/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 --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-atomic/qrcu-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:29:49,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:29:49,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:29:49,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:29:49,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:29:49,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:29:49,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:29:49,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:29:49,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:29:49,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:29:49,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:29:49,673 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:29:49,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:29:49,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:29:49,675 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:29:49,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:29:49,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:29:49,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:29:49,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:29:49,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:29:49,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:29:49,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:29:49,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:29:49,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:29:49,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:29:49,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:29:49,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:29:49,695 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:29:49,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:29:49,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:29:49,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:29:49,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:29:49,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:29:49,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:29:49,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:29:49,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:29:49,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:29:49,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:29:49,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:29:49,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:29:49,702 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:29:49,708 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 [2022-09-16 11:29:49,724 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:29:49,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:29:49,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:29:49,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:29:49,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:29:49,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:29:49,727 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:29:49,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:29:49,727 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:29:49,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:29:49,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:29:49,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:29:49,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:29:49,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:29:49,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:29:49,728 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:29:49,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:29:49,728 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:29:49,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:29:49,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:29:49,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:29:49,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:29:49,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:29:49,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:29:49,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:29:49,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:29:49,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:29:49,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:29:49,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:29:49,730 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:29:49,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:29:49,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:29:49,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:29:49,944 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:29:49,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:29:49,947 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:29:49,947 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:29:49,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/qrcu-2.i [2022-09-16 11:29:50,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea744b8b0/121275397d2b4bbca54223b1a32c0df1/FLAGc83b29dd1 [2022-09-16 11:29:50,504 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:29:50,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-2.i [2022-09-16 11:29:50,531 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea744b8b0/121275397d2b4bbca54223b1a32c0df1/FLAGc83b29dd1 [2022-09-16 11:29:50,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea744b8b0/121275397d2b4bbca54223b1a32c0df1 [2022-09-16 11:29:50,868 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:29:50,870 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:29:50,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:29:50,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:29:50,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:29:50,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:29:50" (1/1) ... [2022-09-16 11:29:50,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@569b64a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:50, skipping insertion in model container [2022-09-16 11:29:50,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:29:50" (1/1) ... [2022-09-16 11:29:50,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:29:50,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:29:51,203 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-2.i[30690,30703] [2022-09-16 11:29:51,205 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-2.i[30912,30925] [2022-09-16 11:29:51,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:29:51,249 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:29:51,295 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-2.i[30690,30703] [2022-09-16 11:29:51,296 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-2.i[30912,30925] [2022-09-16 11:29:51,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:29:51,348 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:29:51,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51 WrapperNode [2022-09-16 11:29:51,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:29:51,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:29:51,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:29:51,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:29:51,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (1/1) ... [2022-09-16 11:29:51,387 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (1/1) ... [2022-09-16 11:29:51,428 INFO L138 Inliner]: procedures = 177, calls = 44, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 294 [2022-09-16 11:29:51,429 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:29:51,430 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:29:51,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:29:51,430 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:29:51,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (1/1) ... [2022-09-16 11:29:51,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (1/1) ... [2022-09-16 11:29:51,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (1/1) ... [2022-09-16 11:29:51,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (1/1) ... [2022-09-16 11:29:51,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (1/1) ... [2022-09-16 11:29:51,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (1/1) ... [2022-09-16 11:29:51,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (1/1) ... [2022-09-16 11:29:51,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:29:51,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:29:51,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:29:51,476 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:29:51,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (1/1) ... [2022-09-16 11:29:51,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:29:51,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:29:51,511 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) [2022-09-16 11:29:51,516 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 [2022-09-16 11:29:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-09-16 11:29:51,544 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-09-16 11:29:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-09-16 11:29:51,544 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-09-16 11:29:51,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:29:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:29:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-09-16 11:29:51,545 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-09-16 11:29:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-09-16 11:29:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:29:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:29:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:29:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:29:51,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:29:51,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:29:51,547 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:29:51,655 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:29:51,656 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:29:52,108 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:29:52,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:29:52,311 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:29:52,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:29:52 BoogieIcfgContainer [2022-09-16 11:29:52,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:29:52,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:29:52,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:29:52,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:29:52,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:29:50" (1/3) ... [2022-09-16 11:29:52,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbe6a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:29:52, skipping insertion in model container [2022-09-16 11:29:52,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:29:51" (2/3) ... [2022-09-16 11:29:52,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cbe6a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:29:52, skipping insertion in model container [2022-09-16 11:29:52,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:29:52" (3/3) ... [2022-09-16 11:29:52,326 INFO L112 eAbstractionObserver]: Analyzing ICFG qrcu-2.i [2022-09-16 11:29:52,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:29:52,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-09-16 11:29:52,371 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:29:52,481 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:29:52,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 225 transitions, 474 flow [2022-09-16 11:29:52,618 INFO L130 PetriNetUnfolder]: 18/222 cut-off events. [2022-09-16 11:29:52,618 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:29:52,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 222 events. 18/222 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 570 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 176. Up to 4 conditions per place. [2022-09-16 11:29:52,630 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 225 transitions, 474 flow [2022-09-16 11:29:52,644 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 210 transitions, 435 flow [2022-09-16 11:29:52,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:29:52,663 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;@21fe0061, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:29:52,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-09-16 11:29:52,671 INFO L130 PetriNetUnfolder]: 1/46 cut-off events. [2022-09-16 11:29:52,671 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:29:52,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:52,672 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] [2022-09-16 11:29:52,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:29:52,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash -979902675, now seen corresponding path program 1 times [2022-09-16 11:29:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:52,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416199518] [2022-09-16 11:29:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:52,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:52,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:52,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:52,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416199518] [2022-09-16 11:29:52,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416199518] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:52,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:52,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:29:52,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510888109] [2022-09-16 11:29:52,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:52,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-16 11:29:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:52,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-16 11:29:52,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-16 11:29:52,961 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 225 [2022-09-16 11:29:52,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 210 transitions, 435 flow. Second operand has 2 states, 2 states have (on average 189.5) internal successors, (379), 2 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:52,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:52,965 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 225 [2022-09-16 11:29:52,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:54,063 INFO L130 PetriNetUnfolder]: 1463/9133 cut-off events. [2022-09-16 11:29:54,063 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2022-09-16 11:29:54,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10619 conditions, 9133 events. 1463/9133 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 114762 event pairs, 710 based on Foata normal form. 257/6817 useless extension candidates. Maximal degree in co-relation 10247. Up to 1260 conditions per place. [2022-09-16 11:29:54,157 INFO L137 encePairwiseOnDemand]: 215/225 looper letters, 26 selfloop transitions, 0 changer transitions 0/200 dead transitions. [2022-09-16 11:29:54,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 200 transitions, 467 flow [2022-09-16 11:29:54,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-16 11:29:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-16 11:29:54,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 412 transitions. [2022-09-16 11:29:54,178 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9155555555555556 [2022-09-16 11:29:54,180 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 412 transitions. [2022-09-16 11:29:54,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 412 transitions. [2022-09-16 11:29:54,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:54,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 412 transitions. [2022-09-16 11:29:54,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 206.0) internal successors, (412), 2 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:54,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:54,198 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:54,199 INFO L175 Difference]: Start difference. First operand has 202 places, 210 transitions, 435 flow. Second operand 2 states and 412 transitions. [2022-09-16 11:29:54,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 200 transitions, 467 flow [2022-09-16 11:29:54,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 200 transitions, 458 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:29:54,214 INFO L231 Difference]: Finished difference. Result has 194 places, 200 transitions, 406 flow [2022-09-16 11:29:54,216 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=406, PETRI_PLACES=194, PETRI_TRANSITIONS=200} [2022-09-16 11:29:54,223 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, -8 predicate places. [2022-09-16 11:29:54,223 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 200 transitions, 406 flow [2022-09-16 11:29:54,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 189.5) internal successors, (379), 2 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:54,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:54,224 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] [2022-09-16 11:29:54,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:29:54,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting qrcu_reader1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:29:54,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:54,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1059017325, now seen corresponding path program 1 times [2022-09-16 11:29:54,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:54,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910857534] [2022-09-16 11:29:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:54,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:54,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:54,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910857534] [2022-09-16 11:29:54,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910857534] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:54,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:54,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:29:54,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82005887] [2022-09-16 11:29:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:54,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:29:54,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:29:54,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:29:54,399 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 225 [2022-09-16 11:29:54,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 200 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:54,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:54,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 225 [2022-09-16 11:29:54,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:55,951 INFO L130 PetriNetUnfolder]: 5364/12206 cut-off events. [2022-09-16 11:29:55,951 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-09-16 11:29:55,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19729 conditions, 12206 events. 5364/12206 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 124614 event pairs, 2066 based on Foata normal form. 0/7714 useless extension candidates. Maximal degree in co-relation 19726. Up to 6134 conditions per place. [2022-09-16 11:29:56,068 INFO L137 encePairwiseOnDemand]: 212/225 looper letters, 71 selfloop transitions, 7 changer transitions 0/233 dead transitions. [2022-09-16 11:29:56,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 233 transitions, 631 flow [2022-09-16 11:29:56,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:29:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:29:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-09-16 11:29:56,071 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8755555555555555 [2022-09-16 11:29:56,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-09-16 11:29:56,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-09-16 11:29:56,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:56,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-09-16 11:29:56,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:56,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:56,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:56,077 INFO L175 Difference]: Start difference. First operand has 194 places, 200 transitions, 406 flow. Second operand 3 states and 591 transitions. [2022-09-16 11:29:56,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 233 transitions, 631 flow [2022-09-16 11:29:56,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 233 transitions, 631 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-16 11:29:56,083 INFO L231 Difference]: Finished difference. Result has 197 places, 206 transitions, 463 flow [2022-09-16 11:29:56,084 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=463, PETRI_PLACES=197, PETRI_TRANSITIONS=206} [2022-09-16 11:29:56,085 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, -5 predicate places. [2022-09-16 11:29:56,085 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 206 transitions, 463 flow [2022-09-16 11:29:56,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:56,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:56,086 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] [2022-09-16 11:29:56,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:29:56,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting qrcu_reader1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:29:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:56,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1675183012, now seen corresponding path program 1 times [2022-09-16 11:29:56,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:56,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878599754] [2022-09-16 11:29:56,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:56,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:56,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:56,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878599754] [2022-09-16 11:29:56,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878599754] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:56,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:56,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:29:56,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188670864] [2022-09-16 11:29:56,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:56,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:29:56,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:56,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:29:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:29:56,166 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 225 [2022-09-16 11:29:56,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 206 transitions, 463 flow. Second operand has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:56,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:56,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 225 [2022-09-16 11:29:56,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:57,117 INFO L130 PetriNetUnfolder]: 2877/7433 cut-off events. [2022-09-16 11:29:57,118 INFO L131 PetriNetUnfolder]: For 797/832 co-relation queries the response was YES. [2022-09-16 11:29:57,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13398 conditions, 7433 events. 2877/7433 cut-off events. For 797/832 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 73403 event pairs, 857 based on Foata normal form. 309/5352 useless extension candidates. Maximal degree in co-relation 13393. Up to 3000 conditions per place. [2022-09-16 11:29:57,183 INFO L137 encePairwiseOnDemand]: 212/225 looper letters, 77 selfloop transitions, 5 changer transitions 0/239 dead transitions. [2022-09-16 11:29:57,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 239 transitions, 722 flow [2022-09-16 11:29:57,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:29:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:29:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-09-16 11:29:57,185 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8755555555555555 [2022-09-16 11:29:57,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-09-16 11:29:57,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-09-16 11:29:57,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:57,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-09-16 11:29:57,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:57,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:57,192 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:57,192 INFO L175 Difference]: Start difference. First operand has 197 places, 206 transitions, 463 flow. Second operand 3 states and 591 transitions. [2022-09-16 11:29:57,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 239 transitions, 722 flow [2022-09-16 11:29:57,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 239 transitions, 713 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:29:57,197 INFO L231 Difference]: Finished difference. Result has 199 places, 210 transitions, 507 flow [2022-09-16 11:29:57,198 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=507, PETRI_PLACES=199, PETRI_TRANSITIONS=210} [2022-09-16 11:29:57,200 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, -3 predicate places. [2022-09-16 11:29:57,200 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 210 transitions, 507 flow [2022-09-16 11:29:57,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.0) internal successors, (510), 3 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:57,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:57,201 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] [2022-09-16 11:29:57,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:29:57,201 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:29:57,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:57,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1645581682, now seen corresponding path program 1 times [2022-09-16 11:29:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:57,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975155485] [2022-09-16 11:29:57,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:57,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:57,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:57,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975155485] [2022-09-16 11:29:57,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975155485] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:57,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:57,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:57,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393613541] [2022-09-16 11:29:57,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:57,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:57,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:57,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:57,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:57,301 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 225 [2022-09-16 11:29:57,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 210 transitions, 507 flow. Second operand has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:57,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:57,302 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 225 [2022-09-16 11:29:57,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:58,401 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([993] L769-1-->L777-2: Formula: (and (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|)) InVars {qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|} OutVars{qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1][247], [113#qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 220#true, 42#L758-3true, Black: 225#(= ~ctr1~0 1), 233#true, Black: 230#(= ~ctr2~0 0), qrcu_updaterThread1of1ForFork2InUse, 80#L777-2true, 64#L786-4true, 228#true]) [2022-09-16 11:29:58,402 INFO L383 tUnfolder$Statistics]: this new event has 103 ancestors and is cut-off event [2022-09-16 11:29:58,402 INFO L386 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-09-16 11:29:58,402 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-09-16 11:29:58,402 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-09-16 11:29:58,404 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([993] L769-1-->L777-2: Formula: (and (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|)) InVars {qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|} OutVars{qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1][247], [220#true, 42#L758-3true, Black: 225#(= ~ctr1~0 1), 233#true, 63#qrcu_reader1Err7ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 230#(= ~ctr2~0 0), 80#L777-2true, qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, 228#true]) [2022-09-16 11:29:58,404 INFO L383 tUnfolder$Statistics]: this new event has 103 ancestors and is cut-off event [2022-09-16 11:29:58,404 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-09-16 11:29:58,404 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-09-16 11:29:58,404 INFO L386 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-09-16 11:29:58,405 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([993] L769-1-->L777-2: Formula: (and (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|)) InVars {qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|} OutVars{qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1][247], [220#true, 42#L758-3true, Black: 225#(= ~ctr1~0 1), 32#qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 233#true, Black: 230#(= ~ctr2~0 0), qrcu_updaterThread1of1ForFork2InUse, 80#L777-2true, 64#L786-4true, 228#true]) [2022-09-16 11:29:58,405 INFO L383 tUnfolder$Statistics]: this new event has 103 ancestors and is cut-off event [2022-09-16 11:29:58,405 INFO L386 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-09-16 11:29:58,405 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-09-16 11:29:58,405 INFO L386 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-09-16 11:29:58,459 INFO L130 PetriNetUnfolder]: 3473/7785 cut-off events. [2022-09-16 11:29:58,459 INFO L131 PetriNetUnfolder]: For 2474/2528 co-relation queries the response was YES. [2022-09-16 11:29:58,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16927 conditions, 7785 events. 3473/7785 cut-off events. For 2474/2528 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 74076 event pairs, 665 based on Foata normal form. 19/6097 useless extension candidates. Maximal degree in co-relation 16921. Up to 2603 conditions per place. [2022-09-16 11:29:58,532 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 106 selfloop transitions, 14 changer transitions 0/277 dead transitions. [2022-09-16 11:29:58,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 277 transitions, 950 flow [2022-09-16 11:29:58,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:29:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:29:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 796 transitions. [2022-09-16 11:29:58,535 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8844444444444445 [2022-09-16 11:29:58,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 796 transitions. [2022-09-16 11:29:58,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 796 transitions. [2022-09-16 11:29:58,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:58,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 796 transitions. [2022-09-16 11:29:58,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:58,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 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) [2022-09-16 11:29:58,541 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 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) [2022-09-16 11:29:58,541 INFO L175 Difference]: Start difference. First operand has 199 places, 210 transitions, 507 flow. Second operand 4 states and 796 transitions. [2022-09-16 11:29:58,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 277 transitions, 950 flow [2022-09-16 11:29:58,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 277 transitions, 943 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:29:58,547 INFO L231 Difference]: Finished difference. Result has 203 places, 217 transitions, 599 flow [2022-09-16 11:29:58,547 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=599, PETRI_PLACES=203, PETRI_TRANSITIONS=217} [2022-09-16 11:29:58,548 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 1 predicate places. [2022-09-16 11:29:58,548 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 217 transitions, 599 flow [2022-09-16 11:29:58,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:58,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:58,549 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] [2022-09-16 11:29:58,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:29:58,549 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:29:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1645581683, now seen corresponding path program 1 times [2022-09-16 11:29:58,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:58,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126253937] [2022-09-16 11:29:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:58,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:58,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:58,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126253937] [2022-09-16 11:29:58,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126253937] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:58,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:58,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:29:58,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566378980] [2022-09-16 11:29:58,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:58,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:29:58,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:58,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:29:58,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:29:58,601 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 225 [2022-09-16 11:29:58,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 217 transitions, 599 flow. Second operand has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:58,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:58,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 225 [2022-09-16 11:29:58,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:29:59,728 INFO L130 PetriNetUnfolder]: 3699/8693 cut-off events. [2022-09-16 11:29:59,729 INFO L131 PetriNetUnfolder]: For 7936/8069 co-relation queries the response was YES. [2022-09-16 11:29:59,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19765 conditions, 8693 events. 3699/8693 cut-off events. For 7936/8069 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 88142 event pairs, 1340 based on Foata normal form. 448/7219 useless extension candidates. Maximal degree in co-relation 19758. Up to 3143 conditions per place. [2022-09-16 11:29:59,829 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 109 selfloop transitions, 23 changer transitions 0/289 dead transitions. [2022-09-16 11:29:59,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 289 transitions, 1118 flow [2022-09-16 11:29:59,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:29:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:29:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 796 transitions. [2022-09-16 11:29:59,832 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8844444444444445 [2022-09-16 11:29:59,832 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 796 transitions. [2022-09-16 11:29:59,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 796 transitions. [2022-09-16 11:29:59,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:29:59,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 796 transitions. [2022-09-16 11:29:59,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:59,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 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) [2022-09-16 11:29:59,837 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 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) [2022-09-16 11:29:59,837 INFO L175 Difference]: Start difference. First operand has 203 places, 217 transitions, 599 flow. Second operand 4 states and 796 transitions. [2022-09-16 11:29:59,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 289 transitions, 1118 flow [2022-09-16 11:29:59,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 289 transitions, 1111 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:29:59,845 INFO L231 Difference]: Finished difference. Result has 207 places, 233 transitions, 823 flow [2022-09-16 11:29:59,846 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=823, PETRI_PLACES=207, PETRI_TRANSITIONS=233} [2022-09-16 11:29:59,846 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 5 predicate places. [2022-09-16 11:29:59,847 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 233 transitions, 823 flow [2022-09-16 11:29:59,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:59,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:29:59,847 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] [2022-09-16 11:29:59,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:29:59,848 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:29:59,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:29:59,848 INFO L85 PathProgramCache]: Analyzing trace with hash -563450683, now seen corresponding path program 1 times [2022-09-16 11:29:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:29:59,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765217130] [2022-09-16 11:29:59,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:29:59,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:29:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:29:59,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:29:59,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:29:59,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765217130] [2022-09-16 11:29:59,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765217130] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:29:59,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:29:59,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:29:59,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356928684] [2022-09-16 11:29:59,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:29:59,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:29:59,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:29:59,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:29:59,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:29:59,909 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 225 [2022-09-16 11:29:59,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 233 transitions, 823 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:29:59,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:29:59,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 225 [2022-09-16 11:29:59,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:00,878 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([993] L769-1-->L777-2: Formula: (and (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|)) InVars {qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|} OutVars{qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1][211], [220#true, Black: 225#(= ~ctr1~0 1), 240#true, 80#L777-2true, Black: 230#(= ~ctr2~0 0), 36#L739-3true, Black: 233#true, 236#(<= ~ctr1~0 2), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 250#(<= ~ctr1~0 2), 64#L786-4true, 178#qrcu_reader2Err5ASSERT_VIOLATIONINTEGER_OVERFLOWtrue]) [2022-09-16 11:30:00,879 INFO L383 tUnfolder$Statistics]: this new event has 103 ancestors and is cut-off event [2022-09-16 11:30:00,879 INFO L386 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-09-16 11:30:00,879 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-09-16 11:30:00,879 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-09-16 11:30:00,884 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([993] L769-1-->L777-2: Formula: (and (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|)) InVars {qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|} OutVars{qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1][211], [220#true, 42#L758-3true, Black: 225#(= ~ctr1~0 1), 240#true, 80#L777-2true, Black: 230#(= ~ctr2~0 0), Black: 233#true, 65#qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 236#(<= ~ctr1~0 2), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 250#(<= ~ctr1~0 2), 64#L786-4true]) [2022-09-16 11:30:00,885 INFO L383 tUnfolder$Statistics]: this new event has 103 ancestors and is cut-off event [2022-09-16 11:30:00,885 INFO L386 tUnfolder$Statistics]: existing Event has 103 ancestors and is cut-off event [2022-09-16 11:30:00,885 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-09-16 11:30:00,885 INFO L386 tUnfolder$Statistics]: existing Event has 86 ancestors and is cut-off event [2022-09-16 11:30:01,028 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([993] L769-1-->L777-2: Formula: (and (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|)) InVars {qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|} OutVars{qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1][211], [220#true, Black: 225#(= ~ctr1~0 1), 240#true, 162#L787-2true, 236#(<= ~ctr1~0 2), Black: 243#(<= 2 ~ctr1~0), 80#L777-2true, 250#(<= ~ctr1~0 2), qrcu_updaterThread1of1ForFork2InUse, Black: 230#(= ~ctr2~0 0), Black: 233#true, 178#qrcu_reader2Err5ASSERT_VIOLATIONINTEGER_OVERFLOWtrue]) [2022-09-16 11:30:01,028 INFO L383 tUnfolder$Statistics]: this new event has 109 ancestors and is cut-off event [2022-09-16 11:30:01,028 INFO L386 tUnfolder$Statistics]: existing Event has 92 ancestors and is cut-off event [2022-09-16 11:30:01,028 INFO L386 tUnfolder$Statistics]: existing Event has 92 ancestors and is cut-off event [2022-09-16 11:30:01,028 INFO L386 tUnfolder$Statistics]: existing Event has 109 ancestors and is cut-off event [2022-09-16 11:30:01,056 INFO L130 PetriNetUnfolder]: 3734/8305 cut-off events. [2022-09-16 11:30:01,057 INFO L131 PetriNetUnfolder]: For 12442/12828 co-relation queries the response was YES. [2022-09-16 11:30:01,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21167 conditions, 8305 events. 3734/8305 cut-off events. For 12442/12828 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 79839 event pairs, 1067 based on Foata normal form. 252/6834 useless extension candidates. Maximal degree in co-relation 21158. Up to 2174 conditions per place. [2022-09-16 11:30:01,150 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 137 selfloop transitions, 29 changer transitions 0/323 dead transitions. [2022-09-16 11:30:01,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 323 transitions, 1542 flow [2022-09-16 11:30:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:30:01,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:30:01,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 985 transitions. [2022-09-16 11:30:01,153 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8755555555555555 [2022-09-16 11:30:01,153 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 985 transitions. [2022-09-16 11:30:01,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 985 transitions. [2022-09-16 11:30:01,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:01,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 985 transitions. [2022-09-16 11:30:01,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:01,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:01,159 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:01,159 INFO L175 Difference]: Start difference. First operand has 207 places, 233 transitions, 823 flow. Second operand 5 states and 985 transitions. [2022-09-16 11:30:01,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 323 transitions, 1542 flow [2022-09-16 11:30:01,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 323 transitions, 1535 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:30:01,168 INFO L231 Difference]: Finished difference. Result has 211 places, 240 transitions, 977 flow [2022-09-16 11:30:01,169 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=977, PETRI_PLACES=211, PETRI_TRANSITIONS=240} [2022-09-16 11:30:01,169 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 9 predicate places. [2022-09-16 11:30:01,170 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 240 transitions, 977 flow [2022-09-16 11:30:01,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:01,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:01,170 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] [2022-09-16 11:30:01,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:30:01,171 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1809695303, now seen corresponding path program 1 times [2022-09-16 11:30:01,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:01,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990891866] [2022-09-16 11:30:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:01,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:01,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:01,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990891866] [2022-09-16 11:30:01,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990891866] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:01,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:01,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:30:01,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659522891] [2022-09-16 11:30:01,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:01,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:30:01,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:01,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:30:01,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:30:01,255 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:01,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 240 transitions, 977 flow. Second operand has 5 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:01,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:01,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:01,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:02,487 INFO L130 PetriNetUnfolder]: 5302/11097 cut-off events. [2022-09-16 11:30:02,487 INFO L131 PetriNetUnfolder]: For 23645/23645 co-relation queries the response was YES. [2022-09-16 11:30:02,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31931 conditions, 11097 events. 5302/11097 cut-off events. For 23645/23645 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 108800 event pairs, 2631 based on Foata normal form. 0/8695 useless extension candidates. Maximal degree in co-relation 31920. Up to 8001 conditions per place. [2022-09-16 11:30:02,602 INFO L137 encePairwiseOnDemand]: 207/225 looper letters, 157 selfloop transitions, 20 changer transitions 0/308 dead transitions. [2022-09-16 11:30:02,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 308 transitions, 1558 flow [2022-09-16 11:30:02,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:30:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:30:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1025 transitions. [2022-09-16 11:30:02,605 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7592592592592593 [2022-09-16 11:30:02,605 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1025 transitions. [2022-09-16 11:30:02,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1025 transitions. [2022-09-16 11:30:02,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:02,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1025 transitions. [2022-09-16 11:30:02,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.83333333333334) internal successors, (1025), 6 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:02,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:02,610 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:02,611 INFO L175 Difference]: Start difference. First operand has 211 places, 240 transitions, 977 flow. Second operand 6 states and 1025 transitions. [2022-09-16 11:30:02,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 308 transitions, 1558 flow [2022-09-16 11:30:02,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 308 transitions, 1488 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-09-16 11:30:02,632 INFO L231 Difference]: Finished difference. Result has 216 places, 252 transitions, 1084 flow [2022-09-16 11:30:02,632 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1084, PETRI_PLACES=216, PETRI_TRANSITIONS=252} [2022-09-16 11:30:02,633 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 14 predicate places. [2022-09-16 11:30:02,633 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 252 transitions, 1084 flow [2022-09-16 11:30:02,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:02,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:02,634 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] [2022-09-16 11:30:02,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:30:02,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:02,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:02,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1809726088, now seen corresponding path program 1 times [2022-09-16 11:30:02,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:02,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170592292] [2022-09-16 11:30:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:02,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:02,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:02,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170592292] [2022-09-16 11:30:02,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170592292] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:02,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:02,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:30:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795410822] [2022-09-16 11:30:02,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:02,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:30:02,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:02,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:30:02,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:30:02,722 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:02,722 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 252 transitions, 1084 flow. Second operand has 5 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:02,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:02,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:02,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:03,990 INFO L130 PetriNetUnfolder]: 5330/10852 cut-off events. [2022-09-16 11:30:03,990 INFO L131 PetriNetUnfolder]: For 22997/22997 co-relation queries the response was YES. [2022-09-16 11:30:04,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32146 conditions, 10852 events. 5330/10852 cut-off events. For 22997/22997 co-relation queries the response was YES. Maximal size of possible extension queue 878. Compared 105978 event pairs, 3112 based on Foata normal form. 0/8663 useless extension candidates. Maximal degree in co-relation 32132. Up to 8107 conditions per place. [2022-09-16 11:30:04,103 INFO L137 encePairwiseOnDemand]: 208/225 looper letters, 139 selfloop transitions, 20 changer transitions 0/290 dead transitions. [2022-09-16 11:30:04,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 290 transitions, 1531 flow [2022-09-16 11:30:04,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:30:04,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:30:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 846 transitions. [2022-09-16 11:30:04,108 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.752 [2022-09-16 11:30:04,108 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 846 transitions. [2022-09-16 11:30:04,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 846 transitions. [2022-09-16 11:30:04,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:04,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 846 transitions. [2022-09-16 11:30:04,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 169.2) internal successors, (846), 5 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:04,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:04,114 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:04,114 INFO L175 Difference]: Start difference. First operand has 216 places, 252 transitions, 1084 flow. Second operand 5 states and 846 transitions. [2022-09-16 11:30:04,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 290 transitions, 1531 flow [2022-09-16 11:30:04,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 290 transitions, 1503 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:30:04,150 INFO L231 Difference]: Finished difference. Result has 220 places, 258 transitions, 1165 flow [2022-09-16 11:30:04,151 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1165, PETRI_PLACES=220, PETRI_TRANSITIONS=258} [2022-09-16 11:30:04,154 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 18 predicate places. [2022-09-16 11:30:04,154 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 258 transitions, 1165 flow [2022-09-16 11:30:04,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:04,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:04,155 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] [2022-09-16 11:30:04,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:30:04,155 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting qrcu_reader1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash -985448395, now seen corresponding path program 1 times [2022-09-16 11:30:04,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:04,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170013164] [2022-09-16 11:30:04,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:04,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:04,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:04,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:04,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170013164] [2022-09-16 11:30:04,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170013164] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:04,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:04,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:30:04,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416532472] [2022-09-16 11:30:04,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:04,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:30:04,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:04,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:30:04,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:30:04,272 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 225 [2022-09-16 11:30:04,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 258 transitions, 1165 flow. Second operand has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:04,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:04,274 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 225 [2022-09-16 11:30:04,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:05,698 INFO L130 PetriNetUnfolder]: 5441/12393 cut-off events. [2022-09-16 11:30:05,699 INFO L131 PetriNetUnfolder]: For 20937/21269 co-relation queries the response was YES. [2022-09-16 11:30:05,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32253 conditions, 12393 events. 5441/12393 cut-off events. For 20937/21269 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 119155 event pairs, 1155 based on Foata normal form. 123/10620 useless extension candidates. Maximal degree in co-relation 32237. Up to 4577 conditions per place. [2022-09-16 11:30:05,826 INFO L137 encePairwiseOnDemand]: 214/225 looper letters, 167 selfloop transitions, 15 changer transitions 0/326 dead transitions. [2022-09-16 11:30:05,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 326 transitions, 1946 flow [2022-09-16 11:30:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:30:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:30:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 925 transitions. [2022-09-16 11:30:05,829 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8222222222222222 [2022-09-16 11:30:05,829 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 925 transitions. [2022-09-16 11:30:05,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 925 transitions. [2022-09-16 11:30:05,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:05,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 925 transitions. [2022-09-16 11:30:05,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.0) internal successors, (925), 5 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:05,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:05,834 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:05,834 INFO L175 Difference]: Start difference. First operand has 220 places, 258 transitions, 1165 flow. Second operand 5 states and 925 transitions. [2022-09-16 11:30:05,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 326 transitions, 1946 flow [2022-09-16 11:30:05,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 326 transitions, 1914 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:30:05,875 INFO L231 Difference]: Finished difference. Result has 209 places, 243 transitions, 1162 flow [2022-09-16 11:30:05,875 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1162, PETRI_PLACES=209, PETRI_TRANSITIONS=243} [2022-09-16 11:30:05,876 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 7 predicate places. [2022-09-16 11:30:05,876 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 243 transitions, 1162 flow [2022-09-16 11:30:05,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:05,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:05,877 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] [2022-09-16 11:30:05,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:30:05,877 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting qrcu_reader2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash 182963229, now seen corresponding path program 1 times [2022-09-16 11:30:05,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:05,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266813692] [2022-09-16 11:30:05,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:05,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:05,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:05,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266813692] [2022-09-16 11:30:05,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266813692] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:05,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:05,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:30:05,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484787554] [2022-09-16 11:30:05,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:05,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:30:05,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:05,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:30:05,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:30:05,953 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 225 [2022-09-16 11:30:05,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 243 transitions, 1162 flow. Second operand has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:05,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:05,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 225 [2022-09-16 11:30:05,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:06,442 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1051] L774-2-->L774-2: Formula: (< 0 v_~ctr2~0_22) InVars {~ctr2~0=v_~ctr2~0_22} OutVars{~ctr2~0=v_~ctr2~0_22} AuxVars[] AssignedVars[][231], [72#L744-3true, 220#true, Black: 225#(= ~ctr1~0 1), 247#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), 32#qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 230#(= ~ctr2~0 0), 286#true, 187#L774-2true, 275#true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 251#(<= ~ctr1~0 3), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0))]) [2022-09-16 11:30:06,443 INFO L383 tUnfolder$Statistics]: this new event has 99 ancestors and is cut-off event [2022-09-16 11:30:06,443 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-09-16 11:30:06,443 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:06,443 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-09-16 11:30:06,443 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][232], [72#L744-3true, 220#true, 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), 247#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), 32#qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 230#(= ~ctr2~0 0), 275#true, 155#L774-3true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 251#(<= ~ctr1~0 3), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0))]) [2022-09-16 11:30:06,443 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is not cut-off event [2022-09-16 11:30:06,443 INFO L386 tUnfolder$Statistics]: existing Event has 99 ancestors and is not cut-off event [2022-09-16 11:30:06,443 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-09-16 11:30:06,443 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is not cut-off event [2022-09-16 11:30:06,453 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1051] L774-2-->L774-2: Formula: (< 0 v_~ctr2~0_22) InVars {~ctr2~0=v_~ctr2~0_22} OutVars{~ctr2~0=v_~ctr2~0_22} AuxVars[] AssignedVars[][231], [220#true, 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 225#(= ~ctr1~0 1), 247#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 230#(= ~ctr2~0 0), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 286#true, 187#L774-2true, 275#true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 169#L725-3true, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 251#(<= ~ctr1~0 3), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0))]) [2022-09-16 11:30:06,453 INFO L383 tUnfolder$Statistics]: this new event has 99 ancestors and is cut-off event [2022-09-16 11:30:06,453 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-09-16 11:30:06,453 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:06,453 INFO L386 tUnfolder$Statistics]: existing Event has 98 ancestors and is cut-off event [2022-09-16 11:30:06,453 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][232], [220#true, 289#(<= ~ctr2~0 0), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 225#(= ~ctr1~0 1), 247#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 230#(= ~ctr2~0 0), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 275#true, 155#L774-3true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 169#L725-3true, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 251#(<= ~ctr1~0 3), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0))]) [2022-09-16 11:30:06,453 INFO L383 tUnfolder$Statistics]: this new event has 98 ancestors and is not cut-off event [2022-09-16 11:30:06,453 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is not cut-off event [2022-09-16 11:30:06,453 INFO L386 tUnfolder$Statistics]: existing Event has 99 ancestors and is not cut-off event [2022-09-16 11:30:06,454 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-09-16 11:30:06,523 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1051] L774-2-->L774-2: Formula: (< 0 v_~ctr2~0_22) InVars {~ctr2~0=v_~ctr2~0_22} OutVars{~ctr2~0=v_~ctr2~0_22} AuxVars[] AssignedVars[][231], [220#true, Black: 225#(= ~ctr1~0 1), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 247#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 230#(= ~ctr2~0 0), 286#true, 187#L774-2true, 36#L739-3true, 275#true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 251#(<= ~ctr1~0 3), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0))]) [2022-09-16 11:30:06,523 INFO L383 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-09-16 11:30:06,523 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-09-16 11:30:06,524 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:06,524 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:06,524 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][232], [220#true, 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 247#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 230#(= ~ctr2~0 0), 36#L739-3true, 275#true, 155#L774-3true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 251#(<= ~ctr1~0 3)]) [2022-09-16 11:30:06,524 INFO L383 tUnfolder$Statistics]: this new event has 101 ancestors and is not cut-off event [2022-09-16 11:30:06,524 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-09-16 11:30:06,524 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is not cut-off event [2022-09-16 11:30:06,524 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is not cut-off event [2022-09-16 11:30:06,531 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][261], [220#true, 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), 247#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), 32#qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 230#(= ~ctr2~0 0), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 275#true, 155#L774-3true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 140#qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 251#(<= ~ctr1~0 3), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0))]) [2022-09-16 11:30:06,532 INFO L383 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-09-16 11:30:06,532 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-09-16 11:30:06,532 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:06,532 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:06,532 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1051] L774-2-->L774-2: Formula: (< 0 v_~ctr2~0_22) InVars {~ctr2~0=v_~ctr2~0_22} OutVars{~ctr2~0=v_~ctr2~0_22} AuxVars[] AssignedVars[][231], [220#true, 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 225#(= ~ctr1~0 1), 247#true, 240#true, 32#qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 230#(= ~ctr2~0 0), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 286#true, 187#L774-2true, 275#true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 251#(<= ~ctr1~0 3)]) [2022-09-16 11:30:06,532 INFO L383 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-09-16 11:30:06,532 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-09-16 11:30:06,532 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:06,532 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:06,533 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][232], [220#true, 289#(<= ~ctr2~0 0), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 225#(= ~ctr1~0 1), 247#true, 240#true, 32#qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 230#(= ~ctr2~0 0), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 275#true, 155#L774-3true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 251#(<= ~ctr1~0 3)]) [2022-09-16 11:30:06,533 INFO L383 tUnfolder$Statistics]: this new event has 101 ancestors and is not cut-off event [2022-09-16 11:30:06,533 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is not cut-off event [2022-09-16 11:30:06,533 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is not cut-off event [2022-09-16 11:30:06,533 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is not cut-off event [2022-09-16 11:30:06,534 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][261], [220#true, 289#(<= ~ctr2~0 0), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 225#(= ~ctr1~0 1), 247#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 63#qrcu_reader1Err7ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 230#(= ~ctr2~0 0), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 275#true, 155#L774-3true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 251#(<= ~ctr1~0 3)]) [2022-09-16 11:30:06,534 INFO L383 tUnfolder$Statistics]: this new event has 101 ancestors and is not cut-off event [2022-09-16 11:30:06,534 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is not cut-off event [2022-09-16 11:30:06,534 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is not cut-off event [2022-09-16 11:30:06,534 INFO L386 tUnfolder$Statistics]: existing Event has 102 ancestors and is not cut-off event [2022-09-16 11:30:06,541 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][261], [220#true, 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), 247#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 230#(= ~ctr2~0 0), 36#L739-3true, 275#true, 155#L774-3true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 140#qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 251#(<= ~ctr1~0 3), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0))]) [2022-09-16 11:30:06,541 INFO L383 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-09-16 11:30:06,541 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-09-16 11:30:06,541 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:06,541 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:06,658 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1051] L774-2-->L774-2: Formula: (< 0 v_~ctr2~0_22) InVars {~ctr2~0=v_~ctr2~0_22} OutVars{~ctr2~0=v_~ctr2~0_22} AuxVars[] AssignedVars[][231], [220#true, Black: 225#(= ~ctr1~0 1), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 247#true, 240#true, 162#L787-2true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 230#(= ~ctr2~0 0), 286#true, 187#L774-2true, 275#true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 251#(<= ~ctr1~0 3)]) [2022-09-16 11:30:06,658 INFO L383 tUnfolder$Statistics]: this new event has 108 ancestors and is cut-off event [2022-09-16 11:30:06,658 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-09-16 11:30:06,658 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:06,658 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:06,658 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][232], [220#true, 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 247#true, 240#true, 162#L787-2true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 230#(= ~ctr2~0 0), 275#true, 155#L774-3true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 251#(<= ~ctr1~0 3), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0))]) [2022-09-16 11:30:06,658 INFO L383 tUnfolder$Statistics]: this new event has 107 ancestors and is not cut-off event [2022-09-16 11:30:06,658 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is not cut-off event [2022-09-16 11:30:06,658 INFO L386 tUnfolder$Statistics]: existing Event has 108 ancestors and is not cut-off event [2022-09-16 11:30:06,658 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is not cut-off event [2022-09-16 11:30:06,661 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][261], [220#true, 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), 247#true, 240#true, 162#L787-2true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 230#(= ~ctr2~0 0), 275#true, 155#L774-3true, Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 140#qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 251#(<= ~ctr1~0 3), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0))]) [2022-09-16 11:30:06,661 INFO L383 tUnfolder$Statistics]: this new event has 108 ancestors and is cut-off event [2022-09-16 11:30:06,662 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:06,662 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:06,662 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-09-16 11:30:06,684 INFO L130 PetriNetUnfolder]: 2910/6951 cut-off events. [2022-09-16 11:30:06,684 INFO L131 PetriNetUnfolder]: For 17709/18700 co-relation queries the response was YES. [2022-09-16 11:30:06,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20665 conditions, 6951 events. 2910/6951 cut-off events. For 17709/18700 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 63991 event pairs, 737 based on Foata normal form. 206/6261 useless extension candidates. Maximal degree in co-relation 20647. Up to 2663 conditions per place. [2022-09-16 11:30:06,741 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 133 selfloop transitions, 16 changer transitions 0/302 dead transitions. [2022-09-16 11:30:06,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 302 transitions, 1895 flow [2022-09-16 11:30:06,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:30:06,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:30:06,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 766 transitions. [2022-09-16 11:30:06,743 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8511111111111112 [2022-09-16 11:30:06,743 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 766 transitions. [2022-09-16 11:30:06,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 766 transitions. [2022-09-16 11:30:06,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:06,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 766 transitions. [2022-09-16 11:30:06,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.5) internal successors, (766), 4 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:06,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 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) [2022-09-16 11:30:06,746 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 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) [2022-09-16 11:30:06,746 INFO L175 Difference]: Start difference. First operand has 209 places, 243 transitions, 1162 flow. Second operand 4 states and 766 transitions. [2022-09-16 11:30:06,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 302 transitions, 1895 flow [2022-09-16 11:30:06,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 302 transitions, 1879 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:30:06,762 INFO L231 Difference]: Finished difference. Result has 212 places, 246 transitions, 1231 flow [2022-09-16 11:30:06,762 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1231, PETRI_PLACES=212, PETRI_TRANSITIONS=246} [2022-09-16 11:30:06,763 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 10 predicate places. [2022-09-16 11:30:06,763 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 246 transitions, 1231 flow [2022-09-16 11:30:06,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:06,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:06,763 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] [2022-09-16 11:30:06,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:30:06,763 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:06,764 INFO L85 PathProgramCache]: Analyzing trace with hash 385026820, now seen corresponding path program 1 times [2022-09-16 11:30:06,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:06,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461460663] [2022-09-16 11:30:06,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:06,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:06,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:06,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:06,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461460663] [2022-09-16 11:30:06,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461460663] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:06,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:06,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:30:06,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465948699] [2022-09-16 11:30:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:06,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:30:06,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:30:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:30:06,812 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 225 [2022-09-16 11:30:06,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 246 transitions, 1231 flow. Second operand has 5 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:06,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:06,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 225 [2022-09-16 11:30:06,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:07,730 INFO L130 PetriNetUnfolder]: 2842/6764 cut-off events. [2022-09-16 11:30:07,730 INFO L131 PetriNetUnfolder]: For 21193/21302 co-relation queries the response was YES. [2022-09-16 11:30:07,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21642 conditions, 6764 events. 2842/6764 cut-off events. For 21193/21302 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 62648 event pairs, 666 based on Foata normal form. 133/6478 useless extension candidates. Maximal degree in co-relation 21623. Up to 1993 conditions per place. [2022-09-16 11:30:07,794 INFO L137 encePairwiseOnDemand]: 212/225 looper letters, 136 selfloop transitions, 56 changer transitions 1/345 dead transitions. [2022-09-16 11:30:07,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 345 transitions, 2201 flow [2022-09-16 11:30:07,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:30:07,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:30:07,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 991 transitions. [2022-09-16 11:30:07,796 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8808888888888889 [2022-09-16 11:30:07,796 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 991 transitions. [2022-09-16 11:30:07,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 991 transitions. [2022-09-16 11:30:07,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:07,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 991 transitions. [2022-09-16 11:30:07,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:07,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:07,801 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:07,801 INFO L175 Difference]: Start difference. First operand has 212 places, 246 transitions, 1231 flow. Second operand 5 states and 991 transitions. [2022-09-16 11:30:07,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 345 transitions, 2201 flow [2022-09-16 11:30:07,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 345 transitions, 2186 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:30:07,826 INFO L231 Difference]: Finished difference. Result has 216 places, 263 transitions, 1600 flow [2022-09-16 11:30:07,826 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1600, PETRI_PLACES=216, PETRI_TRANSITIONS=263} [2022-09-16 11:30:07,827 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 14 predicate places. [2022-09-16 11:30:07,827 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 263 transitions, 1600 flow [2022-09-16 11:30:07,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:07,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:07,827 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] [2022-09-16 11:30:07,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:30:07,828 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:07,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:07,828 INFO L85 PathProgramCache]: Analyzing trace with hash 419054498, now seen corresponding path program 1 times [2022-09-16 11:30:07,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:07,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232970098] [2022-09-16 11:30:07,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:07,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:07,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:07,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232970098] [2022-09-16 11:30:07,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232970098] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:07,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:07,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:30:07,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663658483] [2022-09-16 11:30:07,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:07,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:30:07,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:07,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:30:07,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:30:07,867 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 225 [2022-09-16 11:30:07,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 263 transitions, 1600 flow. Second operand has 4 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:07,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:07,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 225 [2022-09-16 11:30:07,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:08,141 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([909] L739-->L739-3: Formula: (let ((.cse1 (= |v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#in~myidx#1_9| |v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_~myidx#1_9|)) (.cse2 (= |v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#in~myidx#1_9| |v_qrcu_reader1Thread1of1ForFork0_~myidx~0#1_13|)) (.cse0 (<= |v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_~myidx#1_9| 0))) (or (and (= (+ v_~ctr1~0_Out_6 1) v_~ctr1~0_In_3) (<= v_~ctr1~0_Out_6 2147483647) (= v_~ctr2~0_Out_6 v_~ctr2~0_In_3) .cse0 .cse1 .cse2 (<= 0 (+ v_~ctr1~0_Out_6 2147483648))) (and (<= v_~ctr2~0_Out_6 2147483647) (<= 0 (+ v_~ctr2~0_Out_6 2147483648)) .cse1 (= v_~ctr1~0_Out_6 v_~ctr1~0_In_3) .cse2 (= (+ v_~ctr2~0_Out_6 1) v_~ctr2~0_In_3) (not .cse0)))) InVars {qrcu_reader1Thread1of1ForFork0_~myidx~0#1=|v_qrcu_reader1Thread1of1ForFork0_~myidx~0#1_13|, ~ctr1~0=v_~ctr1~0_In_3, ~ctr2~0=v_~ctr2~0_In_3} OutVars{qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_~myidx#1=|v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_~myidx#1_9|, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post6#1=|v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post6#1_9|, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post5#1=|v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post5#1_9|, qrcu_reader1Thread1of1ForFork0_~myidx~0#1=|v_qrcu_reader1Thread1of1ForFork0_~myidx~0#1_13|, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#in~myidx#1=|v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#in~myidx#1_9|, ~ctr1~0=v_~ctr1~0_Out_6, ~ctr2~0=v_~ctr2~0_Out_6} AuxVars[] AssignedVars[qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_~myidx#1, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post6#1, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post5#1, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#in~myidx#1, ~ctr1~0, ~ctr2~0][96], [220#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), qrcu_updaterThread1of1ForFork2InUse, 250#(<= ~ctr1~0 2), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), Black: 286#true, 193#L746true, Black: 230#(= ~ctr2~0 0), Black: 296#(<= 2 ~ctr1~0), 36#L739-3true, Black: 233#true, 200#L770true, Black: 243#(<= 2 ~ctr1~0), 64#L786-4true, Black: 251#(<= ~ctr1~0 3), 293#true]) [2022-09-16 11:30:08,141 INFO L383 tUnfolder$Statistics]: this new event has 85 ancestors and is cut-off event [2022-09-16 11:30:08,141 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-09-16 11:30:08,141 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-16 11:30:08,141 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-09-16 11:30:08,141 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([909] L739-->L739-3: Formula: (let ((.cse1 (= |v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#in~myidx#1_9| |v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_~myidx#1_9|)) (.cse2 (= |v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#in~myidx#1_9| |v_qrcu_reader1Thread1of1ForFork0_~myidx~0#1_13|)) (.cse0 (<= |v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_~myidx#1_9| 0))) (or (and (= (+ v_~ctr1~0_Out_6 1) v_~ctr1~0_In_3) (<= v_~ctr1~0_Out_6 2147483647) (= v_~ctr2~0_Out_6 v_~ctr2~0_In_3) .cse0 .cse1 .cse2 (<= 0 (+ v_~ctr1~0_Out_6 2147483648))) (and (<= v_~ctr2~0_Out_6 2147483647) (<= 0 (+ v_~ctr2~0_Out_6 2147483648)) .cse1 (= v_~ctr1~0_Out_6 v_~ctr1~0_In_3) .cse2 (= (+ v_~ctr2~0_Out_6 1) v_~ctr2~0_In_3) (not .cse0)))) InVars {qrcu_reader1Thread1of1ForFork0_~myidx~0#1=|v_qrcu_reader1Thread1of1ForFork0_~myidx~0#1_13|, ~ctr1~0=v_~ctr1~0_In_3, ~ctr2~0=v_~ctr2~0_In_3} OutVars{qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_~myidx#1=|v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_~myidx#1_9|, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post6#1=|v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post6#1_9|, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post5#1=|v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post5#1_9|, qrcu_reader1Thread1of1ForFork0_~myidx~0#1=|v_qrcu_reader1Thread1of1ForFork0_~myidx~0#1_13|, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#in~myidx#1=|v_qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#in~myidx#1_9|, ~ctr1~0=v_~ctr1~0_Out_6, ~ctr2~0=v_~ctr2~0_Out_6} AuxVars[] AssignedVars[qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_~myidx#1, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post6#1, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#t~post5#1, qrcu_reader1Thread1of1ForFork0___VERIFIER_atomic_use_done_#in~myidx#1, ~ctr1~0, ~ctr2~0][108], [72#L744-3true, 220#true, 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), Black: 286#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), 251#(<= ~ctr1~0 3), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 230#(= ~ctr2~0 0), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 36#L739-3true, 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 200#L770true, Black: 243#(<= 2 ~ctr1~0), qrcu_updaterThread1of1ForFork2InUse, 64#L786-4true, 296#(<= 2 ~ctr1~0), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0))]) [2022-09-16 11:30:08,142 INFO L383 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([993] L769-1-->L777-2: Formula: (and (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|)) InVars {qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|} OutVars{qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1][148], [220#true, Black: 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), Black: 286#true, 193#L746true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 80#L777-2true, 243#(<= 2 ~ctr1~0), 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 233#true, Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 240#true, 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), qrcu_updaterThread1of1ForFork2InUse, 250#(<= ~ctr1~0 2), 169#L725-3true, 64#L786-4true, 296#(<= 2 ~ctr1~0), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), 230#(= ~ctr2~0 0), Black: 251#(<= ~ctr1~0 3)]) [2022-09-16 11:30:08,142 INFO L383 tUnfolder$Statistics]: this new event has 83 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L386 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L386 tUnfolder$Statistics]: existing Event has 76 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([993] L769-1-->L777-2: Formula: (and (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2| |v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|) (= |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1| |v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|)) InVars {qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_1|} OutVars{qrcu_updaterThread1of1ForFork2_~readerstart1~0#1=|v_qrcu_updaterThread1of1ForFork2_~readerstart1~0#1_5|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1_2|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1=|v_qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1_1|, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1_2|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork2_assume_abort_if_not_~cond#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#t~nondet7#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_#in~readerstart1#1, qrcu_updaterThread1of1ForFork2___VERIFIER_atomic_check_progress1_~readerstart1#1, qrcu_updaterThread1of1ForFork2_assume_abort_if_not_#in~cond#1][148], [72#L744-3true, 220#true, Black: 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), Black: 286#true, 251#(<= ~ctr1~0 3), Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 80#L777-2true, 243#(<= 2 ~ctr1~0), Black: 296#(<= 2 ~ctr1~0), 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 297#(<= 3 ~ctr1~0), Black: 240#true, 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), qrcu_updaterThread1of1ForFork2InUse, 169#L725-3true, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), 230#(= ~ctr2~0 0)]) [2022-09-16 11:30:08,142 INFO L383 tUnfolder$Statistics]: this new event has 87 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L386 tUnfolder$Statistics]: existing Event has 87 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L386 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2022-09-16 11:30:08,142 INFO L386 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2022-09-16 11:30:08,179 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([940] L758-->L758-3: Formula: (let ((.cse0 (<= |v_qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx#1_9| 0)) (.cse1 (= |v_qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx#1_9| |v_qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx#1_9|)) (.cse2 (= |v_qrcu_reader2Thread1of1ForFork1_~myidx~1#1_13| |v_qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx#1_9|))) (or (and (<= 0 (+ 2147483647 v_~ctr1~0_In_1)) .cse0 (= v_~ctr1~0_In_1 (+ v_~ctr1~0_Out_2 1)) (<= v_~ctr1~0_In_1 2147483648) .cse1 .cse2 (= v_~ctr2~0_Out_2 v_~ctr2~0_In_1)) (and (<= v_~ctr2~0_Out_2 2147483647) (= (+ v_~ctr2~0_Out_2 1) v_~ctr2~0_In_1) (not .cse0) (<= 0 (+ v_~ctr2~0_Out_2 2147483648)) .cse1 .cse2 (= v_~ctr1~0_Out_2 v_~ctr1~0_In_1)))) InVars {qrcu_reader2Thread1of1ForFork1_~myidx~1#1=|v_qrcu_reader2Thread1of1ForFork1_~myidx~1#1_13|, ~ctr1~0=v_~ctr1~0_In_1, ~ctr2~0=v_~ctr2~0_In_1} OutVars{qrcu_reader2Thread1of1ForFork1_~myidx~1#1=|v_qrcu_reader2Thread1of1ForFork1_~myidx~1#1_13|, qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post5#1=|v_qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post5#1_9|, qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx#1=|v_qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx#1_9|, qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx#1=|v_qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx#1_9|, qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post6#1=|v_qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post6#1_9|, ~ctr1~0=v_~ctr1~0_Out_2, ~ctr2~0=v_~ctr2~0_Out_2} AuxVars[] AssignedVars[qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post5#1, qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx#1, qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx#1, qrcu_reader2Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post6#1, ~ctr1~0, ~ctr2~0][112], [220#true, 289#(<= ~ctr2~0 0), 42#L758-3true, Black: 225#(= ~ctr1~0 1), Black: 286#true, 240#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), 251#(<= ~ctr1~0 3), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 230#(= ~ctr2~0 0), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 200#L770true, Black: 243#(<= 2 ~ctr1~0), 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), qrcu_updaterThread1of1ForFork2InUse, 169#L725-3true, 64#L786-4true, 296#(<= 2 ~ctr1~0), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0))]) [2022-09-16 11:30:08,179 INFO L383 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2022-09-16 11:30:08,179 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-09-16 11:30:08,179 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-09-16 11:30:08,179 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-09-16 11:30:08,180 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1000] L771-->L771-1: Formula: (<= v_~idx~0_3 0) InVars {~idx~0=v_~idx~0_3} OutVars{~idx~0=v_~idx~0_3} AuxVars[] AssignedVars[][158], [220#true, Black: 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), Black: 286#true, 193#L746true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 243#(<= 2 ~ctr1~0), 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 233#true, Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 101#L771-1true, Black: 240#true, 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), qrcu_updaterThread1of1ForFork2InUse, 250#(<= ~ctr1~0 2), 169#L725-3true, 64#L786-4true, 296#(<= 2 ~ctr1~0), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), 230#(= ~ctr2~0 0), Black: 251#(<= ~ctr1~0 3)]) [2022-09-16 11:30:08,180 INFO L383 tUnfolder$Statistics]: this new event has 85 ancestors and is cut-off event [2022-09-16 11:30:08,180 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-09-16 11:30:08,180 INFO L386 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-09-16 11:30:08,180 INFO L386 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-09-16 11:30:08,180 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1000] L771-->L771-1: Formula: (<= v_~idx~0_3 0) InVars {~idx~0=v_~idx~0_3} OutVars{~idx~0=v_~idx~0_3} AuxVars[] AssignedVars[][158], [72#L744-3true, 220#true, Black: 289#(<= ~ctr2~0 0), Black: 225#(= ~ctr1~0 1), Black: 286#true, Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), 251#(<= ~ctr1~0 3), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), 243#(<= 2 ~ctr1~0), Black: 296#(<= 2 ~ctr1~0), 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 236#(<= ~ctr1~0 2), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 101#L771-1true, 297#(<= 3 ~ctr1~0), Black: 240#true, 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), qrcu_updaterThread1of1ForFork2InUse, 169#L725-3true, 64#L786-4true, Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), 230#(= ~ctr2~0 0)]) [2022-09-16 11:30:08,180 INFO L383 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2022-09-16 11:30:08,180 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-09-16 11:30:08,180 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-09-16 11:30:08,181 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-09-16 11:30:09,194 INFO L130 PetriNetUnfolder]: 4987/12235 cut-off events. [2022-09-16 11:30:09,195 INFO L131 PetriNetUnfolder]: For 50942/51780 co-relation queries the response was YES. [2022-09-16 11:30:09,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40201 conditions, 12235 events. 4987/12235 cut-off events. For 50942/51780 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 125423 event pairs, 1783 based on Foata normal form. 635/11558 useless extension candidates. Maximal degree in co-relation 40180. Up to 4289 conditions per place. [2022-09-16 11:30:09,295 INFO L137 encePairwiseOnDemand]: 218/225 looper letters, 186 selfloop transitions, 6 changer transitions 4/368 dead transitions. [2022-09-16 11:30:09,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 368 transitions, 3031 flow [2022-09-16 11:30:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:30:09,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:30:09,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 986 transitions. [2022-09-16 11:30:09,297 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8764444444444445 [2022-09-16 11:30:09,297 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 986 transitions. [2022-09-16 11:30:09,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 986 transitions. [2022-09-16 11:30:09,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:09,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 986 transitions. [2022-09-16 11:30:09,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.2) internal successors, (986), 5 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:09,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:09,302 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:09,302 INFO L175 Difference]: Start difference. First operand has 216 places, 263 transitions, 1600 flow. Second operand 5 states and 986 transitions. [2022-09-16 11:30:09,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 368 transitions, 3031 flow [2022-09-16 11:30:09,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 368 transitions, 2908 flow, removed 50 selfloop flow, removed 1 redundant places. [2022-09-16 11:30:09,345 INFO L231 Difference]: Finished difference. Result has 222 places, 266 transitions, 1589 flow [2022-09-16 11:30:09,345 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1589, PETRI_PLACES=222, PETRI_TRANSITIONS=266} [2022-09-16 11:30:09,346 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 20 predicate places. [2022-09-16 11:30:09,346 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 266 transitions, 1589 flow [2022-09-16 11:30:09,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:09,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:09,346 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] [2022-09-16 11:30:09,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:30:09,346 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:09,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:09,347 INFO L85 PathProgramCache]: Analyzing trace with hash 293021593, now seen corresponding path program 1 times [2022-09-16 11:30:09,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:09,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440543313] [2022-09-16 11:30:09,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:09,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:09,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:09,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:09,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440543313] [2022-09-16 11:30:09,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440543313] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:09,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:09,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:30:09,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294919112] [2022-09-16 11:30:09,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:09,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:30:09,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:09,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:30:09,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:30:09,419 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:09,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 266 transitions, 1589 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:09,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:09,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:09,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:10,747 INFO L130 PetriNetUnfolder]: 4975/10979 cut-off events. [2022-09-16 11:30:10,748 INFO L131 PetriNetUnfolder]: For 51767/52080 co-relation queries the response was YES. [2022-09-16 11:30:10,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41735 conditions, 10979 events. 4975/10979 cut-off events. For 51767/52080 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 107738 event pairs, 2174 based on Foata normal form. 36/10310 useless extension candidates. Maximal degree in co-relation 41710. Up to 7527 conditions per place. [2022-09-16 11:30:10,887 INFO L137 encePairwiseOnDemand]: 206/225 looper letters, 200 selfloop transitions, 55 changer transitions 3/381 dead transitions. [2022-09-16 11:30:10,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 381 transitions, 2684 flow [2022-09-16 11:30:10,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:30:10,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:30:10,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1355 transitions. [2022-09-16 11:30:10,891 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7527777777777778 [2022-09-16 11:30:10,891 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1355 transitions. [2022-09-16 11:30:10,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1355 transitions. [2022-09-16 11:30:10,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:10,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1355 transitions. [2022-09-16 11:30:10,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 169.375) internal successors, (1355), 8 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:10,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 225.0) internal successors, (2025), 9 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:10,898 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 225.0) internal successors, (2025), 9 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:10,898 INFO L175 Difference]: Start difference. First operand has 222 places, 266 transitions, 1589 flow. Second operand 8 states and 1355 transitions. [2022-09-16 11:30:10,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 381 transitions, 2684 flow [2022-09-16 11:30:10,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 381 transitions, 2675 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-09-16 11:30:10,954 INFO L231 Difference]: Finished difference. Result has 232 places, 293 transitions, 2032 flow [2022-09-16 11:30:10,954 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2032, PETRI_PLACES=232, PETRI_TRANSITIONS=293} [2022-09-16 11:30:10,955 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 30 predicate places. [2022-09-16 11:30:10,955 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 293 transitions, 2032 flow [2022-09-16 11:30:10,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:10,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:10,956 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] [2022-09-16 11:30:10,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:30:10,956 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:10,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:10,956 INFO L85 PathProgramCache]: Analyzing trace with hash -537487864, now seen corresponding path program 1 times [2022-09-16 11:30:10,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:10,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298540884] [2022-09-16 11:30:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:10,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:11,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:11,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:11,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298540884] [2022-09-16 11:30:11,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298540884] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:11,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:11,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:30:11,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603809629] [2022-09-16 11:30:11,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:11,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:30:11,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:11,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:30:11,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:30:11,024 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:11,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 293 transitions, 2032 flow. Second operand has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:11,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:11,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:11,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:12,396 INFO L130 PetriNetUnfolder]: 5017/10972 cut-off events. [2022-09-16 11:30:12,396 INFO L131 PetriNetUnfolder]: For 57427/57748 co-relation queries the response was YES. [2022-09-16 11:30:12,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43315 conditions, 10972 events. 5017/10972 cut-off events. For 57427/57748 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 106697 event pairs, 2112 based on Foata normal form. 42/10356 useless extension candidates. Maximal degree in co-relation 43286. Up to 7503 conditions per place. [2022-09-16 11:30:12,554 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 202 selfloop transitions, 55 changer transitions 0/380 dead transitions. [2022-09-16 11:30:12,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 380 transitions, 3086 flow [2022-09-16 11:30:12,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:30:12,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:30:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1033 transitions. [2022-09-16 11:30:12,558 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7651851851851852 [2022-09-16 11:30:12,558 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1033 transitions. [2022-09-16 11:30:12,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1033 transitions. [2022-09-16 11:30:12,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:12,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1033 transitions. [2022-09-16 11:30:12,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 172.16666666666666) internal successors, (1033), 6 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:12,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:12,564 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:12,564 INFO L175 Difference]: Start difference. First operand has 232 places, 293 transitions, 2032 flow. Second operand 6 states and 1033 transitions. [2022-09-16 11:30:12,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 380 transitions, 3086 flow [2022-09-16 11:30:12,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 380 transitions, 3043 flow, removed 17 selfloop flow, removed 1 redundant places. [2022-09-16 11:30:12,676 INFO L231 Difference]: Finished difference. Result has 238 places, 308 transitions, 2375 flow [2022-09-16 11:30:12,677 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2375, PETRI_PLACES=238, PETRI_TRANSITIONS=308} [2022-09-16 11:30:12,677 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 36 predicate places. [2022-09-16 11:30:12,677 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 308 transitions, 2375 flow [2022-09-16 11:30:12,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:12,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:12,678 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] [2022-09-16 11:30:12,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:30:12,678 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:12,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash -114715911, now seen corresponding path program 1 times [2022-09-16 11:30:12,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:12,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501364548] [2022-09-16 11:30:12,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:12,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:12,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:12,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:12,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501364548] [2022-09-16 11:30:12,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501364548] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:12,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:12,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:30:12,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2373756] [2022-09-16 11:30:12,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:12,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:30:12,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:12,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:30:12,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:30:12,757 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:12,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 308 transitions, 2375 flow. Second operand has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:12,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:12,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:12,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:14,302 INFO L130 PetriNetUnfolder]: 4992/10940 cut-off events. [2022-09-16 11:30:14,302 INFO L131 PetriNetUnfolder]: For 60007/60353 co-relation queries the response was YES. [2022-09-16 11:30:14,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43829 conditions, 10940 events. 4992/10940 cut-off events. For 60007/60353 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 106235 event pairs, 2086 based on Foata normal form. 48/10340 useless extension candidates. Maximal degree in co-relation 43797. Up to 7480 conditions per place. [2022-09-16 11:30:14,415 INFO L137 encePairwiseOnDemand]: 209/225 looper letters, 205 selfloop transitions, 67 changer transitions 0/395 dead transitions. [2022-09-16 11:30:14,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 395 transitions, 3551 flow [2022-09-16 11:30:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:30:14,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:30:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1182 transitions. [2022-09-16 11:30:14,418 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7504761904761905 [2022-09-16 11:30:14,418 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1182 transitions. [2022-09-16 11:30:14,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1182 transitions. [2022-09-16 11:30:14,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:14,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1182 transitions. [2022-09-16 11:30:14,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 168.85714285714286) internal successors, (1182), 7 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:14,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:14,423 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:14,423 INFO L175 Difference]: Start difference. First operand has 238 places, 308 transitions, 2375 flow. Second operand 7 states and 1182 transitions. [2022-09-16 11:30:14,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 395 transitions, 3551 flow [2022-09-16 11:30:14,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 395 transitions, 3414 flow, removed 15 selfloop flow, removed 4 redundant places. [2022-09-16 11:30:14,519 INFO L231 Difference]: Finished difference. Result has 244 places, 326 transitions, 2779 flow [2022-09-16 11:30:14,520 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=2264, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2779, PETRI_PLACES=244, PETRI_TRANSITIONS=326} [2022-09-16 11:30:14,520 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 42 predicate places. [2022-09-16 11:30:14,520 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 326 transitions, 2779 flow [2022-09-16 11:30:14,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:14,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:14,521 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] [2022-09-16 11:30:14,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:30:14,521 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:14,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:14,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1270992782, now seen corresponding path program 2 times [2022-09-16 11:30:14,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:14,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185411290] [2022-09-16 11:30:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:14,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:14,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:14,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185411290] [2022-09-16 11:30:14,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185411290] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:14,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:14,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:30:14,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864704431] [2022-09-16 11:30:14,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:14,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:30:14,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:14,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:30:14,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:30:14,579 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:14,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 326 transitions, 2779 flow. Second operand has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:14,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:14,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:14,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:15,973 INFO L130 PetriNetUnfolder]: 4978/10924 cut-off events. [2022-09-16 11:30:15,974 INFO L131 PetriNetUnfolder]: For 59375/59739 co-relation queries the response was YES. [2022-09-16 11:30:16,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44167 conditions, 10924 events. 4978/10924 cut-off events. For 59375/59739 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 106236 event pairs, 2076 based on Foata normal form. 35/10319 useless extension candidates. Maximal degree in co-relation 44131. Up to 7759 conditions per place. [2022-09-16 11:30:16,282 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 215 selfloop transitions, 33 changer transitions 0/371 dead transitions. [2022-09-16 11:30:16,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 371 transitions, 3608 flow [2022-09-16 11:30:16,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:30:16,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:30:16,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 995 transitions. [2022-09-16 11:30:16,284 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.737037037037037 [2022-09-16 11:30:16,284 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 995 transitions. [2022-09-16 11:30:16,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 995 transitions. [2022-09-16 11:30:16,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:16,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 995 transitions. [2022-09-16 11:30:16,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.83333333333334) internal successors, (995), 6 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:16,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:16,289 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 225.0) internal successors, (1575), 7 states have internal predecessors, (1575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:16,289 INFO L175 Difference]: Start difference. First operand has 244 places, 326 transitions, 2779 flow. Second operand 6 states and 995 transitions. [2022-09-16 11:30:16,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 371 transitions, 3608 flow [2022-09-16 11:30:16,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 371 transitions, 3532 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-09-16 11:30:16,376 INFO L231 Difference]: Finished difference. Result has 248 places, 331 transitions, 2910 flow [2022-09-16 11:30:16,377 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2910, PETRI_PLACES=248, PETRI_TRANSITIONS=331} [2022-09-16 11:30:16,377 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 46 predicate places. [2022-09-16 11:30:16,377 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 331 transitions, 2910 flow [2022-09-16 11:30:16,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.83333333333334) internal successors, (881), 6 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:16,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:16,378 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] [2022-09-16 11:30:16,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-16 11:30:16,378 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting qrcu_updaterErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:16,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash 33165790, now seen corresponding path program 1 times [2022-09-16 11:30:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:16,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451154233] [2022-09-16 11:30:16,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:16,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:16,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:16,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:16,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451154233] [2022-09-16 11:30:16,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451154233] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:16,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:16,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:30:16,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787849098] [2022-09-16 11:30:16,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:16,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:30:16,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:16,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:30:16,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:30:16,435 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:16,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 331 transitions, 2910 flow. Second operand has 6 states, 6 states have (on average 147.33333333333334) internal successors, (884), 6 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:16,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:16,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:16,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:17,725 INFO L130 PetriNetUnfolder]: 3676/8873 cut-off events. [2022-09-16 11:30:17,725 INFO L131 PetriNetUnfolder]: For 51069/51303 co-relation queries the response was YES. [2022-09-16 11:30:17,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34013 conditions, 8873 events. 3676/8873 cut-off events. For 51069/51303 co-relation queries the response was YES. Maximal size of possible extension queue 615. Compared 86431 event pairs, 1543 based on Foata normal form. 54/8413 useless extension candidates. Maximal degree in co-relation 33976. Up to 5057 conditions per place. [2022-09-16 11:30:17,859 INFO L137 encePairwiseOnDemand]: 209/225 looper letters, 218 selfloop transitions, 38 changer transitions 0/379 dead transitions. [2022-09-16 11:30:17,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 379 transitions, 3737 flow [2022-09-16 11:30:17,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:30:17,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:30:17,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1144 transitions. [2022-09-16 11:30:17,863 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7263492063492063 [2022-09-16 11:30:17,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1144 transitions. [2022-09-16 11:30:17,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1144 transitions. [2022-09-16 11:30:17,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:17,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1144 transitions. [2022-09-16 11:30:17,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.42857142857142) internal successors, (1144), 7 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:17,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:17,869 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:17,869 INFO L175 Difference]: Start difference. First operand has 248 places, 331 transitions, 2910 flow. Second operand 7 states and 1144 transitions. [2022-09-16 11:30:17,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 379 transitions, 3737 flow [2022-09-16 11:30:17,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 379 transitions, 3595 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-09-16 11:30:17,966 INFO L231 Difference]: Finished difference. Result has 247 places, 321 transitions, 2759 flow [2022-09-16 11:30:17,967 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=2502, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2759, PETRI_PLACES=247, PETRI_TRANSITIONS=321} [2022-09-16 11:30:17,967 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 45 predicate places. [2022-09-16 11:30:17,967 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 321 transitions, 2759 flow [2022-09-16 11:30:17,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.33333333333334) internal successors, (884), 6 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:17,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:17,968 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] [2022-09-16 11:30:17,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:30:17,968 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:17,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:17,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2132510538, now seen corresponding path program 1 times [2022-09-16 11:30:17,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:17,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053258000] [2022-09-16 11:30:17,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:17,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:18,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:18,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053258000] [2022-09-16 11:30:18,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053258000] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:18,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:18,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:30:18,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916142211] [2022-09-16 11:30:18,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:18,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:30:18,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:18,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:30:18,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:30:18,080 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:18,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 321 transitions, 2759 flow. Second operand has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:18,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:18,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:18,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:19,635 INFO L130 PetriNetUnfolder]: 3845/9270 cut-off events. [2022-09-16 11:30:19,635 INFO L131 PetriNetUnfolder]: For 50291/50534 co-relation queries the response was YES. [2022-09-16 11:30:19,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35063 conditions, 9270 events. 3845/9270 cut-off events. For 50291/50534 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 90169 event pairs, 1178 based on Foata normal form. 85/8919 useless extension candidates. Maximal degree in co-relation 35027. Up to 5171 conditions per place. [2022-09-16 11:30:19,726 INFO L137 encePairwiseOnDemand]: 205/225 looper letters, 245 selfloop transitions, 103 changer transitions 6/477 dead transitions. [2022-09-16 11:30:19,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 477 transitions, 4498 flow [2022-09-16 11:30:19,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:30:19,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:30:19,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1679 transitions. [2022-09-16 11:30:19,730 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7462222222222222 [2022-09-16 11:30:19,730 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1679 transitions. [2022-09-16 11:30:19,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1679 transitions. [2022-09-16 11:30:19,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:19,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1679 transitions. [2022-09-16 11:30:19,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 167.9) internal successors, (1679), 10 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:19,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 225.0) internal successors, (2475), 11 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:19,737 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 225.0) internal successors, (2475), 11 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:19,737 INFO L175 Difference]: Start difference. First operand has 247 places, 321 transitions, 2759 flow. Second operand 10 states and 1679 transitions. [2022-09-16 11:30:19,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 477 transitions, 4498 flow [2022-09-16 11:30:19,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 477 transitions, 4443 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-09-16 11:30:19,825 INFO L231 Difference]: Finished difference. Result has 257 places, 353 transitions, 3453 flow [2022-09-16 11:30:19,826 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3453, PETRI_PLACES=257, PETRI_TRANSITIONS=353} [2022-09-16 11:30:19,826 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 55 predicate places. [2022-09-16 11:30:19,826 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 353 transitions, 3453 flow [2022-09-16 11:30:19,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:19,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:19,826 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] [2022-09-16 11:30:19,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-16 11:30:19,827 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:19,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash 900679472, now seen corresponding path program 1 times [2022-09-16 11:30:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:19,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440273403] [2022-09-16 11:30:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:19,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:19,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:19,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440273403] [2022-09-16 11:30:19,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440273403] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:19,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:19,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:30:19,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520666944] [2022-09-16 11:30:19,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:19,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:30:19,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:30:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:30:19,898 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:19,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 353 transitions, 3453 flow. Second operand has 7 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:19,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:19,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:19,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:21,580 INFO L130 PetriNetUnfolder]: 4036/9793 cut-off events. [2022-09-16 11:30:21,580 INFO L131 PetriNetUnfolder]: For 63302/63529 co-relation queries the response was YES. [2022-09-16 11:30:21,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39125 conditions, 9793 events. 4036/9793 cut-off events. For 63302/63529 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 96480 event pairs, 1563 based on Foata normal form. 39/9338 useless extension candidates. Maximal degree in co-relation 39084. Up to 5922 conditions per place. [2022-09-16 11:30:21,698 INFO L137 encePairwiseOnDemand]: 206/225 looper letters, 233 selfloop transitions, 90 changer transitions 1/447 dead transitions. [2022-09-16 11:30:21,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 447 transitions, 4861 flow [2022-09-16 11:30:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:30:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:30:21,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1476 transitions. [2022-09-16 11:30:21,701 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7288888888888889 [2022-09-16 11:30:21,701 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1476 transitions. [2022-09-16 11:30:21,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1476 transitions. [2022-09-16 11:30:21,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:21,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1476 transitions. [2022-09-16 11:30:21,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.0) internal successors, (1476), 9 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:21,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:21,709 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:21,709 INFO L175 Difference]: Start difference. First operand has 257 places, 353 transitions, 3453 flow. Second operand 9 states and 1476 transitions. [2022-09-16 11:30:21,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 447 transitions, 4861 flow [2022-09-16 11:30:21,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 447 transitions, 4758 flow, removed 39 selfloop flow, removed 3 redundant places. [2022-09-16 11:30:21,893 INFO L231 Difference]: Finished difference. Result has 264 places, 373 transitions, 3957 flow [2022-09-16 11:30:21,893 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=3346, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3957, PETRI_PLACES=264, PETRI_TRANSITIONS=373} [2022-09-16 11:30:21,894 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 62 predicate places. [2022-09-16 11:30:21,895 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 373 transitions, 3957 flow [2022-09-16 11:30:21,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:21,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:21,895 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] [2022-09-16 11:30:21,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-16 11:30:21,895 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:21,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:21,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1600848454, now seen corresponding path program 2 times [2022-09-16 11:30:21,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:21,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063899654] [2022-09-16 11:30:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:21,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:21,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:21,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:21,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063899654] [2022-09-16 11:30:21,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063899654] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:21,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:21,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:30:21,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919777994] [2022-09-16 11:30:21,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:21,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:30:21,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:30:21,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:30:21,997 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:21,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 373 transitions, 3957 flow. Second operand has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:21,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:21,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:21,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:23,880 INFO L130 PetriNetUnfolder]: 4462/11191 cut-off events. [2022-09-16 11:30:23,880 INFO L131 PetriNetUnfolder]: For 80548/80810 co-relation queries the response was YES. [2022-09-16 11:30:23,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45050 conditions, 11191 events. 4462/11191 cut-off events. For 80548/80810 co-relation queries the response was YES. Maximal size of possible extension queue 622. Compared 114978 event pairs, 1690 based on Foata normal form. 69/10709 useless extension candidates. Maximal degree in co-relation 45007. Up to 5605 conditions per place. [2022-09-16 11:30:24,003 INFO L137 encePairwiseOnDemand]: 206/225 looper letters, 269 selfloop transitions, 113 changer transitions 7/512 dead transitions. [2022-09-16 11:30:24,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 512 transitions, 5864 flow [2022-09-16 11:30:24,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:30:24,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:30:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1504 transitions. [2022-09-16 11:30:24,006 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7427160493827161 [2022-09-16 11:30:24,006 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1504 transitions. [2022-09-16 11:30:24,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1504 transitions. [2022-09-16 11:30:24,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:24,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1504 transitions. [2022-09-16 11:30:24,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 167.11111111111111) internal successors, (1504), 9 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:24,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:24,011 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:24,011 INFO L175 Difference]: Start difference. First operand has 264 places, 373 transitions, 3957 flow. Second operand 9 states and 1504 transitions. [2022-09-16 11:30:24,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 512 transitions, 5864 flow [2022-09-16 11:30:24,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 512 transitions, 5744 flow, removed 25 selfloop flow, removed 4 redundant places. [2022-09-16 11:30:24,237 INFO L231 Difference]: Finished difference. Result has 269 places, 400 transitions, 4531 flow [2022-09-16 11:30:24,237 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=3857, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4531, PETRI_PLACES=269, PETRI_TRANSITIONS=400} [2022-09-16 11:30:24,238 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 67 predicate places. [2022-09-16 11:30:24,238 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 400 transitions, 4531 flow [2022-09-16 11:30:24,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:24,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:24,238 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] [2022-09-16 11:30:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-16 11:30:24,238 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1060676927, now seen corresponding path program 1 times [2022-09-16 11:30:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:24,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863174835] [2022-09-16 11:30:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:24,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:24,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:24,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863174835] [2022-09-16 11:30:24,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863174835] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:24,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:24,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:30:24,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750958134] [2022-09-16 11:30:24,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:24,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:30:24,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:24,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:30:24,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:30:24,307 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 225 [2022-09-16 11:30:24,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 400 transitions, 4531 flow. Second operand has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:24,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:24,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 225 [2022-09-16 11:30:24,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:26,999 INFO L130 PetriNetUnfolder]: 6511/15632 cut-off events. [2022-09-16 11:30:26,999 INFO L131 PetriNetUnfolder]: For 112135/112496 co-relation queries the response was YES. [2022-09-16 11:30:27,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60633 conditions, 15632 events. 6511/15632 cut-off events. For 112135/112496 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 159825 event pairs, 1557 based on Foata normal form. 104/14742 useless extension candidates. Maximal degree in co-relation 60588. Up to 4592 conditions per place. [2022-09-16 11:30:27,191 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 399 selfloop transitions, 116 changer transitions 32/658 dead transitions. [2022-09-16 11:30:27,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 658 transitions, 8132 flow [2022-09-16 11:30:27,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:30:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:30:27,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1612 transitions. [2022-09-16 11:30:27,193 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7164444444444444 [2022-09-16 11:30:27,193 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1612 transitions. [2022-09-16 11:30:27,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1612 transitions. [2022-09-16 11:30:27,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:27,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1612 transitions. [2022-09-16 11:30:27,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.2) internal successors, (1612), 10 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:27,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 225.0) internal successors, (2475), 11 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:27,197 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 225.0) internal successors, (2475), 11 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:27,197 INFO L175 Difference]: Start difference. First operand has 269 places, 400 transitions, 4531 flow. Second operand 10 states and 1612 transitions. [2022-09-16 11:30:27,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 658 transitions, 8132 flow [2022-09-16 11:30:27,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 658 transitions, 7829 flow, removed 26 selfloop flow, removed 7 redundant places. [2022-09-16 11:30:27,593 INFO L231 Difference]: Finished difference. Result has 277 places, 442 transitions, 5517 flow [2022-09-16 11:30:27,593 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=4338, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5517, PETRI_PLACES=277, PETRI_TRANSITIONS=442} [2022-09-16 11:30:27,594 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 75 predicate places. [2022-09-16 11:30:27,594 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 442 transitions, 5517 flow [2022-09-16 11:30:27,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:27,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:27,594 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] [2022-09-16 11:30:27,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-16 11:30:27,595 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:27,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:27,595 INFO L85 PathProgramCache]: Analyzing trace with hash 880846182, now seen corresponding path program 2 times [2022-09-16 11:30:27,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:27,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136037648] [2022-09-16 11:30:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:27,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:27,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:27,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:27,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136037648] [2022-09-16 11:30:27,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136037648] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:27,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:27,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:30:27,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637146449] [2022-09-16 11:30:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:27,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:30:27,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:30:27,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:30:27,665 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 225 [2022-09-16 11:30:27,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 442 transitions, 5517 flow. Second operand has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:27,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:27,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 225 [2022-09-16 11:30:27,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:30,284 INFO L130 PetriNetUnfolder]: 6007/14058 cut-off events. [2022-09-16 11:30:30,284 INFO L131 PetriNetUnfolder]: For 109509/109868 co-relation queries the response was YES. [2022-09-16 11:30:30,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58106 conditions, 14058 events. 6007/14058 cut-off events. For 109509/109868 co-relation queries the response was YES. Maximal size of possible extension queue 686. Compared 139505 event pairs, 1388 based on Foata normal form. 67/13195 useless extension candidates. Maximal degree in co-relation 58055. Up to 4592 conditions per place. [2022-09-16 11:30:30,417 INFO L137 encePairwiseOnDemand]: 205/225 looper letters, 372 selfloop transitions, 162 changer transitions 2/647 dead transitions. [2022-09-16 11:30:30,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 647 transitions, 8542 flow [2022-09-16 11:30:30,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:30:30,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:30:30,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1732 transitions. [2022-09-16 11:30:30,419 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6997979797979798 [2022-09-16 11:30:30,419 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1732 transitions. [2022-09-16 11:30:30,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1732 transitions. [2022-09-16 11:30:30,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:30,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1732 transitions. [2022-09-16 11:30:30,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 157.45454545454547) internal successors, (1732), 11 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:30,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 225.0) internal successors, (2700), 12 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:30,423 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 225.0) internal successors, (2700), 12 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:30,423 INFO L175 Difference]: Start difference. First operand has 277 places, 442 transitions, 5517 flow. Second operand 11 states and 1732 transitions. [2022-09-16 11:30:30,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 647 transitions, 8542 flow [2022-09-16 11:30:30,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 647 transitions, 8471 flow, removed 34 selfloop flow, removed 1 redundant places. [2022-09-16 11:30:30,846 INFO L231 Difference]: Finished difference. Result has 288 places, 491 transitions, 6615 flow [2022-09-16 11:30:30,846 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=5446, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6615, PETRI_PLACES=288, PETRI_TRANSITIONS=491} [2022-09-16 11:30:30,847 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 86 predicate places. [2022-09-16 11:30:30,847 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 491 transitions, 6615 flow [2022-09-16 11:30:30,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:30,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:30,847 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] [2022-09-16 11:30:30,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-16 11:30:30,848 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash -287199311, now seen corresponding path program 2 times [2022-09-16 11:30:30,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:30,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442516246] [2022-09-16 11:30:30,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:30,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:30,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:30,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442516246] [2022-09-16 11:30:30,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442516246] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:30,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:30,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:30:30,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411143145] [2022-09-16 11:30:30,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:30,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:30:30,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:30:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:30:30,929 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:30,930 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 491 transitions, 6615 flow. Second operand has 7 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:30,930 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:30,930 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:30,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:32,963 INFO L130 PetriNetUnfolder]: 4298/10997 cut-off events. [2022-09-16 11:30:32,963 INFO L131 PetriNetUnfolder]: For 97472/97820 co-relation queries the response was YES. [2022-09-16 11:30:33,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47585 conditions, 10997 events. 4298/10997 cut-off events. For 97472/97820 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 113291 event pairs, 1727 based on Foata normal form. 65/10398 useless extension candidates. Maximal degree in co-relation 47532. Up to 6821 conditions per place. [2022-09-16 11:30:33,103 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 343 selfloop transitions, 59 changer transitions 0/530 dead transitions. [2022-09-16 11:30:33,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 530 transitions, 7698 flow [2022-09-16 11:30:33,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:30:33,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:30:33,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1135 transitions. [2022-09-16 11:30:33,104 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7206349206349206 [2022-09-16 11:30:33,104 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1135 transitions. [2022-09-16 11:30:33,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1135 transitions. [2022-09-16 11:30:33,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:33,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1135 transitions. [2022-09-16 11:30:33,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.14285714285714) internal successors, (1135), 7 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:33,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:33,107 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:33,107 INFO L175 Difference]: Start difference. First operand has 288 places, 491 transitions, 6615 flow. Second operand 7 states and 1135 transitions. [2022-09-16 11:30:33,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 530 transitions, 7698 flow [2022-09-16 11:30:33,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 530 transitions, 7606 flow, removed 33 selfloop flow, removed 3 redundant places. [2022-09-16 11:30:33,351 INFO L231 Difference]: Finished difference. Result has 293 places, 499 transitions, 6832 flow [2022-09-16 11:30:33,352 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=6523, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6832, PETRI_PLACES=293, PETRI_TRANSITIONS=499} [2022-09-16 11:30:33,352 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 91 predicate places. [2022-09-16 11:30:33,352 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 499 transitions, 6832 flow [2022-09-16 11:30:33,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:33,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:33,352 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] [2022-09-16 11:30:33,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-16 11:30:33,353 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:33,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:33,353 INFO L85 PathProgramCache]: Analyzing trace with hash -267623528, now seen corresponding path program 3 times [2022-09-16 11:30:33,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:33,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303822251] [2022-09-16 11:30:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:33,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:33,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:33,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303822251] [2022-09-16 11:30:33,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303822251] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:33,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:33,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:30:33,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950548399] [2022-09-16 11:30:33,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:33,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:30:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:33,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:30:33,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:30:33,418 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:33,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 499 transitions, 6832 flow. Second operand has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:33,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:33,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:33,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:35,200 INFO L130 PetriNetUnfolder]: 4241/10899 cut-off events. [2022-09-16 11:30:35,200 INFO L131 PetriNetUnfolder]: For 101023/101456 co-relation queries the response was YES. [2022-09-16 11:30:35,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47523 conditions, 10899 events. 4241/10899 cut-off events. For 101023/101456 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 112513 event pairs, 1679 based on Foata normal form. 137/10398 useless extension candidates. Maximal degree in co-relation 47468. Up to 6599 conditions per place. [2022-09-16 11:30:35,342 INFO L137 encePairwiseOnDemand]: 210/225 looper letters, 363 selfloop transitions, 42 changer transitions 0/533 dead transitions. [2022-09-16 11:30:35,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 533 transitions, 7910 flow [2022-09-16 11:30:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:30:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:30:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1138 transitions. [2022-09-16 11:30:35,343 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7225396825396826 [2022-09-16 11:30:35,344 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1138 transitions. [2022-09-16 11:30:35,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1138 transitions. [2022-09-16 11:30:35,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:35,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1138 transitions. [2022-09-16 11:30:35,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.57142857142858) internal successors, (1138), 7 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:35,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:35,346 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 225.0) internal successors, (1800), 8 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:35,346 INFO L175 Difference]: Start difference. First operand has 293 places, 499 transitions, 6832 flow. Second operand 7 states and 1138 transitions. [2022-09-16 11:30:35,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 533 transitions, 7910 flow [2022-09-16 11:30:35,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 533 transitions, 7747 flow, removed 47 selfloop flow, removed 4 redundant places. [2022-09-16 11:30:35,644 INFO L231 Difference]: Finished difference. Result has 296 places, 496 transitions, 6739 flow [2022-09-16 11:30:35,644 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=6575, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6739, PETRI_PLACES=296, PETRI_TRANSITIONS=496} [2022-09-16 11:30:35,645 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 94 predicate places. [2022-09-16 11:30:35,645 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 496 transitions, 6739 flow [2022-09-16 11:30:35,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:35,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:35,645 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] [2022-09-16 11:30:35,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-16 11:30:35,645 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:35,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:35,645 INFO L85 PathProgramCache]: Analyzing trace with hash 733068380, now seen corresponding path program 1 times [2022-09-16 11:30:35,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:35,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219837384] [2022-09-16 11:30:35,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:35,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:35,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:35,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:35,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219837384] [2022-09-16 11:30:35,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219837384] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:35,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:35,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:30:35,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899013362] [2022-09-16 11:30:35,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:35,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:30:35,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:35,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:30:35,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:30:35,756 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 225 [2022-09-16 11:30:35,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 496 transitions, 6739 flow. Second operand has 9 states, 9 states have (on average 136.66666666666666) internal successors, (1230), 9 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:35,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:35,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 225 [2022-09-16 11:30:35,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:39,055 INFO L130 PetriNetUnfolder]: 6573/15967 cut-off events. [2022-09-16 11:30:39,055 INFO L131 PetriNetUnfolder]: For 150508/150949 co-relation queries the response was YES. [2022-09-16 11:30:39,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68389 conditions, 15967 events. 6573/15967 cut-off events. For 150508/150949 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 164722 event pairs, 1520 based on Foata normal form. 75/15012 useless extension candidates. Maximal degree in co-relation 68333. Up to 4623 conditions per place. [2022-09-16 11:30:39,236 INFO L137 encePairwiseOnDemand]: 209/225 looper letters, 435 selfloop transitions, 237 changer transitions 4/787 dead transitions. [2022-09-16 11:30:39,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 787 transitions, 11883 flow [2022-09-16 11:30:39,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:30:39,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:30:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1998 transitions. [2022-09-16 11:30:39,239 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.683076923076923 [2022-09-16 11:30:39,239 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1998 transitions. [2022-09-16 11:30:39,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1998 transitions. [2022-09-16 11:30:39,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:39,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1998 transitions. [2022-09-16 11:30:39,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 153.69230769230768) internal successors, (1998), 13 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:39,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 225.0) internal successors, (3150), 14 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:39,243 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 225.0) internal successors, (3150), 14 states have internal predecessors, (3150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:39,243 INFO L175 Difference]: Start difference. First operand has 296 places, 496 transitions, 6739 flow. Second operand 13 states and 1998 transitions. [2022-09-16 11:30:39,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 787 transitions, 11883 flow [2022-09-16 11:30:39,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 787 transitions, 11745 flow, removed 25 selfloop flow, removed 4 redundant places. [2022-09-16 11:30:39,749 INFO L231 Difference]: Finished difference. Result has 309 places, 597 transitions, 9540 flow [2022-09-16 11:30:39,750 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=6643, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9540, PETRI_PLACES=309, PETRI_TRANSITIONS=597} [2022-09-16 11:30:39,750 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 107 predicate places. [2022-09-16 11:30:39,751 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 597 transitions, 9540 flow [2022-09-16 11:30:39,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 136.66666666666666) internal successors, (1230), 9 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:39,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:39,751 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] [2022-09-16 11:30:39,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-16 11:30:39,751 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:39,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:39,752 INFO L85 PathProgramCache]: Analyzing trace with hash -464475905, now seen corresponding path program 1 times [2022-09-16 11:30:39,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:39,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679619734] [2022-09-16 11:30:39,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:39,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:39,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:39,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679619734] [2022-09-16 11:30:39,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679619734] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:39,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:39,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:30:39,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713585651] [2022-09-16 11:30:39,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:39,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:30:39,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:39,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:30:39,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:30:39,866 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 225 [2022-09-16 11:30:39,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 597 transitions, 9540 flow. Second operand has 9 states, 9 states have (on average 136.66666666666666) internal successors, (1230), 9 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:39,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:39,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 225 [2022-09-16 11:30:39,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:43,237 INFO L130 PetriNetUnfolder]: 6560/15564 cut-off events. [2022-09-16 11:30:43,237 INFO L131 PetriNetUnfolder]: For 164596/165132 co-relation queries the response was YES. [2022-09-16 11:30:43,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69831 conditions, 15564 events. 6560/15564 cut-off events. For 164596/165132 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 158175 event pairs, 1514 based on Foata normal form. 152/14778 useless extension candidates. Maximal degree in co-relation 69770. Up to 4623 conditions per place. [2022-09-16 11:30:43,483 INFO L137 encePairwiseOnDemand]: 208/225 looper letters, 494 selfloop transitions, 185 changer transitions 2/792 dead transitions. [2022-09-16 11:30:43,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 792 transitions, 12700 flow [2022-09-16 11:30:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:30:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:30:43,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1865 transitions. [2022-09-16 11:30:43,485 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6907407407407408 [2022-09-16 11:30:43,485 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1865 transitions. [2022-09-16 11:30:43,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1865 transitions. [2022-09-16 11:30:43,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:43,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1865 transitions. [2022-09-16 11:30:43,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 155.41666666666666) internal successors, (1865), 12 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:43,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 225.0) internal successors, (2925), 13 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:43,489 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 225.0) internal successors, (2925), 13 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:43,489 INFO L175 Difference]: Start difference. First operand has 309 places, 597 transitions, 9540 flow. Second operand 12 states and 1865 transitions. [2022-09-16 11:30:43,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 792 transitions, 12700 flow [2022-09-16 11:30:44,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 792 transitions, 12625 flow, removed 26 selfloop flow, removed 3 redundant places. [2022-09-16 11:30:44,056 INFO L231 Difference]: Finished difference. Result has 319 places, 617 transitions, 10328 flow [2022-09-16 11:30:44,057 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=9469, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10328, PETRI_PLACES=319, PETRI_TRANSITIONS=617} [2022-09-16 11:30:44,057 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 117 predicate places. [2022-09-16 11:30:44,058 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 617 transitions, 10328 flow [2022-09-16 11:30:44,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 136.66666666666666) internal successors, (1230), 9 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:44,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:44,058 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] [2022-09-16 11:30:44,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-16 11:30:44,058 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:44,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:44,058 INFO L85 PathProgramCache]: Analyzing trace with hash 764688264, now seen corresponding path program 1 times [2022-09-16 11:30:44,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:44,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558383353] [2022-09-16 11:30:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:44,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:44,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:44,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:44,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558383353] [2022-09-16 11:30:44,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558383353] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:44,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:44,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:30:44,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072597079] [2022-09-16 11:30:44,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:44,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:30:44,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:44,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:30:44,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:30:44,134 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:44,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 617 transitions, 10328 flow. Second operand has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:44,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:44,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:44,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:46,745 INFO L130 PetriNetUnfolder]: 4791/12598 cut-off events. [2022-09-16 11:30:46,745 INFO L131 PetriNetUnfolder]: For 147059/147505 co-relation queries the response was YES. [2022-09-16 11:30:46,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58336 conditions, 12598 events. 4791/12598 cut-off events. For 147059/147505 co-relation queries the response was YES. Maximal size of possible extension queue 641. Compared 132670 event pairs, 1475 based on Foata normal form. 194/12140 useless extension candidates. Maximal degree in co-relation 58273. Up to 6745 conditions per place. [2022-09-16 11:30:47,009 INFO L137 encePairwiseOnDemand]: 212/225 looper letters, 350 selfloop transitions, 219 changer transitions 0/700 dead transitions. [2022-09-16 11:30:47,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 700 transitions, 12168 flow [2022-09-16 11:30:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:30:47,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:30:47,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1617 transitions. [2022-09-16 11:30:47,012 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7186666666666667 [2022-09-16 11:30:47,012 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1617 transitions. [2022-09-16 11:30:47,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1617 transitions. [2022-09-16 11:30:47,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:47,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1617 transitions. [2022-09-16 11:30:47,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 161.7) internal successors, (1617), 10 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:47,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 225.0) internal successors, (2475), 11 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:47,016 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 225.0) internal successors, (2475), 11 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:47,016 INFO L175 Difference]: Start difference. First operand has 319 places, 617 transitions, 10328 flow. Second operand 10 states and 1617 transitions. [2022-09-16 11:30:47,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 700 transitions, 12168 flow [2022-09-16 11:30:47,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 700 transitions, 11961 flow, removed 19 selfloop flow, removed 7 redundant places. [2022-09-16 11:30:47,439 INFO L231 Difference]: Finished difference. Result has 323 places, 629 transitions, 10899 flow [2022-09-16 11:30:47,439 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=10043, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10899, PETRI_PLACES=323, PETRI_TRANSITIONS=629} [2022-09-16 11:30:47,440 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 121 predicate places. [2022-09-16 11:30:47,440 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 629 transitions, 10899 flow [2022-09-16 11:30:47,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:47,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:47,440 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] [2022-09-16 11:30:47,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:30:47,440 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:47,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:47,441 INFO L85 PathProgramCache]: Analyzing trace with hash 504597355, now seen corresponding path program 1 times [2022-09-16 11:30:47,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:47,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517324743] [2022-09-16 11:30:47,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:47,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:47,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:47,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517324743] [2022-09-16 11:30:47,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517324743] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:47,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:47,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:30:47,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837761032] [2022-09-16 11:30:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:47,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:30:47,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:47,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:30:47,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:30:47,511 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:47,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 629 transitions, 10899 flow. Second operand has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:47,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:47,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:47,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:50,088 INFO L130 PetriNetUnfolder]: 4788/12610 cut-off events. [2022-09-16 11:30:50,088 INFO L131 PetriNetUnfolder]: For 159160/159648 co-relation queries the response was YES. [2022-09-16 11:30:50,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59118 conditions, 12610 events. 4788/12610 cut-off events. For 159160/159648 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 132855 event pairs, 1502 based on Foata normal form. 193/12114 useless extension candidates. Maximal degree in co-relation 59054. Up to 7271 conditions per place. [2022-09-16 11:30:50,385 INFO L137 encePairwiseOnDemand]: 211/225 looper letters, 388 selfloop transitions, 185 changer transitions 0/704 dead transitions. [2022-09-16 11:30:50,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 704 transitions, 12785 flow [2022-09-16 11:30:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:30:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:30:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1467 transitions. [2022-09-16 11:30:50,386 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7244444444444444 [2022-09-16 11:30:50,386 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1467 transitions. [2022-09-16 11:30:50,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1467 transitions. [2022-09-16 11:30:50,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:50,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1467 transitions. [2022-09-16 11:30:50,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 163.0) internal successors, (1467), 9 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:50,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:50,389 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:50,389 INFO L175 Difference]: Start difference. First operand has 323 places, 629 transitions, 10899 flow. Second operand 9 states and 1467 transitions. [2022-09-16 11:30:50,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 704 transitions, 12785 flow [2022-09-16 11:30:50,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 704 transitions, 12367 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-09-16 11:30:50,853 INFO L231 Difference]: Finished difference. Result has 327 places, 641 transitions, 11295 flow [2022-09-16 11:30:50,854 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=10511, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11295, PETRI_PLACES=327, PETRI_TRANSITIONS=641} [2022-09-16 11:30:50,854 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 125 predicate places. [2022-09-16 11:30:50,854 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 641 transitions, 11295 flow [2022-09-16 11:30:50,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:50,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:50,855 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] [2022-09-16 11:30:50,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-16 11:30:50,855 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting qrcu_updaterErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1409686086, now seen corresponding path program 1 times [2022-09-16 11:30:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:50,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661961774] [2022-09-16 11:30:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:50,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:50,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:50,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:50,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661961774] [2022-09-16 11:30:50,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661961774] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:50,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:50,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:30:50,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820474850] [2022-09-16 11:30:50,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:50,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:30:50,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:50,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:30:50,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:30:50,892 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 225 [2022-09-16 11:30:50,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 641 transitions, 11295 flow. Second operand has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:50,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:50,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 225 [2022-09-16 11:30:50,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:52,683 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][642], [Black: 380#(or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))), Black: 384#(and (<= ~ctr1~0 2) (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 386#(and (or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))) (or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (<= ~ctr1~0 1))), Black: 497#(and (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 379#(or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= ~ctr1~0 1))), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 503#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 513#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 509#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 517#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), 155#L774-3true, Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 398#(<= 0 (+ ~ctr2~0 |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483646)), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), 289#(<= ~ctr2~0 0), 582#true, Black: 286#true, Black: 534#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 414#(and (<= ~ctr2~0 2147483645) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2)), Black: 544#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (<= 1 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (= ~idx~0 0)), Black: 296#(<= 2 ~ctr1~0), Black: 303#(= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0), Black: 556#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 302#(= ~idx~0 0), Black: 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 562#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 435#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 437#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 424#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 433#(and (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 431#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 439#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~idx~0 0)), Black: 319#(and (<= ~ctr1~0 2) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 220#true, Black: 314#(and (<= ~ctr1~0 2) (= ~ctr2~0 0)), Black: 315#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 361#true, Black: 313#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 571#(and (<= ~ctr1~0 3) (= ~ctr2~0 0)), 247#true, Black: 578#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 3) (<= ~ctr1~0 3) (= ~ctr2~0 0)), Black: 329#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 332#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 457#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 465#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (<= 0 (+ |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), qrcu_updaterThread1of1ForFork2InUse, Black: 345#(and (<= 2 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 339#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 566#true, 374#true, Black: 340#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 392#true, Black: 477#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648))), Black: 476#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 225#(= ~ctr1~0 1), Black: 230#(= ~ctr2~0 0), 36#L739-3true, Black: 488#(and (<= 0 (+ ~ctr2~0 2147483648)) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 236#(<= ~ctr1~0 2), 310#true, Black: 366#(<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1), Black: 243#(<= 2 ~ctr1~0), 64#L786-4true, Black: 251#(<= ~ctr1~0 3), 293#true]) [2022-09-16 11:30:52,684 INFO L383 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-09-16 11:30:52,684 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-09-16 11:30:52,684 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:52,684 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:52,684 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1051] L774-2-->L774-2: Formula: (< 0 v_~ctr2~0_22) InVars {~ctr2~0=v_~ctr2~0_22} OutVars{~ctr2~0=v_~ctr2~0_22} AuxVars[] AssignedVars[][643], [Black: 380#(or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))), Black: 384#(and (<= ~ctr1~0 2) (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 386#(and (or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))) (or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (<= ~ctr1~0 1))), Black: 497#(and (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 379#(or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= ~ctr1~0 1))), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 503#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 513#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 509#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 517#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 398#(<= 0 (+ ~ctr2~0 |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483646)), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 289#(<= ~ctr2~0 0), 582#true, Black: 534#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 414#(and (<= ~ctr2~0 2147483645) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2)), Black: 544#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (<= 1 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (= ~idx~0 0)), 286#true, Black: 296#(<= 2 ~ctr1~0), Black: 303#(= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0), Black: 556#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 302#(= ~idx~0 0), Black: 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 562#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 435#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 437#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 424#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 433#(and (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 431#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 439#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~idx~0 0)), Black: 319#(and (<= ~ctr1~0 2) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 220#true, Black: 314#(and (<= ~ctr1~0 2) (= ~ctr2~0 0)), Black: 315#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, 361#true, Black: 313#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 571#(and (<= ~ctr1~0 3) (= ~ctr2~0 0)), 247#true, Black: 578#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 3) (<= ~ctr1~0 3) (= ~ctr2~0 0)), 187#L774-2true, Black: 329#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 332#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 457#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 465#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (<= 0 (+ |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), qrcu_updaterThread1of1ForFork2InUse, Black: 345#(and (<= 2 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 339#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 566#true, 374#true, Black: 340#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 392#true, Black: 477#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648))), Black: 476#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 225#(= ~ctr1~0 1), Black: 230#(= ~ctr2~0 0), 36#L739-3true, Black: 488#(and (<= 0 (+ ~ctr2~0 2147483648)) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 236#(<= ~ctr1~0 2), 310#true, Black: 366#(<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1), Black: 243#(<= 2 ~ctr1~0), 64#L786-4true, Black: 251#(<= ~ctr1~0 3), 293#true]) [2022-09-16 11:30:52,684 INFO L383 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-09-16 11:30:52,684 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-09-16 11:30:52,684 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:52,684 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:52,825 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][693], [Black: 380#(or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))), Black: 384#(and (<= ~ctr1~0 2) (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 386#(and (or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))) (or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (<= ~ctr1~0 1))), Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 379#(or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= ~ctr1~0 1))), Black: 497#(and (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 503#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 513#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 509#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 517#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), 155#L774-3true, Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 398#(<= 0 (+ ~ctr2~0 |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483646)), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), 289#(<= ~ctr2~0 0), 582#true, Black: 286#true, Black: 534#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 414#(and (<= ~ctr2~0 2147483645) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2)), Black: 544#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (<= 1 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (= ~idx~0 0)), Black: 296#(<= 2 ~ctr1~0), Black: 303#(= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0), Black: 302#(= ~idx~0 0), Black: 556#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 562#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 435#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 437#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 424#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 433#(and (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 431#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 439#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~idx~0 0)), Black: 319#(and (<= ~ctr1~0 2) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 220#true, Black: 314#(and (<= ~ctr1~0 2) (= ~ctr2~0 0)), Black: 315#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 361#true, Black: 313#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 571#(and (<= ~ctr1~0 3) (= ~ctr2~0 0)), 247#true, Black: 578#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 3) (<= ~ctr1~0 3) (= ~ctr2~0 0)), Black: 329#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 332#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 457#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 465#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (<= 0 (+ |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), qrcu_updaterThread1of1ForFork2InUse, Black: 345#(and (<= 2 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 566#true, Black: 339#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 392#true, 374#true, Black: 340#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 477#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648))), Black: 476#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 225#(= ~ctr1~0 1), Black: 230#(= ~ctr2~0 0), 36#L739-3true, Black: 488#(and (<= 0 (+ ~ctr2~0 2147483648)) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 236#(<= ~ctr1~0 2), 310#true, 140#qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 366#(<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1), Black: 243#(<= 2 ~ctr1~0), 64#L786-4true, Black: 251#(<= ~ctr1~0 3), 293#true]) [2022-09-16 11:30:52,825 INFO L383 tUnfolder$Statistics]: this new event has 102 ancestors and is cut-off event [2022-09-16 11:30:52,825 INFO L386 tUnfolder$Statistics]: existing Event has 104 ancestors and is cut-off event [2022-09-16 11:30:52,825 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:52,825 INFO L386 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-09-16 11:30:53,066 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][642], [Black: 380#(or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))), Black: 384#(and (<= ~ctr1~0 2) (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 386#(and (or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))) (or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (<= ~ctr1~0 1))), Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 497#(and (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 379#(or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= ~ctr1~0 1))), Black: 503#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 513#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 509#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 517#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), 155#L774-3true, Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 398#(<= 0 (+ ~ctr2~0 |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483646)), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), 289#(<= ~ctr2~0 0), 582#true, Black: 286#true, Black: 414#(and (<= ~ctr2~0 2147483645) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2)), Black: 534#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 544#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (<= 1 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (= ~idx~0 0)), Black: 296#(<= 2 ~ctr1~0), Black: 303#(= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0), Black: 556#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 302#(= ~idx~0 0), Black: 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 562#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 435#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 437#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 424#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 433#(and (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 431#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 439#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~idx~0 0)), Black: 319#(and (<= ~ctr1~0 2) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 220#true, Black: 314#(and (<= ~ctr1~0 2) (= ~ctr2~0 0)), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 315#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 361#true, Black: 313#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 571#(and (<= ~ctr1~0 3) (= ~ctr2~0 0)), 247#true, Black: 578#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 3) (<= ~ctr1~0 3) (= ~ctr2~0 0)), Black: 329#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 332#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 457#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 465#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (<= 0 (+ |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), qrcu_updaterThread1of1ForFork2InUse, Black: 345#(and (<= 2 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 566#true, Black: 339#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 392#true, 374#true, Black: 340#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 477#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648))), Black: 476#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 225#(= ~ctr1~0 1), 162#L787-2true, Black: 230#(= ~ctr2~0 0), Black: 488#(and (<= 0 (+ ~ctr2~0 2147483648)) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 236#(<= ~ctr1~0 2), 310#true, Black: 366#(<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1), Black: 243#(<= 2 ~ctr1~0), Black: 251#(<= ~ctr1~0 3), 293#true]) [2022-09-16 11:30:53,067 INFO L383 tUnfolder$Statistics]: this new event has 108 ancestors and is cut-off event [2022-09-16 11:30:53,067 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:53,067 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-09-16 11:30:53,067 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:53,067 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1051] L774-2-->L774-2: Formula: (< 0 v_~ctr2~0_22) InVars {~ctr2~0=v_~ctr2~0_22} OutVars{~ctr2~0=v_~ctr2~0_22} AuxVars[] AssignedVars[][643], [Black: 380#(or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))), Black: 384#(and (<= ~ctr1~0 2) (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 386#(and (or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))) (or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (<= ~ctr1~0 1))), Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 497#(and (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 379#(or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= ~ctr1~0 1))), Black: 503#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 513#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 509#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 517#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 398#(<= 0 (+ ~ctr2~0 |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483646)), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 289#(<= ~ctr2~0 0), 582#true, Black: 414#(and (<= ~ctr2~0 2147483645) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2)), Black: 534#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 544#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (<= 1 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (= ~idx~0 0)), 286#true, Black: 296#(<= 2 ~ctr1~0), Black: 303#(= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0), Black: 556#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 302#(= ~idx~0 0), Black: 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 562#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 435#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 437#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 424#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 433#(and (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 431#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 439#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~idx~0 0)), Black: 319#(and (<= ~ctr1~0 2) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 220#true, Black: 314#(and (<= ~ctr1~0 2) (= ~ctr2~0 0)), 170#qrcu_reader2Err6ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 315#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 361#true, Black: 313#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 571#(and (<= ~ctr1~0 3) (= ~ctr2~0 0)), 247#true, Black: 578#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 3) (<= ~ctr1~0 3) (= ~ctr2~0 0)), 187#L774-2true, Black: 329#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 332#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 457#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 465#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (<= 0 (+ |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), qrcu_updaterThread1of1ForFork2InUse, Black: 345#(and (<= 2 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 566#true, Black: 339#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 392#true, 374#true, Black: 340#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 477#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648))), Black: 476#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 225#(= ~ctr1~0 1), 162#L787-2true, Black: 230#(= ~ctr2~0 0), Black: 488#(and (<= 0 (+ ~ctr2~0 2147483648)) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 236#(<= ~ctr1~0 2), 310#true, Black: 366#(<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1), Black: 243#(<= 2 ~ctr1~0), Black: 251#(<= ~ctr1~0 3), 293#true]) [2022-09-16 11:30:53,067 INFO L383 tUnfolder$Statistics]: this new event has 108 ancestors and is cut-off event [2022-09-16 11:30:53,067 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:53,067 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-09-16 11:30:53,067 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:53,077 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1050] L774-2-->L774-3: Formula: (not (< 0 v_~ctr2~0_21)) InVars {~ctr2~0=v_~ctr2~0_21} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[][693], [Black: 380#(or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))), Black: 384#(and (<= ~ctr1~0 2) (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 386#(and (or (and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1))) (or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (<= ~ctr1~0 1))), Black: 260#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 379#(or (and (<= ~ctr1~0 2) (= 0 (+ ~ctr2~0 1))) (and (= ~ctr2~0 0) (<= ~ctr1~0 1))), Black: 497#(and (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 257#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 503#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 258#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1) (= ~ctr2~0 0)), Black: 513#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 509#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1) (= ~idx~0 0)), Black: 517#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), 155#L774-3true, Black: 271#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 268#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 398#(<= 0 (+ ~ctr2~0 |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483646)), Black: 278#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 282#(and (= ~ctr2~0 0) (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), 289#(<= ~ctr2~0 0), 582#true, Black: 286#true, Black: 534#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (= ~idx~0 0)), Black: 414#(and (<= ~ctr2~0 2147483645) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2)), Black: 544#(and (= ~ctr2~0 0) (<= 1 ~ctr1~0) (<= 1 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (= ~idx~0 0)), Black: 296#(<= 2 ~ctr1~0), Black: 303#(= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0), Black: 302#(= ~idx~0 0), Black: 556#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 562#(and (<= ~ctr1~0 3) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 305#(and (= ~idx~0 0) (= |qrcu_reader2Thread1of1ForFork1_~myidx~1#1| 0)), Black: 435#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 437#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 424#(and (= ~ctr2~0 0) (= ~idx~0 0)), Black: 433#(and (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 431#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 439#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~idx~0 0)), Black: 319#(and (<= ~ctr1~0 2) (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 220#true, Black: 314#(and (<= ~ctr1~0 2) (= ~ctr2~0 0)), Black: 315#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2) (= ~ctr2~0 0)), 361#true, Black: 313#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), Black: 571#(and (<= ~ctr1~0 3) (= ~ctr2~0 0)), 247#true, Black: 578#(and (<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 3) (<= ~ctr1~0 3) (= ~ctr2~0 0)), Black: 329#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 332#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 457#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), Black: 465#(and (= |qrcu_reader1Thread1of1ForFork0_~myidx~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648)) (<= 0 (+ |qrcu_updaterThread1of1ForFork2_~sum~0#1| 2147483648)) (= ~ctr2~0 0) (= ~idx~0 0)), qrcu_updaterThread1of1ForFork2InUse, Black: 345#(and (<= 2 |qrcu_updaterThread1of1ForFork2_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 566#true, Black: 339#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), 392#true, 374#true, Black: 340#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 477#(and (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0) (<= 0 (+ ~ctr1~0 2147483648))), Black: 476#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 0)), Black: 225#(= ~ctr1~0 1), 162#L787-2true, Black: 230#(= ~ctr2~0 0), Black: 488#(and (<= 0 (+ ~ctr2~0 2147483648)) (= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1)), Black: 236#(<= ~ctr1~0 2), 310#true, 140#qrcu_reader2Err7ASSERT_VIOLATIONINTEGER_OVERFLOWtrue, Black: 366#(<= |qrcu_updaterThread1of1ForFork2_~sum~0#1| 1), Black: 243#(<= 2 ~ctr1~0), Black: 251#(<= ~ctr1~0 3), 293#true]) [2022-09-16 11:30:53,077 INFO L383 tUnfolder$Statistics]: this new event has 108 ancestors and is cut-off event [2022-09-16 11:30:53,077 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:53,077 INFO L386 tUnfolder$Statistics]: existing Event has 107 ancestors and is cut-off event [2022-09-16 11:30:53,077 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-09-16 11:30:53,127 INFO L130 PetriNetUnfolder]: 3927/10767 cut-off events. [2022-09-16 11:30:53,127 INFO L131 PetriNetUnfolder]: For 133542/134364 co-relation queries the response was YES. [2022-09-16 11:30:53,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50644 conditions, 10767 events. 3927/10767 cut-off events. For 133542/134364 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 112781 event pairs, 1124 based on Foata normal form. 223/10389 useless extension candidates. Maximal degree in co-relation 50578. Up to 5333 conditions per place. [2022-09-16 11:30:53,284 INFO L137 encePairwiseOnDemand]: 217/225 looper letters, 290 selfloop transitions, 127 changer transitions 0/723 dead transitions. [2022-09-16 11:30:53,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 723 transitions, 13634 flow [2022-09-16 11:30:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:30:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:30:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 911 transitions. [2022-09-16 11:30:53,286 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8097777777777778 [2022-09-16 11:30:53,286 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 911 transitions. [2022-09-16 11:30:53,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 911 transitions. [2022-09-16 11:30:53,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:53,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 911 transitions. [2022-09-16 11:30:53,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:53,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:53,288 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:53,288 INFO L175 Difference]: Start difference. First operand has 327 places, 641 transitions, 11295 flow. Second operand 5 states and 911 transitions. [2022-09-16 11:30:53,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 723 transitions, 13634 flow [2022-09-16 11:30:53,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 723 transitions, 13278 flow, removed 23 selfloop flow, removed 6 redundant places. [2022-09-16 11:30:53,716 INFO L231 Difference]: Finished difference. Result has 328 places, 665 transitions, 12146 flow [2022-09-16 11:30:53,717 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=10983, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12146, PETRI_PLACES=328, PETRI_TRANSITIONS=665} [2022-09-16 11:30:53,718 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 126 predicate places. [2022-09-16 11:30:53,718 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 665 transitions, 12146 flow [2022-09-16 11:30:53,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:53,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:53,718 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] [2022-09-16 11:30:53,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-09-16 11:30:53,718 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:53,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:53,719 INFO L85 PathProgramCache]: Analyzing trace with hash 935219368, now seen corresponding path program 1 times [2022-09-16 11:30:53,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:53,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130031014] [2022-09-16 11:30:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:53,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:53,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:53,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:53,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130031014] [2022-09-16 11:30:53,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130031014] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:53,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:53,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:30:53,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120784710] [2022-09-16 11:30:53,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:53,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:30:53,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:30:53,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:30:53,824 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:53,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 665 transitions, 12146 flow. Second operand has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:53,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:53,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:53,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:30:56,866 INFO L130 PetriNetUnfolder]: 4893/13080 cut-off events. [2022-09-16 11:30:56,866 INFO L131 PetriNetUnfolder]: For 164487/165083 co-relation queries the response was YES. [2022-09-16 11:30:56,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62037 conditions, 13080 events. 4893/13080 cut-off events. For 164487/165083 co-relation queries the response was YES. Maximal size of possible extension queue 653. Compared 139899 event pairs, 1557 based on Foata normal form. 210/12695 useless extension candidates. Maximal degree in co-relation 61968. Up to 5666 conditions per place. [2022-09-16 11:30:57,010 INFO L137 encePairwiseOnDemand]: 207/225 looper letters, 342 selfloop transitions, 307 changer transitions 0/781 dead transitions. [2022-09-16 11:30:57,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 781 transitions, 14639 flow [2022-09-16 11:30:57,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:30:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:30:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1641 transitions. [2022-09-16 11:30:57,012 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7293333333333333 [2022-09-16 11:30:57,012 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1641 transitions. [2022-09-16 11:30:57,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1641 transitions. [2022-09-16 11:30:57,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:30:57,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1641 transitions. [2022-09-16 11:30:57,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 164.1) internal successors, (1641), 10 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:57,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 225.0) internal successors, (2475), 11 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:57,015 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 225.0) internal successors, (2475), 11 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:57,015 INFO L175 Difference]: Start difference. First operand has 328 places, 665 transitions, 12146 flow. Second operand 10 states and 1641 transitions. [2022-09-16 11:30:57,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 781 transitions, 14639 flow [2022-09-16 11:30:57,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 781 transitions, 14312 flow, removed 23 selfloop flow, removed 3 redundant places. [2022-09-16 11:30:57,559 INFO L231 Difference]: Finished difference. Result has 335 places, 675 transitions, 12821 flow [2022-09-16 11:30:57,559 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=11787, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=295, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12821, PETRI_PLACES=335, PETRI_TRANSITIONS=675} [2022-09-16 11:30:57,560 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 133 predicate places. [2022-09-16 11:30:57,560 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 675 transitions, 12821 flow [2022-09-16 11:30:57,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:57,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:30:57,560 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] [2022-09-16 11:30:57,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-09-16 11:30:57,560 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:30:57,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:30:57,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1361202774, now seen corresponding path program 2 times [2022-09-16 11:30:57,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:30:57,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741291143] [2022-09-16 11:30:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:30:57,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:30:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:30:57,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:30:57,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:30:57,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741291143] [2022-09-16 11:30:57,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741291143] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:30:57,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:30:57,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:30:57,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018257259] [2022-09-16 11:30:57,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:30:57,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:30:57,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:30:57,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:30:57,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:30:57,632 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:30:57,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 675 transitions, 12821 flow. Second operand has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:30:57,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:30:57,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:30:57,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:31:00,624 INFO L130 PetriNetUnfolder]: 5037/13526 cut-off events. [2022-09-16 11:31:00,625 INFO L131 PetriNetUnfolder]: For 181247/181983 co-relation queries the response was YES. [2022-09-16 11:31:00,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65276 conditions, 13526 events. 5037/13526 cut-off events. For 181247/181983 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 145982 event pairs, 1218 based on Foata normal form. 313/13242 useless extension candidates. Maximal degree in co-relation 65207. Up to 5332 conditions per place. [2022-09-16 11:31:00,876 INFO L137 encePairwiseOnDemand]: 209/225 looper letters, 312 selfloop transitions, 373 changer transitions 0/817 dead transitions. [2022-09-16 11:31:00,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 817 transitions, 16260 flow [2022-09-16 11:31:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:31:00,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:31:00,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1342 transitions. [2022-09-16 11:31:00,877 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7455555555555555 [2022-09-16 11:31:00,877 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1342 transitions. [2022-09-16 11:31:00,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1342 transitions. [2022-09-16 11:31:00,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:31:00,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1342 transitions. [2022-09-16 11:31:00,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 167.75) internal successors, (1342), 8 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:00,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 225.0) internal successors, (2025), 9 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:00,880 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 225.0) internal successors, (2025), 9 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:00,880 INFO L175 Difference]: Start difference. First operand has 335 places, 675 transitions, 12821 flow. Second operand 8 states and 1342 transitions. [2022-09-16 11:31:00,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 817 transitions, 16260 flow [2022-09-16 11:31:01,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 817 transitions, 15767 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-09-16 11:31:01,419 INFO L231 Difference]: Finished difference. Result has 338 places, 731 transitions, 14855 flow [2022-09-16 11:31:01,420 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=12369, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=14855, PETRI_PLACES=338, PETRI_TRANSITIONS=731} [2022-09-16 11:31:01,420 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 136 predicate places. [2022-09-16 11:31:01,420 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 731 transitions, 14855 flow [2022-09-16 11:31:01,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:01,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:31:01,421 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] [2022-09-16 11:31:01,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-09-16 11:31:01,421 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:31:01,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:31:01,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1361171989, now seen corresponding path program 1 times [2022-09-16 11:31:01,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:31:01,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388396343] [2022-09-16 11:31:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:31:01,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:31:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:31:01,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:31:01,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:31:01,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388396343] [2022-09-16 11:31:01,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388396343] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:31:01,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:31:01,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:31:01,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239212129] [2022-09-16 11:31:01,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:31:01,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:31:01,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:31:01,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:31:01,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:31:01,493 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:31:01,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 731 transitions, 14855 flow. Second operand has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:01,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:31:01,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:31:01,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:31:04,892 INFO L130 PetriNetUnfolder]: 5325/14319 cut-off events. [2022-09-16 11:31:04,893 INFO L131 PetriNetUnfolder]: For 225254/226140 co-relation queries the response was YES. [2022-09-16 11:31:05,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73129 conditions, 14319 events. 5325/14319 cut-off events. For 225254/226140 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 156750 event pairs, 1243 based on Foata normal form. 404/14135 useless extension candidates. Maximal degree in co-relation 73056. Up to 5202 conditions per place. [2022-09-16 11:31:05,116 INFO L137 encePairwiseOnDemand]: 207/225 looper letters, 346 selfloop transitions, 435 changer transitions 0/913 dead transitions. [2022-09-16 11:31:05,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 913 transitions, 19863 flow [2022-09-16 11:31:05,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:31:05,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-16 11:31:05,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1492 transitions. [2022-09-16 11:31:05,118 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7367901234567901 [2022-09-16 11:31:05,118 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1492 transitions. [2022-09-16 11:31:05,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1492 transitions. [2022-09-16 11:31:05,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:31:05,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1492 transitions. [2022-09-16 11:31:05,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 165.77777777777777) internal successors, (1492), 9 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:05,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:05,121 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 225.0) internal successors, (2250), 10 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:05,121 INFO L175 Difference]: Start difference. First operand has 338 places, 731 transitions, 14855 flow. Second operand 9 states and 1492 transitions. [2022-09-16 11:31:05,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 913 transitions, 19863 flow [2022-09-16 11:31:06,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 913 transitions, 19549 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-09-16 11:31:06,099 INFO L231 Difference]: Finished difference. Result has 349 places, 850 transitions, 19159 flow [2022-09-16 11:31:06,100 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=14581, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19159, PETRI_PLACES=349, PETRI_TRANSITIONS=850} [2022-09-16 11:31:06,100 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 147 predicate places. [2022-09-16 11:31:06,100 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 850 transitions, 19159 flow [2022-09-16 11:31:06,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:06,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:31:06,101 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] [2022-09-16 11:31:06,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-09-16 11:31:06,101 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:31:06,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:31:06,102 INFO L85 PathProgramCache]: Analyzing trace with hash 392703143, now seen corresponding path program 2 times [2022-09-16 11:31:06,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:31:06,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383730885] [2022-09-16 11:31:06,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:31:06,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:31:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:31:06,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:31:06,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:31:06,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383730885] [2022-09-16 11:31:06,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383730885] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:31:06,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:31:06,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:31:06,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657111685] [2022-09-16 11:31:06,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:31:06,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:31:06,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:31:06,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:31:06,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:31:06,209 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:31:06,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 850 transitions, 19159 flow. Second operand has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:06,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:31:06,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:31:06,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:31:10,145 INFO L130 PetriNetUnfolder]: 5355/14531 cut-off events. [2022-09-16 11:31:10,145 INFO L131 PetriNetUnfolder]: For 273696/274733 co-relation queries the response was YES. [2022-09-16 11:31:10,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75979 conditions, 14531 events. 5355/14531 cut-off events. For 273696/274733 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 159958 event pairs, 1280 based on Foata normal form. 473/14424 useless extension candidates. Maximal degree in co-relation 75902. Up to 4929 conditions per place. [2022-09-16 11:31:10,381 INFO L137 encePairwiseOnDemand]: 209/225 looper letters, 306 selfloop transitions, 504 changer transitions 0/942 dead transitions. [2022-09-16 11:31:10,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 942 transitions, 22105 flow [2022-09-16 11:31:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:31:10,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:31:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1777 transitions. [2022-09-16 11:31:10,383 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7179797979797979 [2022-09-16 11:31:10,383 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1777 transitions. [2022-09-16 11:31:10,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1777 transitions. [2022-09-16 11:31:10,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:31:10,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1777 transitions. [2022-09-16 11:31:10,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 161.54545454545453) internal successors, (1777), 11 states have internal predecessors, (1777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:10,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 225.0) internal successors, (2700), 12 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:10,389 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 225.0) internal successors, (2700), 12 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:10,389 INFO L175 Difference]: Start difference. First operand has 349 places, 850 transitions, 19159 flow. Second operand 11 states and 1777 transitions. [2022-09-16 11:31:10,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 942 transitions, 22105 flow [2022-09-16 11:31:11,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 942 transitions, 21897 flow, removed 104 selfloop flow, removed 0 redundant places. [2022-09-16 11:31:11,636 INFO L231 Difference]: Finished difference. Result has 362 places, 883 transitions, 21129 flow [2022-09-16 11:31:11,637 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=18973, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=473, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21129, PETRI_PLACES=362, PETRI_TRANSITIONS=883} [2022-09-16 11:31:11,637 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 160 predicate places. [2022-09-16 11:31:11,637 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 883 transitions, 21129 flow [2022-09-16 11:31:11,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:11,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:31:11,638 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] [2022-09-16 11:31:11,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-09-16 11:31:11,638 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:31:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:31:11,638 INFO L85 PathProgramCache]: Analyzing trace with hash -263720273, now seen corresponding path program 1 times [2022-09-16 11:31:11,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:31:11,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604135725] [2022-09-16 11:31:11,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:31:11,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:31:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:31:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:31:11,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:31:11,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604135725] [2022-09-16 11:31:11,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604135725] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:31:11,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:31:11,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:31:11,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147330260] [2022-09-16 11:31:11,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:31:11,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:31:11,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:31:11,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:31:11,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:31:11,745 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:31:11,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 883 transitions, 21129 flow. Second operand has 8 states, 8 states have (on average 146.625) internal successors, (1173), 8 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:11,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:31:11,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:31:11,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:31:15,899 INFO L130 PetriNetUnfolder]: 5369/14393 cut-off events. [2022-09-16 11:31:15,900 INFO L131 PetriNetUnfolder]: For 299231/300093 co-relation queries the response was YES. [2022-09-16 11:31:16,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78545 conditions, 14393 events. 5369/14393 cut-off events. For 299231/300093 co-relation queries the response was YES. Maximal size of possible extension queue 674. Compared 157602 event pairs, 1594 based on Foata normal form. 294/14101 useless extension candidates. Maximal degree in co-relation 78464. Up to 7142 conditions per place. [2022-09-16 11:31:16,121 INFO L137 encePairwiseOnDemand]: 209/225 looper letters, 572 selfloop transitions, 322 changer transitions 0/1026 dead transitions. [2022-09-16 11:31:16,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1026 transitions, 24597 flow [2022-09-16 11:31:16,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:31:16,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:31:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1813 transitions. [2022-09-16 11:31:16,123 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7325252525252526 [2022-09-16 11:31:16,123 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1813 transitions. [2022-09-16 11:31:16,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1813 transitions. [2022-09-16 11:31:16,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:31:16,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1813 transitions. [2022-09-16 11:31:16,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 164.8181818181818) internal successors, (1813), 11 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:16,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 225.0) internal successors, (2700), 12 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:16,127 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 225.0) internal successors, (2700), 12 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:16,127 INFO L175 Difference]: Start difference. First operand has 362 places, 883 transitions, 21129 flow. Second operand 11 states and 1813 transitions. [2022-09-16 11:31:16,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1026 transitions, 24597 flow [2022-09-16 11:31:17,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 1026 transitions, 24164 flow, removed 126 selfloop flow, removed 1 redundant places. [2022-09-16 11:31:17,602 INFO L231 Difference]: Finished difference. Result has 374 places, 918 transitions, 22312 flow [2022-09-16 11:31:17,603 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=20389, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=870, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=22312, PETRI_PLACES=374, PETRI_TRANSITIONS=918} [2022-09-16 11:31:17,603 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 172 predicate places. [2022-09-16 11:31:17,603 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 918 transitions, 22312 flow [2022-09-16 11:31:17,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 146.625) internal successors, (1173), 8 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:17,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:31:17,604 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] [2022-09-16 11:31:17,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-09-16 11:31:17,604 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:31:17,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:31:17,604 INFO L85 PathProgramCache]: Analyzing trace with hash 216653072, now seen corresponding path program 1 times [2022-09-16 11:31:17,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:31:17,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892398675] [2022-09-16 11:31:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:31:17,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:31:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:31:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:31:17,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:31:17,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892398675] [2022-09-16 11:31:17,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892398675] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:31:17,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:31:17,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-16 11:31:17,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157296609] [2022-09-16 11:31:17,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:31:17,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:31:17,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:31:17,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:31:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:31:17,710 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 225 [2022-09-16 11:31:17,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 918 transitions, 22312 flow. Second operand has 10 states, 10 states have (on average 136.7) internal successors, (1367), 10 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:17,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:31:17,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 225 [2022-09-16 11:31:17,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:31:23,408 INFO L130 PetriNetUnfolder]: 7842/19623 cut-off events. [2022-09-16 11:31:23,408 INFO L131 PetriNetUnfolder]: For 442027/443146 co-relation queries the response was YES. [2022-09-16 11:31:23,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107497 conditions, 19623 events. 7842/19623 cut-off events. For 442027/443146 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 215580 event pairs, 1773 based on Foata normal form. 535/19137 useless extension candidates. Maximal degree in co-relation 107412. Up to 5846 conditions per place. [2022-09-16 11:31:23,690 INFO L137 encePairwiseOnDemand]: 209/225 looper letters, 736 selfloop transitions, 390 changer transitions 1/1239 dead transitions. [2022-09-16 11:31:23,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 1239 transitions, 31431 flow [2022-09-16 11:31:23,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:31:23,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:31:23,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1860 transitions. [2022-09-16 11:31:23,692 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2022-09-16 11:31:23,693 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1860 transitions. [2022-09-16 11:31:23,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1860 transitions. [2022-09-16 11:31:23,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:31:23,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1860 transitions. [2022-09-16 11:31:23,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 155.0) internal successors, (1860), 12 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:23,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 225.0) internal successors, (2925), 13 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:23,698 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 225.0) internal successors, (2925), 13 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:23,698 INFO L175 Difference]: Start difference. First operand has 374 places, 918 transitions, 22312 flow. Second operand 12 states and 1860 transitions. [2022-09-16 11:31:23,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 1239 transitions, 31431 flow [2022-09-16 11:31:25,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 1239 transitions, 30845 flow, removed 102 selfloop flow, removed 5 redundant places. [2022-09-16 11:31:25,994 INFO L231 Difference]: Finished difference. Result has 385 places, 1046 transitions, 27745 flow [2022-09-16 11:31:25,995 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=21863, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=916, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=27745, PETRI_PLACES=385, PETRI_TRANSITIONS=1046} [2022-09-16 11:31:25,995 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 183 predicate places. [2022-09-16 11:31:25,995 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 1046 transitions, 27745 flow [2022-09-16 11:31:25,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 136.7) internal successors, (1367), 10 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:25,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:31:25,996 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] [2022-09-16 11:31:25,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-09-16 11:31:25,996 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting qrcu_updaterErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:31:25,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:31:25,996 INFO L85 PathProgramCache]: Analyzing trace with hash -436066621, now seen corresponding path program 1 times [2022-09-16 11:31:25,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:31:25,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989223001] [2022-09-16 11:31:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:31:25,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:31:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:31:26,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:31:26,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:31:26,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989223001] [2022-09-16 11:31:26,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989223001] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:31:26,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:31:26,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:31:26,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243030524] [2022-09-16 11:31:26,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:31:26,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:31:26,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:31:26,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:31:26,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:31:26,056 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 225 [2022-09-16 11:31:26,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 1046 transitions, 27745 flow. Second operand has 7 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:26,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:31:26,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 225 [2022-09-16 11:31:26,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:31:31,358 INFO L130 PetriNetUnfolder]: 6549/16753 cut-off events. [2022-09-16 11:31:31,359 INFO L131 PetriNetUnfolder]: For 394717/395889 co-relation queries the response was YES. [2022-09-16 11:31:31,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96954 conditions, 16753 events. 6549/16753 cut-off events. For 394717/395889 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 181231 event pairs, 1399 based on Foata normal form. 554/16369 useless extension candidates. Maximal degree in co-relation 96864. Up to 3872 conditions per place. [2022-09-16 11:31:31,703 INFO L137 encePairwiseOnDemand]: 215/225 looper letters, 564 selfloop transitions, 191 changer transitions 0/1195 dead transitions. [2022-09-16 11:31:31,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 1195 transitions, 31403 flow [2022-09-16 11:31:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:31:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:31:31,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1379 transitions. [2022-09-16 11:31:31,705 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7661111111111111 [2022-09-16 11:31:31,705 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1379 transitions. [2022-09-16 11:31:31,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1379 transitions. [2022-09-16 11:31:31,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:31:31,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1379 transitions. [2022-09-16 11:31:31,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.375) internal successors, (1379), 8 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:31,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 225.0) internal successors, (2025), 9 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:31,708 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 225.0) internal successors, (2025), 9 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:31,708 INFO L175 Difference]: Start difference. First operand has 385 places, 1046 transitions, 27745 flow. Second operand 8 states and 1379 transitions. [2022-09-16 11:31:31,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 1195 transitions, 31403 flow [2022-09-16 11:31:33,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1195 transitions, 31274 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-09-16 11:31:33,544 INFO L231 Difference]: Finished difference. Result has 390 places, 1062 transitions, 28602 flow [2022-09-16 11:31:33,545 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=27627, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1046, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=869, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=28602, PETRI_PLACES=390, PETRI_TRANSITIONS=1062} [2022-09-16 11:31:33,545 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 188 predicate places. [2022-09-16 11:31:33,545 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 1062 transitions, 28602 flow [2022-09-16 11:31:33,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:33,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:31:33,546 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] [2022-09-16 11:31:33,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-09-16 11:31:33,546 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting qrcu_updaterErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:31:33,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:31:33,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1847190416, now seen corresponding path program 1 times [2022-09-16 11:31:33,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:31:33,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875613100] [2022-09-16 11:31:33,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:31:33,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:31:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:31:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:31:33,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:31:33,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875613100] [2022-09-16 11:31:33,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875613100] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:31:33,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:31:33,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:31:33,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945356778] [2022-09-16 11:31:33,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:31:33,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:31:33,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:31:33,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:31:33,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:31:33,604 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 225 [2022-09-16 11:31:33,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 1062 transitions, 28602 flow. Second operand has 7 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:33,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:31:33,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 225 [2022-09-16 11:31:33,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:31:38,809 INFO L130 PetriNetUnfolder]: 6622/17060 cut-off events. [2022-09-16 11:31:38,809 INFO L131 PetriNetUnfolder]: For 411765/412969 co-relation queries the response was YES. [2022-09-16 11:31:38,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98507 conditions, 17060 events. 6622/17060 cut-off events. For 411765/412969 co-relation queries the response was YES. Maximal size of possible extension queue 709. Compared 186766 event pairs, 1569 based on Foata normal form. 503/16632 useless extension candidates. Maximal degree in co-relation 98416. Up to 3885 conditions per place. [2022-09-16 11:31:39,081 INFO L137 encePairwiseOnDemand]: 215/225 looper letters, 538 selfloop transitions, 237 changer transitions 0/1215 dead transitions. [2022-09-16 11:31:39,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 1215 transitions, 32242 flow [2022-09-16 11:31:39,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:31:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:31:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1377 transitions. [2022-09-16 11:31:39,082 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.765 [2022-09-16 11:31:39,082 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1377 transitions. [2022-09-16 11:31:39,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1377 transitions. [2022-09-16 11:31:39,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:31:39,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1377 transitions. [2022-09-16 11:31:39,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.125) internal successors, (1377), 8 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:39,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 225.0) internal successors, (2025), 9 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:39,086 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 225.0) internal successors, (2025), 9 states have internal predecessors, (2025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:39,086 INFO L175 Difference]: Start difference. First operand has 390 places, 1062 transitions, 28602 flow. Second operand 8 states and 1377 transitions. [2022-09-16 11:31:39,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 1215 transitions, 32242 flow [2022-09-16 11:31:41,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 1215 transitions, 32116 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:31:41,143 INFO L231 Difference]: Finished difference. Result has 398 places, 1086 transitions, 29878 flow [2022-09-16 11:31:41,143 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=28476, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1062, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=847, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=29878, PETRI_PLACES=398, PETRI_TRANSITIONS=1086} [2022-09-16 11:31:41,144 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 196 predicate places. [2022-09-16 11:31:41,144 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 1086 transitions, 29878 flow [2022-09-16 11:31:41,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.28571428571428) internal successors, (1094), 7 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:41,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:31:41,144 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] [2022-09-16 11:31:41,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-09-16 11:31:41,145 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:31:41,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:31:41,145 INFO L85 PathProgramCache]: Analyzing trace with hash -100094430, now seen corresponding path program 1 times [2022-09-16 11:31:41,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:31:41,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62373543] [2022-09-16 11:31:41,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:31:41,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:31:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:31:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:31:41,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:31:41,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62373543] [2022-09-16 11:31:41,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62373543] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:31:41,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:31:41,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:31:41,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599385557] [2022-09-16 11:31:41,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:31:41,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:31:41,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:31:41,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:31:41,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:31:41,280 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 225 [2022-09-16 11:31:41,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 1086 transitions, 29878 flow. Second operand has 11 states, 11 states have (on average 136.54545454545453) internal successors, (1502), 11 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:41,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:31:41,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 225 [2022-09-16 11:31:41,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:31:47,860 INFO L130 PetriNetUnfolder]: 7845/19646 cut-off events. [2022-09-16 11:31:47,860 INFO L131 PetriNetUnfolder]: For 502186/503188 co-relation queries the response was YES. [2022-09-16 11:31:48,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115509 conditions, 19646 events. 7845/19646 cut-off events. For 502186/503188 co-relation queries the response was YES. Maximal size of possible extension queue 789. Compared 216133 event pairs, 1451 based on Foata normal form. 347/19046 useless extension candidates. Maximal degree in co-relation 115415. Up to 4597 conditions per place. [2022-09-16 11:31:48,228 INFO L137 encePairwiseOnDemand]: 200/225 looper letters, 867 selfloop transitions, 475 changer transitions 2/1458 dead transitions. [2022-09-16 11:31:48,228 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 1458 transitions, 37526 flow [2022-09-16 11:31:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-16 11:31:48,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-16 11:31:48,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2656 transitions. [2022-09-16 11:31:48,231 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6943790849673203 [2022-09-16 11:31:48,231 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2656 transitions. [2022-09-16 11:31:48,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2656 transitions. [2022-09-16 11:31:48,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:31:48,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2656 transitions. [2022-09-16 11:31:48,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 156.23529411764707) internal successors, (2656), 17 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:48,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 225.0) internal successors, (4050), 18 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:48,238 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 225.0) internal successors, (4050), 18 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:48,238 INFO L175 Difference]: Start difference. First operand has 398 places, 1086 transitions, 29878 flow. Second operand 17 states and 2656 transitions. [2022-09-16 11:31:48,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 1458 transitions, 37526 flow [2022-09-16 11:31:50,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 1458 transitions, 37095 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-09-16 11:31:50,811 INFO L231 Difference]: Finished difference. Result has 418 places, 1162 transitions, 32924 flow [2022-09-16 11:31:50,812 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=29305, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1080, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=639, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=32924, PETRI_PLACES=418, PETRI_TRANSITIONS=1162} [2022-09-16 11:31:50,813 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 216 predicate places. [2022-09-16 11:31:50,813 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 1162 transitions, 32924 flow [2022-09-16 11:31:50,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 136.54545454545453) internal successors, (1502), 11 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:50,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:31:50,813 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] [2022-09-16 11:31:50,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-09-16 11:31:50,813 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:31:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:31:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash -730338743, now seen corresponding path program 1 times [2022-09-16 11:31:50,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:31:50,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207668359] [2022-09-16 11:31:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:31:50,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:31:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:31:50,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:31:50,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:31:50,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207668359] [2022-09-16 11:31:50,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207668359] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:31:50,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:31:50,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-16 11:31:50,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619221676] [2022-09-16 11:31:50,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:31:50,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:31:50,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:31:50,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:31:50,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:31:50,959 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 225 [2022-09-16 11:31:50,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 1162 transitions, 32924 flow. Second operand has 12 states, 12 states have (on average 135.5) internal successors, (1626), 12 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:50,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:31:50,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 225 [2022-09-16 11:31:50,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:31:58,835 INFO L130 PetriNetUnfolder]: 8595/22023 cut-off events. [2022-09-16 11:31:58,835 INFO L131 PetriNetUnfolder]: For 586797/588176 co-relation queries the response was YES. [2022-09-16 11:31:59,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127961 conditions, 22023 events. 8595/22023 cut-off events. For 586797/588176 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 249469 event pairs, 1616 based on Foata normal form. 683/21629 useless extension candidates. Maximal degree in co-relation 127859. Up to 4741 conditions per place. [2022-09-16 11:31:59,203 INFO L137 encePairwiseOnDemand]: 208/225 looper letters, 1153 selfloop transitions, 338 changer transitions 4/1608 dead transitions. [2022-09-16 11:31:59,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 1608 transitions, 41673 flow [2022-09-16 11:31:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 11:31:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-16 11:31:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3227 transitions. [2022-09-16 11:31:59,206 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.682962962962963 [2022-09-16 11:31:59,206 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3227 transitions. [2022-09-16 11:31:59,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3227 transitions. [2022-09-16 11:31:59,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:31:59,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3227 transitions. [2022-09-16 11:31:59,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 153.66666666666666) internal successors, (3227), 21 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:59,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 225.0) internal successors, (4950), 22 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:59,213 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 225.0) internal successors, (4950), 22 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:31:59,214 INFO L175 Difference]: Start difference. First operand has 418 places, 1162 transitions, 32924 flow. Second operand 21 states and 3227 transitions. [2022-09-16 11:31:59,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 1608 transitions, 41673 flow [2022-09-16 11:32:02,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 1608 transitions, 41567 flow, removed 38 selfloop flow, removed 3 redundant places. [2022-09-16 11:32:02,444 INFO L231 Difference]: Finished difference. Result has 441 places, 1219 transitions, 35403 flow [2022-09-16 11:32:02,446 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=32836, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=860, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=35403, PETRI_PLACES=441, PETRI_TRANSITIONS=1219} [2022-09-16 11:32:02,446 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 239 predicate places. [2022-09-16 11:32:02,446 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 1219 transitions, 35403 flow [2022-09-16 11:32:02,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.5) internal successors, (1626), 12 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:02,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:32:02,447 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] [2022-09-16 11:32:02,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-09-16 11:32:02,447 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:32:02,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:32:02,447 INFO L85 PathProgramCache]: Analyzing trace with hash 68284606, now seen corresponding path program 1 times [2022-09-16 11:32:02,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:32:02,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657934840] [2022-09-16 11:32:02,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:32:02,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:32:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:32:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:32:02,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:32:02,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657934840] [2022-09-16 11:32:02,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657934840] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:32:02,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:32:02,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:32:02,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684537878] [2022-09-16 11:32:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:32:02,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:32:02,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:32:02,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:32:02,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:32:02,534 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:32:02,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 1219 transitions, 35403 flow. Second operand has 9 states, 9 states have (on average 146.55555555555554) internal successors, (1319), 9 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:02,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:32:02,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:32:02,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:32:09,003 INFO L130 PetriNetUnfolder]: 6225/17276 cut-off events. [2022-09-16 11:32:09,004 INFO L131 PetriNetUnfolder]: For 539607/541044 co-relation queries the response was YES. [2022-09-16 11:32:09,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108916 conditions, 17276 events. 6225/17276 cut-off events. For 539607/541044 co-relation queries the response was YES. Maximal size of possible extension queue 784. Compared 200066 event pairs, 1339 based on Foata normal form. 724/17335 useless extension candidates. Maximal degree in co-relation 108808. Up to 5009 conditions per place. [2022-09-16 11:32:09,383 INFO L137 encePairwiseOnDemand]: 206/225 looper letters, 675 selfloop transitions, 563 changer transitions 0/1392 dead transitions. [2022-09-16 11:32:09,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 1392 transitions, 40159 flow [2022-09-16 11:32:09,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:32:09,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:32:09,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2419 transitions. [2022-09-16 11:32:09,385 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7167407407407408 [2022-09-16 11:32:09,386 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2419 transitions. [2022-09-16 11:32:09,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2419 transitions. [2022-09-16 11:32:09,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:32:09,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2419 transitions. [2022-09-16 11:32:09,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 161.26666666666668) internal successors, (2419), 15 states have internal predecessors, (2419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:09,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 225.0) internal successors, (3600), 16 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:09,391 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 225.0) internal successors, (3600), 16 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:09,391 INFO L175 Difference]: Start difference. First operand has 441 places, 1219 transitions, 35403 flow. Second operand 15 states and 2419 transitions. [2022-09-16 11:32:09,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 1392 transitions, 40159 flow [2022-09-16 11:32:11,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 1392 transitions, 39954 flow, removed 35 selfloop flow, removed 8 redundant places. [2022-09-16 11:32:11,969 INFO L231 Difference]: Finished difference. Result has 452 places, 1253 transitions, 37738 flow [2022-09-16 11:32:11,970 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=35066, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=526, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=680, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=37738, PETRI_PLACES=452, PETRI_TRANSITIONS=1253} [2022-09-16 11:32:11,971 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 250 predicate places. [2022-09-16 11:32:11,971 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 1253 transitions, 37738 flow [2022-09-16 11:32:11,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 146.55555555555554) internal successors, (1319), 9 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:11,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:32:11,971 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] [2022-09-16 11:32:11,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-09-16 11:32:11,972 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:32:11,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:32:11,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1851715474, now seen corresponding path program 2 times [2022-09-16 11:32:11,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:32:11,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520766938] [2022-09-16 11:32:11,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:32:11,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:32:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:32:12,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:32:12,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:32:12,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520766938] [2022-09-16 11:32:12,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520766938] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:32:12,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:32:12,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:32:12,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713801932] [2022-09-16 11:32:12,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:32:12,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:32:12,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:32:12,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:32:12,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:32:12,109 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 225 [2022-09-16 11:32:12,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 1253 transitions, 37738 flow. Second operand has 9 states, 9 states have (on average 136.88888888888889) internal successors, (1232), 9 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:12,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:32:12,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 225 [2022-09-16 11:32:12,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:32:20,894 INFO L130 PetriNetUnfolder]: 8913/22606 cut-off events. [2022-09-16 11:32:20,895 INFO L131 PetriNetUnfolder]: For 732058/733310 co-relation queries the response was YES. [2022-09-16 11:32:21,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142746 conditions, 22606 events. 8913/22606 cut-off events. For 732058/733310 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 258507 event pairs, 1603 based on Foata normal form. 542/22193 useless extension candidates. Maximal degree in co-relation 142634. Up to 4636 conditions per place. [2022-09-16 11:32:21,560 INFO L137 encePairwiseOnDemand]: 205/225 looper letters, 880 selfloop transitions, 713 changer transitions 0/1707 dead transitions. [2022-09-16 11:32:21,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 1707 transitions, 48800 flow [2022-09-16 11:32:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:32:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 11:32:21,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2346 transitions. [2022-09-16 11:32:21,562 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6951111111111111 [2022-09-16 11:32:21,562 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2346 transitions. [2022-09-16 11:32:21,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2346 transitions. [2022-09-16 11:32:21,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:32:21,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2346 transitions. [2022-09-16 11:32:21,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 156.4) internal successors, (2346), 15 states have internal predecessors, (2346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:21,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 225.0) internal successors, (3600), 16 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:21,566 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 225.0) internal successors, (3600), 16 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:21,566 INFO L175 Difference]: Start difference. First operand has 452 places, 1253 transitions, 37738 flow. Second operand 15 states and 2346 transitions. [2022-09-16 11:32:21,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 1707 transitions, 48800 flow [2022-09-16 11:32:25,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 1707 transitions, 46954 flow, removed 207 selfloop flow, removed 9 redundant places. [2022-09-16 11:32:25,273 INFO L231 Difference]: Finished difference. Result has 462 places, 1369 transitions, 41283 flow [2022-09-16 11:32:25,274 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=35990, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=597, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=626, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=41283, PETRI_PLACES=462, PETRI_TRANSITIONS=1369} [2022-09-16 11:32:25,275 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 260 predicate places. [2022-09-16 11:32:25,275 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1369 transitions, 41283 flow [2022-09-16 11:32:25,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 136.88888888888889) internal successors, (1232), 9 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:25,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:32:25,275 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] [2022-09-16 11:32:25,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-09-16 11:32:25,276 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:32:25,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:32:25,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1359677900, now seen corresponding path program 2 times [2022-09-16 11:32:25,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:32:25,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601034995] [2022-09-16 11:32:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:32:25,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:32:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:32:25,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:32:25,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:32:25,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601034995] [2022-09-16 11:32:25,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601034995] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:32:25,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:32:25,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:32:25,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208146671] [2022-09-16 11:32:25,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:32:25,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:32:25,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:32:25,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:32:25,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:32:25,348 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 225 [2022-09-16 11:32:25,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1369 transitions, 41283 flow. Second operand has 8 states, 8 states have (on average 146.75) internal successors, (1174), 8 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:25,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:32:25,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 225 [2022-09-16 11:32:25,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:32:33,665 INFO L130 PetriNetUnfolder]: 6757/19319 cut-off events. [2022-09-16 11:32:33,666 INFO L131 PetriNetUnfolder]: For 654569/656384 co-relation queries the response was YES. [2022-09-16 11:32:34,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123493 conditions, 19319 events. 6757/19319 cut-off events. For 654569/656384 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 231535 event pairs, 1387 based on Foata normal form. 800/19435 useless extension candidates. Maximal degree in co-relation 123375. Up to 6068 conditions per place. [2022-09-16 11:32:34,295 INFO L137 encePairwiseOnDemand]: 208/225 looper letters, 647 selfloop transitions, 666 changer transitions 0/1474 dead transitions. [2022-09-16 11:32:34,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1474 transitions, 45886 flow [2022-09-16 11:32:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:32:34,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:32:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1929 transitions. [2022-09-16 11:32:34,300 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7144444444444444 [2022-09-16 11:32:34,300 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1929 transitions. [2022-09-16 11:32:34,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1929 transitions. [2022-09-16 11:32:34,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:32:34,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1929 transitions. [2022-09-16 11:32:34,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 160.75) internal successors, (1929), 12 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:34,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 225.0) internal successors, (2925), 13 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:34,310 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 225.0) internal successors, (2925), 13 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:34,311 INFO L175 Difference]: Start difference. First operand has 462 places, 1369 transitions, 41283 flow. Second operand 12 states and 1929 transitions. [2022-09-16 11:32:34,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 1474 transitions, 45886 flow [2022-09-16 11:32:37,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 1474 transitions, 45238 flow, removed 111 selfloop flow, removed 4 redundant places. [2022-09-16 11:32:37,924 INFO L231 Difference]: Finished difference. Result has 472 places, 1406 transitions, 43735 flow [2022-09-16 11:32:37,925 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=40627, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=629, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=727, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=43735, PETRI_PLACES=472, PETRI_TRANSITIONS=1406} [2022-09-16 11:32:37,926 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 270 predicate places. [2022-09-16 11:32:37,926 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 1406 transitions, 43735 flow [2022-09-16 11:32:37,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 146.75) internal successors, (1174), 8 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:37,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:32:37,926 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] [2022-09-16 11:32:37,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-09-16 11:32:37,926 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting qrcu_updaterErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:32:37,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:32:37,927 INFO L85 PathProgramCache]: Analyzing trace with hash -18591447, now seen corresponding path program 2 times [2022-09-16 11:32:37,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:32:37,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444097393] [2022-09-16 11:32:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:32:37,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:32:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:32:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:32:38,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:32:38,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444097393] [2022-09-16 11:32:38,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444097393] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:32:38,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:32:38,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-16 11:32:38,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798133798] [2022-09-16 11:32:38,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:32:38,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:32:38,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:32:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:32:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:32:38,076 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 225 [2022-09-16 11:32:38,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 1406 transitions, 43735 flow. Second operand has 12 states, 12 states have (on average 135.5) internal successors, (1626), 12 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:38,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:32:38,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 225 [2022-09-16 11:32:38,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:32:49,873 INFO L130 PetriNetUnfolder]: 9374/24063 cut-off events. [2022-09-16 11:32:49,873 INFO L131 PetriNetUnfolder]: For 844722/846214 co-relation queries the response was YES. [2022-09-16 11:32:50,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152173 conditions, 24063 events. 9374/24063 cut-off events. For 844722/846214 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 277092 event pairs, 1581 based on Foata normal form. 732/23612 useless extension candidates. Maximal degree in co-relation 152053. Up to 4741 conditions per place. [2022-09-16 11:32:50,822 INFO L137 encePairwiseOnDemand]: 208/225 looper letters, 942 selfloop transitions, 655 changer transitions 4/1714 dead transitions. [2022-09-16 11:32:50,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1714 transitions, 50303 flow [2022-09-16 11:32:50,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:32:50,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:32:50,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3353 transitions. [2022-09-16 11:32:50,826 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6773737373737374 [2022-09-16 11:32:50,826 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3353 transitions. [2022-09-16 11:32:50,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3353 transitions. [2022-09-16 11:32:50,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:32:50,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3353 transitions. [2022-09-16 11:32:50,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 152.4090909090909) internal successors, (3353), 22 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:50,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 225.0) internal successors, (5175), 23 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:50,833 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 225.0) internal successors, (5175), 23 states have internal predecessors, (5175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:50,834 INFO L175 Difference]: Start difference. First operand has 472 places, 1406 transitions, 43735 flow. Second operand 22 states and 3353 transitions. [2022-09-16 11:32:50,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1714 transitions, 50303 flow [2022-09-16 11:32:56,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 1714 transitions, 49135 flow, removed 99 selfloop flow, removed 10 redundant places. [2022-09-16 11:32:56,151 INFO L231 Difference]: Finished difference. Result has 481 places, 1404 transitions, 43887 flow [2022-09-16 11:32:56,152 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=42577, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=655, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=749, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=43887, PETRI_PLACES=481, PETRI_TRANSITIONS=1404} [2022-09-16 11:32:56,153 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 279 predicate places. [2022-09-16 11:32:56,153 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 1404 transitions, 43887 flow [2022-09-16 11:32:56,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 135.5) internal successors, (1626), 12 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:56,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:32:56,153 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] [2022-09-16 11:32:56,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-09-16 11:32:56,154 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:32:56,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:32:56,155 INFO L85 PathProgramCache]: Analyzing trace with hash -220620839, now seen corresponding path program 1 times [2022-09-16 11:32:56,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:32:56,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73681938] [2022-09-16 11:32:56,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:32:56,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:32:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:32:56,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:32:56,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:32:56,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73681938] [2022-09-16 11:32:56,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73681938] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:32:56,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:32:56,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:32:56,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433686435] [2022-09-16 11:32:56,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:32:56,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:32:56,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:32:56,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:32:56,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:32:56,247 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 225 [2022-09-16 11:32:56,247 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 1404 transitions, 43887 flow. Second operand has 9 states, 9 states have (on average 136.11111111111111) internal successors, (1225), 9 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:32:56,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:32:56,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 225 [2022-09-16 11:32:56,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:33:12,212 INFO L130 PetriNetUnfolder]: 13491/36130 cut-off events. [2022-09-16 11:33:12,212 INFO L131 PetriNetUnfolder]: For 1403778/1406064 co-relation queries the response was YES. [2022-09-16 11:33:13,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241212 conditions, 36130 events. 13491/36130 cut-off events. For 1403778/1406064 co-relation queries the response was YES. Maximal size of possible extension queue 1788. Compared 460208 event pairs, 3286 based on Foata normal form. 666/35163 useless extension candidates. Maximal degree in co-relation 241096. Up to 6642 conditions per place. [2022-09-16 11:33:13,619 INFO L137 encePairwiseOnDemand]: 207/225 looper letters, 1652 selfloop transitions, 802 changer transitions 0/2567 dead transitions. [2022-09-16 11:33:13,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 2567 transitions, 85473 flow [2022-09-16 11:33:13,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:33:13,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:33:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1869 transitions. [2022-09-16 11:33:13,621 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6922222222222222 [2022-09-16 11:33:13,621 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1869 transitions. [2022-09-16 11:33:13,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1869 transitions. [2022-09-16 11:33:13,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:33:13,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1869 transitions. [2022-09-16 11:33:13,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 155.75) internal successors, (1869), 12 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:33:13,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 225.0) internal successors, (2925), 13 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:33:13,625 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 225.0) internal successors, (2925), 13 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:33:13,625 INFO L175 Difference]: Start difference. First operand has 481 places, 1404 transitions, 43887 flow. Second operand 12 states and 1869 transitions. [2022-09-16 11:33:13,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 2567 transitions, 85473 flow [2022-09-16 11:33:25,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 2567 transitions, 83613 flow, removed 20 selfloop flow, removed 13 redundant places. [2022-09-16 11:33:25,077 INFO L231 Difference]: Finished difference. Result has 487 places, 1932 transitions, 65787 flow [2022-09-16 11:33:25,078 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=42766, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=313, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=813, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=65787, PETRI_PLACES=487, PETRI_TRANSITIONS=1932} [2022-09-16 11:33:25,079 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 285 predicate places. [2022-09-16 11:33:25,079 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 1932 transitions, 65787 flow [2022-09-16 11:33:25,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 136.11111111111111) internal successors, (1225), 9 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:33:25,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:33:25,080 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] [2022-09-16 11:33:25,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-09-16 11:33:25,080 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:33:25,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:33:25,080 INFO L85 PathProgramCache]: Analyzing trace with hash 139389049, now seen corresponding path program 1 times [2022-09-16 11:33:25,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:33:25,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493841046] [2022-09-16 11:33:25,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:33:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:33:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:33:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:33:25,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:33:25,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493841046] [2022-09-16 11:33:25,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493841046] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:33:25,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:33:25,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:33:25,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715215582] [2022-09-16 11:33:25,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:33:25,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:33:25,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:33:25,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:33:25,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:33:25,117 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 225 [2022-09-16 11:33:25,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 1932 transitions, 65787 flow. Second operand has 4 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:33:25,117 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:33:25,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 225 [2022-09-16 11:33:25,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:33:38,372 INFO L130 PetriNetUnfolder]: 7383/25352 cut-off events. [2022-09-16 11:33:38,372 INFO L131 PetriNetUnfolder]: For 1012924/1015264 co-relation queries the response was YES. [2022-09-16 11:33:39,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172163 conditions, 25352 events. 7383/25352 cut-off events. For 1012924/1015264 co-relation queries the response was YES. Maximal size of possible extension queue 1222. Compared 339663 event pairs, 1692 based on Foata normal form. 995/25056 useless extension candidates. Maximal degree in co-relation 172040. Up to 6325 conditions per place. [2022-09-16 11:33:39,239 INFO L137 encePairwiseOnDemand]: 218/225 looper letters, 755 selfloop transitions, 22 changer transitions 0/1988 dead transitions. [2022-09-16 11:33:39,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1988 transitions, 67943 flow [2022-09-16 11:33:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:33:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:33:39,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 965 transitions. [2022-09-16 11:33:39,240 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8577777777777778 [2022-09-16 11:33:39,240 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 965 transitions. [2022-09-16 11:33:39,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 965 transitions. [2022-09-16 11:33:39,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:33:39,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 965 transitions. [2022-09-16 11:33:39,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 193.0) internal successors, (965), 5 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:33:39,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:33:39,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 225.0) internal successors, (1350), 6 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:33:39,243 INFO L175 Difference]: Start difference. First operand has 487 places, 1932 transitions, 65787 flow. Second operand 5 states and 965 transitions. [2022-09-16 11:33:39,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1988 transitions, 67943 flow [2022-09-16 11:33:45,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 1988 transitions, 67781 flow, removed 45 selfloop flow, removed 4 redundant places. [2022-09-16 11:33:45,719 INFO L231 Difference]: Finished difference. Result has 490 places, 1935 transitions, 65771 flow [2022-09-16 11:33:45,720 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=65626, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1932, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1912, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=65771, PETRI_PLACES=490, PETRI_TRANSITIONS=1935} [2022-09-16 11:33:45,721 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 288 predicate places. [2022-09-16 11:33:45,721 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 1935 transitions, 65771 flow [2022-09-16 11:33:45,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 180.5) internal successors, (722), 4 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:33:45,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:33:45,721 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, 1] [2022-09-16 11:33:45,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-09-16 11:33:45,721 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:33:45,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:33:45,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1086878767, now seen corresponding path program 2 times [2022-09-16 11:33:45,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:33:45,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278948560] [2022-09-16 11:33:45,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:33:45,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:33:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:33:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:33:45,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:33:45,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278948560] [2022-09-16 11:33:45,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278948560] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:33:45,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:33:45,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:33:45,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468687655] [2022-09-16 11:33:45,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:33:45,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:33:45,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:33:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:33:45,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:33:45,822 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 225 [2022-09-16 11:33:45,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 1935 transitions, 65771 flow. Second operand has 9 states, 9 states have (on average 136.11111111111111) internal successors, (1225), 9 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:33:45,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:33:45,823 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 225 [2022-09-16 11:33:45,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:34:06,847 INFO L130 PetriNetUnfolder]: 13356/35374 cut-off events. [2022-09-16 11:34:06,847 INFO L131 PetriNetUnfolder]: For 1453200/1455540 co-relation queries the response was YES. [2022-09-16 11:34:07,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250205 conditions, 35374 events. 13356/35374 cut-off events. For 1453200/1455540 co-relation queries the response was YES. Maximal size of possible extension queue 1767. Compared 446007 event pairs, 3694 based on Foata normal form. 507/34307 useless extension candidates. Maximal degree in co-relation 250079. Up to 11097 conditions per place. [2022-09-16 11:34:08,175 INFO L137 encePairwiseOnDemand]: 207/225 looper letters, 1314 selfloop transitions, 780 changer transitions 1/2208 dead transitions. [2022-09-16 11:34:08,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 2208 transitions, 75708 flow [2022-09-16 11:34:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:34:08,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:34:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1698 transitions. [2022-09-16 11:34:08,177 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.686060606060606 [2022-09-16 11:34:08,177 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1698 transitions. [2022-09-16 11:34:08,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1698 transitions. [2022-09-16 11:34:08,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:34:08,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1698 transitions. [2022-09-16 11:34:08,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 154.36363636363637) internal successors, (1698), 11 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:34:08,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 225.0) internal successors, (2700), 12 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:34:08,182 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 225.0) internal successors, (2700), 12 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:34:08,182 INFO L175 Difference]: Start difference. First operand has 490 places, 1935 transitions, 65771 flow. Second operand 11 states and 1698 transitions. [2022-09-16 11:34:08,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 2208 transitions, 75708 flow [2022-09-16 11:34:19,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 2208 transitions, 75695 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-09-16 11:34:19,742 INFO L231 Difference]: Finished difference. Result has 501 places, 1952 transitions, 68455 flow [2022-09-16 11:34:19,744 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=65742, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1933, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=761, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=68455, PETRI_PLACES=501, PETRI_TRANSITIONS=1952} [2022-09-16 11:34:19,745 INFO L287 CegarLoopForPetriNet]: 202 programPoint places, 299 predicate places. [2022-09-16 11:34:19,745 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 1952 transitions, 68455 flow [2022-09-16 11:34:19,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 136.11111111111111) internal successors, (1225), 9 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:34:19,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:34:19,745 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] [2022-09-16 11:34:19,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-09-16 11:34:19,745 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting qrcu_updaterErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [qrcu_reader1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, qrcu_reader1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:34:19,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:34:19,746 INFO L85 PathProgramCache]: Analyzing trace with hash -2116964351, now seen corresponding path program 3 times [2022-09-16 11:34:19,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:34:19,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122876711] [2022-09-16 11:34:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:34:19,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:34:19,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:34:19,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:34:19,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:34:19,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122876711] [2022-09-16 11:34:19,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122876711] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:34:19,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:34:19,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:34:19,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410068724] [2022-09-16 11:34:19,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:34:19,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:34:19,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:34:19,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:34:19,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:34:19,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 225 [2022-09-16 11:34:19,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 1952 transitions, 68455 flow. Second operand has 8 states, 8 states have (on average 136.375) internal successors, (1091), 8 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:34:19,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:34:19,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 225 [2022-09-16 11:34:19,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand