/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/qrcu-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:28:27,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:28:27,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:28:27,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:28:27,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:28:27,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:28:27,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:28:27,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:28:27,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:28:27,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:28:27,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:28:27,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:28:27,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:28:27,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:28:27,364 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:28:27,365 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:28:27,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:28:27,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:28:27,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:28:27,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:28:27,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:28:27,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:28:27,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:28:27,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:28:27,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:28:27,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:28:27,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:28:27,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:28:27,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:28:27,379 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:28:27,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:28:27,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:28:27,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:28:27,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:28:27,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:28:27,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:28:27,381 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:28:27,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:28:27,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:28:27,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:28:27,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:28:27,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 20:28:27,409 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:28:27,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:28:27,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:28:27,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:28:27,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:28:27,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:28:27,411 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:28:27,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:28:27,411 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:28:27,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:28:27,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:28:27,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:28:27,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:28:27,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:28:27,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:28:27,414 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:28:27,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:28:27,414 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:28:27,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:28:27,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:28:27,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:28:27,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:28:27,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:28:27,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:28:27,415 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:28:27,415 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:28:27,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:28:27,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:28:27,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:28:27,416 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:28:27,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:28:27,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:28:27,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:28:27,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:28:27,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:28:27,634 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:28:27,634 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:28:27,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/qrcu-1.i [2022-09-20 20:28:27,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d185be671/df150ad7fa274449bd96aa099800705d/FLAGc5b441b1d [2022-09-20 20:28:28,069 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:28:28,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i [2022-09-20 20:28:28,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d185be671/df150ad7fa274449bd96aa099800705d/FLAGc5b441b1d [2022-09-20 20:28:28,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d185be671/df150ad7fa274449bd96aa099800705d [2022-09-20 20:28:28,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:28:28,402 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:28:28,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:28:28,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:28:28,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:28:28,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5be2792a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28, skipping insertion in model container [2022-09-20 20:28:28,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:28:28,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:28:28,707 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30694,30707] [2022-09-20 20:28:28,711 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30916,30929] [2022-09-20 20:28:28,727 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:28:28,734 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:28:28,763 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30694,30707] [2022-09-20 20:28:28,764 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30916,30929] [2022-09-20 20:28:28,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:28:28,808 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:28:28,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28 WrapperNode [2022-09-20 20:28:28,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:28:28,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:28:28,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:28:28,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:28:28,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,867 INFO L138 Inliner]: procedures = 177, calls = 54, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 270 [2022-09-20 20:28:28,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:28:28,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:28:28,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:28:28,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:28:28,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:28:28,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:28:28,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:28:28,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:28:28,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (1/1) ... [2022-09-20 20:28:28,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:28:28,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:28:28,952 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) [2022-09-20 20:28:28,975 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 [2022-09-20 20:28:28,979 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-09-20 20:28:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-09-20 20:28:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-09-20 20:28:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-09-20 20:28:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:28:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:28:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-09-20 20:28:28,980 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-09-20 20:28:28,980 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-20 20:28:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:28:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:28:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:28:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:28:28,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:28:28,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:28:28,982 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:28:29,117 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:28:29,119 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:28:29,565 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:28:29,698 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:28:29,699 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-20 20:28:29,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:28:29 BoogieIcfgContainer [2022-09-20 20:28:29,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:28:29,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:28:29,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:28:29,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:28:29,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:28:28" (1/3) ... [2022-09-20 20:28:29,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c715c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:28:29, skipping insertion in model container [2022-09-20 20:28:29,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:28:28" (2/3) ... [2022-09-20 20:28:29,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c715c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:28:29, skipping insertion in model container [2022-09-20 20:28:29,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:28:29" (3/3) ... [2022-09-20 20:28:29,706 INFO L112 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2022-09-20 20:28:29,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:28:29,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-20 20:28:29,718 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:28:29,811 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 20:28:29,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 183 transitions, 390 flow [2022-09-20 20:28:29,898 INFO L130 PetriNetUnfolder]: 18/180 cut-off events. [2022-09-20 20:28:29,898 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 20:28:29,903 INFO L83 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 355 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. [2022-09-20 20:28:29,903 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 183 transitions, 390 flow [2022-09-20 20:28:29,906 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 168 transitions, 351 flow [2022-09-20 20:28:29,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:28:29,917 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@73c920d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:28:29,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-20 20:28:29,936 INFO L130 PetriNetUnfolder]: 9/122 cut-off events. [2022-09-20 20:28:29,936 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 20:28:29,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:29,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:29,940 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)] === [2022-09-20 20:28:29,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:29,944 INFO L85 PathProgramCache]: Analyzing trace with hash -707274187, now seen corresponding path program 1 times [2022-09-20 20:28:29,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:29,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540411170] [2022-09-20 20:28:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:29,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:30,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:30,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540411170] [2022-09-20 20:28:30,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540411170] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:30,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:30,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:28:30,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259855767] [2022-09-20 20:28:30,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:30,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:28:30,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:30,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:28:30,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:28:30,222 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 183 [2022-09-20 20:28:30,226 INFO L100 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) [2022-09-20 20:28:30,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:30,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 183 [2022-09-20 20:28:30,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:30,527 INFO L130 PetriNetUnfolder]: 629/1791 cut-off events. [2022-09-20 20:28:30,527 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2022-09-20 20:28:30,535 INFO L83 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 12377 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. [2022-09-20 20:28:30,542 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 40 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2022-09-20 20:28:30,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 175 transitions, 455 flow [2022-09-20 20:28:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:28:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:28:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2022-09-20 20:28:30,556 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8998178506375227 [2022-09-20 20:28:30,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2022-09-20 20:28:30,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2022-09-20 20:28:30,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:30,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2022-09-20 20:28:30,565 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) [2022-09-20 20:28:30,569 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) [2022-09-20 20:28:30,569 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) [2022-09-20 20:28:30,570 INFO L175 Difference]: Start difference. First operand has 160 places, 168 transitions, 351 flow. Second operand 3 states and 494 transitions. [2022-09-20 20:28:30,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 175 transitions, 455 flow [2022-09-20 20:28:30,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 175 transitions, 442 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 20:28:30,580 INFO L231 Difference]: Finished difference. Result has 159 places, 163 transitions, 344 flow [2022-09-20 20:28:30,581 INFO L270 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} [2022-09-20 20:28:30,584 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, -1 predicate places. [2022-09-20 20:28:30,584 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 163 transitions, 344 flow [2022-09-20 20:28:30,584 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) [2022-09-20 20:28:30,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:30,585 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:30,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:28:30,585 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)] === [2022-09-20 20:28:30,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:30,586 INFO L85 PathProgramCache]: Analyzing trace with hash -234050775, now seen corresponding path program 1 times [2022-09-20 20:28:30,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:30,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671864843] [2022-09-20 20:28:30,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:30,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:30,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:30,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671864843] [2022-09-20 20:28:30,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671864843] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:30,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:30,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 20:28:30,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389819139] [2022-09-20 20:28:30,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:30,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:28:30,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:30,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:28:30,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:28:30,736 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-09-20 20:28:30,736 INFO L100 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) [2022-09-20 20:28:30,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:30,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-09-20 20:28:30,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:30,886 INFO L130 PetriNetUnfolder]: 402/1255 cut-off events. [2022-09-20 20:28:30,886 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-09-20 20:28:30,890 INFO L83 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 8065 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. [2022-09-20 20:28:30,894 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 26 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2022-09-20 20:28:30,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 172 transitions, 421 flow [2022-09-20 20:28:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:28:30,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:28:30,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-09-20 20:28:30,896 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-09-20 20:28:30,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-09-20 20:28:30,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-09-20 20:28:30,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:30,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-09-20 20:28:30,897 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) [2022-09-20 20:28:30,898 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) [2022-09-20 20:28:30,899 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) [2022-09-20 20:28:30,899 INFO L175 Difference]: Start difference. First operand has 159 places, 163 transitions, 344 flow. Second operand 3 states and 500 transitions. [2022-09-20 20:28:30,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 172 transitions, 421 flow [2022-09-20 20:28:30,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 172 transitions, 419 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 20:28:30,904 INFO L231 Difference]: Finished difference. Result has 161 places, 163 transitions, 350 flow [2022-09-20 20:28:30,904 INFO L270 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} [2022-09-20 20:28:30,905 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2022-09-20 20:28:30,905 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 163 transitions, 350 flow [2022-09-20 20:28:30,906 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) [2022-09-20 20:28:30,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:30,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:30,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:28:30,906 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)] === [2022-09-20 20:28:30,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:30,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1675792571, now seen corresponding path program 1 times [2022-09-20 20:28:30,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:30,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59746545] [2022-09-20 20:28:30,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:30,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:31,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:31,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59746545] [2022-09-20 20:28:31,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59746545] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:31,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:31,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 20:28:31,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142685298] [2022-09-20 20:28:31,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:31,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:28:31,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:31,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:28:31,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:28:31,019 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-09-20 20:28:31,020 INFO L100 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) [2022-09-20 20:28:31,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:31,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-09-20 20:28:31,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:31,691 INFO L130 PetriNetUnfolder]: 2951/6671 cut-off events. [2022-09-20 20:28:31,692 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2022-09-20 20:28:31,708 INFO L83 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 56577 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. [2022-09-20 20:28:31,727 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 84 selfloop transitions, 11 changer transitions 7/227 dead transitions. [2022-09-20 20:28:31,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 227 transitions, 695 flow [2022-09-20 20:28:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:28:31,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:28:31,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1070 transitions. [2022-09-20 20:28:31,729 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8352849336455894 [2022-09-20 20:28:31,729 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1070 transitions. [2022-09-20 20:28:31,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1070 transitions. [2022-09-20 20:28:31,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:31,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1070 transitions. [2022-09-20 20:28:31,731 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) [2022-09-20 20:28:31,733 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) [2022-09-20 20:28:31,734 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) [2022-09-20 20:28:31,734 INFO L175 Difference]: Start difference. First operand has 161 places, 163 transitions, 350 flow. Second operand 7 states and 1070 transitions. [2022-09-20 20:28:31,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 227 transitions, 695 flow [2022-09-20 20:28:31,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 227 transitions, 691 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:28:31,742 INFO L231 Difference]: Finished difference. Result has 168 places, 172 transitions, 408 flow [2022-09-20 20:28:31,742 INFO L270 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} [2022-09-20 20:28:31,743 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 8 predicate places. [2022-09-20 20:28:31,743 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 172 transitions, 408 flow [2022-09-20 20:28:31,743 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) [2022-09-20 20:28:31,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:31,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:31,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:28:31,744 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)] === [2022-09-20 20:28:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash 972022589, now seen corresponding path program 1 times [2022-09-20 20:28:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:31,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980468810] [2022-09-20 20:28:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:31,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:31,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:31,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:31,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980468810] [2022-09-20 20:28:31,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980468810] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:31,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:31,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:28:31,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534218485] [2022-09-20 20:28:31,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:31,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:28:31,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:31,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:28:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:28:31,823 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 183 [2022-09-20 20:28:31,824 INFO L100 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) [2022-09-20 20:28:31,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:31,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 183 [2022-09-20 20:28:31,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:32,190 INFO L130 PetriNetUnfolder]: 1220/3041 cut-off events. [2022-09-20 20:28:32,191 INFO L131 PetriNetUnfolder]: For 393/404 co-relation queries the response was YES. [2022-09-20 20:28:32,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5377 conditions, 3041 events. 1220/3041 cut-off events. For 393/404 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 24283 event pairs, 229 based on Foata normal form. 128/3035 useless extension candidates. Maximal degree in co-relation 5219. Up to 1544 conditions per place. [2022-09-20 20:28:32,208 INFO L137 encePairwiseOnDemand]: 165/183 looper letters, 95 selfloop transitions, 31 changer transitions 0/253 dead transitions. [2022-09-20 20:28:32,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 253 transitions, 868 flow [2022-09-20 20:28:32,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 20:28:32,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 20:28:32,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1198 transitions. [2022-09-20 20:28:32,210 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8183060109289617 [2022-09-20 20:28:32,210 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1198 transitions. [2022-09-20 20:28:32,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1198 transitions. [2022-09-20 20:28:32,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:32,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1198 transitions. [2022-09-20 20:28:32,213 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) [2022-09-20 20:28:32,215 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) [2022-09-20 20:28:32,215 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) [2022-09-20 20:28:32,215 INFO L175 Difference]: Start difference. First operand has 168 places, 172 transitions, 408 flow. Second operand 8 states and 1198 transitions. [2022-09-20 20:28:32,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 253 transitions, 868 flow [2022-09-20 20:28:32,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 253 transitions, 868 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 20:28:32,220 INFO L231 Difference]: Finished difference. Result has 181 places, 205 transitions, 655 flow [2022-09-20 20:28:32,221 INFO L270 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} [2022-09-20 20:28:32,221 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 21 predicate places. [2022-09-20 20:28:32,221 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 205 transitions, 655 flow [2022-09-20 20:28:32,222 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) [2022-09-20 20:28:32,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:32,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:32,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:28:32,222 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)] === [2022-09-20 20:28:32,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:32,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1305771671, now seen corresponding path program 1 times [2022-09-20 20:28:32,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:32,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639779862] [2022-09-20 20:28:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:32,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:32,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:32,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639779862] [2022-09-20 20:28:32,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639779862] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:32,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:32,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:28:32,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242421684] [2022-09-20 20:28:32,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:32,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:28:32,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:32,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:28:32,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:28:32,293 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 183 [2022-09-20 20:28:32,294 INFO L100 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) [2022-09-20 20:28:32,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:32,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 183 [2022-09-20 20:28:32,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:33,307 INFO L381 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: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), Black: 186#(= ~readerprogress1~0 0), 204#true, 92#L777true]) [2022-09-20 20:28:33,308 INFO L383 tUnfolder$Statistics]: this new event has 94 ancestors and is cut-off event [2022-09-20 20:28:33,308 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-09-20 20:28:33,308 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-09-20 20:28:33,308 INFO L386 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-09-20 20:28:33,363 INFO L381 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: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), Black: 186#(= ~readerprogress1~0 0), 204#true, 92#L777true]) [2022-09-20 20:28:33,363 INFO L383 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-09-20 20:28:33,364 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-09-20 20:28:33,364 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-09-20 20:28:33,364 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-09-20 20:28:33,490 INFO L381 tUnfolder$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: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), Black: 186#(= ~readerprogress1~0 0), 204#true, 92#L777true]) [2022-09-20 20:28:33,490 INFO L383 tUnfolder$Statistics]: this new event has 99 ancestors and is cut-off event [2022-09-20 20:28:33,490 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-09-20 20:28:33,490 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-09-20 20:28:33,490 INFO L386 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-09-20 20:28:33,523 INFO L381 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: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), Black: 186#(= ~readerprogress1~0 0), 204#true, 92#L777true]) [2022-09-20 20:28:33,523 INFO L383 tUnfolder$Statistics]: this new event has 101 ancestors and is cut-off event [2022-09-20 20:28:33,523 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-09-20 20:28:33,523 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-09-20 20:28:33,524 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-09-20 20:28:33,582 INFO L130 PetriNetUnfolder]: 5691/12091 cut-off events. [2022-09-20 20:28:33,582 INFO L131 PetriNetUnfolder]: For 11654/11838 co-relation queries the response was YES. [2022-09-20 20:28:33,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28727 conditions, 12091 events. 5691/12091 cut-off events. For 11654/11838 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 112679 event pairs, 1155 based on Foata normal form. 144/11570 useless extension candidates. Maximal degree in co-relation 28135. Up to 3377 conditions per place. [2022-09-20 20:28:33,645 INFO L137 encePairwiseOnDemand]: 173/183 looper letters, 175 selfloop transitions, 18 changer transitions 10/335 dead transitions. [2022-09-20 20:28:33,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 335 transitions, 1649 flow [2022-09-20 20:28:33,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:28:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:28:33,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1381 transitions. [2022-09-20 20:28:33,647 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7546448087431694 [2022-09-20 20:28:33,648 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1381 transitions. [2022-09-20 20:28:33,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1381 transitions. [2022-09-20 20:28:33,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:33,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1381 transitions. [2022-09-20 20:28:33,650 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) [2022-09-20 20:28:33,652 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) [2022-09-20 20:28:33,652 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) [2022-09-20 20:28:33,652 INFO L175 Difference]: Start difference. First operand has 181 places, 205 transitions, 655 flow. Second operand 10 states and 1381 transitions. [2022-09-20 20:28:33,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 335 transitions, 1649 flow [2022-09-20 20:28:33,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 335 transitions, 1649 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 20:28:33,689 INFO L231 Difference]: Finished difference. Result has 195 places, 221 transitions, 771 flow [2022-09-20 20:28:33,689 INFO L270 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} [2022-09-20 20:28:33,690 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 35 predicate places. [2022-09-20 20:28:33,690 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 221 transitions, 771 flow [2022-09-20 20:28:33,690 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) [2022-09-20 20:28:33,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:33,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:33,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:28:33,691 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)] === [2022-09-20 20:28:33,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash -593304133, now seen corresponding path program 1 times [2022-09-20 20:28:33,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:33,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807607630] [2022-09-20 20:28:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:33,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:33,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:33,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:33,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807607630] [2022-09-20 20:28:33,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807607630] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:33,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:33,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:28:33,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816450439] [2022-09-20 20:28:33,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:33,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:28:33,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:33,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:28:33,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:28:33,789 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 183 [2022-09-20 20:28:33,790 INFO L100 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) [2022-09-20 20:28:33,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:33,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 183 [2022-09-20 20:28:33,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:34,442 INFO L130 PetriNetUnfolder]: 2049/5079 cut-off events. [2022-09-20 20:28:34,443 INFO L131 PetriNetUnfolder]: For 5416/5480 co-relation queries the response was YES. [2022-09-20 20:28:34,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 5079 events. 2049/5079 cut-off events. For 5416/5480 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 45389 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. [2022-09-20 20:28:34,468 INFO L137 encePairwiseOnDemand]: 162/183 looper letters, 120 selfloop transitions, 37 changer transitions 0/298 dead transitions. [2022-09-20 20:28:34,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 298 transitions, 1417 flow [2022-09-20 20:28:34,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:28:34,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:28:34,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1468 transitions. [2022-09-20 20:28:34,470 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8021857923497268 [2022-09-20 20:28:34,471 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1468 transitions. [2022-09-20 20:28:34,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1468 transitions. [2022-09-20 20:28:34,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:34,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1468 transitions. [2022-09-20 20:28:34,473 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) [2022-09-20 20:28:34,475 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) [2022-09-20 20:28:34,475 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) [2022-09-20 20:28:34,476 INFO L175 Difference]: Start difference. First operand has 195 places, 221 transitions, 771 flow. Second operand 10 states and 1468 transitions. [2022-09-20 20:28:34,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 298 transitions, 1417 flow [2022-09-20 20:28:34,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 298 transitions, 1417 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 20:28:34,489 INFO L231 Difference]: Finished difference. Result has 209 places, 237 transitions, 1010 flow [2022-09-20 20:28:34,489 INFO L270 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} [2022-09-20 20:28:34,489 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 49 predicate places. [2022-09-20 20:28:34,490 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 237 transitions, 1010 flow [2022-09-20 20:28:34,490 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) [2022-09-20 20:28:34,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:34,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:34,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:28:34,490 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)] === [2022-09-20 20:28:34,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:34,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1229532137, now seen corresponding path program 1 times [2022-09-20 20:28:34,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:34,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129473059] [2022-09-20 20:28:34,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:34,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:34,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:34,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129473059] [2022-09-20 20:28:34,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129473059] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:34,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:34,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 20:28:34,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751492068] [2022-09-20 20:28:34,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:34,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:28:34,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:34,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:28:34,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:28:34,557 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-09-20 20:28:34,558 INFO L100 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) [2022-09-20 20:28:34,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:34,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-09-20 20:28:34,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:34,870 INFO L381 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)), 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)]) [2022-09-20 20:28:34,870 INFO L383 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-09-20 20:28:34,870 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,870 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,870 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,871 INFO L381 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)), 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)]) [2022-09-20 20:28:34,871 INFO L383 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-09-20 20:28:34,871 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,871 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,871 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,955 INFO L381 tUnfolder$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)), 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)), 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)]) [2022-09-20 20:28:34,956 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-09-20 20:28:34,956 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,956 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,956 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-09-20 20:28:34,956 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,956 INFO L381 tUnfolder$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)), 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)]) [2022-09-20 20:28:34,956 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-09-20 20:28:34,956 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,957 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:34,957 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-09-20 20:28:34,957 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:35,021 INFO L130 PetriNetUnfolder]: 1439/4562 cut-off events. [2022-09-20 20:28:35,022 INFO L131 PetriNetUnfolder]: For 5492/5750 co-relation queries the response was YES. [2022-09-20 20:28:35,043 INFO L83 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 43045 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. [2022-09-20 20:28:35,056 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 73 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2022-09-20 20:28:35,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 258 transitions, 1286 flow [2022-09-20 20:28:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:28:35,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:28:35,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-09-20 20:28:35,058 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-09-20 20:28:35,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-09-20 20:28:35,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-09-20 20:28:35,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:35,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-09-20 20:28:35,059 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) [2022-09-20 20:28:35,060 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) [2022-09-20 20:28:35,060 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) [2022-09-20 20:28:35,060 INFO L175 Difference]: Start difference. First operand has 209 places, 237 transitions, 1010 flow. Second operand 3 states and 500 transitions. [2022-09-20 20:28:35,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 258 transitions, 1286 flow [2022-09-20 20:28:35,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 258 transitions, 1263 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:28:35,077 INFO L231 Difference]: Finished difference. Result has 208 places, 237 transitions, 994 flow [2022-09-20 20:28:35,077 INFO L270 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} [2022-09-20 20:28:35,078 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 48 predicate places. [2022-09-20 20:28:35,078 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 237 transitions, 994 flow [2022-09-20 20:28:35,078 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) [2022-09-20 20:28:35,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:35,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:35,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:28:35,079 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)] === [2022-09-20 20:28:35,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:35,079 INFO L85 PathProgramCache]: Analyzing trace with hash 545156572, now seen corresponding path program 1 times [2022-09-20 20:28:35,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:35,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453786536] [2022-09-20 20:28:35,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:35,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:35,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:35,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:35,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453786536] [2022-09-20 20:28:35,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453786536] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:35,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:35,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 20:28:35,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915820548] [2022-09-20 20:28:35,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:35,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:28:35,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:28:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:28:35,114 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-09-20 20:28:35,114 INFO L100 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) [2022-09-20 20:28:35,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:35,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-09-20 20:28:35,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:35,518 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([839] L777-->L777-3: Formula: (and (= |v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1#1_3| |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_5|) (= |v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1_4| |v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1_3|) (= |v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1#1_3| |v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1#1_3|) (= |v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1_4| |v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1_3|)) InVars {qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1_3|, qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1_3|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_5|} OutVars{qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1_4|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_5|, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1#1=|v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1#1_3|, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet7#1=|v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet7#1_3|, qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1_4|, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1#1=|v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1#1_3|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1#1, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet7#1, qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1#1][176], [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, 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)), 128#L777-3true, 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, 270#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, 28#L757true, Black: 186#(= ~readerprogress1~0 0)]) [2022-09-20 20:28:35,518 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-09-20 20:28:35,518 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-09-20 20:28:35,518 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-09-20 20:28:35,519 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-20 20:28:35,525 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([839] L777-->L777-3: Formula: (and (= |v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1#1_3| |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_5|) (= |v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1_4| |v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1_3|) (= |v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1#1_3| |v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1#1_3|) (= |v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1_4| |v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1_3|)) InVars {qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1_3|, qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1_3|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_5|} OutVars{qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1_4|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_5|, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1#1=|v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1#1_3|, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet7#1=|v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet7#1_3|, qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1_4|, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1#1=|v_qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1#1_3|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond#1, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1#1, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet7#1, qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond#1, qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1#1][176], [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, 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)), 128#L777-3true, 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, 270#true, 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)), qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), 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, 28#L757true, Black: 186#(= ~readerprogress1~0 0)]) [2022-09-20 20:28:35,525 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-09-20 20:28:35,525 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-09-20 20:28:35,525 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-09-20 20:28:35,525 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-20 20:28:35,542 INFO L381 tUnfolder$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][223], [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)), 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)]) [2022-09-20 20:28:35,542 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-09-20 20:28:35,543 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:35,543 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:35,543 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:35,543 INFO L381 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][224], [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)), 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)), 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)]) [2022-09-20 20:28:35,546 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-09-20 20:28:35,546 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:35,546 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:35,546 INFO L386 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-09-20 20:28:35,665 INFO L130 PetriNetUnfolder]: 1538/4906 cut-off events. [2022-09-20 20:28:35,666 INFO L131 PetriNetUnfolder]: For 5480/5752 co-relation queries the response was YES. [2022-09-20 20:28:35,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11474 conditions, 4906 events. 1538/4906 cut-off events. For 5480/5752 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 47336 event pairs, 200 based on Foata normal form. 111/4634 useless extension candidates. Maximal degree in co-relation 11119. Up to 1139 conditions per place. [2022-09-20 20:28:35,694 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 70 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2022-09-20 20:28:35,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 258 transitions, 1265 flow [2022-09-20 20:28:35,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:28:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:28:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-09-20 20:28:35,696 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-09-20 20:28:35,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-09-20 20:28:35,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-09-20 20:28:35,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:35,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-09-20 20:28:35,701 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) [2022-09-20 20:28:35,703 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) [2022-09-20 20:28:35,703 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) [2022-09-20 20:28:35,703 INFO L175 Difference]: Start difference. First operand has 208 places, 237 transitions, 994 flow. Second operand 3 states and 500 transitions. [2022-09-20 20:28:35,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 258 transitions, 1265 flow [2022-09-20 20:28:35,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 258 transitions, 1264 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 20:28:35,717 INFO L231 Difference]: Finished difference. Result has 210 places, 237 transitions, 998 flow [2022-09-20 20:28:35,718 INFO L270 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} [2022-09-20 20:28:35,720 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 50 predicate places. [2022-09-20 20:28:35,720 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 237 transitions, 998 flow [2022-09-20 20:28:35,720 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) [2022-09-20 20:28:35,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:35,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:35,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:28:35,721 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)] === [2022-09-20 20:28:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash -637520708, now seen corresponding path program 1 times [2022-09-20 20:28:35,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:35,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480680066] [2022-09-20 20:28:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:35,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:35,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:35,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:35,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480680066] [2022-09-20 20:28:35,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480680066] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:35,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:35,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:28:35,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510374101] [2022-09-20 20:28:35,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:35,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:28:35,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:35,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:28:35,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:28:35,768 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 183 [2022-09-20 20:28:35,768 INFO L100 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) [2022-09-20 20:28:35,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:35,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 183 [2022-09-20 20:28:35,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:36,200 INFO L130 PetriNetUnfolder]: 1766/5380 cut-off events. [2022-09-20 20:28:36,201 INFO L131 PetriNetUnfolder]: For 6303/6533 co-relation queries the response was YES. [2022-09-20 20:28:36,230 INFO L83 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 230. Compared 50211 event pairs, 317 based on Foata normal form. 40/4971 useless extension candidates. Maximal degree in co-relation 11793. Up to 1261 conditions per place. [2022-09-20 20:28:36,237 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 49 selfloop transitions, 2 changer transitions 43/237 dead transitions. [2022-09-20 20:28:36,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 237 transitions, 1140 flow [2022-09-20 20:28:36,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:28:36,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:28:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-09-20 20:28:36,239 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8943533697632058 [2022-09-20 20:28:36,239 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-09-20 20:28:36,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-09-20 20:28:36,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:36,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-09-20 20:28:36,240 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) [2022-09-20 20:28:36,241 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) [2022-09-20 20:28:36,241 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) [2022-09-20 20:28:36,242 INFO L175 Difference]: Start difference. First operand has 210 places, 237 transitions, 998 flow. Second operand 3 states and 491 transitions. [2022-09-20 20:28:36,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 237 transitions, 1140 flow [2022-09-20 20:28:36,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 237 transitions, 1131 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-09-20 20:28:36,257 INFO L231 Difference]: Finished difference. Result has 202 places, 181 transitions, 675 flow [2022-09-20 20:28:36,257 INFO L270 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} [2022-09-20 20:28:36,258 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 42 predicate places. [2022-09-20 20:28:36,258 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 181 transitions, 675 flow [2022-09-20 20:28:36,258 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) [2022-09-20 20:28:36,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:36,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:36,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 20:28:36,259 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)] === [2022-09-20 20:28:36,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:36,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1805213344, now seen corresponding path program 1 times [2022-09-20 20:28:36,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:36,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398553652] [2022-09-20 20:28:36,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:36,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:36,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:36,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:36,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398553652] [2022-09-20 20:28:36,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398553652] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:36,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:36,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:28:36,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066996351] [2022-09-20 20:28:36,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:36,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:28:36,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:28:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:28:36,297 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 183 [2022-09-20 20:28:36,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 181 transitions, 675 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) [2022-09-20 20:28:36,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:36,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 183 [2022-09-20 20:28:36,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:36,491 INFO L130 PetriNetUnfolder]: 590/2147 cut-off events. [2022-09-20 20:28:36,492 INFO L131 PetriNetUnfolder]: For 2031/2070 co-relation queries the response was YES. [2022-09-20 20:28:36,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 2147 events. 590/2147 cut-off events. For 2031/2070 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 17034 event pairs, 132 based on Foata normal form. 9/2007 useless extension candidates. Maximal degree in co-relation 4476. Up to 520 conditions per place. [2022-09-20 20:28:36,503 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 49 selfloop transitions, 1 changer transitions 0/191 dead transitions. [2022-09-20 20:28:36,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 191 transitions, 833 flow [2022-09-20 20:28:36,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:28:36,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:28:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2022-09-20 20:28:36,505 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-09-20 20:28:36,505 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2022-09-20 20:28:36,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2022-09-20 20:28:36,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:36,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2022-09-20 20:28:36,506 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) [2022-09-20 20:28:36,507 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) [2022-09-20 20:28:36,507 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) [2022-09-20 20:28:36,507 INFO L175 Difference]: Start difference. First operand has 202 places, 181 transitions, 675 flow. Second operand 3 states and 488 transitions. [2022-09-20 20:28:36,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 191 transitions, 833 flow [2022-09-20 20:28:36,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 191 transitions, 797 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-09-20 20:28:36,513 INFO L231 Difference]: Finished difference. Result has 183 places, 178 transitions, 643 flow [2022-09-20 20:28:36,514 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=641, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=643, PETRI_PLACES=183, PETRI_TRANSITIONS=178} [2022-09-20 20:28:36,514 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 23 predicate places. [2022-09-20 20:28:36,514 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 178 transitions, 643 flow [2022-09-20 20:28:36,514 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) [2022-09-20 20:28:36,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:36,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:36,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 20:28:36,515 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)] === [2022-09-20 20:28:36,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:36,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1806226238, now seen corresponding path program 1 times [2022-09-20 20:28:36,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:36,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899849476] [2022-09-20 20:28:36,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:36,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:36,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:36,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899849476] [2022-09-20 20:28:36,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899849476] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:36,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:36,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:28:36,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502660940] [2022-09-20 20:28:36,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:36,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:28:36,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:36,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:28:36,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:28:36,551 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 183 [2022-09-20 20:28:36,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 178 transitions, 643 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) [2022-09-20 20:28:36,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:36,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 183 [2022-09-20 20:28:36,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:36,837 INFO L130 PetriNetUnfolder]: 781/2746 cut-off events. [2022-09-20 20:28:36,837 INFO L131 PetriNetUnfolder]: For 2376/2398 co-relation queries the response was YES. [2022-09-20 20:28:36,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6243 conditions, 2746 events. 781/2746 cut-off events. For 2376/2398 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 24544 event pairs, 209 based on Foata normal form. 9/2664 useless extension candidates. Maximal degree in co-relation 5902. Up to 802 conditions per place. [2022-09-20 20:28:36,853 INFO L137 encePairwiseOnDemand]: 173/183 looper letters, 64 selfloop transitions, 24 changer transitions 11/233 dead transitions. [2022-09-20 20:28:36,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 233 transitions, 1092 flow [2022-09-20 20:28:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:28:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:28:36,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1118 transitions. [2022-09-20 20:28:36,855 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8727556596409055 [2022-09-20 20:28:36,855 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1118 transitions. [2022-09-20 20:28:36,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1118 transitions. [2022-09-20 20:28:36,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:36,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1118 transitions. [2022-09-20 20:28:36,857 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) [2022-09-20 20:28:36,859 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) [2022-09-20 20:28:36,859 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) [2022-09-20 20:28:36,859 INFO L175 Difference]: Start difference. First operand has 183 places, 178 transitions, 643 flow. Second operand 7 states and 1118 transitions. [2022-09-20 20:28:36,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 233 transitions, 1092 flow [2022-09-20 20:28:36,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 233 transitions, 1091 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 20:28:36,866 INFO L231 Difference]: Finished difference. Result has 192 places, 192 transitions, 817 flow [2022-09-20 20:28:36,867 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=817, PETRI_PLACES=192, PETRI_TRANSITIONS=192} [2022-09-20 20:28:36,867 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 32 predicate places. [2022-09-20 20:28:36,867 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 192 transitions, 817 flow [2022-09-20 20:28:36,867 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) [2022-09-20 20:28:36,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:36,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:36,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 20:28:36,868 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)] === [2022-09-20 20:28:36,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:36,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1278443168, now seen corresponding path program 1 times [2022-09-20 20:28:36,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:36,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120623208] [2022-09-20 20:28:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:36,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:36,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:36,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:36,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:36,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120623208] [2022-09-20 20:28:36,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120623208] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:36,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:36,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:28:36,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968822278] [2022-09-20 20:28:36,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:36,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:28:36,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:36,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:28:36,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:28:36,970 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-09-20 20:28:36,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 192 transitions, 817 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) [2022-09-20 20:28:36,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:36,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-09-20 20:28:36,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:37,602 INFO L130 PetriNetUnfolder]: 1778/4301 cut-off events. [2022-09-20 20:28:37,602 INFO L131 PetriNetUnfolder]: For 8204/8285 co-relation queries the response was YES. [2022-09-20 20:28:37,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12690 conditions, 4301 events. 1778/4301 cut-off events. For 8204/8285 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 35726 event pairs, 377 based on Foata normal form. 58/4248 useless extension candidates. Maximal degree in co-relation 12329. Up to 1782 conditions per place. [2022-09-20 20:28:37,627 INFO L137 encePairwiseOnDemand]: 169/183 looper letters, 127 selfloop transitions, 51 changer transitions 14/302 dead transitions. [2022-09-20 20:28:37,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 302 transitions, 1872 flow [2022-09-20 20:28:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 20:28:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 20:28:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1861 transitions. [2022-09-20 20:28:37,630 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7263856362217018 [2022-09-20 20:28:37,630 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1861 transitions. [2022-09-20 20:28:37,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1861 transitions. [2022-09-20 20:28:37,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:37,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1861 transitions. [2022-09-20 20:28:37,634 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) [2022-09-20 20:28:37,636 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) [2022-09-20 20:28:37,637 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) [2022-09-20 20:28:37,637 INFO L175 Difference]: Start difference. First operand has 192 places, 192 transitions, 817 flow. Second operand 14 states and 1861 transitions. [2022-09-20 20:28:37,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 302 transitions, 1872 flow [2022-09-20 20:28:37,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 302 transitions, 1872 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 20:28:37,659 INFO L231 Difference]: Finished difference. Result has 211 places, 220 transitions, 1250 flow [2022-09-20 20:28:37,660 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=817, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1250, PETRI_PLACES=211, PETRI_TRANSITIONS=220} [2022-09-20 20:28:37,660 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 51 predicate places. [2022-09-20 20:28:37,660 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 220 transitions, 1250 flow [2022-09-20 20:28:37,661 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) [2022-09-20 20:28:37,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:37,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:37,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 20:28:37,661 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)] === [2022-09-20 20:28:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:37,661 INFO L85 PathProgramCache]: Analyzing trace with hash 449319702, now seen corresponding path program 2 times [2022-09-20 20:28:37,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:37,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554447163] [2022-09-20 20:28:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:37,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:37,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:37,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:37,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554447163] [2022-09-20 20:28:37,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554447163] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:37,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:37,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:28:37,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220771480] [2022-09-20 20:28:37,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:37,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:28:37,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:37,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:28:37,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:28:37,762 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-09-20 20:28:37,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 220 transitions, 1250 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) [2022-09-20 20:28:37,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:37,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-09-20 20:28:37,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:38,443 INFO L130 PetriNetUnfolder]: 1767/4351 cut-off events. [2022-09-20 20:28:38,443 INFO L131 PetriNetUnfolder]: For 11662/11776 co-relation queries the response was YES. [2022-09-20 20:28:38,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14023 conditions, 4351 events. 1767/4351 cut-off events. For 11662/11776 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 36550 event pairs, 448 based on Foata normal form. 82/4293 useless extension candidates. Maximal degree in co-relation 13668. Up to 1665 conditions per place. [2022-09-20 20:28:38,468 INFO L137 encePairwiseOnDemand]: 168/183 looper letters, 122 selfloop transitions, 71 changer transitions 38/341 dead transitions. [2022-09-20 20:28:38,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 341 transitions, 2623 flow [2022-09-20 20:28:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:28:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:28:38,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2120 transitions. [2022-09-20 20:28:38,471 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7240437158469946 [2022-09-20 20:28:38,472 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2120 transitions. [2022-09-20 20:28:38,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2120 transitions. [2022-09-20 20:28:38,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:38,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2120 transitions. [2022-09-20 20:28:38,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 132.5) internal successors, (2120), 16 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:28:38,478 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) [2022-09-20 20:28:38,479 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) [2022-09-20 20:28:38,479 INFO L175 Difference]: Start difference. First operand has 211 places, 220 transitions, 1250 flow. Second operand 16 states and 2120 transitions. [2022-09-20 20:28:38,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 341 transitions, 2623 flow [2022-09-20 20:28:38,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 341 transitions, 2563 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-09-20 20:28:38,508 INFO L231 Difference]: Finished difference. Result has 228 places, 237 transitions, 1603 flow [2022-09-20 20:28:38,508 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1603, PETRI_PLACES=228, PETRI_TRANSITIONS=237} [2022-09-20 20:28:38,509 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 68 predicate places. [2022-09-20 20:28:38,509 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 237 transitions, 1603 flow [2022-09-20 20:28:38,510 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) [2022-09-20 20:28:38,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:38,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:38,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 20:28:38,510 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)] === [2022-09-20 20:28:38,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:38,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1577092106, now seen corresponding path program 1 times [2022-09-20 20:28:38,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:38,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240420625] [2022-09-20 20:28:38,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:38,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:38,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:38,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:38,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:38,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240420625] [2022-09-20 20:28:38,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240420625] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:38,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:38,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:28:38,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66631681] [2022-09-20 20:28:38,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:38,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:28:38,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:38,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:28:38,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:28:38,600 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-09-20 20:28:38,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 237 transitions, 1603 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) [2022-09-20 20:28:38,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:38,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-09-20 20:28:38,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:39,239 INFO L130 PetriNetUnfolder]: 1419/3711 cut-off events. [2022-09-20 20:28:39,239 INFO L131 PetriNetUnfolder]: For 14407/14579 co-relation queries the response was YES. [2022-09-20 20:28:39,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12417 conditions, 3711 events. 1419/3711 cut-off events. For 14407/14579 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 31381 event pairs, 278 based on Foata normal form. 163/3754 useless extension candidates. Maximal degree in co-relation 12312. Up to 772 conditions per place. [2022-09-20 20:28:39,267 INFO L137 encePairwiseOnDemand]: 160/183 looper letters, 139 selfloop transitions, 62 changer transitions 43/354 dead transitions. [2022-09-20 20:28:39,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 354 transitions, 2863 flow [2022-09-20 20:28:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:28:39,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:28:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2144 transitions. [2022-09-20 20:28:39,271 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.73224043715847 [2022-09-20 20:28:39,271 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2144 transitions. [2022-09-20 20:28:39,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2144 transitions. [2022-09-20 20:28:39,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:39,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2144 transitions. [2022-09-20 20:28:39,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 134.0) internal successors, (2144), 16 states have internal predecessors, (2144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:28:39,278 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) [2022-09-20 20:28:39,278 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) [2022-09-20 20:28:39,278 INFO L175 Difference]: Start difference. First operand has 228 places, 237 transitions, 1603 flow. Second operand 16 states and 2144 transitions. [2022-09-20 20:28:39,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 354 transitions, 2863 flow [2022-09-20 20:28:39,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 354 transitions, 2792 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-09-20 20:28:39,320 INFO L231 Difference]: Finished difference. Result has 244 places, 244 transitions, 1826 flow [2022-09-20 20:28:39,321 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1826, PETRI_PLACES=244, PETRI_TRANSITIONS=244} [2022-09-20 20:28:39,321 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 84 predicate places. [2022-09-20 20:28:39,321 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 244 transitions, 1826 flow [2022-09-20 20:28:39,322 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) [2022-09-20 20:28:39,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:39,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:39,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 20:28:39,322 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:28:39,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:39,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1354881048, now seen corresponding path program 1 times [2022-09-20 20:28:39,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:39,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562309503] [2022-09-20 20:28:39,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:39,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:39,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:39,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562309503] [2022-09-20 20:28:39,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562309503] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:39,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:39,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:28:39,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72579821] [2022-09-20 20:28:39,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:39,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:28:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:39,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:28:39,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:28:39,424 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-09-20 20:28:39,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 244 transitions, 1826 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) [2022-09-20 20:28:39,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:39,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-09-20 20:28:39,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:40,139 INFO L130 PetriNetUnfolder]: 1338/3679 cut-off events. [2022-09-20 20:28:40,139 INFO L131 PetriNetUnfolder]: For 18278/18449 co-relation queries the response was YES. [2022-09-20 20:28:40,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12747 conditions, 3679 events. 1338/3679 cut-off events. For 18278/18449 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 31287 event pairs, 117 based on Foata normal form. 167/3726 useless extension candidates. Maximal degree in co-relation 12503. Up to 887 conditions per place. [2022-09-20 20:28:40,169 INFO L137 encePairwiseOnDemand]: 166/183 looper letters, 168 selfloop transitions, 58 changer transitions 27/363 dead transitions. [2022-09-20 20:28:40,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 363 transitions, 3233 flow [2022-09-20 20:28:40,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 20:28:40,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 20:28:40,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1639 transitions. [2022-09-20 20:28:40,172 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7463570127504554 [2022-09-20 20:28:40,172 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1639 transitions. [2022-09-20 20:28:40,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1639 transitions. [2022-09-20 20:28:40,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:40,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1639 transitions. [2022-09-20 20:28:40,175 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) [2022-09-20 20:28:40,177 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) [2022-09-20 20:28:40,178 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) [2022-09-20 20:28:40,178 INFO L175 Difference]: Start difference. First operand has 244 places, 244 transitions, 1826 flow. Second operand 12 states and 1639 transitions. [2022-09-20 20:28:40,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 363 transitions, 3233 flow [2022-09-20 20:28:40,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 363 transitions, 3044 flow, removed 68 selfloop flow, removed 6 redundant places. [2022-09-20 20:28:40,237 INFO L231 Difference]: Finished difference. Result has 254 places, 261 transitions, 2075 flow [2022-09-20 20:28:40,238 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1710, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2075, PETRI_PLACES=254, PETRI_TRANSITIONS=261} [2022-09-20 20:28:40,238 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 94 predicate places. [2022-09-20 20:28:40,238 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 261 transitions, 2075 flow [2022-09-20 20:28:40,238 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) [2022-09-20 20:28:40,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:40,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:40,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 20:28:40,239 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:28:40,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:40,239 INFO L85 PathProgramCache]: Analyzing trace with hash -2035078910, now seen corresponding path program 1 times [2022-09-20 20:28:40,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:40,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142479871] [2022-09-20 20:28:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:40,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:40,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:40,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142479871] [2022-09-20 20:28:40,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142479871] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:40,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:40,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:28:40,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928018599] [2022-09-20 20:28:40,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:40,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:28:40,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:40,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:28:40,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:28:40,344 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-09-20 20:28:40,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 261 transitions, 2075 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) [2022-09-20 20:28:40,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:40,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-09-20 20:28:40,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:41,049 INFO L130 PetriNetUnfolder]: 1169/3506 cut-off events. [2022-09-20 20:28:41,049 INFO L131 PetriNetUnfolder]: For 17677/17793 co-relation queries the response was YES. [2022-09-20 20:28:41,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12464 conditions, 3506 events. 1169/3506 cut-off events. For 17677/17793 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 29975 event pairs, 182 based on Foata normal form. 102/3483 useless extension candidates. Maximal degree in co-relation 12366. Up to 760 conditions per place. [2022-09-20 20:28:41,076 INFO L137 encePairwiseOnDemand]: 163/183 looper letters, 152 selfloop transitions, 67 changer transitions 35/364 dead transitions. [2022-09-20 20:28:41,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 364 transitions, 3291 flow [2022-09-20 20:28:41,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 20:28:41,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 20:28:41,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1891 transitions. [2022-09-20 20:28:41,079 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7380952380952381 [2022-09-20 20:28:41,079 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1891 transitions. [2022-09-20 20:28:41,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1891 transitions. [2022-09-20 20:28:41,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:41,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1891 transitions. [2022-09-20 20:28:41,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 135.07142857142858) internal successors, (1891), 14 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:28:41,083 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) [2022-09-20 20:28:41,084 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) [2022-09-20 20:28:41,084 INFO L175 Difference]: Start difference. First operand has 254 places, 261 transitions, 2075 flow. Second operand 14 states and 1891 transitions. [2022-09-20 20:28:41,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 364 transitions, 3291 flow [2022-09-20 20:28:41,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 364 transitions, 3213 flow, removed 25 selfloop flow, removed 2 redundant places. [2022-09-20 20:28:41,134 INFO L231 Difference]: Finished difference. Result has 268 places, 263 transitions, 2195 flow [2022-09-20 20:28:41,134 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2195, PETRI_PLACES=268, PETRI_TRANSITIONS=263} [2022-09-20 20:28:41,134 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 108 predicate places. [2022-09-20 20:28:41,135 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 263 transitions, 2195 flow [2022-09-20 20:28:41,135 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) [2022-09-20 20:28:41,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:41,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:41,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-20 20:28:41,136 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:28:41,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:41,136 INFO L85 PathProgramCache]: Analyzing trace with hash -426273858, now seen corresponding path program 1 times [2022-09-20 20:28:41,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:41,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400703985] [2022-09-20 20:28:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:41,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:41,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:41,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:41,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400703985] [2022-09-20 20:28:41,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400703985] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:41,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:41,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-20 20:28:41,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546203229] [2022-09-20 20:28:41,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:41,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-20 20:28:41,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:41,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-20 20:28:41,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-09-20 20:28:41,236 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-09-20 20:28:41,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 263 transitions, 2195 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) [2022-09-20 20:28:41,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:41,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-09-20 20:28:41,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:41,852 INFO L130 PetriNetUnfolder]: 1124/3368 cut-off events. [2022-09-20 20:28:41,852 INFO L131 PetriNetUnfolder]: For 19351/19463 co-relation queries the response was YES. [2022-09-20 20:28:41,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12223 conditions, 3368 events. 1124/3368 cut-off events. For 19351/19463 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 28850 event pairs, 275 based on Foata normal form. 101/3339 useless extension candidates. Maximal degree in co-relation 11965. Up to 1009 conditions per place. [2022-09-20 20:28:41,881 INFO L137 encePairwiseOnDemand]: 167/183 looper letters, 150 selfloop transitions, 68 changer transitions 17/345 dead transitions. [2022-09-20 20:28:41,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 345 transitions, 3250 flow [2022-09-20 20:28:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 20:28:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 20:28:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1618 transitions. [2022-09-20 20:28:41,883 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7367941712204007 [2022-09-20 20:28:41,883 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1618 transitions. [2022-09-20 20:28:41,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1618 transitions. [2022-09-20 20:28:41,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:41,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1618 transitions. [2022-09-20 20:28:41,885 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) [2022-09-20 20:28:41,887 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) [2022-09-20 20:28:41,887 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) [2022-09-20 20:28:41,887 INFO L175 Difference]: Start difference. First operand has 268 places, 263 transitions, 2195 flow. Second operand 12 states and 1618 transitions. [2022-09-20 20:28:41,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 345 transitions, 3250 flow [2022-09-20 20:28:41,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 345 transitions, 3168 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-09-20 20:28:41,948 INFO L231 Difference]: Finished difference. Result has 274 places, 266 transitions, 2369 flow [2022-09-20 20:28:41,949 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2369, PETRI_PLACES=274, PETRI_TRANSITIONS=266} [2022-09-20 20:28:41,949 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 114 predicate places. [2022-09-20 20:28:41,949 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 266 transitions, 2369 flow [2022-09-20 20:28:41,949 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) [2022-09-20 20:28:41,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:41,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-20 20:28:41,950 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)] === [2022-09-20 20:28:41,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1430549014, now seen corresponding path program 2 times [2022-09-20 20:28:41,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:41,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809833053] [2022-09-20 20:28:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:41,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:42,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:42,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809833053] [2022-09-20 20:28:42,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809833053] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:42,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:42,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:28:42,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232444920] [2022-09-20 20:28:42,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:42,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:28:42,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:28:42,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:28:42,046 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-09-20 20:28:42,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 266 transitions, 2369 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) [2022-09-20 20:28:42,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:42,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-09-20 20:28:42,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:42,695 INFO L130 PetriNetUnfolder]: 956/3036 cut-off events. [2022-09-20 20:28:42,695 INFO L131 PetriNetUnfolder]: For 20575/20694 co-relation queries the response was YES. [2022-09-20 20:28:42,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11246 conditions, 3036 events. 956/3036 cut-off events. For 20575/20694 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 25839 event pairs, 224 based on Foata normal form. 103/3016 useless extension candidates. Maximal degree in co-relation 11139. Up to 827 conditions per place. [2022-09-20 20:28:42,720 INFO L137 encePairwiseOnDemand]: 169/183 looper letters, 134 selfloop transitions, 74 changer transitions 21/334 dead transitions. [2022-09-20 20:28:42,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 334 transitions, 3233 flow [2022-09-20 20:28:42,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-20 20:28:42,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-20 20:28:42,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1982 transitions. [2022-09-20 20:28:42,723 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.722040072859745 [2022-09-20 20:28:42,723 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1982 transitions. [2022-09-20 20:28:42,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1982 transitions. [2022-09-20 20:28:42,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:42,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1982 transitions. [2022-09-20 20:28:42,725 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) [2022-09-20 20:28:42,727 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) [2022-09-20 20:28:42,728 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) [2022-09-20 20:28:42,728 INFO L175 Difference]: Start difference. First operand has 274 places, 266 transitions, 2369 flow. Second operand 15 states and 1982 transitions. [2022-09-20 20:28:42,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 334 transitions, 3233 flow [2022-09-20 20:28:42,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 334 transitions, 3194 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-20 20:28:42,784 INFO L231 Difference]: Finished difference. Result has 282 places, 252 transitions, 2361 flow [2022-09-20 20:28:42,784 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2298, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2361, PETRI_PLACES=282, PETRI_TRANSITIONS=252} [2022-09-20 20:28:42,784 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 122 predicate places. [2022-09-20 20:28:42,784 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 252 transitions, 2361 flow [2022-09-20 20:28:42,785 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) [2022-09-20 20:28:42,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:42,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:42,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-20 20:28:42,785 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:28:42,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1627227213, now seen corresponding path program 1 times [2022-09-20 20:28:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:42,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975160943] [2022-09-20 20:28:42,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:42,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:42,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975160943] [2022-09-20 20:28:42,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975160943] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:42,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:42,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:28:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844404899] [2022-09-20 20:28:42,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:42,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:28:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:28:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:28:42,836 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-09-20 20:28:42,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 252 transitions, 2361 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) [2022-09-20 20:28:42,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:42,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-09-20 20:28:42,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:43,180 INFO L130 PetriNetUnfolder]: 567/2067 cut-off events. [2022-09-20 20:28:43,180 INFO L131 PetriNetUnfolder]: For 14584/14636 co-relation queries the response was YES. [2022-09-20 20:28:43,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 2067 events. 567/2067 cut-off events. For 14584/14636 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 16023 event pairs, 91 based on Foata normal form. 30/2012 useless extension candidates. Maximal degree in co-relation 7478. Up to 278 conditions per place. [2022-09-20 20:28:43,198 INFO L137 encePairwiseOnDemand]: 173/183 looper letters, 109 selfloop transitions, 36 changer transitions 44/321 dead transitions. [2022-09-20 20:28:43,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 321 transitions, 3269 flow [2022-09-20 20:28:43,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:28:43,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:28:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1625 transitions. [2022-09-20 20:28:43,200 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8072528564331843 [2022-09-20 20:28:43,200 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1625 transitions. [2022-09-20 20:28:43,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1625 transitions. [2022-09-20 20:28:43,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:43,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1625 transitions. [2022-09-20 20:28:43,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 147.72727272727272) internal successors, (1625), 11 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:28:43,203 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) [2022-09-20 20:28:43,203 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) [2022-09-20 20:28:43,204 INFO L175 Difference]: Start difference. First operand has 282 places, 252 transitions, 2361 flow. Second operand 11 states and 1625 transitions. [2022-09-20 20:28:43,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 321 transitions, 3269 flow [2022-09-20 20:28:43,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 321 transitions, 2991 flow, removed 30 selfloop flow, removed 20 redundant places. [2022-09-20 20:28:43,241 INFO L231 Difference]: Finished difference. Result has 270 places, 235 transitions, 2008 flow [2022-09-20 20:28:43,241 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2008, PETRI_PLACES=270, PETRI_TRANSITIONS=235} [2022-09-20 20:28:43,241 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 110 predicate places. [2022-09-20 20:28:43,241 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 235 transitions, 2008 flow [2022-09-20 20:28:43,242 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) [2022-09-20 20:28:43,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:43,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:43,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-20 20:28:43,242 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:28:43,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:43,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1230280557, now seen corresponding path program 1 times [2022-09-20 20:28:43,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:43,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454619399] [2022-09-20 20:28:43,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:43,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:43,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:43,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454619399] [2022-09-20 20:28:43,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454619399] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:43,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:43,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:28:43,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412280032] [2022-09-20 20:28:43,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:43,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:28:43,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:43,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:28:43,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:28:43,300 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-09-20 20:28:43,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 235 transitions, 2008 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) [2022-09-20 20:28:43,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:43,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-09-20 20:28:43,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:43,628 INFO L130 PetriNetUnfolder]: 531/1952 cut-off events. [2022-09-20 20:28:43,628 INFO L131 PetriNetUnfolder]: For 11448/11497 co-relation queries the response was YES. [2022-09-20 20:28:43,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6855 conditions, 1952 events. 531/1952 cut-off events. For 11448/11497 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 14897 event pairs, 112 based on Foata normal form. 22/1881 useless extension candidates. Maximal degree in co-relation 6739. Up to 290 conditions per place. [2022-09-20 20:28:43,643 INFO L137 encePairwiseOnDemand]: 171/183 looper letters, 109 selfloop transitions, 44 changer transitions 25/310 dead transitions. [2022-09-20 20:28:43,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 310 transitions, 3019 flow [2022-09-20 20:28:43,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 20:28:43,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 20:28:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1767 transitions. [2022-09-20 20:28:43,645 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8046448087431693 [2022-09-20 20:28:43,645 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1767 transitions. [2022-09-20 20:28:43,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1767 transitions. [2022-09-20 20:28:43,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:43,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1767 transitions. [2022-09-20 20:28:43,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.25) internal successors, (1767), 12 states have internal predecessors, (1767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:28:43,649 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) [2022-09-20 20:28:43,650 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) [2022-09-20 20:28:43,650 INFO L175 Difference]: Start difference. First operand has 270 places, 235 transitions, 2008 flow. Second operand 12 states and 1767 transitions. [2022-09-20 20:28:43,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 310 transitions, 3019 flow [2022-09-20 20:28:43,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 310 transitions, 2749 flow, removed 21 selfloop flow, removed 20 redundant places. [2022-09-20 20:28:43,678 INFO L231 Difference]: Finished difference. Result has 268 places, 245 transitions, 2034 flow [2022-09-20 20:28:43,678 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2034, PETRI_PLACES=268, PETRI_TRANSITIONS=245} [2022-09-20 20:28:43,678 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 108 predicate places. [2022-09-20 20:28:43,678 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 245 transitions, 2034 flow [2022-09-20 20:28:43,679 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) [2022-09-20 20:28:43,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:43,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:43,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-20 20:28:43,679 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:28:43,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:43,679 INFO L85 PathProgramCache]: Analyzing trace with hash 176899237, now seen corresponding path program 2 times [2022-09-20 20:28:43,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:43,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668762908] [2022-09-20 20:28:43,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:43,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:43,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:43,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668762908] [2022-09-20 20:28:43,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668762908] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:43,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:43,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:28:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113213367] [2022-09-20 20:28:43,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:43,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:28:43,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:43,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:28:43,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:28:43,735 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-09-20 20:28:43,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 245 transitions, 2034 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) [2022-09-20 20:28:43,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:43,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-09-20 20:28:43,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:44,051 INFO L130 PetriNetUnfolder]: 540/1988 cut-off events. [2022-09-20 20:28:44,051 INFO L131 PetriNetUnfolder]: For 10388/10472 co-relation queries the response was YES. [2022-09-20 20:28:44,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6873 conditions, 1988 events. 540/1988 cut-off events. For 10388/10472 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 15279 event pairs, 104 based on Foata normal form. 50/1929 useless extension candidates. Maximal degree in co-relation 6408. Up to 278 conditions per place. [2022-09-20 20:28:44,067 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 104 selfloop transitions, 52 changer transitions 36/324 dead transitions. [2022-09-20 20:28:44,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 324 transitions, 3085 flow [2022-09-20 20:28:44,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 20:28:44,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 20:28:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1769 transitions. [2022-09-20 20:28:44,069 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2022-09-20 20:28:44,069 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1769 transitions. [2022-09-20 20:28:44,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1769 transitions. [2022-09-20 20:28:44,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:44,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1769 transitions. [2022-09-20 20:28:44,071 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) [2022-09-20 20:28:44,073 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) [2022-09-20 20:28:44,073 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) [2022-09-20 20:28:44,073 INFO L175 Difference]: Start difference. First operand has 268 places, 245 transitions, 2034 flow. Second operand 12 states and 1769 transitions. [2022-09-20 20:28:44,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 324 transitions, 3085 flow [2022-09-20 20:28:44,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 324 transitions, 2992 flow, removed 27 selfloop flow, removed 4 redundant places. [2022-09-20 20:28:44,101 INFO L231 Difference]: Finished difference. Result has 279 places, 251 transitions, 2183 flow [2022-09-20 20:28:44,102 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2183, PETRI_PLACES=279, PETRI_TRANSITIONS=251} [2022-09-20 20:28:44,103 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 119 predicate places. [2022-09-20 20:28:44,103 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 251 transitions, 2183 flow [2022-09-20 20:28:44,103 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) [2022-09-20 20:28:44,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:44,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:44,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-20 20:28:44,103 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)] === [2022-09-20 20:28:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:44,104 INFO L85 PathProgramCache]: Analyzing trace with hash 611284229, now seen corresponding path program 2 times [2022-09-20 20:28:44,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:44,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902359985] [2022-09-20 20:28:44,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:44,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:44,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:44,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902359985] [2022-09-20 20:28:44,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902359985] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:44,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:44,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 20:28:44,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824015517] [2022-09-20 20:28:44,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:44,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 20:28:44,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:44,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 20:28:44,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 20:28:44,150 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 183 [2022-09-20 20:28:44,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 251 transitions, 2183 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) [2022-09-20 20:28:44,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:44,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 183 [2022-09-20 20:28:44,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:44,387 INFO L130 PetriNetUnfolder]: 435/1926 cut-off events. [2022-09-20 20:28:44,387 INFO L131 PetriNetUnfolder]: For 11972/12066 co-relation queries the response was YES. [2022-09-20 20:28:44,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6583 conditions, 1926 events. 435/1926 cut-off events. For 11972/12066 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 15088 event pairs, 106 based on Foata normal form. 46/1847 useless extension candidates. Maximal degree in co-relation 6410. Up to 346 conditions per place. [2022-09-20 20:28:44,403 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 89 selfloop transitions, 10 changer transitions 8/273 dead transitions. [2022-09-20 20:28:44,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 273 transitions, 2602 flow [2022-09-20 20:28:44,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 20:28:44,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 20:28:44,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2022-09-20 20:28:44,404 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8784153005464481 [2022-09-20 20:28:44,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2022-09-20 20:28:44,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2022-09-20 20:28:44,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:44,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2022-09-20 20:28:44,405 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) [2022-09-20 20:28:44,406 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) [2022-09-20 20:28:44,406 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) [2022-09-20 20:28:44,406 INFO L175 Difference]: Start difference. First operand has 279 places, 251 transitions, 2183 flow. Second operand 4 states and 643 transitions. [2022-09-20 20:28:44,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 273 transitions, 2602 flow [2022-09-20 20:28:44,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 273 transitions, 2466 flow, removed 17 selfloop flow, removed 8 redundant places. [2022-09-20 20:28:44,436 INFO L231 Difference]: Finished difference. Result has 276 places, 250 transitions, 2089 flow [2022-09-20 20:28:44,436 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2089, PETRI_PLACES=276, PETRI_TRANSITIONS=250} [2022-09-20 20:28:44,436 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 116 predicate places. [2022-09-20 20:28:44,436 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 250 transitions, 2089 flow [2022-09-20 20:28:44,437 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) [2022-09-20 20:28:44,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:44,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:44,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-20 20:28:44,437 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)] === [2022-09-20 20:28:44,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash -147696905, now seen corresponding path program 3 times [2022-09-20 20:28:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:44,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583813441] [2022-09-20 20:28:44,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:44,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:44,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:44,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:44,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583813441] [2022-09-20 20:28:44,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583813441] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:44,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:44,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:28:44,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069041688] [2022-09-20 20:28:44,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:44,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:28:44,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:44,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:28:44,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:28:44,505 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-09-20 20:28:44,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 250 transitions, 2089 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) [2022-09-20 20:28:44,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:44,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-09-20 20:28:44,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:44,883 INFO L130 PetriNetUnfolder]: 493/1999 cut-off events. [2022-09-20 20:28:44,883 INFO L131 PetriNetUnfolder]: For 11999/12192 co-relation queries the response was YES. [2022-09-20 20:28:44,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6926 conditions, 1999 events. 493/1999 cut-off events. For 11999/12192 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 15766 event pairs, 112 based on Foata normal form. 101/1982 useless extension candidates. Maximal degree in co-relation 6812. Up to 259 conditions per place. [2022-09-20 20:28:44,899 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 98 selfloop transitions, 52 changer transitions 43/325 dead transitions. [2022-09-20 20:28:44,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 325 transitions, 3202 flow [2022-09-20 20:28:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-20 20:28:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-20 20:28:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2047 transitions. [2022-09-20 20:28:44,901 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7989851678376269 [2022-09-20 20:28:44,901 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2047 transitions. [2022-09-20 20:28:44,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2047 transitions. [2022-09-20 20:28:44,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:44,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2047 transitions. [2022-09-20 20:28:44,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 146.21428571428572) internal successors, (2047), 14 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:28:44,906 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) [2022-09-20 20:28:44,906 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) [2022-09-20 20:28:44,906 INFO L175 Difference]: Start difference. First operand has 276 places, 250 transitions, 2089 flow. Second operand 14 states and 2047 transitions. [2022-09-20 20:28:44,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 325 transitions, 3202 flow [2022-09-20 20:28:44,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 325 transitions, 3140 flow, removed 22 selfloop flow, removed 4 redundant places. [2022-09-20 20:28:44,937 INFO L231 Difference]: Finished difference. Result has 290 places, 250 transitions, 2235 flow [2022-09-20 20:28:44,937 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2235, PETRI_PLACES=290, PETRI_TRANSITIONS=250} [2022-09-20 20:28:44,938 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 130 predicate places. [2022-09-20 20:28:44,938 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 250 transitions, 2235 flow [2022-09-20 20:28:44,938 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) [2022-09-20 20:28:44,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:44,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:44,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-20 20:28:44,938 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:28:44,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:44,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1391156979, now seen corresponding path program 1 times [2022-09-20 20:28:44,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:44,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259142502] [2022-09-20 20:28:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:44,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:44,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:44,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259142502] [2022-09-20 20:28:44,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259142502] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:44,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:44,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:28:44,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408303674] [2022-09-20 20:28:44,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:44,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:28:44,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:44,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:28:44,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:28:44,995 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-09-20 20:28:44,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 250 transitions, 2235 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) [2022-09-20 20:28:44,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:44,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-09-20 20:28:44,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:45,298 INFO L130 PetriNetUnfolder]: 417/1784 cut-off events. [2022-09-20 20:28:45,298 INFO L131 PetriNetUnfolder]: For 12641/12809 co-relation queries the response was YES. [2022-09-20 20:28:45,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6489 conditions, 1784 events. 417/1784 cut-off events. For 12641/12809 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 13453 event pairs, 98 based on Foata normal form. 102/1792 useless extension candidates. Maximal degree in co-relation 6298. Up to 284 conditions per place. [2022-09-20 20:28:45,312 INFO L137 encePairwiseOnDemand]: 173/183 looper letters, 93 selfloop transitions, 39 changer transitions 37/292 dead transitions. [2022-09-20 20:28:45,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 292 transitions, 2928 flow [2022-09-20 20:28:45,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:28:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:28:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1599 transitions. [2022-09-20 20:28:45,314 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7943368107302533 [2022-09-20 20:28:45,314 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1599 transitions. [2022-09-20 20:28:45,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1599 transitions. [2022-09-20 20:28:45,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:45,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1599 transitions. [2022-09-20 20:28:45,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 145.36363636363637) internal successors, (1599), 11 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:28:45,317 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) [2022-09-20 20:28:45,317 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) [2022-09-20 20:28:45,317 INFO L175 Difference]: Start difference. First operand has 290 places, 250 transitions, 2235 flow. Second operand 11 states and 1599 transitions. [2022-09-20 20:28:45,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 292 transitions, 2928 flow [2022-09-20 20:28:45,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 292 transitions, 2804 flow, removed 14 selfloop flow, removed 13 redundant places. [2022-09-20 20:28:45,348 INFO L231 Difference]: Finished difference. Result has 287 places, 226 transitions, 1810 flow [2022-09-20 20:28:45,348 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1810, PETRI_PLACES=287, PETRI_TRANSITIONS=226} [2022-09-20 20:28:45,349 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 127 predicate places. [2022-09-20 20:28:45,349 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 226 transitions, 1810 flow [2022-09-20 20:28:45,349 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) [2022-09-20 20:28:45,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:45,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:45,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-20 20:28:45,349 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:28:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:45,350 INFO L85 PathProgramCache]: Analyzing trace with hash -207047255, now seen corresponding path program 1 times [2022-09-20 20:28:45,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:45,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904734078] [2022-09-20 20:28:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:45,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:45,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:45,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904734078] [2022-09-20 20:28:45,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904734078] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:45,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:45,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:28:45,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719640867] [2022-09-20 20:28:45,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:45,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:28:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:28:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:28:45,406 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-09-20 20:28:45,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 226 transitions, 1810 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) [2022-09-20 20:28:45,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:45,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-09-20 20:28:45,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:45,650 INFO L130 PetriNetUnfolder]: 302/1426 cut-off events. [2022-09-20 20:28:45,650 INFO L131 PetriNetUnfolder]: For 8267/8396 co-relation queries the response was YES. [2022-09-20 20:28:45,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4882 conditions, 1426 events. 302/1426 cut-off events. For 8267/8396 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10031 event pairs, 56 based on Foata normal form. 99/1438 useless extension candidates. Maximal degree in co-relation 4782. Up to 157 conditions per place. [2022-09-20 20:28:45,661 INFO L137 encePairwiseOnDemand]: 171/183 looper letters, 91 selfloop transitions, 43 changer transitions 31/282 dead transitions. [2022-09-20 20:28:45,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 282 transitions, 2681 flow [2022-09-20 20:28:45,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:28:45,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:28:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1611 transitions. [2022-09-20 20:28:45,663 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8002980625931445 [2022-09-20 20:28:45,663 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1611 transitions. [2022-09-20 20:28:45,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1611 transitions. [2022-09-20 20:28:45,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:45,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1611 transitions. [2022-09-20 20:28:45,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 146.45454545454547) internal successors, (1611), 11 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:28:45,666 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) [2022-09-20 20:28:45,666 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) [2022-09-20 20:28:45,666 INFO L175 Difference]: Start difference. First operand has 287 places, 226 transitions, 1810 flow. Second operand 11 states and 1611 transitions. [2022-09-20 20:28:45,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 282 transitions, 2681 flow [2022-09-20 20:28:45,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 282 transitions, 2355 flow, removed 9 selfloop flow, removed 29 redundant places. [2022-09-20 20:28:45,688 INFO L231 Difference]: Finished difference. Result has 271 places, 223 transitions, 1673 flow [2022-09-20 20:28:45,689 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1523, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1673, PETRI_PLACES=271, PETRI_TRANSITIONS=223} [2022-09-20 20:28:45,689 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 111 predicate places. [2022-09-20 20:28:45,689 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 223 transitions, 1673 flow [2022-09-20 20:28:45,689 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) [2022-09-20 20:28:45,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:45,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:45,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-20 20:28:45,690 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)] === [2022-09-20 20:28:45,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:45,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1686518922, now seen corresponding path program 1 times [2022-09-20 20:28:45,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:45,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794803420] [2022-09-20 20:28:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:45,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:45,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:45,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:45,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794803420] [2022-09-20 20:28:45,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794803420] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:45,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:45,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:28:45,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990637843] [2022-09-20 20:28:45,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:45,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:28:45,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:45,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:28:45,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:28:45,746 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-09-20 20:28:45,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 223 transitions, 1673 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) [2022-09-20 20:28:45,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:45,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-09-20 20:28:45,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:45,942 INFO L130 PetriNetUnfolder]: 230/1074 cut-off events. [2022-09-20 20:28:45,942 INFO L131 PetriNetUnfolder]: For 5279/5408 co-relation queries the response was YES. [2022-09-20 20:28:45,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3500 conditions, 1074 events. 230/1074 cut-off events. For 5279/5408 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6699 event pairs, 50 based on Foata normal form. 97/1088 useless extension candidates. Maximal degree in co-relation 3240. Up to 142 conditions per place. [2022-09-20 20:28:45,949 INFO L137 encePairwiseOnDemand]: 173/183 looper letters, 47 selfloop transitions, 19 changer transitions 77/249 dead transitions. [2022-09-20 20:28:45,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 249 transitions, 2184 flow [2022-09-20 20:28:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:28:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:28:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1445 transitions. [2022-09-20 20:28:45,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7896174863387978 [2022-09-20 20:28:45,951 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1445 transitions. [2022-09-20 20:28:45,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1445 transitions. [2022-09-20 20:28:45,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:45,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1445 transitions. [2022-09-20 20:28:45,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.5) internal successors, (1445), 10 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:28:45,954 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) [2022-09-20 20:28:45,954 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) [2022-09-20 20:28:45,954 INFO L175 Difference]: Start difference. First operand has 271 places, 223 transitions, 1673 flow. Second operand 10 states and 1445 transitions. [2022-09-20 20:28:45,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 249 transitions, 2184 flow [2022-09-20 20:28:45,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 249 transitions, 2054 flow, removed 21 selfloop flow, removed 11 redundant places. [2022-09-20 20:28:45,971 INFO L231 Difference]: Finished difference. Result has 265 places, 162 transitions, 911 flow [2022-09-20 20:28:45,971 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1548, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=911, PETRI_PLACES=265, PETRI_TRANSITIONS=162} [2022-09-20 20:28:45,971 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 105 predicate places. [2022-09-20 20:28:45,971 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 162 transitions, 911 flow [2022-09-20 20:28:45,972 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) [2022-09-20 20:28:45,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:45,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:45,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-20 20:28:45,972 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)] === [2022-09-20 20:28:45,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash -34214137, now seen corresponding path program 2 times [2022-09-20 20:28:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:45,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057450472] [2022-09-20 20:28:45,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:45,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:46,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:46,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:46,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057450472] [2022-09-20 20:28:46,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057450472] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:46,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:46,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:28:46,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380595607] [2022-09-20 20:28:46,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:46,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:28:46,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:28:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:28:46,029 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-09-20 20:28:46,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 162 transitions, 911 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) [2022-09-20 20:28:46,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:46,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-09-20 20:28:46,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:46,186 INFO L130 PetriNetUnfolder]: 143/698 cut-off events. [2022-09-20 20:28:46,186 INFO L131 PetriNetUnfolder]: For 2687/2723 co-relation queries the response was YES. [2022-09-20 20:28:46,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2068 conditions, 698 events. 143/698 cut-off events. For 2687/2723 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3657 event pairs, 46 based on Foata normal form. 15/656 useless extension candidates. Maximal degree in co-relation 2022. Up to 84 conditions per place. [2022-09-20 20:28:46,191 INFO L137 encePairwiseOnDemand]: 172/183 looper letters, 44 selfloop transitions, 24 changer transitions 23/197 dead transitions. [2022-09-20 20:28:46,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 197 transitions, 1375 flow [2022-09-20 20:28:46,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:28:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:28:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1863 transitions. [2022-09-20 20:28:46,192 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7831021437578815 [2022-09-20 20:28:46,193 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1863 transitions. [2022-09-20 20:28:46,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1863 transitions. [2022-09-20 20:28:46,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:46,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1863 transitions. [2022-09-20 20:28:46,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 143.30769230769232) internal successors, (1863), 13 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:28:46,196 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) [2022-09-20 20:28:46,196 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) [2022-09-20 20:28:46,196 INFO L175 Difference]: Start difference. First operand has 265 places, 162 transitions, 911 flow. Second operand 13 states and 1863 transitions. [2022-09-20 20:28:46,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 197 transitions, 1375 flow [2022-09-20 20:28:46,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 197 transitions, 1019 flow, removed 22 selfloop flow, removed 56 redundant places. [2022-09-20 20:28:46,203 INFO L231 Difference]: Finished difference. Result has 201 places, 162 transitions, 719 flow [2022-09-20 20:28:46,204 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=185, 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=13, PETRI_FLOW=719, PETRI_PLACES=201, PETRI_TRANSITIONS=162} [2022-09-20 20:28:46,204 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 41 predicate places. [2022-09-20 20:28:46,204 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 162 transitions, 719 flow [2022-09-20 20:28:46,204 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) [2022-09-20 20:28:46,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:46,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:46,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-20 20:28:46,204 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)] === [2022-09-20 20:28:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1923984531, now seen corresponding path program 2 times [2022-09-20 20:28:46,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:46,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669584221] [2022-09-20 20:28:46,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:46,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:46,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:46,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669584221] [2022-09-20 20:28:46,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669584221] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:46,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:46,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 20:28:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460969066] [2022-09-20 20:28:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:46,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 20:28:46,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 20:28:46,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-20 20:28:46,232 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 183 [2022-09-20 20:28:46,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 162 transitions, 719 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) [2022-09-20 20:28:46,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:46,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 183 [2022-09-20 20:28:46,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:46,292 INFO L130 PetriNetUnfolder]: 102/584 cut-off events. [2022-09-20 20:28:46,293 INFO L131 PetriNetUnfolder]: For 1504/1526 co-relation queries the response was YES. [2022-09-20 20:28:46,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1436 conditions, 584 events. 102/584 cut-off events. For 1504/1526 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2727 event pairs, 31 based on Foata normal form. 15/546 useless extension candidates. Maximal degree in co-relation 1408. Up to 85 conditions per place. [2022-09-20 20:28:46,296 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 35 selfloop transitions, 8 changer transitions 2/168 dead transitions. [2022-09-20 20:28:46,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 168 transitions, 856 flow [2022-09-20 20:28:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 20:28:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 20:28:46,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 628 transitions. [2022-09-20 20:28:46,297 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8579234972677595 [2022-09-20 20:28:46,297 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 628 transitions. [2022-09-20 20:28:46,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 628 transitions. [2022-09-20 20:28:46,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:46,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 628 transitions. [2022-09-20 20:28:46,298 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) [2022-09-20 20:28:46,299 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) [2022-09-20 20:28:46,299 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) [2022-09-20 20:28:46,299 INFO L175 Difference]: Start difference. First operand has 201 places, 162 transitions, 719 flow. Second operand 4 states and 628 transitions. [2022-09-20 20:28:46,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 168 transitions, 856 flow [2022-09-20 20:28:46,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 168 transitions, 764 flow, removed 17 selfloop flow, removed 11 redundant places. [2022-09-20 20:28:46,303 INFO L231 Difference]: Finished difference. Result has 192 places, 162 transitions, 668 flow [2022-09-20 20:28:46,303 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=187, 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=192, PETRI_TRANSITIONS=162} [2022-09-20 20:28:46,304 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 32 predicate places. [2022-09-20 20:28:46,304 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 162 transitions, 668 flow [2022-09-20 20:28:46,304 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) [2022-09-20 20:28:46,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:28:46,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:46,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-20 20:28:46,304 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 20:28:46,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:28:46,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1478249847, now seen corresponding path program 1 times [2022-09-20 20:28:46,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:28:46,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155268336] [2022-09-20 20:28:46,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:28:46,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:28:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:28:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:28:46,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:28:46,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155268336] [2022-09-20 20:28:46,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155268336] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:28:46,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:28:46,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:28:46,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982407028] [2022-09-20 20:28:46,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:28:46,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:28:46,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:28:46,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:28:46,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:28:46,359 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-09-20 20:28:46,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 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) [2022-09-20 20:28:46,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:28:46,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-09-20 20:28:46,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:28:46,448 INFO L130 PetriNetUnfolder]: 111/563 cut-off events. [2022-09-20 20:28:46,448 INFO L131 PetriNetUnfolder]: For 1773/1800 co-relation queries the response was YES. [2022-09-20 20:28:46,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 563 events. 111/563 cut-off events. For 1773/1800 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2572 event pairs, 22 based on Foata normal form. 20/531 useless extension candidates. Maximal degree in co-relation 1410. Up to 79 conditions per place. [2022-09-20 20:28:46,451 INFO L137 encePairwiseOnDemand]: 173/183 looper letters, 0 selfloop transitions, 0 changer transitions 178/178 dead transitions. [2022-09-20 20:28:46,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 178 transitions, 937 flow [2022-09-20 20:28:46,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:28:46,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:28:46,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1287 transitions. [2022-09-20 20:28:46,452 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7814207650273224 [2022-09-20 20:28:46,452 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1287 transitions. [2022-09-20 20:28:46,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1287 transitions. [2022-09-20 20:28:46,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:28:46,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1287 transitions. [2022-09-20 20:28:46,454 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) [2022-09-20 20:28:46,455 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) [2022-09-20 20:28:46,455 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) [2022-09-20 20:28:46,455 INFO L175 Difference]: Start difference. First operand has 192 places, 162 transitions, 668 flow. Second operand 9 states and 1287 transitions. [2022-09-20 20:28:46,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 178 transitions, 937 flow [2022-09-20 20:28:46,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 178 transitions, 914 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-09-20 20:28:46,459 INFO L231 Difference]: Finished difference. Result has 196 places, 0 transitions, 0 flow [2022-09-20 20:28:46,459 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=188, 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=196, PETRI_TRANSITIONS=0} [2022-09-20 20:28:46,460 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 36 predicate places. [2022-09-20 20:28:46,460 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 0 transitions, 0 flow [2022-09-20 20:28:46,460 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) [2022-09-20 20:28:46,476 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-09-20 20:28:46,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-09-20 20:28:46,477 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-09-20 20:28:46,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-09-20 20:28:46,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-09-20 20:28:46,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-09-20 20:28:46,478 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-09-20 20:28:46,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-09-20 20:28:46,478 INFO L444 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:28:46,483 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 20:28:46,483 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 20:28:46,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 08:28:46 BasicIcfg [2022-09-20 20:28:46,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 20:28:46,487 INFO L158 Benchmark]: Toolchain (without parser) took 18084.48ms. Allocated memory was 197.1MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 164.7MB in the beginning and 730.1MB in the end (delta: -565.4MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2022-09-20 20:28:46,487 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 197.1MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 20:28:46,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.23ms. Allocated memory is still 197.1MB. Free memory was 164.5MB in the beginning and 160.0MB in the end (delta: 4.5MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-09-20 20:28:46,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.16ms. Allocated memory is still 197.1MB. Free memory was 159.8MB in the beginning and 157.1MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-20 20:28:46,487 INFO L158 Benchmark]: Boogie Preprocessor took 38.59ms. Allocated memory is still 197.1MB. Free memory was 157.1MB in the beginning and 155.2MB in the end (delta: 1.9MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 20:28:46,488 INFO L158 Benchmark]: RCFGBuilder took 793.56ms. Allocated memory was 197.1MB in the beginning and 238.0MB in the end (delta: 40.9MB). Free memory was 155.2MB in the beginning and 208.6MB in the end (delta: -53.3MB). Peak memory consumption was 38.4MB. Max. memory is 8.0GB. [2022-09-20 20:28:46,488 INFO L158 Benchmark]: TraceAbstraction took 16784.40ms. Allocated memory was 238.0MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 208.1MB in the beginning and 730.1MB in the end (delta: -522.1MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. [2022-09-20 20:28:46,492 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 197.1MB. Free memory is still 154.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 403.23ms. Allocated memory is still 197.1MB. Free memory was 164.5MB in the beginning and 160.0MB in the end (delta: 4.5MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 58.16ms. Allocated memory is still 197.1MB. Free memory was 159.8MB in the beginning and 157.1MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.59ms. Allocated memory is still 197.1MB. Free memory was 157.1MB in the beginning and 155.2MB in the end (delta: 1.9MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 793.56ms. Allocated memory was 197.1MB in the beginning and 238.0MB in the end (delta: 40.9MB). Free memory was 155.2MB in the beginning and 208.6MB in the end (delta: -53.3MB). Peak memory consumption was 38.4MB. Max. memory is 8.0GB. * TraceAbstraction took 16784.40ms. Allocated memory was 238.0MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 208.1MB in the beginning and 730.1MB in the end (delta: -522.1MB). Peak memory consumption was 1.0GB. Max. memory is 8.0GB. * 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: 16.6s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 14.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2081 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2081 mSDsluCounter, 1340 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2485 mSDsCounter, 492 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6783 IncrementalHoareTripleChecker+Invalid, 7275 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 492 mSolverCounterUnsat, 436 mSDtfsCounter, 6783 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 339 GetRequests, 63 SyntacticMatches, 3 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2369occurred in iteration=17, InterpolantAutomatonStates: 270, 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, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 2438 NumberOfCodeBlocks, 2438 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 2409 ConstructedInterpolants, 0 QuantifiedInterpolants, 12142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 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! [2022-09-20 20:28:46,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...