 places, 0 transitions, 0 flow [2022-07-21 08:35:06,435 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} [2022-07-21 08:35:06,435 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 34 predicate places. [2022-07-21 08:35:06,435 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 0 transitions, 0 flow [2022-07-21 08:35:06,435 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) [2022-07-21 08:35:06,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-07-21 08:35:06,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-21 08:35:06,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-07-21 08:35:06,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-07-21 08:35:06,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-07-21 08:35:06,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-21 08:35:06,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-21 08:35:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-21 08:35:06,438 INFO L356 BasicCegarLoop]: Path program histogram: [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:35:06,441 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-21 08:35:06,441 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 08:35:06,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:35:06 BasicIcfg [2022-07-21 08:35:06,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 08:35:06,445 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 08:35:06,445 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 08:35:06,445 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 08:35:06,445 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:34:44" (3/4) ... [2022-07-21 08:35:06,446 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 08:35:06,450 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader1 [2022-07-21 08:35:06,450 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader2 [2022-07-21 08:35:06,450 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_updater [2022-07-21 08:35:06,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-07-21 08:35:06,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-21 08:35:06,452 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 08:35:06,453 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 08:35:06,471 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 08:35:06,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 08:35:06,471 INFO L158 Benchmark]: Toolchain (without parser) took 23241.94ms. Allocated memory was 46.1MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 29.9MB in the beginning and 507.8MB in the end (delta: -477.9MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-07-21 08:35:06,472 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory was 28.1MB in the beginning and 28.1MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 08:35:06,472 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.41ms. Allocated memory was 46.1MB in the beginning and 58.7MB in the end (delta: 12.6MB). Free memory was 29.7MB in the beginning and 31.6MB in the end (delta: -1.9MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. [2022-07-21 08:35:06,472 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.15ms. Allocated memory is still 58.7MB. Free memory was 31.4MB in the beginning and 42.0MB in the end (delta: -10.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2022-07-21 08:35:06,472 INFO L158 Benchmark]: Boogie Preprocessor took 21.57ms. Allocated memory is still 58.7MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:35:06,472 INFO L158 Benchmark]: RCFGBuilder took 600.97ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 34.8MB in the end (delta: 5.1MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2022-07-21 08:35:06,472 INFO L158 Benchmark]: TraceAbstraction took 22084.30ms. Allocated memory was 58.7MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 34.3MB in the beginning and 511.0MB in the end (delta: -476.7MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-07-21 08:35:06,473 INFO L158 Benchmark]: Witness Printer took 26.44ms. Allocated memory is still 1.7GB. Free memory was 511.0MB in the beginning and 507.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 08:35:06,474 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 46.1MB. Free memory was 28.1MB in the beginning and 28.1MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.41ms. Allocated memory was 46.1MB in the beginning and 58.7MB in the end (delta: 12.6MB). Free memory was 29.7MB in the beginning and 31.6MB in the end (delta: -1.9MB). Peak memory consumption was 9.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.15ms. Allocated memory is still 58.7MB. Free memory was 31.4MB in the beginning and 42.0MB in the end (delta: -10.6MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.57ms. Allocated memory is still 58.7MB. Free memory was 42.0MB in the beginning and 39.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 600.97ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 34.8MB in the end (delta: 5.1MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. * TraceAbstraction took 22084.30ms. Allocated memory was 58.7MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 34.3MB in the beginning and 511.0MB in the end (delta: -476.7MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 26.44ms. Allocated memory is still 1.7GB. Free memory was 511.0MB in the beginning and 507.8MB 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: 22.0s, OverallIterations: 32, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 18.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2508 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2508 mSDsluCounter, 1595 SdHoareTripleChecker+Invalid, 3.1s 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! [2022-07-21 08:35:06,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE