./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-atomic/qrcu-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-atomic/qrcu-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:16:47,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:16:47,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:16:47,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:16:47,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:16:47,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:16:47,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:16:47,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:16:47,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:16:47,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:16:47,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:16:47,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:16:47,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:16:47,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:16:47,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:16:47,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:16:47,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:16:47,550 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:16:47,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:16:47,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:16:47,560 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:16:47,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:16:47,562 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:16:47,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:16:47,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:16:47,569 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:16:47,569 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:16:47,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:16:47,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:16:47,571 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:16:47,572 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:16:47,572 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:16:47,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:16:47,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:16:47,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:16:47,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:16:47,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:16:47,576 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:16:47,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:16:47,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:16:47,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:16:47,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:16:47,581 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:16:47,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:16:47,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:16:47,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:16:47,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:16:47,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:16:47,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:16:47,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:16:47,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:16:47,618 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:16:47,619 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:16:47,619 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:16:47,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:16:47,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:16:47,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:16:47,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:16:47,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:16:47,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:16:47,621 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:16:47,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:16:47,621 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:16:47,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:16:47,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:16:47,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:16:47,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:16:47,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:16:47,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:16:47,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:16:47,623 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:16:47,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:16:47,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:16:47,624 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:16:47,624 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:16:47,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:16:47,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2022-07-22 21:16:47,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:16:47,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:16:47,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:16:47,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:16:47,851 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:16:47,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-07-22 21:16:47,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed1c00a5/0e7b00e1ed9e4b49896e814021d23301/FLAG848814301 [2022-07-22 21:16:48,379 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:16:48,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2022-07-22 21:16:48,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed1c00a5/0e7b00e1ed9e4b49896e814021d23301/FLAG848814301 [2022-07-22 21:16:48,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ed1c00a5/0e7b00e1ed9e4b49896e814021d23301 [2022-07-22 21:16:48,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:16:48,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:16:48,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:16:48,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:16:48,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:16:48,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:48,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6511f472 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48, skipping insertion in model container [2022-07-22 21:16:48,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:48,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:16:48,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:16:48,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2022-07-22 21:16:48,772 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2022-07-22 21:16:48,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:16:48,820 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:16:48,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2022-07-22 21:16:48,878 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2022-07-22 21:16:48,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:16:48,932 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:16:48,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48 WrapperNode [2022-07-22 21:16:48,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:16:48,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:16:48,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:16:48,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:16:48,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:48,956 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:48,981 INFO L137 Inliner]: procedures = 177, calls = 54, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 270 [2022-07-22 21:16:48,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:16:48,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:16:48,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:16:48,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:16:48,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:48,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:48,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:48,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:49,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:49,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:49,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:49,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:16:49,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:16:49,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:16:49,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:16:49,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (1/1) ... [2022-07-22 21:16:49,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:16:49,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:16:49,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 21:16:49,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 21:16:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-07-22 21:16:49,096 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-07-22 21:16:49,096 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-07-22 21:16:49,098 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-07-22 21:16:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:16:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:16:49,098 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-07-22 21:16:49,099 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-07-22 21:16:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:16:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:16:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:16:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:16:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:16:49,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:16:49,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:16:49,101 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:16:49,230 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:16:49,231 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:16:49,689 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:16:49,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:16:49,868 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 21:16:49,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:16:49 BoogieIcfgContainer [2022-07-22 21:16:49,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:16:49,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:16:49,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:16:49,876 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:16:49,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:16:48" (1/3) ... [2022-07-22 21:16:49,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f61da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:16:49, skipping insertion in model container [2022-07-22 21:16:49,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:16:48" (2/3) ... [2022-07-22 21:16:49,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f61da7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:16:49, skipping insertion in model container [2022-07-22 21:16:49,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:16:49" (3/3) ... [2022-07-22 21:16:49,880 INFO L111 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2022-07-22 21:16:49,886 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:16:49,894 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:16:49,894 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-22 21:16:49,895 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:16:49,987 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 21:16:50,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 183 transitions, 390 flow [2022-07-22 21:16:50,140 INFO L129 PetriNetUnfolder]: 18/180 cut-off events. [2022-07-22 21:16:50,140 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 21:16:50,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 180 events. 18/180 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 357 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2022-07-22 21:16:50,148 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 183 transitions, 390 flow [2022-07-22 21:16:50,156 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 168 transitions, 351 flow [2022-07-22 21:16:50,171 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:16:50,178 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3e5da940, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@34165e25 [2022-07-22 21:16:50,179 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 21:16:50,222 INFO L129 PetriNetUnfolder]: 9/123 cut-off events. [2022-07-22 21:16:50,222 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:16:50,222 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:50,223 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:50,223 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:50,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash -707274187, now seen corresponding path program 1 times [2022-07-22 21:16:50,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:50,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033730907] [2022-07-22 21:16:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:50,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:50,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:50,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:50,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033730907] [2022-07-22 21:16:50,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033730907] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:50,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:50,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:16:50,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264486722] [2022-07-22 21:16:50,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:50,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:16:50,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:50,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:16:50,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:16:50,579 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 183 [2022-07-22 21:16:50,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 168 transitions, 351 flow. Second operand has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:50,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:50,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 183 [2022-07-22 21:16:50,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:51,003 INFO L129 PetriNetUnfolder]: 629/1791 cut-off events. [2022-07-22 21:16:51,004 INFO L130 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2022-07-22 21:16:51,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 1791 events. 629/1791 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 12276 event pairs, 272 based on Foata normal form. 180/1804 useless extension candidates. Maximal degree in co-relation 1910. Up to 618 conditions per place. [2022-07-22 21:16:51,026 INFO L132 encePairwiseOnDemand]: 174/183 looper letters, 40 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2022-07-22 21:16:51,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 175 transitions, 455 flow [2022-07-22 21:16:51,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:16:51,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:16:51,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2022-07-22 21:16:51,045 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8998178506375227 [2022-07-22 21:16:51,046 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2022-07-22 21:16:51,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2022-07-22 21:16:51,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:51,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2022-07-22 21:16:51,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:51,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:51,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:51,068 INFO L186 Difference]: Start difference. First operand has 160 places, 168 transitions, 351 flow. Second operand 3 states and 494 transitions. [2022-07-22 21:16:51,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 175 transitions, 455 flow [2022-07-22 21:16:51,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 175 transitions, 442 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-22 21:16:51,080 INFO L242 Difference]: Finished difference. Result has 159 places, 163 transitions, 344 flow [2022-07-22 21:16:51,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=159, PETRI_TRANSITIONS=163} [2022-07-22 21:16:51,086 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, -1 predicate places. [2022-07-22 21:16:51,087 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 163 transitions, 344 flow [2022-07-22 21:16:51,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:51,087 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:51,088 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:51,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:16:51,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:51,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:51,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1151136919, now seen corresponding path program 1 times [2022-07-22 21:16:51,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:51,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525597879] [2022-07-22 21:16:51,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:51,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:51,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:51,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525597879] [2022-07-22 21:16:51,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525597879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:51,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:51,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:16:51,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194429657] [2022-07-22 21:16:51,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:51,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:16:51,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:51,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:16:51,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:16:51,247 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-07-22 21:16:51,248 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 163 transitions, 344 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:51,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:51,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-07-22 21:16:51,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:51,464 INFO L129 PetriNetUnfolder]: 402/1255 cut-off events. [2022-07-22 21:16:51,464 INFO L130 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2022-07-22 21:16:51,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 1255 events. 402/1255 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8040 event pairs, 79 based on Foata normal form. 0/1101 useless extension candidates. Maximal degree in co-relation 1163. Up to 395 conditions per place. [2022-07-22 21:16:51,475 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 26 selfloop transitions, 2 changer transitions 0/172 dead transitions. [2022-07-22 21:16:51,476 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 172 transitions, 421 flow [2022-07-22 21:16:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:16:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:16:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-07-22 21:16:51,478 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-07-22 21:16:51,478 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-07-22 21:16:51,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-07-22 21:16:51,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:51,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-07-22 21:16:51,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:51,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:51,482 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:51,483 INFO L186 Difference]: Start difference. First operand has 159 places, 163 transitions, 344 flow. Second operand 3 states and 500 transitions. [2022-07-22 21:16:51,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 172 transitions, 421 flow [2022-07-22 21:16:51,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 172 transitions, 419 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:16:51,487 INFO L242 Difference]: Finished difference. Result has 161 places, 163 transitions, 350 flow [2022-07-22 21:16:51,488 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=350, PETRI_PLACES=161, PETRI_TRANSITIONS=163} [2022-07-22 21:16:51,488 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2022-07-22 21:16:51,489 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 163 transitions, 350 flow [2022-07-22 21:16:51,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:51,489 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:51,490 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:51,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:16:51,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:51,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:51,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1794772677, now seen corresponding path program 1 times [2022-07-22 21:16:51,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:51,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373144788] [2022-07-22 21:16:51,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:51,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:51,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:51,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:51,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373144788] [2022-07-22 21:16:51,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373144788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:51,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:51,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:16:51,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554947857] [2022-07-22 21:16:51,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:51,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:16:51,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:51,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:16:51,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:16:51,585 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-22 21:16:51,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 163 transitions, 350 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:51,587 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:51,587 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-22 21:16:51,587 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:52,519 INFO L129 PetriNetUnfolder]: 2951/6671 cut-off events. [2022-07-22 21:16:52,519 INFO L130 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2022-07-22 21:16:52,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10975 conditions, 6671 events. 2951/6671 cut-off events. For 215/215 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 56588 event pairs, 405 based on Foata normal form. 0/6217 useless extension candidates. Maximal degree in co-relation 7824. Up to 1682 conditions per place. [2022-07-22 21:16:52,572 INFO L132 encePairwiseOnDemand]: 176/183 looper letters, 84 selfloop transitions, 11 changer transitions 7/227 dead transitions. [2022-07-22 21:16:52,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 227 transitions, 695 flow [2022-07-22 21:16:52,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:16:52,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:16:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1070 transitions. [2022-07-22 21:16:52,575 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8352849336455894 [2022-07-22 21:16:52,576 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1070 transitions. [2022-07-22 21:16:52,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1070 transitions. [2022-07-22 21:16:52,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:52,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1070 transitions. [2022-07-22 21:16:52,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:52,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:52,582 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:52,582 INFO L186 Difference]: Start difference. First operand has 161 places, 163 transitions, 350 flow. Second operand 7 states and 1070 transitions. [2022-07-22 21:16:52,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 227 transitions, 695 flow [2022-07-22 21:16:52,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 227 transitions, 691 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-22 21:16:52,590 INFO L242 Difference]: Finished difference. Result has 168 places, 172 transitions, 408 flow [2022-07-22 21:16:52,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=168, PETRI_TRANSITIONS=172} [2022-07-22 21:16:52,591 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 8 predicate places. [2022-07-22 21:16:52,592 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 172 transitions, 408 flow [2022-07-22 21:16:52,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:52,592 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:52,593 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:52,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:16:52,593 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:52,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:52,594 INFO L85 PathProgramCache]: Analyzing trace with hash 54936445, now seen corresponding path program 1 times [2022-07-22 21:16:52,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:52,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865472995] [2022-07-22 21:16:52,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:52,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:52,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:52,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865472995] [2022-07-22 21:16:52,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865472995] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:52,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:52,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:16:52,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066185579] [2022-07-22 21:16:52,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:52,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:16:52,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:52,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:16:52,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:16:52,786 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 183 [2022-07-22 21:16:52,788 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 172 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:52,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:52,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 183 [2022-07-22 21:16:52,788 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:53,292 INFO L129 PetriNetUnfolder]: 1220/3032 cut-off events. [2022-07-22 21:16:53,292 INFO L130 PetriNetUnfolder]: For 386/397 co-relation queries the response was YES. [2022-07-22 21:16:53,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5368 conditions, 3032 events. 1220/3032 cut-off events. For 386/397 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 24284 event pairs, 241 based on Foata normal form. 128/3023 useless extension candidates. Maximal degree in co-relation 5210. Up to 1544 conditions per place. [2022-07-22 21:16:53,319 INFO L132 encePairwiseOnDemand]: 165/183 looper letters, 95 selfloop transitions, 31 changer transitions 0/253 dead transitions. [2022-07-22 21:16:53,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 253 transitions, 868 flow [2022-07-22 21:16:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 21:16:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-22 21:16:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1198 transitions. [2022-07-22 21:16:53,323 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8183060109289617 [2022-07-22 21:16:53,324 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1198 transitions. [2022-07-22 21:16:53,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1198 transitions. [2022-07-22 21:16:53,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:53,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1198 transitions. [2022-07-22 21:16:53,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.75) internal successors, (1198), 8 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:53,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:53,331 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 183.0) internal successors, (1647), 9 states have internal predecessors, (1647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:53,332 INFO L186 Difference]: Start difference. First operand has 168 places, 172 transitions, 408 flow. Second operand 8 states and 1198 transitions. [2022-07-22 21:16:53,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 253 transitions, 868 flow [2022-07-22 21:16:53,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 253 transitions, 868 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:16:53,339 INFO L242 Difference]: Finished difference. Result has 181 places, 205 transitions, 655 flow [2022-07-22 21:16:53,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=655, PETRI_PLACES=181, PETRI_TRANSITIONS=205} [2022-07-22 21:16:53,341 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 21 predicate places. [2022-07-22 21:16:53,341 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 205 transitions, 655 flow [2022-07-22 21:16:53,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:53,342 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:53,342 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:53,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:16:53,342 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:53,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash 911682777, now seen corresponding path program 2 times [2022-07-22 21:16:53,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:53,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580123045] [2022-07-22 21:16:53,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:53,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:53,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:53,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:53,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580123045] [2022-07-22 21:16:53,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580123045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:53,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:53,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:16:53,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634718139] [2022-07-22 21:16:53,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:53,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:16:53,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:53,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:16:53,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:16:53,489 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 183 [2022-07-22 21:16:53,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 205 transitions, 655 flow. Second operand has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:53,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:53,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 183 [2022-07-22 21:16:53,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:54,448 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 102#L786-4true, Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 21#L739true, Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, 92#L777true]) [2022-07-22 21:16:54,449 INFO L384 tUnfolder$Statistics]: this new event has 84 ancestors and is not cut-off event [2022-07-22 21:16:54,449 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is not cut-off event [2022-07-22 21:16:54,449 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is not cut-off event [2022-07-22 21:16:54,449 INFO L387 tUnfolder$Statistics]: existing Event has 84 ancestors and is not cut-off event [2022-07-22 21:16:54,500 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [111#L739-3true, 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 102#L786-4true, Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 92#L777true, 204#true]) [2022-07-22 21:16:54,500 INFO L384 tUnfolder$Statistics]: this new event has 85 ancestors and is not cut-off event [2022-07-22 21:16:54,500 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-07-22 21:16:54,501 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-07-22 21:16:54,501 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is not cut-off event [2022-07-22 21:16:54,589 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), 85#L787-1true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 21#L739true, Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, 92#L777true]) [2022-07-22 21:16:54,590 INFO L384 tUnfolder$Statistics]: this new event has 87 ancestors and is not cut-off event [2022-07-22 21:16:54,590 INFO L387 tUnfolder$Statistics]: existing Event has 87 ancestors and is not cut-off event [2022-07-22 21:16:54,590 INFO L387 tUnfolder$Statistics]: existing Event has 87 ancestors and is not cut-off event [2022-07-22 21:16:54,590 INFO L387 tUnfolder$Statistics]: existing Event has 87 ancestors and is not cut-off event [2022-07-22 21:16:54,635 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [111#L739-3true, 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), 85#L787-1true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 92#L777true, 204#true]) [2022-07-22 21:16:54,635 INFO L384 tUnfolder$Statistics]: this new event has 88 ancestors and is not cut-off event [2022-07-22 21:16:54,636 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is not cut-off event [2022-07-22 21:16:54,636 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is not cut-off event [2022-07-22 21:16:54,636 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is not cut-off event [2022-07-22 21:16:54,822 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 92#L777true, 204#true]) [2022-07-22 21:16:54,822 INFO L384 tUnfolder$Statistics]: this new event has 91 ancestors and is not cut-off event [2022-07-22 21:16:54,822 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is not cut-off event [2022-07-22 21:16:54,822 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is not cut-off event [2022-07-22 21:16:54,823 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is not cut-off event [2022-07-22 21:16:54,922 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [120#L788-1true, 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, 54#L758-3true, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, 92#L777true]) [2022-07-22 21:16:54,923 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is not cut-off event [2022-07-22 21:16:54,923 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is not cut-off event [2022-07-22 21:16:54,923 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is not cut-off event [2022-07-22 21:16:54,923 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is not cut-off event [2022-07-22 21:16:55,026 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), 88#L788-2true, Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 92#L777true, 204#true]) [2022-07-22 21:16:55,026 INFO L384 tUnfolder$Statistics]: this new event has 96 ancestors and is not cut-off event [2022-07-22 21:16:55,026 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is not cut-off event [2022-07-22 21:16:55,027 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is not cut-off event [2022-07-22 21:16:55,027 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is not cut-off event [2022-07-22 21:16:55,083 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([834] L769-1-->L777: Formula: (= (select (select |v_#memory_int_1| |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|) |v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|) |v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|) InVars {#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|} OutVars{#memory_int=|v_#memory_int_1|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base_5|, qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset=|v_qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset_5|, qrcu_updaterThread1of1ForFork0_#t~mem20#1=|v_qrcu_updaterThread1of1ForFork0_#t~mem20#1_1|} AuxVars[] AssignedVars[qrcu_updaterThread1of1ForFork0_#t~mem20#1][234], [72#L789-1true, 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), qrcu_updaterThread1of1ForFork0InUse, Black: 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 186#(= ~readerprogress1~0 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, 92#L777true]) [2022-07-22 21:16:55,084 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is not cut-off event [2022-07-22 21:16:55,084 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is not cut-off event [2022-07-22 21:16:55,084 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is not cut-off event [2022-07-22 21:16:55,084 INFO L387 tUnfolder$Statistics]: existing Event has 98 ancestors and is not cut-off event [2022-07-22 21:16:55,276 INFO L129 PetriNetUnfolder]: 5633/11975 cut-off events. [2022-07-22 21:16:55,276 INFO L130 PetriNetUnfolder]: For 11615/11803 co-relation queries the response was YES. [2022-07-22 21:16:55,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28415 conditions, 11975 events. 5633/11975 cut-off events. For 11615/11803 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 111635 event pairs, 1142 based on Foata normal form. 142/11455 useless extension candidates. Maximal degree in co-relation 27823. Up to 3359 conditions per place. [2022-07-22 21:16:55,395 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 175 selfloop transitions, 18 changer transitions 10/335 dead transitions. [2022-07-22 21:16:55,396 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 335 transitions, 1649 flow [2022-07-22 21:16:55,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:16:55,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:16:55,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1381 transitions. [2022-07-22 21:16:55,399 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7546448087431694 [2022-07-22 21:16:55,400 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1381 transitions. [2022-07-22 21:16:55,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1381 transitions. [2022-07-22 21:16:55,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:55,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1381 transitions. [2022-07-22 21:16:55,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 138.1) internal successors, (1381), 10 states have internal predecessors, (1381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:55,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:55,407 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:55,407 INFO L186 Difference]: Start difference. First operand has 181 places, 205 transitions, 655 flow. Second operand 10 states and 1381 transitions. [2022-07-22 21:16:55,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 335 transitions, 1649 flow [2022-07-22 21:16:55,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 335 transitions, 1649 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:16:55,469 INFO L242 Difference]: Finished difference. Result has 195 places, 221 transitions, 771 flow [2022-07-22 21:16:55,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=771, PETRI_PLACES=195, PETRI_TRANSITIONS=221} [2022-07-22 21:16:55,470 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 35 predicate places. [2022-07-22 21:16:55,471 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 221 transitions, 771 flow [2022-07-22 21:16:55,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:55,471 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:55,472 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:55,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:16:55,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:55,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2053644825, now seen corresponding path program 1 times [2022-07-22 21:16:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:55,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101334196] [2022-07-22 21:16:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:55,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:55,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:55,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101334196] [2022-07-22 21:16:55,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101334196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:55,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:55,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 21:16:55,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608300219] [2022-07-22 21:16:55,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:55,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 21:16:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 21:16:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 21:16:55,576 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 183 [2022-07-22 21:16:55,577 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 221 transitions, 771 flow. Second operand has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:55,577 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:55,578 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 183 [2022-07-22 21:16:55,578 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:56,519 INFO L129 PetriNetUnfolder]: 2049/5079 cut-off events. [2022-07-22 21:16:56,520 INFO L130 PetriNetUnfolder]: For 5450/5514 co-relation queries the response was YES. [2022-07-22 21:16:56,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 5079 events. 2049/5079 cut-off events. For 5450/5514 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 45420 event pairs, 226 based on Foata normal form. 97/4971 useless extension candidates. Maximal degree in co-relation 12429. Up to 1713 conditions per place. [2022-07-22 21:16:56,634 INFO L132 encePairwiseOnDemand]: 162/183 looper letters, 120 selfloop transitions, 37 changer transitions 0/298 dead transitions. [2022-07-22 21:16:56,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 298 transitions, 1417 flow [2022-07-22 21:16:56,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:16:56,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:16:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1468 transitions. [2022-07-22 21:16:56,645 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8021857923497268 [2022-07-22 21:16:56,646 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1468 transitions. [2022-07-22 21:16:56,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1468 transitions. [2022-07-22 21:16:56,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:56,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1468 transitions. [2022-07-22 21:16:56,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.8) internal successors, (1468), 10 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:56,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:56,682 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:56,682 INFO L186 Difference]: Start difference. First operand has 195 places, 221 transitions, 771 flow. Second operand 10 states and 1468 transitions. [2022-07-22 21:16:56,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 298 transitions, 1417 flow [2022-07-22 21:16:56,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 298 transitions, 1417 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:16:56,706 INFO L242 Difference]: Finished difference. Result has 209 places, 237 transitions, 1010 flow [2022-07-22 21:16:56,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1010, PETRI_PLACES=209, PETRI_TRANSITIONS=237} [2022-07-22 21:16:56,709 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 49 predicate places. [2022-07-22 21:16:56,709 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 237 transitions, 1010 flow [2022-07-22 21:16:56,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:56,710 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:56,710 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:56,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:16:56,711 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:56,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:56,711 INFO L85 PathProgramCache]: Analyzing trace with hash 928253015, now seen corresponding path program 1 times [2022-07-22 21:16:56,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:56,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3091777] [2022-07-22 21:16:56,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:56,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:56,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:56,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3091777] [2022-07-22 21:16:56,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3091777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:56,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:56,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:16:56,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490910120] [2022-07-22 21:16:56,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:56,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:16:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:16:56,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:16:56,760 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-07-22 21:16:56,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 237 transitions, 1010 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:56,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:56,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-07-22 21:16:56,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:57,133 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([850] L771-2-->L771-3: Formula: (= v_~ctr2~0_19 (+ |v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3| 1)) InVars {qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|} OutVars{qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|, ~ctr2~0=v_~ctr2~0_19} AuxVars[] AssignedVars[~ctr2~0][213], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 165#L771-3true, 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-22 21:16:57,133 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-07-22 21:16:57,133 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,134 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,134 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,134 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([851] L772-1-->L772-2: Formula: (= (+ |v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3| 1) v_~ctr1~0_20) InVars {qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} OutVars{~ctr1~0=v_~ctr1~0_20, qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} AuxVars[] AssignedVars[~ctr1~0][212], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), 50#L772-2true, Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-22 21:16:57,134 INFO L384 tUnfolder$Statistics]: this new event has 93 ancestors and is cut-off event [2022-07-22 21:16:57,134 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,134 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,135 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,241 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([851] L772-1-->L772-2: Formula: (= (+ |v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3| 1) v_~ctr1~0_20) InVars {qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} OutVars{~ctr1~0=v_~ctr1~0_20, qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} AuxVars[] AssignedVars[~ctr1~0][212], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 50#L772-2true, Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-22 21:16:57,242 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-22 21:16:57,242 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,242 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,242 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,242 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-22 21:16:57,243 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([850] L771-2-->L771-3: Formula: (= v_~ctr2~0_19 (+ |v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3| 1)) InVars {qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|} OutVars{qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|, ~ctr2~0=v_~ctr2~0_19} AuxVars[] AssignedVars[~ctr2~0][213], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 165#L771-3true, Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-22 21:16:57,243 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-22 21:16:57,243 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,243 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,243 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-22 21:16:57,243 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,334 INFO L129 PetriNetUnfolder]: 1439/4562 cut-off events. [2022-07-22 21:16:57,334 INFO L130 PetriNetUnfolder]: For 5492/5750 co-relation queries the response was YES. [2022-07-22 21:16:57,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10920 conditions, 4562 events. 1439/4562 cut-off events. For 5492/5750 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 43064 event pairs, 311 based on Foata normal form. 160/4405 useless extension candidates. Maximal degree in co-relation 10587. Up to 1193 conditions per place. [2022-07-22 21:16:57,400 INFO L132 encePairwiseOnDemand]: 181/183 looper letters, 73 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2022-07-22 21:16:57,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 258 transitions, 1286 flow [2022-07-22 21:16:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:16:57,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:16:57,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-07-22 21:16:57,402 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-07-22 21:16:57,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-07-22 21:16:57,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-07-22 21:16:57,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:57,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-07-22 21:16:57,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:57,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:57,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:57,408 INFO L186 Difference]: Start difference. First operand has 209 places, 237 transitions, 1010 flow. Second operand 3 states and 500 transitions. [2022-07-22 21:16:57,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 258 transitions, 1286 flow [2022-07-22 21:16:57,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 258 transitions, 1263 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:16:57,433 INFO L242 Difference]: Finished difference. Result has 208 places, 237 transitions, 994 flow [2022-07-22 21:16:57,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=994, PETRI_PLACES=208, PETRI_TRANSITIONS=237} [2022-07-22 21:16:57,434 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 48 predicate places. [2022-07-22 21:16:57,435 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 237 transitions, 994 flow [2022-07-22 21:16:57,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:57,436 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:57,436 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:57,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:16:57,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:57,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash 545156572, now seen corresponding path program 1 times [2022-07-22 21:16:57,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:57,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467211769] [2022-07-22 21:16:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:57,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:57,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:57,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467211769] [2022-07-22 21:16:57,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467211769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:57,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:57,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 21:16:57,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880411925] [2022-07-22 21:16:57,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:57,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:16:57,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:57,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:16:57,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:16:57,506 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 183 [2022-07-22 21:16:57,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 237 transitions, 994 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:57,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:57,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 183 [2022-07-22 21:16:57,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:57,970 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([851] L772-1-->L772-2: Formula: (= (+ |v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3| 1) v_~ctr1~0_20) InVars {qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} OutVars{~ctr1~0=v_~ctr1~0_20, qrcu_updaterThread1of1ForFork0_#t~post18#1=|v_qrcu_updaterThread1of1ForFork0_#t~post18#1_3|} AuxVars[] AssignedVars[~ctr1~0][212], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), 50#L772-2true, Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 272#(= ~readerprogress2~0 2), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-22 21:16:57,970 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-22 21:16:57,970 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-22 21:16:57,971 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,971 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,971 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([850] L771-2-->L771-3: Formula: (= v_~ctr2~0_19 (+ |v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3| 1)) InVars {qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|} OutVars{qrcu_updaterThread1of1ForFork0_#t~post16#1=|v_qrcu_updaterThread1of1ForFork0_#t~post16#1_3|, ~ctr2~0=v_~ctr2~0_19} AuxVars[] AssignedVars[~ctr2~0][213], [Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 199#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 192#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0), Black: 191#(= ~readerprogress2~0 0), Black: 197#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.offset|) 0) (= ~readerprogress2~0 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem21#1| 0)), 109#L787-2true, 54#L758-3true, Black: 211#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 165#L771-3true, 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), Black: 206#(= (+ (- 1) ~ctr1~0) 0), Black: 209#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (= ~ctr2~0 0)), 272#(= ~readerprogress2~0 2), 204#true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 231#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 221#true, Black: 186#(= ~readerprogress1~0 0)]) [2022-07-22 21:16:57,971 INFO L384 tUnfolder$Statistics]: this new event has 98 ancestors and is cut-off event [2022-07-22 21:16:57,971 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-22 21:16:57,972 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:57,972 INFO L387 tUnfolder$Statistics]: existing Event has 90 ancestors and is cut-off event [2022-07-22 21:16:58,053 INFO L129 PetriNetUnfolder]: 1515/4859 cut-off events. [2022-07-22 21:16:58,054 INFO L130 PetriNetUnfolder]: For 5280/5543 co-relation queries the response was YES. [2022-07-22 21:16:58,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11319 conditions, 4859 events. 1515/4859 cut-off events. For 5280/5543 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 46821 event pairs, 203 based on Foata normal form. 107/4590 useless extension candidates. Maximal degree in co-relation 10970. Up to 1118 conditions per place. [2022-07-22 21:16:58,104 INFO L132 encePairwiseOnDemand]: 181/183 looper letters, 70 selfloop transitions, 1 changer transitions 0/258 dead transitions. [2022-07-22 21:16:58,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 258 transitions, 1265 flow [2022-07-22 21:16:58,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:16:58,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:16:58,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-07-22 21:16:58,107 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9107468123861566 [2022-07-22 21:16:58,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-07-22 21:16:58,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-07-22 21:16:58,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:58,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-07-22 21:16:58,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:58,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:58,110 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:58,110 INFO L186 Difference]: Start difference. First operand has 208 places, 237 transitions, 994 flow. Second operand 3 states and 500 transitions. [2022-07-22 21:16:58,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 258 transitions, 1265 flow [2022-07-22 21:16:58,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 258 transitions, 1264 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:16:58,133 INFO L242 Difference]: Finished difference. Result has 210 places, 237 transitions, 998 flow [2022-07-22 21:16:58,133 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=993, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=998, PETRI_PLACES=210, PETRI_TRANSITIONS=237} [2022-07-22 21:16:58,134 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 50 predicate places. [2022-07-22 21:16:58,134 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 237 transitions, 998 flow [2022-07-22 21:16:58,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:58,134 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:58,135 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:58,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:16:58,135 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:58,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:58,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1402509722, now seen corresponding path program 1 times [2022-07-22 21:16:58,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:58,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598595700] [2022-07-22 21:16:58,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:58,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:58,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:58,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:58,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598595700] [2022-07-22 21:16:58,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598595700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:58,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:58,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:16:58,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638797646] [2022-07-22 21:16:58,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:58,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:16:58,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:58,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:16:58,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:16:58,179 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 183 [2022-07-22 21:16:58,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 237 transitions, 998 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:58,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:58,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 183 [2022-07-22 21:16:58,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:58,849 INFO L129 PetriNetUnfolder]: 1766/5380 cut-off events. [2022-07-22 21:16:58,849 INFO L130 PetriNetUnfolder]: For 6303/6533 co-relation queries the response was YES. [2022-07-22 21:16:58,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12179 conditions, 5380 events. 1766/5380 cut-off events. For 6303/6533 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 50298 event pairs, 316 based on Foata normal form. 40/4971 useless extension candidates. Maximal degree in co-relation 11793. Up to 1261 conditions per place. [2022-07-22 21:16:58,898 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 49 selfloop transitions, 2 changer transitions 43/237 dead transitions. [2022-07-22 21:16:58,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 237 transitions, 1140 flow [2022-07-22 21:16:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:16:58,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:16:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-07-22 21:16:58,900 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8943533697632058 [2022-07-22 21:16:58,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-07-22 21:16:58,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-07-22 21:16:58,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:58,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-07-22 21:16:58,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:58,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:58,905 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:58,905 INFO L186 Difference]: Start difference. First operand has 210 places, 237 transitions, 998 flow. Second operand 3 states and 491 transitions. [2022-07-22 21:16:58,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 237 transitions, 1140 flow [2022-07-22 21:16:58,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 237 transitions, 1131 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-22 21:16:58,926 INFO L242 Difference]: Finished difference. Result has 202 places, 181 transitions, 675 flow [2022-07-22 21:16:58,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=675, PETRI_PLACES=202, PETRI_TRANSITIONS=181} [2022-07-22 21:16:58,928 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 42 predicate places. [2022-07-22 21:16:58,928 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 181 transitions, 675 flow [2022-07-22 21:16:58,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:58,928 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:58,928 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:58,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:16:58,929 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:58,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:58,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1806226238, now seen corresponding path program 1 times [2022-07-22 21:16:58,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:58,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313476547] [2022-07-22 21:16:58,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:58,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:58,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:58,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:58,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313476547] [2022-07-22 21:16:58,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313476547] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:58,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:58,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:16:58,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641645922] [2022-07-22 21:16:58,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:58,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:16:58,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:58,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:16:58,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:16:58,981 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 183 [2022-07-22 21:16:58,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 181 transitions, 675 flow. Second operand has 5 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:58,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:58,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 183 [2022-07-22 21:16:58,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:59,367 INFO L129 PetriNetUnfolder]: 887/2956 cut-off events. [2022-07-22 21:16:59,367 INFO L130 PetriNetUnfolder]: For 2616/2661 co-relation queries the response was YES. [2022-07-22 21:16:59,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6793 conditions, 2956 events. 887/2956 cut-off events. For 2616/2661 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26574 event pairs, 242 based on Foata normal form. 13/2798 useless extension candidates. Maximal degree in co-relation 6524. Up to 840 conditions per place. [2022-07-22 21:16:59,390 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 69 selfloop transitions, 25 changer transitions 5/236 dead transitions. [2022-07-22 21:16:59,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 236 transitions, 1146 flow [2022-07-22 21:16:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 21:16:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-22 21:16:59,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1118 transitions. [2022-07-22 21:16:59,393 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8727556596409055 [2022-07-22 21:16:59,393 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1118 transitions. [2022-07-22 21:16:59,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1118 transitions. [2022-07-22 21:16:59,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:59,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1118 transitions. [2022-07-22 21:16:59,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.71428571428572) internal successors, (1118), 7 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:59,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:59,400 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:59,400 INFO L186 Difference]: Start difference. First operand has 202 places, 181 transitions, 675 flow. Second operand 7 states and 1118 transitions. [2022-07-22 21:16:59,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 236 transitions, 1146 flow [2022-07-22 21:16:59,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 236 transitions, 1096 flow, removed 19 selfloop flow, removed 7 redundant places. [2022-07-22 21:16:59,413 INFO L242 Difference]: Finished difference. Result has 193 places, 196 transitions, 847 flow [2022-07-22 21:16:59,413 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=647, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=847, PETRI_PLACES=193, PETRI_TRANSITIONS=196} [2022-07-22 21:16:59,414 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 33 predicate places. [2022-07-22 21:16:59,414 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 196 transitions, 847 flow [2022-07-22 21:16:59,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:59,415 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:59,415 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:59,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:16:59,416 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:59,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:59,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2048247070, now seen corresponding path program 1 times [2022-07-22 21:16:59,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:59,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517816016] [2022-07-22 21:16:59,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:59,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:16:59,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:16:59,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:16:59,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517816016] [2022-07-22 21:16:59,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517816016] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:16:59,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:16:59,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 21:16:59,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281348801] [2022-07-22 21:16:59,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:16:59,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 21:16:59,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:16:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 21:16:59,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 21:16:59,451 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 183 [2022-07-22 21:16:59,452 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 196 transitions, 847 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:59,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:16:59,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 183 [2022-07-22 21:16:59,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:16:59,770 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([842] L771-->L771-1: Formula: (<= v_~idx~0_5 0) InVars {~idx~0=v_~idx~0_5} OutVars{~idx~0=v_~idx~0_5} AuxVars[] AssignedVars[][145], [111#L739-3true, 189#true, Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), 102#L786-4true, Black: 191#(= ~readerprogress2~0 0), 54#L758-3true, 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 226#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0), 272#(= ~readerprogress2~0 2), 204#true, Black: 281#(= ~ctr2~0 0), Black: 283#(<= 1 ~ctr2~0), Black: 282#(= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0), Black: 287#(and (= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0) (<= 1 ~ctr2~0)), 80#L771-1true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 294#true, Black: 186#(= ~readerprogress1~0 0), 279#true]) [2022-07-22 21:16:59,771 INFO L384 tUnfolder$Statistics]: this new event has 90 ancestors and is cut-off event [2022-07-22 21:16:59,771 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-22 21:16:59,771 INFO L387 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-07-22 21:16:59,771 INFO L387 tUnfolder$Statistics]: existing Event has 85 ancestors and is cut-off event [2022-07-22 21:16:59,823 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([842] L771-->L771-1: Formula: (<= v_~idx~0_5 0) InVars {~idx~0=v_~idx~0_5} OutVars{~idx~0=v_~idx~0_5} AuxVars[] AssignedVars[][145], [189#true, Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 191#(= ~readerprogress2~0 0), 109#L787-2true, 54#L758-3true, 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 226#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0), 272#(= ~readerprogress2~0 2), 204#true, Black: 281#(= ~ctr2~0 0), Black: 283#(<= 1 ~ctr2~0), Black: 282#(= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0), Black: 287#(and (= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0) (<= 1 ~ctr2~0)), 80#L771-1true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 294#true, Black: 186#(= ~readerprogress1~0 0), 279#true]) [2022-07-22 21:16:59,824 INFO L384 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-07-22 21:16:59,824 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-07-22 21:16:59,824 INFO L387 tUnfolder$Statistics]: existing Event has 88 ancestors and is cut-off event [2022-07-22 21:16:59,824 INFO L387 tUnfolder$Statistics]: existing Event has 91 ancestors and is cut-off event [2022-07-22 21:16:59,859 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([842] L771-->L771-1: Formula: (<= v_~idx~0_5 0) InVars {~idx~0=v_~idx~0_5} OutVars{~idx~0=v_~idx~0_5} AuxVars[] AssignedVars[][145], [189#true, Black: 248#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 244#true, Black: 254#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), 88#L788-2true, Black: 256#(and (<= 2 ~ctr1~0) (= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 0) (= ~ctr2~0 0)), Black: 191#(= ~readerprogress2~0 0), 250#(<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|), 180#(not (<= |qrcu_updaterThread1of1ForFork0_~sum~0#1| 1)), Black: 208#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 213#(and (<= 2 |qrcu_updaterThread1of1ForFork0_~sum~0#1|) (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 207#(and (= ~ctr2~0 0) (= (+ (- 1) ~ctr1~0) 0)), 226#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0), 272#(= ~readerprogress2~0 2), 204#true, Black: 281#(= ~ctr2~0 0), Black: 283#(<= 1 ~ctr2~0), Black: 282#(= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0), Black: 287#(and (= |qrcu_updaterThread1of1ForFork0_#t~post16#1| 0) (<= 1 ~ctr2~0)), 80#L771-1true, qrcu_updaterThread1of1ForFork0InUse, 267#(= ~readerprogress1~0 2), Black: 235#(and (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.offset|) 0) (= |qrcu_updaterThread1of1ForFork0_#t~mem20#1| 0)), Black: 224#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0)), Black: 229#(and (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|) 1) (= ~readerprogress1~0 0) (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0#1.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0#1.base|))), Black: 223#(= ~readerprogress1~0 0), Black: 178#true, 294#true, Black: 186#(= ~readerprogress1~0 0), 279#true]) [2022-07-22 21:16:59,860 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is cut-off event [2022-07-22 21:16:59,860 INFO L387 tUnfolder$Statistics]: existing Event has 96 ancestors and is cut-off event [2022-07-22 21:16:59,860 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-22 21:16:59,860 INFO L387 tUnfolder$Statistics]: existing Event has 93 ancestors and is cut-off event [2022-07-22 21:16:59,882 INFO L129 PetriNetUnfolder]: 805/2891 cut-off events. [2022-07-22 21:16:59,883 INFO L130 PetriNetUnfolder]: For 4702/4780 co-relation queries the response was YES. [2022-07-22 21:16:59,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7111 conditions, 2891 events. 805/2891 cut-off events. For 4702/4780 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 25183 event pairs, 190 based on Foata normal form. 13/2761 useless extension candidates. Maximal degree in co-relation 6838. Up to 741 conditions per place. [2022-07-22 21:16:59,908 INFO L132 encePairwiseOnDemand]: 181/183 looper letters, 60 selfloop transitions, 1 changer transitions 2/210 dead transitions. [2022-07-22 21:16:59,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 210 transitions, 1079 flow [2022-07-22 21:16:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 21:16:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-22 21:16:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2022-07-22 21:16:59,910 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-07-22 21:16:59,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2022-07-22 21:16:59,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2022-07-22 21:16:59,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:16:59,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2022-07-22 21:16:59,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:59,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:59,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:59,914 INFO L186 Difference]: Start difference. First operand has 193 places, 196 transitions, 847 flow. Second operand 3 states and 488 transitions. [2022-07-22 21:16:59,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 210 transitions, 1079 flow [2022-07-22 21:16:59,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 210 transitions, 1073 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-07-22 21:16:59,929 INFO L242 Difference]: Finished difference. Result has 194 places, 193 transitions, 837 flow [2022-07-22 21:16:59,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=837, PETRI_PLACES=194, PETRI_TRANSITIONS=193} [2022-07-22 21:16:59,930 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 34 predicate places. [2022-07-22 21:16:59,930 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 193 transitions, 837 flow [2022-07-22 21:16:59,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:16:59,931 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:16:59,931 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:16:59,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:16:59,931 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:16:59,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:16:59,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1693078370, now seen corresponding path program 1 times [2022-07-22 21:16:59,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:16:59,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665644015] [2022-07-22 21:16:59,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:16:59,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:16:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:00,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:00,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:00,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665644015] [2022-07-22 21:17:00,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665644015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:00,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:00,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:17:00,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082441171] [2022-07-22 21:17:00,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:00,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:17:00,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:17:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:17:00,069 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-22 21:17:00,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 193 transitions, 837 flow. Second operand has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:00,071 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:00,071 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-22 21:17:00,071 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:00,967 INFO L129 PetriNetUnfolder]: 1864/4561 cut-off events. [2022-07-22 21:17:00,967 INFO L130 PetriNetUnfolder]: For 9546/9625 co-relation queries the response was YES. [2022-07-22 21:17:00,991 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13806 conditions, 4561 events. 1864/4561 cut-off events. For 9546/9625 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 38478 event pairs, 388 based on Foata normal form. 60/4501 useless extension candidates. Maximal degree in co-relation 13390. Up to 1855 conditions per place. [2022-07-22 21:17:01,006 INFO L132 encePairwiseOnDemand]: 167/183 looper letters, 133 selfloop transitions, 52 changer transitions 9/304 dead transitions. [2022-07-22 21:17:01,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 304 transitions, 1959 flow [2022-07-22 21:17:01,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:17:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:17:01,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1493 transitions. [2022-07-22 21:17:01,011 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.741679085941381 [2022-07-22 21:17:01,011 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1493 transitions. [2022-07-22 21:17:01,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1493 transitions. [2022-07-22 21:17:01,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:01,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1493 transitions. [2022-07-22 21:17:01,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 135.72727272727272) internal successors, (1493), 11 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:01,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:01,020 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:01,021 INFO L186 Difference]: Start difference. First operand has 194 places, 193 transitions, 837 flow. Second operand 11 states and 1493 transitions. [2022-07-22 21:17:01,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 304 transitions, 1959 flow [2022-07-22 21:17:01,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 304 transitions, 1958 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-22 21:17:01,053 INFO L242 Difference]: Finished difference. Result has 207 places, 223 transitions, 1342 flow [2022-07-22 21:17:01,054 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1342, PETRI_PLACES=207, PETRI_TRANSITIONS=223} [2022-07-22 21:17:01,055 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 47 predicate places. [2022-07-22 21:17:01,055 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 223 transitions, 1342 flow [2022-07-22 21:17:01,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:01,056 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:01,056 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:01,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:17:01,056 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:01,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:01,057 INFO L85 PathProgramCache]: Analyzing trace with hash 523705238, now seen corresponding path program 2 times [2022-07-22 21:17:01,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:01,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795570540] [2022-07-22 21:17:01,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:01,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:01,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:01,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795570540] [2022-07-22 21:17:01,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795570540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:01,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:01,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:17:01,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560689288] [2022-07-22 21:17:01,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:01,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:17:01,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:17:01,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:17:01,211 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-22 21:17:01,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 223 transitions, 1342 flow. Second operand has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:01,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:01,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-22 21:17:01,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:02,163 INFO L129 PetriNetUnfolder]: 1929/4784 cut-off events. [2022-07-22 21:17:02,163 INFO L130 PetriNetUnfolder]: For 14272/14353 co-relation queries the response was YES. [2022-07-22 21:17:02,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15895 conditions, 4784 events. 1929/4784 cut-off events. For 14272/14353 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 41093 event pairs, 452 based on Foata normal form. 66/4701 useless extension candidates. Maximal degree in co-relation 15435. Up to 1799 conditions per place. [2022-07-22 21:17:02,201 INFO L132 encePairwiseOnDemand]: 166/183 looper letters, 133 selfloop transitions, 75 changer transitions 33/351 dead transitions. [2022-07-22 21:17:02,201 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 351 transitions, 2826 flow [2022-07-22 21:17:02,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:17:02,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:17:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1753 transitions. [2022-07-22 21:17:02,207 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7368642286675073 [2022-07-22 21:17:02,207 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1753 transitions. [2022-07-22 21:17:02,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1753 transitions. [2022-07-22 21:17:02,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:02,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1753 transitions. [2022-07-22 21:17:02,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 134.84615384615384) internal successors, (1753), 13 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:02,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:02,217 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:02,218 INFO L186 Difference]: Start difference. First operand has 207 places, 223 transitions, 1342 flow. Second operand 13 states and 1753 transitions. [2022-07-22 21:17:02,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 351 transitions, 2826 flow [2022-07-22 21:17:02,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 351 transitions, 2749 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-07-22 21:17:02,270 INFO L242 Difference]: Finished difference. Result has 219 places, 243 transitions, 1773 flow [2022-07-22 21:17:02,270 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1773, PETRI_PLACES=219, PETRI_TRANSITIONS=243} [2022-07-22 21:17:02,271 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 59 predicate places. [2022-07-22 21:17:02,271 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 243 transitions, 1773 flow [2022-07-22 21:17:02,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:02,272 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:02,272 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:02,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:17:02,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:02,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash 131143178, now seen corresponding path program 1 times [2022-07-22 21:17:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:02,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855756590] [2022-07-22 21:17:02,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:02,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:02,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:02,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:02,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855756590] [2022-07-22 21:17:02,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855756590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:02,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:02,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:17:02,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175179959] [2022-07-22 21:17:02,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:02,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:17:02,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:02,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:17:02,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:17:02,441 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-22 21:17:02,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 243 transitions, 1773 flow. Second operand has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:02,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:02,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-22 21:17:02,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:03,356 INFO L129 PetriNetUnfolder]: 1659/4294 cut-off events. [2022-07-22 21:17:03,356 INFO L130 PetriNetUnfolder]: For 17339/17459 co-relation queries the response was YES. [2022-07-22 21:17:03,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14836 conditions, 4294 events. 1659/4294 cut-off events. For 17339/17459 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 37048 event pairs, 456 based on Foata normal form. 91/4239 useless extension candidates. Maximal degree in co-relation 14400. Up to 1720 conditions per place. [2022-07-22 21:17:03,384 INFO L132 encePairwiseOnDemand]: 169/183 looper letters, 143 selfloop transitions, 65 changer transitions 7/325 dead transitions. [2022-07-22 21:17:03,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 325 transitions, 2692 flow [2022-07-22 21:17:03,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:17:03,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:17:03,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1861 transitions. [2022-07-22 21:17:03,389 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7263856362217018 [2022-07-22 21:17:03,389 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1861 transitions. [2022-07-22 21:17:03,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1861 transitions. [2022-07-22 21:17:03,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:03,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1861 transitions. [2022-07-22 21:17:03,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 132.92857142857142) internal successors, (1861), 14 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:03,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:03,398 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:03,398 INFO L186 Difference]: Start difference. First operand has 219 places, 243 transitions, 1773 flow. Second operand 14 states and 1861 transitions. [2022-07-22 21:17:03,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 325 transitions, 2692 flow [2022-07-22 21:17:03,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 325 transitions, 2638 flow, removed 23 selfloop flow, removed 3 redundant places. [2022-07-22 21:17:03,458 INFO L242 Difference]: Finished difference. Result has 232 places, 252 transitions, 1946 flow [2022-07-22 21:17:03,459 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1946, PETRI_PLACES=232, PETRI_TRANSITIONS=252} [2022-07-22 21:17:03,459 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 72 predicate places. [2022-07-22 21:17:03,459 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 252 transitions, 1946 flow [2022-07-22 21:17:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:03,460 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:03,460 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:03,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:17:03,461 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:03,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:03,461 INFO L85 PathProgramCache]: Analyzing trace with hash 804789034, now seen corresponding path program 3 times [2022-07-22 21:17:03,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:03,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840500191] [2022-07-22 21:17:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:03,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:03,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:03,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840500191] [2022-07-22 21:17:03,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840500191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:03,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:03,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:17:03,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984917442] [2022-07-22 21:17:03,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:03,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:17:03,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:03,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:17:03,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:17:03,585 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-22 21:17:03,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 252 transitions, 1946 flow. Second operand has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:03,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:03,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-22 21:17:03,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:04,313 INFO L129 PetriNetUnfolder]: 1591/4144 cut-off events. [2022-07-22 21:17:04,314 INFO L130 PetriNetUnfolder]: For 17855/17994 co-relation queries the response was YES. [2022-07-22 21:17:04,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14437 conditions, 4144 events. 1591/4144 cut-off events. For 17855/17994 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 35697 event pairs, 427 based on Foata normal form. 119/4130 useless extension candidates. Maximal degree in co-relation 14034. Up to 1387 conditions per place. [2022-07-22 21:17:04,358 INFO L132 encePairwiseOnDemand]: 166/183 looper letters, 157 selfloop transitions, 74 changer transitions 14/355 dead transitions. [2022-07-22 21:17:04,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 355 transitions, 3115 flow [2022-07-22 21:17:04,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:17:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:17:04,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1633 transitions. [2022-07-22 21:17:04,362 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7436247723132969 [2022-07-22 21:17:04,363 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1633 transitions. [2022-07-22 21:17:04,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1633 transitions. [2022-07-22 21:17:04,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:04,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1633 transitions. [2022-07-22 21:17:04,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.08333333333334) internal successors, (1633), 12 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:04,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:04,370 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:04,370 INFO L186 Difference]: Start difference. First operand has 232 places, 252 transitions, 1946 flow. Second operand 12 states and 1633 transitions. [2022-07-22 21:17:04,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 355 transitions, 3115 flow [2022-07-22 21:17:04,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 355 transitions, 3050 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-22 21:17:04,432 INFO L242 Difference]: Finished difference. Result has 242 places, 260 transitions, 2212 flow [2022-07-22 21:17:04,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2212, PETRI_PLACES=242, PETRI_TRANSITIONS=260} [2022-07-22 21:17:04,433 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 82 predicate places. [2022-07-22 21:17:04,433 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 260 transitions, 2212 flow [2022-07-22 21:17:04,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.1) internal successors, (1251), 10 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:04,434 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:04,434 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:04,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:17:04,435 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:04,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:04,435 INFO L85 PathProgramCache]: Analyzing trace with hash 799660206, now seen corresponding path program 2 times [2022-07-22 21:17:04,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:04,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978279982] [2022-07-22 21:17:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:04,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:04,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:04,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:04,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978279982] [2022-07-22 21:17:04,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978279982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:04,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:04,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:17:04,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457432023] [2022-07-22 21:17:04,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:04,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:17:04,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:04,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:17:04,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:17:04,567 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-22 21:17:04,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 260 transitions, 2212 flow. Second operand has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:04,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:04,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-22 21:17:04,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:05,397 INFO L129 PetriNetUnfolder]: 1564/4153 cut-off events. [2022-07-22 21:17:05,397 INFO L130 PetriNetUnfolder]: For 22151/22308 co-relation queries the response was YES. [2022-07-22 21:17:05,423 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14974 conditions, 4153 events. 1564/4153 cut-off events. For 22151/22308 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 36068 event pairs, 292 based on Foata normal form. 128/4149 useless extension candidates. Maximal degree in co-relation 14582. Up to 796 conditions per place. [2022-07-22 21:17:05,430 INFO L132 encePairwiseOnDemand]: 162/183 looper letters, 159 selfloop transitions, 76 changer transitions 28/373 dead transitions. [2022-07-22 21:17:05,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 373 transitions, 3508 flow [2022-07-22 21:17:05,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:17:05,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:17:05,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2145 transitions. [2022-07-22 21:17:05,433 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7325819672131147 [2022-07-22 21:17:05,433 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2145 transitions. [2022-07-22 21:17:05,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2145 transitions. [2022-07-22 21:17:05,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:05,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2145 transitions. [2022-07-22 21:17:05,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 134.0625) internal successors, (2145), 16 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:05,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:05,441 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:05,441 INFO L186 Difference]: Start difference. First operand has 242 places, 260 transitions, 2212 flow. Second operand 16 states and 2145 transitions. [2022-07-22 21:17:05,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 373 transitions, 3508 flow [2022-07-22 21:17:05,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 373 transitions, 3401 flow, removed 32 selfloop flow, removed 5 redundant places. [2022-07-22 21:17:05,524 INFO L242 Difference]: Finished difference. Result has 257 places, 263 transitions, 2379 flow [2022-07-22 21:17:05,524 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2379, PETRI_PLACES=257, PETRI_TRANSITIONS=263} [2022-07-22 21:17:05,525 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 97 predicate places. [2022-07-22 21:17:05,525 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 263 transitions, 2379 flow [2022-07-22 21:17:05,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:05,526 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:05,526 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:05,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:17:05,526 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:05,527 INFO L85 PathProgramCache]: Analyzing trace with hash 327729458, now seen corresponding path program 3 times [2022-07-22 21:17:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:05,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262689535] [2022-07-22 21:17:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:05,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:05,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262689535] [2022-07-22 21:17:05,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262689535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:05,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:05,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:17:05,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106395586] [2022-07-22 21:17:05,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:05,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:17:05,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:05,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:17:05,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:17:05,665 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-22 21:17:05,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 263 transitions, 2379 flow. Second operand has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:05,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:05,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-22 21:17:05,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:06,540 INFO L129 PetriNetUnfolder]: 1510/4005 cut-off events. [2022-07-22 21:17:06,541 INFO L130 PetriNetUnfolder]: For 24662/24782 co-relation queries the response was YES. [2022-07-22 21:17:06,566 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14738 conditions, 4005 events. 1510/4005 cut-off events. For 24662/24782 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 34643 event pairs, 429 based on Foata normal form. 99/3970 useless extension candidates. Maximal degree in co-relation 14420. Up to 1439 conditions per place. [2022-07-22 21:17:06,574 INFO L132 encePairwiseOnDemand]: 169/183 looper letters, 138 selfloop transitions, 82 changer transitions 7/337 dead transitions. [2022-07-22 21:17:06,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 337 transitions, 3271 flow [2022-07-22 21:17:06,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:17:06,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:17:06,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2108 transitions. [2022-07-22 21:17:06,577 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7199453551912568 [2022-07-22 21:17:06,577 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2108 transitions. [2022-07-22 21:17:06,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2108 transitions. [2022-07-22 21:17:06,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:06,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2108 transitions. [2022-07-22 21:17:06,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 131.75) internal successors, (2108), 16 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:06,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:06,584 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:06,585 INFO L186 Difference]: Start difference. First operand has 257 places, 263 transitions, 2379 flow. Second operand 16 states and 2108 transitions. [2022-07-22 21:17:06,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 337 transitions, 3271 flow [2022-07-22 21:17:06,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 337 transitions, 3183 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-07-22 21:17:06,672 INFO L242 Difference]: Finished difference. Result has 268 places, 267 transitions, 2534 flow [2022-07-22 21:17:06,672 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2266, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2534, PETRI_PLACES=268, PETRI_TRANSITIONS=267} [2022-07-22 21:17:06,673 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 108 predicate places. [2022-07-22 21:17:06,673 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 267 transitions, 2534 flow [2022-07-22 21:17:06,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 124.9090909090909) internal successors, (1374), 11 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:06,674 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:06,674 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:06,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:17:06,674 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:06,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:06,675 INFO L85 PathProgramCache]: Analyzing trace with hash 724432640, now seen corresponding path program 1 times [2022-07-22 21:17:06,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:06,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055032577] [2022-07-22 21:17:06,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:06,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:06,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:06,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055032577] [2022-07-22 21:17:06,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055032577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:06,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:06,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:17:06,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923414016] [2022-07-22 21:17:06,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:06,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:17:06,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:06,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:17:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:17:06,792 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-22 21:17:06,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 267 transitions, 2534 flow. Second operand has 10 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:06,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:06,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-22 21:17:06,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:07,612 INFO L129 PetriNetUnfolder]: 1488/4058 cut-off events. [2022-07-22 21:17:07,612 INFO L130 PetriNetUnfolder]: For 27735/27847 co-relation queries the response was YES. [2022-07-22 21:17:07,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15095 conditions, 4058 events. 1488/4058 cut-off events. For 27735/27847 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 34873 event pairs, 160 based on Foata normal form. 124/4053 useless extension candidates. Maximal degree in co-relation 14789. Up to 994 conditions per place. [2022-07-22 21:17:07,648 INFO L132 encePairwiseOnDemand]: 166/183 looper letters, 175 selfloop transitions, 65 changer transitions 36/386 dead transitions. [2022-07-22 21:17:07,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 386 transitions, 4047 flow [2022-07-22 21:17:07,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:17:07,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:17:07,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1639 transitions. [2022-07-22 21:17:07,651 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7463570127504554 [2022-07-22 21:17:07,651 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1639 transitions. [2022-07-22 21:17:07,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1639 transitions. [2022-07-22 21:17:07,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:07,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1639 transitions. [2022-07-22 21:17:07,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 136.58333333333334) internal successors, (1639), 12 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:07,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:07,657 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:07,657 INFO L186 Difference]: Start difference. First operand has 268 places, 267 transitions, 2534 flow. Second operand 12 states and 1639 transitions. [2022-07-22 21:17:07,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 386 transitions, 4047 flow [2022-07-22 21:17:07,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 386 transitions, 3877 flow, removed 33 selfloop flow, removed 9 redundant places. [2022-07-22 21:17:07,757 INFO L242 Difference]: Finished difference. Result has 275 places, 275 transitions, 2698 flow [2022-07-22 21:17:07,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2410, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2698, PETRI_PLACES=275, PETRI_TRANSITIONS=275} [2022-07-22 21:17:07,758 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 115 predicate places. [2022-07-22 21:17:07,758 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 275 transitions, 2698 flow [2022-07-22 21:17:07,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:07,759 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:07,759 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:07,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:17:07,759 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:07,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:07,759 INFO L85 PathProgramCache]: Analyzing trace with hash 399981210, now seen corresponding path program 1 times [2022-07-22 21:17:07,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:07,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703647578] [2022-07-22 21:17:07,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:07,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:07,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:07,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:07,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703647578] [2022-07-22 21:17:07,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703647578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:07,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:07,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:17:07,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278954474] [2022-07-22 21:17:07,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:07,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:17:07,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:07,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:17:07,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:17:07,906 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-22 21:17:07,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 275 transitions, 2698 flow. Second operand has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:07,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:07,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-22 21:17:07,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:08,887 INFO L129 PetriNetUnfolder]: 1256/3667 cut-off events. [2022-07-22 21:17:08,887 INFO L130 PetriNetUnfolder]: For 29670/29782 co-relation queries the response was YES. [2022-07-22 21:17:08,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14376 conditions, 3667 events. 1256/3667 cut-off events. For 29670/29782 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 31813 event pairs, 128 based on Foata normal form. 115/3662 useless extension candidates. Maximal degree in co-relation 14064. Up to 537 conditions per place. [2022-07-22 21:17:08,910 INFO L132 encePairwiseOnDemand]: 162/183 looper letters, 162 selfloop transitions, 76 changer transitions 36/384 dead transitions. [2022-07-22 21:17:08,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 384 transitions, 4022 flow [2022-07-22 21:17:08,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 21:17:08,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-22 21:17:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2146 transitions. [2022-07-22 21:17:08,914 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7329234972677595 [2022-07-22 21:17:08,914 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2146 transitions. [2022-07-22 21:17:08,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2146 transitions. [2022-07-22 21:17:08,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:08,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2146 transitions. [2022-07-22 21:17:08,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 134.125) internal successors, (2146), 16 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:08,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:08,921 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:08,922 INFO L186 Difference]: Start difference. First operand has 275 places, 275 transitions, 2698 flow. Second operand 16 states and 2146 transitions. [2022-07-22 21:17:08,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 384 transitions, 4022 flow [2022-07-22 21:17:08,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 384 transitions, 3858 flow, removed 40 selfloop flow, removed 5 redundant places. [2022-07-22 21:17:08,996 INFO L242 Difference]: Finished difference. Result has 289 places, 277 transitions, 2788 flow [2022-07-22 21:17:08,996 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2557, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2788, PETRI_PLACES=289, PETRI_TRANSITIONS=277} [2022-07-22 21:17:08,997 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 129 predicate places. [2022-07-22 21:17:08,997 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 277 transitions, 2788 flow [2022-07-22 21:17:08,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:08,997 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:08,997 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:08,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:17:08,998 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:08,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1076776630, now seen corresponding path program 2 times [2022-07-22 21:17:08,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:08,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217593913] [2022-07-22 21:17:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:09,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:09,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:09,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217593913] [2022-07-22 21:17:09,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217593913] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:09,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:09,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 21:17:09,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763879894] [2022-07-22 21:17:09,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:09,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 21:17:09,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:09,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 21:17:09,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 21:17:09,138 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-22 21:17:09,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 277 transitions, 2788 flow. Second operand has 10 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:09,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:09,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-22 21:17:09,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:09,855 INFO L129 PetriNetUnfolder]: 1179/3402 cut-off events. [2022-07-22 21:17:09,855 INFO L130 PetriNetUnfolder]: For 32410/32457 co-relation queries the response was YES. [2022-07-22 21:17:09,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13446 conditions, 3402 events. 1179/3402 cut-off events. For 32410/32457 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 28893 event pairs, 236 based on Foata normal form. 57/3338 useless extension candidates. Maximal degree in co-relation 13119. Up to 1010 conditions per place. [2022-07-22 21:17:09,884 INFO L132 encePairwiseOnDemand]: 167/183 looper letters, 157 selfloop transitions, 74 changer transitions 16/357 dead transitions. [2022-07-22 21:17:09,885 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 357 transitions, 3883 flow [2022-07-22 21:17:09,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:17:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:17:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1618 transitions. [2022-07-22 21:17:09,887 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7367941712204007 [2022-07-22 21:17:09,887 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1618 transitions. [2022-07-22 21:17:09,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1618 transitions. [2022-07-22 21:17:09,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:09,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1618 transitions. [2022-07-22 21:17:09,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.83333333333334) internal successors, (1618), 12 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:09,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:09,892 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:09,892 INFO L186 Difference]: Start difference. First operand has 289 places, 277 transitions, 2788 flow. Second operand 12 states and 1618 transitions. [2022-07-22 21:17:09,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 357 transitions, 3883 flow [2022-07-22 21:17:09,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 357 transitions, 3720 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-07-22 21:17:09,995 INFO L242 Difference]: Finished difference. Result has 293 places, 279 transitions, 2910 flow [2022-07-22 21:17:09,995 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2653, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2910, PETRI_PLACES=293, PETRI_TRANSITIONS=279} [2022-07-22 21:17:09,996 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 133 predicate places. [2022-07-22 21:17:09,996 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 279 transitions, 2910 flow [2022-07-22 21:17:09,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 125.2) internal successors, (1252), 10 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:09,996 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:09,997 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:09,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:17:09,997 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:09,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:09,997 INFO L85 PathProgramCache]: Analyzing trace with hash -180520246, now seen corresponding path program 2 times [2022-07-22 21:17:09,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:09,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135089690] [2022-07-22 21:17:09,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:09,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:10,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:10,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135089690] [2022-07-22 21:17:10,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135089690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:10,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:10,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 21:17:10,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706763234] [2022-07-22 21:17:10,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:10,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 21:17:10,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:10,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 21:17:10,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 21:17:10,138 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 183 [2022-07-22 21:17:10,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 279 transitions, 2910 flow. Second operand has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:10,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:10,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 183 [2022-07-22 21:17:10,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:10,845 INFO L129 PetriNetUnfolder]: 1013/3084 cut-off events. [2022-07-22 21:17:10,845 INFO L130 PetriNetUnfolder]: For 31080/31196 co-relation queries the response was YES. [2022-07-22 21:17:10,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12225 conditions, 3084 events. 1013/3084 cut-off events. For 31080/31196 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 26083 event pairs, 167 based on Foata normal form. 108/3072 useless extension candidates. Maximal degree in co-relation 11945. Up to 828 conditions per place. [2022-07-22 21:17:10,875 INFO L132 encePairwiseOnDemand]: 169/183 looper letters, 147 selfloop transitions, 77 changer transitions 19/348 dead transitions. [2022-07-22 21:17:10,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 348 transitions, 3818 flow [2022-07-22 21:17:10,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 21:17:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-22 21:17:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1982 transitions. [2022-07-22 21:17:10,877 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.722040072859745 [2022-07-22 21:17:10,877 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1982 transitions. [2022-07-22 21:17:10,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1982 transitions. [2022-07-22 21:17:10,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:10,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1982 transitions. [2022-07-22 21:17:10,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 132.13333333333333) internal successors, (1982), 15 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:10,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:10,883 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:10,883 INFO L186 Difference]: Start difference. First operand has 293 places, 279 transitions, 2910 flow. Second operand 15 states and 1982 transitions. [2022-07-22 21:17:10,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 348 transitions, 3818 flow [2022-07-22 21:17:10,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 348 transitions, 3738 flow, removed 1 selfloop flow, removed 7 redundant places. [2022-07-22 21:17:10,986 INFO L242 Difference]: Finished difference. Result has 299 places, 265 transitions, 2857 flow [2022-07-22 21:17:10,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2798, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2857, PETRI_PLACES=299, PETRI_TRANSITIONS=265} [2022-07-22 21:17:10,987 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 139 predicate places. [2022-07-22 21:17:10,987 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 265 transitions, 2857 flow [2022-07-22 21:17:10,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 125.0) internal successors, (1375), 11 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:10,988 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:10,988 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:10,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 21:17:10,988 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:10,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1185028197, now seen corresponding path program 1 times [2022-07-22 21:17:10,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:10,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276352127] [2022-07-22 21:17:10,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:10,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:11,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:11,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:11,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276352127] [2022-07-22 21:17:11,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276352127] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:11,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:11,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:17:11,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938940428] [2022-07-22 21:17:11,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:11,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:17:11,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:11,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:17:11,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:17:11,060 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-22 21:17:11,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 265 transitions, 2857 flow. Second operand has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:11,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:11,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-22 21:17:11,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:11,493 INFO L129 PetriNetUnfolder]: 642/2286 cut-off events. [2022-07-22 21:17:11,494 INFO L130 PetriNetUnfolder]: For 21042/21082 co-relation queries the response was YES. [2022-07-22 21:17:11,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8633 conditions, 2286 events. 642/2286 cut-off events. For 21042/21082 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 18103 event pairs, 93 based on Foata normal form. 24/2240 useless extension candidates. Maximal degree in co-relation 8393. Up to 315 conditions per place. [2022-07-22 21:17:11,513 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 108 selfloop transitions, 37 changer transitions 60/340 dead transitions. [2022-07-22 21:17:11,513 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 340 transitions, 3843 flow [2022-07-22 21:17:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:17:11,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:17:11,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1633 transitions. [2022-07-22 21:17:11,515 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8112270243417784 [2022-07-22 21:17:11,515 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1633 transitions. [2022-07-22 21:17:11,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1633 transitions. [2022-07-22 21:17:11,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:11,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1633 transitions. [2022-07-22 21:17:11,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 148.45454545454547) internal successors, (1633), 11 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:11,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:11,518 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:11,519 INFO L186 Difference]: Start difference. First operand has 299 places, 265 transitions, 2857 flow. Second operand 11 states and 1633 transitions. [2022-07-22 21:17:11,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 340 transitions, 3843 flow [2022-07-22 21:17:11,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 340 transitions, 3512 flow, removed 31 selfloop flow, removed 20 redundant places. [2022-07-22 21:17:11,601 INFO L242 Difference]: Finished difference. Result has 287 places, 238 transitions, 2229 flow [2022-07-22 21:17:11,601 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2584, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2229, PETRI_PLACES=287, PETRI_TRANSITIONS=238} [2022-07-22 21:17:11,602 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 127 predicate places. [2022-07-22 21:17:11,602 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 238 transitions, 2229 flow [2022-07-22 21:17:11,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:11,602 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:11,603 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:11,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 21:17:11,603 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:11,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:11,604 INFO L85 PathProgramCache]: Analyzing trace with hash -848613193, now seen corresponding path program 2 times [2022-07-22 21:17:11,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:11,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725935966] [2022-07-22 21:17:11,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:11,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:11,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:11,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725935966] [2022-07-22 21:17:11,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725935966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:11,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:11,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:17:11,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852630681] [2022-07-22 21:17:11,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:11,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:17:11,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:11,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:17:11,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:17:11,694 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-22 21:17:11,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 238 transitions, 2229 flow. Second operand has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:11,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:11,695 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-22 21:17:11,695 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:12,103 INFO L129 PetriNetUnfolder]: 559/1905 cut-off events. [2022-07-22 21:17:12,104 INFO L130 PetriNetUnfolder]: For 15355/15423 co-relation queries the response was YES. [2022-07-22 21:17:12,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7089 conditions, 1905 events. 559/1905 cut-off events. For 15355/15423 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 14268 event pairs, 80 based on Foata normal form. 38/1862 useless extension candidates. Maximal degree in co-relation 6960. Up to 333 conditions per place. [2022-07-22 21:17:12,119 INFO L132 encePairwiseOnDemand]: 171/183 looper letters, 110 selfloop transitions, 45 changer transitions 27/317 dead transitions. [2022-07-22 21:17:12,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 317 transitions, 3294 flow [2022-07-22 21:17:12,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:17:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:17:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1769 transitions. [2022-07-22 21:17:12,121 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8055555555555556 [2022-07-22 21:17:12,121 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1769 transitions. [2022-07-22 21:17:12,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1769 transitions. [2022-07-22 21:17:12,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:12,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1769 transitions. [2022-07-22 21:17:12,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.41666666666666) internal successors, (1769), 12 states have internal predecessors, (1769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,125 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,125 INFO L186 Difference]: Start difference. First operand has 287 places, 238 transitions, 2229 flow. Second operand 12 states and 1769 transitions. [2022-07-22 21:17:12,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 317 transitions, 3294 flow [2022-07-22 21:17:12,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 317 transitions, 2902 flow, removed 48 selfloop flow, removed 29 redundant places. [2022-07-22 21:17:12,155 INFO L242 Difference]: Finished difference. Result has 275 places, 250 transitions, 2203 flow [2022-07-22 21:17:12,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2203, PETRI_PLACES=275, PETRI_TRANSITIONS=250} [2022-07-22 21:17:12,155 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 115 predicate places. [2022-07-22 21:17:12,156 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 250 transitions, 2203 flow [2022-07-22 21:17:12,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,156 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:12,156 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:12,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 21:17:12,156 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:12,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:12,157 INFO L85 PathProgramCache]: Analyzing trace with hash -373271357, now seen corresponding path program 3 times [2022-07-22 21:17:12,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:12,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211460733] [2022-07-22 21:17:12,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:12,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:12,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:12,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:12,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211460733] [2022-07-22 21:17:12,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211460733] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:12,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:12,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:17:12,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604791561] [2022-07-22 21:17:12,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:12,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:17:12,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:12,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:17:12,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:17:12,257 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-22 21:17:12,258 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 250 transitions, 2203 flow. Second operand has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,258 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:12,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-22 21:17:12,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:12,606 INFO L129 PetriNetUnfolder]: 579/2074 cut-off events. [2022-07-22 21:17:12,606 INFO L130 PetriNetUnfolder]: For 13499/13584 co-relation queries the response was YES. [2022-07-22 21:17:12,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7176 conditions, 2074 events. 579/2074 cut-off events. For 13499/13584 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16172 event pairs, 89 based on Foata normal form. 59/2039 useless extension candidates. Maximal degree in co-relation 6640. Up to 322 conditions per place. [2022-07-22 21:17:12,622 INFO L132 encePairwiseOnDemand]: 172/183 looper letters, 105 selfloop transitions, 52 changer transitions 42/334 dead transitions. [2022-07-22 21:17:12,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 334 transitions, 3294 flow [2022-07-22 21:17:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:17:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:17:12,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1773 transitions. [2022-07-22 21:17:12,624 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8073770491803278 [2022-07-22 21:17:12,624 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1773 transitions. [2022-07-22 21:17:12,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1773 transitions. [2022-07-22 21:17:12,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:12,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1773 transitions. [2022-07-22 21:17:12,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.75) internal successors, (1773), 12 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,629 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,630 INFO L186 Difference]: Start difference. First operand has 275 places, 250 transitions, 2203 flow. Second operand 12 states and 1773 transitions. [2022-07-22 21:17:12,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 334 transitions, 3294 flow [2022-07-22 21:17:12,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 334 transitions, 3220 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-07-22 21:17:12,661 INFO L242 Difference]: Finished difference. Result has 287 places, 256 transitions, 2359 flow [2022-07-22 21:17:12,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2359, PETRI_PLACES=287, PETRI_TRANSITIONS=256} [2022-07-22 21:17:12,661 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 127 predicate places. [2022-07-22 21:17:12,662 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 256 transitions, 2359 flow [2022-07-22 21:17:12,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,662 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:12,662 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:12,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 21:17:12,662 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:12,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:12,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1745939257, now seen corresponding path program 4 times [2022-07-22 21:17:12,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:12,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640143182] [2022-07-22 21:17:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:12,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:12,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:12,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640143182] [2022-07-22 21:17:12,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640143182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:12,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:12,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:17:12,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925066031] [2022-07-22 21:17:12,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:12,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:17:12,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:12,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:17:12,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:17:12,712 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 183 [2022-07-22 21:17:12,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 256 transitions, 2359 flow. Second operand has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:12,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:12,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 183 [2022-07-22 21:17:12,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:12,984 INFO L129 PetriNetUnfolder]: 458/2031 cut-off events. [2022-07-22 21:17:12,985 INFO L130 PetriNetUnfolder]: For 15436/15532 co-relation queries the response was YES. [2022-07-22 21:17:12,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6964 conditions, 2031 events. 458/2031 cut-off events. For 15436/15532 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 16352 event pairs, 107 based on Foata normal form. 51/1967 useless extension candidates. Maximal degree in co-relation 6708. Up to 380 conditions per place. [2022-07-22 21:17:13,004 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 93 selfloop transitions, 10 changer transitions 7/279 dead transitions. [2022-07-22 21:17:13,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 279 transitions, 2798 flow [2022-07-22 21:17:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:17:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:17:13,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 643 transitions. [2022-07-22 21:17:13,006 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8784153005464481 [2022-07-22 21:17:13,006 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 643 transitions. [2022-07-22 21:17:13,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 643 transitions. [2022-07-22 21:17:13,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:13,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 643 transitions. [2022-07-22 21:17:13,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.75) internal successors, (643), 4 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:13,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:13,007 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:13,007 INFO L186 Difference]: Start difference. First operand has 287 places, 256 transitions, 2359 flow. Second operand 4 states and 643 transitions. [2022-07-22 21:17:13,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 279 transitions, 2798 flow [2022-07-22 21:17:13,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 279 transitions, 2674 flow, removed 11 selfloop flow, removed 8 redundant places. [2022-07-22 21:17:13,042 INFO L242 Difference]: Finished difference. Result has 284 places, 255 transitions, 2275 flow [2022-07-22 21:17:13,042 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2241, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2275, PETRI_PLACES=284, PETRI_TRANSITIONS=255} [2022-07-22 21:17:13,042 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 124 predicate places. [2022-07-22 21:17:13,043 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 255 transitions, 2275 flow [2022-07-22 21:17:13,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.75) internal successors, (615), 4 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:13,043 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:13,043 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:13,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 21:17:13,043 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:13,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1448459419, now seen corresponding path program 5 times [2022-07-22 21:17:13,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:13,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301395728] [2022-07-22 21:17:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:13,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:13,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:13,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301395728] [2022-07-22 21:17:13,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301395728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:13,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:13,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:17:13,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511179397] [2022-07-22 21:17:13,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:13,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:17:13,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:13,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:17:13,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:17:13,127 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-22 21:17:13,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 255 transitions, 2275 flow. Second operand has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:13,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:13,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-22 21:17:13,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:13,592 INFO L129 PetriNetUnfolder]: 535/2116 cut-off events. [2022-07-22 21:17:13,592 INFO L130 PetriNetUnfolder]: For 15302/15465 co-relation queries the response was YES. [2022-07-22 21:17:13,606 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 2116 events. 535/2116 cut-off events. For 15302/15465 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 16927 event pairs, 96 based on Foata normal form. 100/2108 useless extension candidates. Maximal degree in co-relation 7162. Up to 305 conditions per place. [2022-07-22 21:17:13,611 INFO L132 encePairwiseOnDemand]: 172/183 looper letters, 100 selfloop transitions, 52 changer transitions 50/337 dead transitions. [2022-07-22 21:17:13,611 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 337 transitions, 3472 flow [2022-07-22 21:17:13,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:17:13,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:17:13,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2052 transitions. [2022-07-22 21:17:13,613 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8009367681498829 [2022-07-22 21:17:13,613 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2052 transitions. [2022-07-22 21:17:13,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2052 transitions. [2022-07-22 21:17:13,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:13,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2052 transitions. [2022-07-22 21:17:13,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 146.57142857142858) internal successors, (2052), 14 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:13,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:13,619 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:13,619 INFO L186 Difference]: Start difference. First operand has 284 places, 255 transitions, 2275 flow. Second operand 14 states and 2052 transitions. [2022-07-22 21:17:13,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 337 transitions, 3472 flow [2022-07-22 21:17:13,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 337 transitions, 3400 flow, removed 27 selfloop flow, removed 4 redundant places. [2022-07-22 21:17:13,657 INFO L242 Difference]: Finished difference. Result has 299 places, 255 transitions, 2431 flow [2022-07-22 21:17:13,658 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2431, PETRI_PLACES=299, PETRI_TRANSITIONS=255} [2022-07-22 21:17:13,658 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 139 predicate places. [2022-07-22 21:17:13,658 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 255 transitions, 2431 flow [2022-07-22 21:17:13,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:13,659 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:13,659 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:13,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 21:17:13,659 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:13,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:13,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2093478427, now seen corresponding path program 1 times [2022-07-22 21:17:13,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:13,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179535622] [2022-07-22 21:17:13,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:13,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:13,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:13,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:13,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179535622] [2022-07-22 21:17:13,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179535622] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:13,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:13,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:17:13,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948299200] [2022-07-22 21:17:13,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:13,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:17:13,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:13,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:17:13,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:17:13,738 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-22 21:17:13,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 255 transitions, 2431 flow. Second operand has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:13,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:13,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-22 21:17:13,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:14,100 INFO L129 PetriNetUnfolder]: 461/1923 cut-off events. [2022-07-22 21:17:14,100 INFO L130 PetriNetUnfolder]: For 16276/16448 co-relation queries the response was YES. [2022-07-22 21:17:14,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7106 conditions, 1923 events. 461/1923 cut-off events. For 16276/16448 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 14829 event pairs, 91 based on Foata normal form. 112/1934 useless extension candidates. Maximal degree in co-relation 6766. Up to 284 conditions per place. [2022-07-22 21:17:14,112 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 92 selfloop transitions, 39 changer transitions 47/304 dead transitions. [2022-07-22 21:17:14,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 304 transitions, 3211 flow [2022-07-22 21:17:14,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:17:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:17:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1605 transitions. [2022-07-22 21:17:14,115 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.797317436661699 [2022-07-22 21:17:14,115 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1605 transitions. [2022-07-22 21:17:14,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1605 transitions. [2022-07-22 21:17:14,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:14,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1605 transitions. [2022-07-22 21:17:14,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 145.9090909090909) internal successors, (1605), 11 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:14,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:14,120 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:14,120 INFO L186 Difference]: Start difference. First operand has 299 places, 255 transitions, 2431 flow. Second operand 11 states and 1605 transitions. [2022-07-22 21:17:14,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 304 transitions, 3211 flow [2022-07-22 21:17:14,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 304 transitions, 3080 flow, removed 15 selfloop flow, removed 13 redundant places. [2022-07-22 21:17:14,162 INFO L242 Difference]: Finished difference. Result has 298 places, 229 transitions, 1957 flow [2022-07-22 21:17:14,163 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2309, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1957, PETRI_PLACES=298, PETRI_TRANSITIONS=229} [2022-07-22 21:17:14,163 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 138 predicate places. [2022-07-22 21:17:14,163 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 229 transitions, 1957 flow [2022-07-22 21:17:14,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:14,164 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:14,164 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:14,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 21:17:14,164 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:14,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:14,165 INFO L85 PathProgramCache]: Analyzing trace with hash -733823789, now seen corresponding path program 2 times [2022-07-22 21:17:14,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:14,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538110712] [2022-07-22 21:17:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:14,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:14,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:14,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538110712] [2022-07-22 21:17:14,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538110712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:14,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:14,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:17:14,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608573732] [2022-07-22 21:17:14,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:14,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:17:14,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:14,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:17:14,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:17:14,256 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-22 21:17:14,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 229 transitions, 1957 flow. Second operand has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:14,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:14,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-22 21:17:14,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:14,603 INFO L129 PetriNetUnfolder]: 319/1457 cut-off events. [2022-07-22 21:17:14,603 INFO L130 PetriNetUnfolder]: For 10135/10271 co-relation queries the response was YES. [2022-07-22 21:17:14,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5210 conditions, 1457 events. 319/1457 cut-off events. For 10135/10271 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10346 event pairs, 53 based on Foata normal form. 111/1477 useless extension candidates. Maximal degree in co-relation 4852. Up to 148 conditions per place. [2022-07-22 21:17:14,616 INFO L132 encePairwiseOnDemand]: 171/183 looper letters, 93 selfloop transitions, 42 changer transitions 37/291 dead transitions. [2022-07-22 21:17:14,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 291 transitions, 2936 flow [2022-07-22 21:17:14,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 21:17:14,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-22 21:17:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1754 transitions. [2022-07-22 21:17:14,618 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7987249544626593 [2022-07-22 21:17:14,618 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1754 transitions. [2022-07-22 21:17:14,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1754 transitions. [2022-07-22 21:17:14,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:14,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1754 transitions. [2022-07-22 21:17:14,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.16666666666666) internal successors, (1754), 12 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:14,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:14,622 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:14,622 INFO L186 Difference]: Start difference. First operand has 298 places, 229 transitions, 1957 flow. Second operand 12 states and 1754 transitions. [2022-07-22 21:17:14,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 291 transitions, 2936 flow [2022-07-22 21:17:14,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 291 transitions, 2463 flow, removed 35 selfloop flow, removed 36 redundant places. [2022-07-22 21:17:14,646 INFO L242 Difference]: Finished difference. Result has 277 places, 226 transitions, 1753 flow [2022-07-22 21:17:14,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1753, PETRI_PLACES=277, PETRI_TRANSITIONS=226} [2022-07-22 21:17:14,647 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 117 predicate places. [2022-07-22 21:17:14,647 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 226 transitions, 1753 flow [2022-07-22 21:17:14,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:14,648 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:14,648 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:14,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 21:17:14,648 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash 483175112, now seen corresponding path program 1 times [2022-07-22 21:17:14,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:14,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131011261] [2022-07-22 21:17:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:14,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:14,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:14,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:14,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:14,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131011261] [2022-07-22 21:17:14,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131011261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:14,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:14,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:17:14,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217721418] [2022-07-22 21:17:14,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:14,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:17:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:14,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:17:14,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:17:14,747 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-22 21:17:14,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 226 transitions, 1753 flow. Second operand has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:14,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:14,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-22 21:17:14,748 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:15,041 INFO L129 PetriNetUnfolder]: 235/1082 cut-off events. [2022-07-22 21:17:15,041 INFO L130 PetriNetUnfolder]: For 5529/5658 co-relation queries the response was YES. [2022-07-22 21:17:15,048 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3562 conditions, 1082 events. 235/1082 cut-off events. For 5529/5658 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6727 event pairs, 52 based on Foata normal form. 99/1095 useless extension candidates. Maximal degree in co-relation 3482. Up to 140 conditions per place. [2022-07-22 21:17:15,050 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 46 selfloop transitions, 19 changer transitions 83/254 dead transitions. [2022-07-22 21:17:15,051 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 254 transitions, 2280 flow [2022-07-22 21:17:15,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:17:15,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:17:15,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1447 transitions. [2022-07-22 21:17:15,053 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7907103825136612 [2022-07-22 21:17:15,053 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1447 transitions. [2022-07-22 21:17:15,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1447 transitions. [2022-07-22 21:17:15,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:15,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1447 transitions. [2022-07-22 21:17:15,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.7) internal successors, (1447), 10 states have internal predecessors, (1447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,058 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 183.0) internal successors, (2013), 11 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,058 INFO L186 Difference]: Start difference. First operand has 277 places, 226 transitions, 1753 flow. Second operand 10 states and 1447 transitions. [2022-07-22 21:17:15,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 254 transitions, 2280 flow [2022-07-22 21:17:15,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 254 transitions, 2162 flow, removed 19 selfloop flow, removed 12 redundant places. [2022-07-22 21:17:15,083 INFO L242 Difference]: Finished difference. Result has 270 places, 162 transitions, 932 flow [2022-07-22 21:17:15,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=932, PETRI_PLACES=270, PETRI_TRANSITIONS=162} [2022-07-22 21:17:15,084 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 110 predicate places. [2022-07-22 21:17:15,084 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 162 transitions, 932 flow [2022-07-22 21:17:15,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.625) internal successors, (1125), 8 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,084 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:15,085 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:15,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 21:17:15,085 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:15,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1868277023, now seen corresponding path program 3 times [2022-07-22 21:17:15,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:15,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889692662] [2022-07-22 21:17:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:15,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:15,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889692662] [2022-07-22 21:17:15,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889692662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:15,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:15,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:17:15,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435708972] [2022-07-22 21:17:15,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:15,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:17:15,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:15,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:17:15,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:17:15,201 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-22 21:17:15,202 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 162 transitions, 932 flow. Second operand has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,202 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:15,202 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-22 21:17:15,202 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:15,422 INFO L129 PetriNetUnfolder]: 151/724 cut-off events. [2022-07-22 21:17:15,423 INFO L130 PetriNetUnfolder]: For 3114/3143 co-relation queries the response was YES. [2022-07-22 21:17:15,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 724 events. 151/724 cut-off events. For 3114/3143 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 3906 event pairs, 46 based on Foata normal form. 15/682 useless extension candidates. Maximal degree in co-relation 2158. Up to 84 conditions per place. [2022-07-22 21:17:15,428 INFO L132 encePairwiseOnDemand]: 172/183 looper letters, 44 selfloop transitions, 24 changer transitions 30/204 dead transitions. [2022-07-22 21:17:15,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 204 transitions, 1483 flow [2022-07-22 21:17:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:17:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:17:15,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2008 transitions. [2022-07-22 21:17:15,430 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7837626854020296 [2022-07-22 21:17:15,430 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2008 transitions. [2022-07-22 21:17:15,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2008 transitions. [2022-07-22 21:17:15,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:15,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2008 transitions. [2022-07-22 21:17:15,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 143.42857142857142) internal successors, (2008), 14 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,435 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,435 INFO L186 Difference]: Start difference. First operand has 270 places, 162 transitions, 932 flow. Second operand 14 states and 2008 transitions. [2022-07-22 21:17:15,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 204 transitions, 1483 flow [2022-07-22 21:17:15,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 204 transitions, 1102 flow, removed 21 selfloop flow, removed 59 redundant places. [2022-07-22 21:17:15,446 INFO L242 Difference]: Finished difference. Result has 203 places, 162 transitions, 739 flow [2022-07-22 21:17:15,446 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=586, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=739, PETRI_PLACES=203, PETRI_TRANSITIONS=162} [2022-07-22 21:17:15,446 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 43 predicate places. [2022-07-22 21:17:15,446 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 162 transitions, 739 flow [2022-07-22 21:17:15,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,447 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:15,447 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:15,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 21:17:15,447 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:15,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash 90273215, now seen corresponding path program 4 times [2022-07-22 21:17:15,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:15,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487367882] [2022-07-22 21:17:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:15,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:15,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:15,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:15,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487367882] [2022-07-22 21:17:15,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487367882] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:15,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:15,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 21:17:15,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131676391] [2022-07-22 21:17:15,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:15,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 21:17:15,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:15,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 21:17:15,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 21:17:15,496 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 183 [2022-07-22 21:17:15,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 162 transitions, 739 flow. Second operand has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:15,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 183 [2022-07-22 21:17:15,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:15,584 INFO L129 PetriNetUnfolder]: 101/583 cut-off events. [2022-07-22 21:17:15,584 INFO L130 PetriNetUnfolder]: For 1984/2008 co-relation queries the response was YES. [2022-07-22 21:17:15,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 583 events. 101/583 cut-off events. For 1984/2008 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2746 event pairs, 31 based on Foata normal form. 17/547 useless extension candidates. Maximal degree in co-relation 1456. Up to 84 conditions per place. [2022-07-22 21:17:15,588 INFO L132 encePairwiseOnDemand]: 180/183 looper letters, 35 selfloop transitions, 8 changer transitions 2/168 dead transitions. [2022-07-22 21:17:15,588 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 168 transitions, 876 flow [2022-07-22 21:17:15,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 21:17:15,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-07-22 21:17:15,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 628 transitions. [2022-07-22 21:17:15,590 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8579234972677595 [2022-07-22 21:17:15,590 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 628 transitions. [2022-07-22 21:17:15,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 628 transitions. [2022-07-22 21:17:15,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:15,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 628 transitions. [2022-07-22 21:17:15,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,592 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,592 INFO L186 Difference]: Start difference. First operand has 203 places, 162 transitions, 739 flow. Second operand 4 states and 628 transitions. [2022-07-22 21:17:15,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 168 transitions, 876 flow [2022-07-22 21:17:15,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 168 transitions, 762 flow, removed 21 selfloop flow, removed 14 redundant places. [2022-07-22 21:17:15,597 INFO L242 Difference]: Finished difference. Result has 190 places, 162 transitions, 668 flow [2022-07-22 21:17:15,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=668, PETRI_PLACES=190, PETRI_TRANSITIONS=162} [2022-07-22 21:17:15,598 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 30 predicate places. [2022-07-22 21:17:15,598 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 162 transitions, 668 flow [2022-07-22 21:17:15,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.0) internal successors, (616), 4 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,598 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:17:15,598 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:15,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-22 21:17:15,599 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-22 21:17:15,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:17:15,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2045095045, now seen corresponding path program 1 times [2022-07-22 21:17:15,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:17:15,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114211463] [2022-07-22 21:17:15,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:17:15,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:17:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:17:15,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:17:15,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:17:15,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114211463] [2022-07-22 21:17:15,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114211463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:17:15,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:17:15,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 21:17:15,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481677632] [2022-07-22 21:17:15,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:17:15,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 21:17:15,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:17:15,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 21:17:15,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 21:17:15,687 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 183 [2022-07-22 21:17:15,688 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 162 transitions, 668 flow. Second operand has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,688 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:17:15,688 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 183 [2022-07-22 21:17:15,688 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:17:15,875 INFO L129 PetriNetUnfolder]: 111/563 cut-off events. [2022-07-22 21:17:15,876 INFO L130 PetriNetUnfolder]: For 1852/1879 co-relation queries the response was YES. [2022-07-22 21:17:15,878 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 563 events. 111/563 cut-off events. For 1852/1879 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 2581 event pairs, 24 based on Foata normal form. 20/531 useless extension candidates. Maximal degree in co-relation 1415. Up to 79 conditions per place. [2022-07-22 21:17:15,879 INFO L132 encePairwiseOnDemand]: 173/183 looper letters, 0 selfloop transitions, 0 changer transitions 178/178 dead transitions. [2022-07-22 21:17:15,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 178 transitions, 937 flow [2022-07-22 21:17:15,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:17:15,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:17:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1287 transitions. [2022-07-22 21:17:15,882 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7814207650273224 [2022-07-22 21:17:15,882 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1287 transitions. [2022-07-22 21:17:15,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1287 transitions. [2022-07-22 21:17:15,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:17:15,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1287 transitions. [2022-07-22 21:17:15,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 143.0) internal successors, (1287), 9 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,886 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 183.0) internal successors, (1830), 10 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,886 INFO L186 Difference]: Start difference. First operand has 190 places, 162 transitions, 668 flow. Second operand 9 states and 1287 transitions. [2022-07-22 21:17:15,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 178 transitions, 937 flow [2022-07-22 21:17:15,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 178 transitions, 914 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-07-22 21:17:15,892 INFO L242 Difference]: Finished difference. Result has 194 places, 0 transitions, 0 flow [2022-07-22 21:17:15,893 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=194, PETRI_TRANSITIONS=0} [2022-07-22 21:17:15,893 INFO L279 CegarLoopForPetriNet]: 160 programPoint places, 34 predicate places. [2022-07-22 21:17:15,893 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 0 transitions, 0 flow [2022-07-22 21:17:15,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.75) internal successors, (1126), 8 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:17:15,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2022-07-22 21:17:15,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2022-07-22 21:17:15,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-07-22 21:17:15,896 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2022-07-22 21:17:15,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2022-07-22 21:17:15,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2022-07-22 21:17:15,897 INFO L805 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2022-07-22 21:17:15,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 21:17:15,897 INFO L356 BasicCegarLoop]: Path program histogram: [5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:17:15,902 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:17:15,902 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:17:15,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:17:15 BasicIcfg [2022-07-22 21:17:15,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:17:15,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:17:15,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:17:15,906 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:17:15,907 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:16:49" (3/4) ... [2022-07-22 21:17:15,909 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 21:17:15,913 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader1 [2022-07-22 21:17:15,913 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader2 [2022-07-22 21:17:15,913 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_updater [2022-07-22 21:17:15,916 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-07-22 21:17:15,916 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-22 21:17:15,916 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 21:17:15,916 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 21:17:15,949 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:17:15,952 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:17:15,952 INFO L158 Benchmark]: Toolchain (without parser) took 27537.98ms. Allocated memory was 98.6MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 66.3MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 737.9MB. Max. memory is 16.1GB. [2022-07-22 21:17:15,953 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:17:15,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.21ms. Allocated memory is still 98.6MB. Free memory was 66.1MB in the beginning and 64.1MB in the end (delta: 2.0MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2022-07-22 21:17:15,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.17ms. Allocated memory is still 98.6MB. Free memory was 64.1MB in the beginning and 61.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:17:15,954 INFO L158 Benchmark]: Boogie Preprocessor took 29.32ms. Allocated memory is still 98.6MB. Free memory was 61.1MB in the beginning and 59.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:17:15,954 INFO L158 Benchmark]: RCFGBuilder took 858.54ms. Allocated memory is still 98.6MB. Free memory was 59.1MB in the beginning and 60.1MB in the end (delta: -920.0kB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-22 21:17:15,954 INFO L158 Benchmark]: TraceAbstraction took 26032.89ms. Allocated memory was 98.6MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 59.6MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 730.3MB. Max. memory is 16.1GB. [2022-07-22 21:17:15,958 INFO L158 Benchmark]: Witness Printer took 45.67ms. Allocated memory is still 2.4GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:17:15,960 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 98.6MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.21ms. Allocated memory is still 98.6MB. Free memory was 66.1MB in the beginning and 64.1MB in the end (delta: 2.0MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.17ms. Allocated memory is still 98.6MB. Free memory was 64.1MB in the beginning and 61.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.32ms. Allocated memory is still 98.6MB. Free memory was 61.1MB in the beginning and 59.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 858.54ms. Allocated memory is still 98.6MB. Free memory was 59.1MB in the beginning and 60.1MB in the end (delta: -920.0kB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 26032.89ms. Allocated memory was 98.6MB in the beginning and 2.4GB in the end (delta: 2.3GB). Free memory was 59.6MB in the beginning and 1.6GB in the end (delta: -1.6GB). Peak memory consumption was 730.3MB. Max. memory is 16.1GB. * Witness Printer took 45.67ms. Allocated memory is still 2.4GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 712]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 719]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 269 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.9s, OverallIterations: 32, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 22.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2508 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2508 mSDsluCounter, 1595 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2902 mSDsCounter, 588 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8026 IncrementalHoareTripleChecker+Invalid, 8614 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 588 mSolverCounterUnsat, 520 mSDtfsCounter, 8026 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 396 GetRequests, 70 SyntacticMatches, 6 SemanticMatches, 320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2910occurred in iteration=20, InterpolantAutomatonStates: 310, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 2690 NumberOfCodeBlocks, 2690 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 2658 ConstructedInterpolants, 0 QuantifiedInterpolants, 14393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 32 InterpolantComputations, 32 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-22 21:17:15,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE