./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/qrcu-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be --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 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:37:48,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:37:48,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:37:48,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:37:48,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:37:48,283 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:37:48,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:37:48,288 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:37:48,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:37:48,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:37:48,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:37:48,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:37:48,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:37:48,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:37:48,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:37:48,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:37:48,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:37:48,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:37:48,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:37:48,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:37:48,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:37:48,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:37:48,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:37:48,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:37:48,324 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:37:48,325 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:37:48,325 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:37:48,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:37:48,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:37:48,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:37:48,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:37:48,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:37:48,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:37:48,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:37:48,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:37:48,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:37:48,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:37:48,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:37:48,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:37:48,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:37:48,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:37:48,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:37:48,397 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:37:48,398 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:37:48,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:37:48,399 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:37:48,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:37:48,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:37:48,408 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:37:48,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:37:48,409 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:37:48,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:37:48,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:37:48,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:37:48,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:37:48,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:37:48,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:37:48,412 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:37:48,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:37:48,413 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:37:48,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:37:48,414 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:37:48,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:37:48,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:37:48,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:37:48,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:37:48,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:37:48,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:37:48,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:37:48,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:37:48,418 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:37:48,420 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:37:48,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:37:48,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:37:48,421 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2021-10-21 19:37:48,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:37:48,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:37:48,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:37:48,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:37:48,852 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:37:48,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/pthread-atomic/qrcu-1.i [2021-10-21 19:37:48,957 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/data/39e6e0508/cb9a368b86af46adb8bfefd25aa16017/FLAGd58cb74db [2021-10-21 19:37:49,651 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:37:49,656 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2021-10-21 19:37:49,687 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/data/39e6e0508/cb9a368b86af46adb8bfefd25aa16017/FLAGd58cb74db [2021-10-21 19:37:49,850 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/data/39e6e0508/cb9a368b86af46adb8bfefd25aa16017 [2021-10-21 19:37:49,856 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:37:49,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:37:49,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:37:49,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:37:49,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:37:49,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:37:49" (1/1) ... [2021-10-21 19:37:49,872 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318e5644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:49, skipping insertion in model container [2021-10-21 19:37:49,873 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:37:49" (1/1) ... [2021-10-21 19:37:49,883 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:37:49,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:37:50,492 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2021-10-21 19:37:50,502 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2021-10-21 19:37:50,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:37:50,560 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:37:50,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2021-10-21 19:37:50,639 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2021-10-21 19:37:50,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:37:50,739 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:37:50,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50 WrapperNode [2021-10-21 19:37:50,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:37:50,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:37:50,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:37:50,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:37:50,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (1/1) ... [2021-10-21 19:37:50,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (1/1) ... [2021-10-21 19:37:50,865 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:37:50,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:37:50,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:37:50,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:37:50,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (1/1) ... [2021-10-21 19:37:50,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (1/1) ... [2021-10-21 19:37:50,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (1/1) ... [2021-10-21 19:37:50,912 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (1/1) ... [2021-10-21 19:37:50,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (1/1) ... [2021-10-21 19:37:50,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (1/1) ... [2021-10-21 19:37:50,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (1/1) ... [2021-10-21 19:37:50,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:37:50,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:37:50,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:37:50,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:37:50,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (1/1) ... [2021-10-21 19:37:50,975 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:37:50,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:37:51,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:37:51,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:37:51,065 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2021-10-21 19:37:51,065 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2021-10-21 19:37:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2021-10-21 19:37:51,066 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2021-10-21 19:37:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-21 19:37:51,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-21 19:37:51,067 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2021-10-21 19:37:51,067 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2021-10-21 19:37:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-21 19:37:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:37:51,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-21 19:37:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:37:51,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:37:51,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:37:51,071 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-21 19:37:52,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:37:52,436 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-21 19:37:52,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:37:52 BoogieIcfgContainer [2021-10-21 19:37:52,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:37:52,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:37:52,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:37:52,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:37:52,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:37:49" (1/3) ... [2021-10-21 19:37:52,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412263da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:37:52, skipping insertion in model container [2021-10-21 19:37:52,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:37:50" (2/3) ... [2021-10-21 19:37:52,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412263da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:37:52, skipping insertion in model container [2021-10-21 19:37:52,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:37:52" (3/3) ... [2021-10-21 19:37:52,452 INFO L111 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2021-10-21 19:37:52,458 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-21 19:37:52,459 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:37:52,459 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-21 19:37:52,459 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-21 19:37:52,527 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,528 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,528 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,528 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,528 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,529 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,529 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,529 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,530 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,530 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,530 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,531 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,531 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,531 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,531 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,533 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,533 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,534 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,534 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,535 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,536 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,536 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,536 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,537 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,538 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,538 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,540 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,540 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,540 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,540 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,541 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,542 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,542 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,542 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,542 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,543 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,543 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,543 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,543 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,544 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,544 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,544 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,544 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,545 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,545 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,545 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,545 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,546 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,546 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,547 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,547 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,547 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,549 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,549 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,550 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,550 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,550 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,550 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,551 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,551 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,551 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,551 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,551 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,552 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,552 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,552 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,552 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,553 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,553 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,553 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,554 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,555 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,555 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,555 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,556 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,556 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,556 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,557 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,557 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,557 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,557 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,558 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,558 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,561 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,562 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,565 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,565 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,566 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,567 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,567 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,568 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,568 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,569 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,569 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,576 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,576 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,577 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,577 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,577 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,577 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,578 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,578 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,578 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,578 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,579 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,579 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,579 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,579 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,580 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,580 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,580 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,580 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,581 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,581 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,581 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,581 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,581 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,582 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,582 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,582 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,583 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,584 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,584 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,584 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,584 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,585 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,585 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,585 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,585 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,585 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,586 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,586 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,586 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,586 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,587 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,587 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,587 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,587 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,588 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,588 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,594 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,594 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,594 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,595 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,595 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,595 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,595 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,596 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,596 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,596 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,596 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,597 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,597 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,598 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,598 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,599 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,599 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,599 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,601 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,602 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,602 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,602 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,602 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,603 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,603 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,603 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,603 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,604 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,604 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,604 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,604 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,605 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,605 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,605 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,605 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,606 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,606 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,606 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,606 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,606 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,607 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,607 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,607 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,607 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,608 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,608 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,609 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,609 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,609 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,609 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,610 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,610 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,610 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,610 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,611 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,611 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,611 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,611 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,612 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,612 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,612 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,613 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,613 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,613 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,613 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,613 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,614 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,614 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,614 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,614 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,615 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,616 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,621 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,622 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,622 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,622 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,622 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,623 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,623 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,623 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,623 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,626 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,628 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,628 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,628 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,629 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,638 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,639 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,639 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,639 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,639 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,640 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,640 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,640 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,640 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,640 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,640 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,641 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,641 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,641 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,641 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,641 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,642 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,642 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,642 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,642 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,643 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,643 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,643 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,643 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,643 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,643 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,643 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,644 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,644 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,644 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,644 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,644 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,644 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,645 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,645 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,645 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,645 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,645 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,645 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,646 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,646 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,646 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,646 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,647 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,647 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,647 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,647 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,647 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,648 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,648 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,648 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,648 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,648 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,649 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,649 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,649 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,649 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,649 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,649 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,650 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,650 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,650 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,650 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,651 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,651 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,651 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,651 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_~readerstart2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,651 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,651 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#in~readerstart2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,652 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,652 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,652 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,652 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_~readerstart2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,653 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,653 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#in~readerstart2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,653 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,653 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,654 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,654 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,654 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,654 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_~readerstart2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,654 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,654 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#in~readerstart2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,655 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,655 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,655 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,655 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,655 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,655 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_~readerstart2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,656 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,656 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#in~readerstart2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,656 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,656 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,656 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,657 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,657 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,657 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,657 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,657 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,658 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,658 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,658 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,658 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,658 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,659 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,659 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,659 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,659 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,659 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,659 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,660 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,660 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,660 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,660 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,660 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,660 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,661 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,661 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,661 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,661 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,661 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,661 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,662 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,662 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,662 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,662 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,666 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,666 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,666 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,667 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,667 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,667 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#in~readerstart2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,667 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,667 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,667 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,668 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,668 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,668 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,668 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,668 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,668 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,669 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,669 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,669 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,669 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_~readerstart2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,669 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,670 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,670 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,670 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,670 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,670 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,670 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,671 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,671 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,671 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,671 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,671 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,671 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,672 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,672 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,672 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,674 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,675 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,675 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,675 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,675 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,675 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,676 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,676 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,676 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,676 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,676 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,676 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,677 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,677 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,677 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,677 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,677 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,678 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,678 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,679 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,680 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,680 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,680 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,680 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,680 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,681 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,681 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,681 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,681 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,681 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,681 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,682 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,682 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,682 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,682 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,682 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,682 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,683 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-21 19:37:52,691 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-21 19:37:52,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:37:52,761 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:37:52,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-21 19:37:52,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 380 flow [2021-10-21 19:37:52,864 INFO L129 PetriNetUnfolder]: 18/175 cut-off events. [2021-10-21 19:37:52,865 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 19:37:52,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 175 events. 18/175 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 355 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 134. Up to 4 conditions per place. [2021-10-21 19:37:52,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 380 flow [2021-10-21 19:37:52,903 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 164 transitions, 343 flow [2021-10-21 19:37:52,936 INFO L129 PetriNetUnfolder]: 9/117 cut-off events. [2021-10-21 19:37:52,937 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-21 19:37:52,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:37:52,938 INFO L254 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] [2021-10-21 19:37:52,938 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:37:52,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:52,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1955550272, now seen corresponding path program 1 times [2021-10-21 19:37:52,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:52,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111477080] [2021-10-21 19:37:52,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:52,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:53,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:53,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:53,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111477080] [2021-10-21 19:37:53,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111477080] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:53,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:53,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:37:53,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575835120] [2021-10-21 19:37:53,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:53,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:53,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:53,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:53,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 178 [2021-10-21 19:37:53,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 164 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:53,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:37:53,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 178 [2021-10-21 19:37:53,392 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:37:53,538 INFO L129 PetriNetUnfolder]: 11/173 cut-off events. [2021-10-21 19:37:53,538 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-21 19:37:53,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 173 events. 11/173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 352 event pairs, 0 based on Foata normal form. 28/185 useless extension candidates. Maximal degree in co-relation 158. Up to 13 conditions per place. [2021-10-21 19:37:53,549 INFO L132 encePairwiseOnDemand]: 169/178 looper letters, 13 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2021-10-21 19:37:53,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 159 transitions, 363 flow [2021-10-21 19:37:53,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:53,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:37:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2021-10-21 19:37:53,575 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9363295880149812 [2021-10-21 19:37:53,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2021-10-21 19:37:53,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2021-10-21 19:37:53,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:37:53,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2021-10-21 19:37:53,589 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) [2021-10-21 19:37:53,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:53,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:53,601 INFO L186 Difference]: Start difference. First operand has 156 places, 164 transitions, 343 flow. Second operand 3 states and 500 transitions. [2021-10-21 19:37:53,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 159 transitions, 363 flow [2021-10-21 19:37:53,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 159 transitions, 354 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-21 19:37:53,620 INFO L242 Difference]: Finished difference. Result has 155 places, 159 transitions, 336 flow [2021-10-21 19:37:53,623 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=336, PETRI_PLACES=155, PETRI_TRANSITIONS=159} [2021-10-21 19:37:53,624 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, -1 predicate places. [2021-10-21 19:37:53,624 INFO L470 AbstractCegarLoop]: Abstraction has has 155 places, 159 transitions, 336 flow [2021-10-21 19:37:53,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:53,625 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:37:53,626 INFO L254 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] [2021-10-21 19:37:53,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:37:53,626 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:37:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:53,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1930528012, now seen corresponding path program 1 times [2021-10-21 19:37:53,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:53,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538052358] [2021-10-21 19:37:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:53,628 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:53,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:53,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:53,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538052358] [2021-10-21 19:37:53,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538052358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:53,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:53,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:37:53,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530630158] [2021-10-21 19:37:53,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:53,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:53,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:53,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:53,965 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 178 [2021-10-21 19:37:53,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 159 transitions, 336 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:53,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:37:53,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 178 [2021-10-21 19:37:53,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:37:54,063 INFO L129 PetriNetUnfolder]: 22/282 cut-off events. [2021-10-21 19:37:54,064 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-21 19:37:54,067 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 282 events. 22/282 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 935 event pairs, 3 based on Foata normal form. 2/261 useless extension candidates. Maximal degree in co-relation 267. Up to 13 conditions per place. [2021-10-21 19:37:54,070 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 4 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2021-10-21 19:37:54,070 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 160 transitions, 350 flow [2021-10-21 19:37:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:54,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:37:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2021-10-21 19:37:54,074 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.951310861423221 [2021-10-21 19:37:54,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2021-10-21 19:37:54,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2021-10-21 19:37:54,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:37:54,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2021-10-21 19:37:54,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:54,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:54,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:54,082 INFO L186 Difference]: Start difference. First operand has 155 places, 159 transitions, 336 flow. Second operand 3 states and 508 transitions. [2021-10-21 19:37:54,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 160 transitions, 350 flow [2021-10-21 19:37:54,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 160 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 19:37:54,090 INFO L242 Difference]: Finished difference. Result has 157 places, 159 transitions, 342 flow [2021-10-21 19:37:54,091 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=342, PETRI_PLACES=157, PETRI_TRANSITIONS=159} [2021-10-21 19:37:54,092 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 1 predicate places. [2021-10-21 19:37:54,092 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 159 transitions, 342 flow [2021-10-21 19:37:54,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:54,093 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:37:54,093 INFO L254 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] [2021-10-21 19:37:54,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:37:54,094 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:37:54,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:54,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1547913360, now seen corresponding path program 1 times [2021-10-21 19:37:54,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:54,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717174690] [2021-10-21 19:37:54,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:54,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:54,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:54,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:54,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717174690] [2021-10-21 19:37:54,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717174690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:54,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:54,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:37:54,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304228101] [2021-10-21 19:37:54,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:37:54,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:54,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:37:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:37:54,332 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 178 [2021-10-21 19:37:54,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 159 transitions, 342 flow. Second operand has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:54,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:37:54,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 178 [2021-10-21 19:37:54,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:37:54,908 INFO L129 PetriNetUnfolder]: 375/1365 cut-off events. [2021-10-21 19:37:54,908 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-21 19:37:54,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2018 conditions, 1365 events. 375/1365 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 9967 event pairs, 58 based on Foata normal form. 0/1257 useless extension candidates. Maximal degree in co-relation 1955. Up to 285 conditions per place. [2021-10-21 19:37:54,938 INFO L132 encePairwiseOnDemand]: 171/178 looper letters, 45 selfloop transitions, 11 changer transitions 2/191 dead transitions. [2021-10-21 19:37:54,938 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 191 transitions, 524 flow [2021-10-21 19:37:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:37:54,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:37:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1082 transitions. [2021-10-21 19:37:54,945 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8683788121990369 [2021-10-21 19:37:54,945 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1082 transitions. [2021-10-21 19:37:54,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1082 transitions. [2021-10-21 19:37:54,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:37:54,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1082 transitions. [2021-10-21 19:37:54,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.57142857142858) internal successors, (1082), 7 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:54,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:54,958 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:54,959 INFO L186 Difference]: Start difference. First operand has 157 places, 159 transitions, 342 flow. Second operand 7 states and 1082 transitions. [2021-10-21 19:37:54,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 191 transitions, 524 flow [2021-10-21 19:37:54,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 191 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-21 19:37:54,970 INFO L242 Difference]: Finished difference. Result has 164 places, 168 transitions, 400 flow [2021-10-21 19:37:54,971 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=400, PETRI_PLACES=164, PETRI_TRANSITIONS=168} [2021-10-21 19:37:54,971 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 8 predicate places. [2021-10-21 19:37:54,971 INFO L470 AbstractCegarLoop]: Abstraction has has 164 places, 168 transitions, 400 flow [2021-10-21 19:37:54,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:54,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:37:54,973 INFO L254 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] [2021-10-21 19:37:54,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:37:54,974 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:37:54,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:54,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1536558348, now seen corresponding path program 1 times [2021-10-21 19:37:54,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:54,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113523912] [2021-10-21 19:37:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:54,976 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:55,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:55,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113523912] [2021-10-21 19:37:55,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113523912] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:55,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:55,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:37:55,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133329450] [2021-10-21 19:37:55,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:37:55,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:55,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:37:55,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:37:55,211 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 178 [2021-10-21 19:37:55,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 168 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:55,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:37:55,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 178 [2021-10-21 19:37:55,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:37:56,012 INFO L129 PetriNetUnfolder]: 702/2466 cut-off events. [2021-10-21 19:37:56,012 INFO L130 PetriNetUnfolder]: For 225/237 co-relation queries the response was YES. [2021-10-21 19:37:56,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4140 conditions, 2466 events. 702/2466 cut-off events. For 225/237 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 20694 event pairs, 183 based on Foata normal form. 32/2352 useless extension candidates. Maximal degree in co-relation 4028. Up to 587 conditions per place. [2021-10-21 19:37:56,055 INFO L132 encePairwiseOnDemand]: 168/178 looper letters, 67 selfloop transitions, 18 changer transitions 2/214 dead transitions. [2021-10-21 19:37:56,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 214 transitions, 701 flow [2021-10-21 19:37:56,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:37:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 19:37:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1406 transitions. [2021-10-21 19:37:56,062 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7898876404494382 [2021-10-21 19:37:56,063 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1406 transitions. [2021-10-21 19:37:56,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1406 transitions. [2021-10-21 19:37:56,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:37:56,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1406 transitions. [2021-10-21 19:37:56,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.6) internal successors, (1406), 10 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:56,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:56,080 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:56,080 INFO L186 Difference]: Start difference. First operand has 164 places, 168 transitions, 400 flow. Second operand 10 states and 1406 transitions. [2021-10-21 19:37:56,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 214 transitions, 701 flow [2021-10-21 19:37:56,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 214 transitions, 701 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-21 19:37:56,095 INFO L242 Difference]: Finished difference. Result has 178 places, 184 transitions, 516 flow [2021-10-21 19:37:56,095 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=516, PETRI_PLACES=178, PETRI_TRANSITIONS=184} [2021-10-21 19:37:56,096 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 22 predicate places. [2021-10-21 19:37:56,096 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 184 transitions, 516 flow [2021-10-21 19:37:56,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.57142857142858) internal successors, (956), 7 states have internal predecessors, (956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:56,097 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:37:56,098 INFO L254 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] [2021-10-21 19:37:56,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:37:56,098 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:37:56,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:56,100 INFO L82 PathProgramCache]: Analyzing trace with hash 148677766, now seen corresponding path program 2 times [2021-10-21 19:37:56,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:56,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124807379] [2021-10-21 19:37:56,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:56,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:56,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:56,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:56,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124807379] [2021-10-21 19:37:56,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124807379] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:56,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:56,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:37:56,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465682424] [2021-10-21 19:37:56,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:37:56,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:56,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:37:56,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:37:56,329 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 178 [2021-10-21 19:37:56,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 184 transitions, 516 flow. Second operand has 6 states, 6 states have (on average 139.83333333333334) internal successors, (839), 6 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:56,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:37:56,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 178 [2021-10-21 19:37:56,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:37:57,380 INFO L129 PetriNetUnfolder]: 1098/3180 cut-off events. [2021-10-21 19:37:57,381 INFO L130 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2021-10-21 19:37:57,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5681 conditions, 3180 events. 1098/3180 cut-off events. For 158/158 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 27288 event pairs, 77 based on Foata normal form. 120/3130 useless extension candidates. Maximal degree in co-relation 5535. Up to 1236 conditions per place. [2021-10-21 19:37:57,435 INFO L132 encePairwiseOnDemand]: 160/178 looper letters, 74 selfloop transitions, 31 changer transitions 0/254 dead transitions. [2021-10-21 19:37:57,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 254 transitions, 896 flow [2021-10-21 19:37:57,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:37:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-21 19:37:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1219 transitions. [2021-10-21 19:37:57,442 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8560393258426966 [2021-10-21 19:37:57,442 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1219 transitions. [2021-10-21 19:37:57,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1219 transitions. [2021-10-21 19:37:57,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:37:57,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1219 transitions. [2021-10-21 19:37:57,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.375) internal successors, (1219), 8 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:57,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:57,455 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 178.0) internal successors, (1602), 9 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:57,455 INFO L186 Difference]: Start difference. First operand has 178 places, 184 transitions, 516 flow. Second operand 8 states and 1219 transitions. [2021-10-21 19:37:57,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 254 transitions, 896 flow [2021-10-21 19:37:57,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 254 transitions, 896 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-21 19:37:57,474 INFO L242 Difference]: Finished difference. Result has 191 places, 217 transitions, 763 flow [2021-10-21 19:37:57,475 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=763, PETRI_PLACES=191, PETRI_TRANSITIONS=217} [2021-10-21 19:37:57,476 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 35 predicate places. [2021-10-21 19:37:57,476 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 217 transitions, 763 flow [2021-10-21 19:37:57,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.83333333333334) internal successors, (839), 6 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:57,477 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:37:57,478 INFO L254 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] [2021-10-21 19:37:57,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-21 19:37:57,478 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:37:57,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:57,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1234398556, now seen corresponding path program 1 times [2021-10-21 19:37:57,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:57,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656423415] [2021-10-21 19:37:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:57,480 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:57,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:57,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:57,648 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656423415] [2021-10-21 19:37:57,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656423415] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:57,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:57,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:37:57,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460106877] [2021-10-21 19:37:57,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:37:57,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:57,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:37:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:37:57,654 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 178 [2021-10-21 19:37:57,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 217 transitions, 763 flow. Second operand has 7 states, 7 states have (on average 139.57142857142858) internal successors, (977), 7 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:57,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:37:57,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 178 [2021-10-21 19:37:57,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:37:58,678 INFO L129 PetriNetUnfolder]: 1091/3146 cut-off events. [2021-10-21 19:37:58,678 INFO L130 PetriNetUnfolder]: For 2818/2861 co-relation queries the response was YES. [2021-10-21 19:37:58,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7770 conditions, 3146 events. 1091/3146 cut-off events. For 2818/2861 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 26601 event pairs, 61 based on Foata normal form. 58/3062 useless extension candidates. Maximal degree in co-relation 7460. Up to 880 conditions per place. [2021-10-21 19:37:58,815 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 92 selfloop transitions, 37 changer transitions 0/278 dead transitions. [2021-10-21 19:37:58,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 278 transitions, 1287 flow [2021-10-21 19:37:58,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:37:58,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 19:37:58,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1495 transitions. [2021-10-21 19:37:58,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8398876404494382 [2021-10-21 19:37:58,823 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1495 transitions. [2021-10-21 19:37:58,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1495 transitions. [2021-10-21 19:37:58,825 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:37:58,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1495 transitions. [2021-10-21 19:37:58,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 149.5) internal successors, (1495), 10 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:58,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:58,838 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:58,838 INFO L186 Difference]: Start difference. First operand has 191 places, 217 transitions, 763 flow. Second operand 10 states and 1495 transitions. [2021-10-21 19:37:58,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 278 transitions, 1287 flow [2021-10-21 19:37:58,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 278 transitions, 1287 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-21 19:37:58,865 INFO L242 Difference]: Finished difference. Result has 205 places, 233 transitions, 1002 flow [2021-10-21 19:37:58,866 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1002, PETRI_PLACES=205, PETRI_TRANSITIONS=233} [2021-10-21 19:37:58,867 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 49 predicate places. [2021-10-21 19:37:58,867 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 233 transitions, 1002 flow [2021-10-21 19:37:58,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.57142857142858) internal successors, (977), 7 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:58,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:37:58,868 INFO L254 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] [2021-10-21 19:37:58,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-21 19:37:58,869 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:37:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1457338230, now seen corresponding path program 1 times [2021-10-21 19:37:58,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:58,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374851312] [2021-10-21 19:37:58,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:58,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:58,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:58,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374851312] [2021-10-21 19:37:58,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374851312] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:58,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:58,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:37:58,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667134704] [2021-10-21 19:37:58,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:58,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:58,938 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 178 [2021-10-21 19:37:58,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 233 transitions, 1002 flow. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:58,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:37:58,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 178 [2021-10-21 19:37:58,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:37:59,457 INFO L129 PetriNetUnfolder]: 548/2410 cut-off events. [2021-10-21 19:37:59,457 INFO L130 PetriNetUnfolder]: For 1878/1936 co-relation queries the response was YES. [2021-10-21 19:37:59,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4998 conditions, 2410 events. 548/2410 cut-off events. For 1878/1936 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 22165 event pairs, 35 based on Foata normal form. 15/2283 useless extension candidates. Maximal degree in co-relation 4919. Up to 421 conditions per place. [2021-10-21 19:37:59,513 INFO L132 encePairwiseOnDemand]: 176/178 looper letters, 14 selfloop transitions, 1 changer transitions 0/235 dead transitions. [2021-10-21 19:37:59,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 235 transitions, 1045 flow [2021-10-21 19:37:59,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:37:59,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:37:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2021-10-21 19:37:59,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.951310861423221 [2021-10-21 19:37:59,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2021-10-21 19:37:59,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2021-10-21 19:37:59,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:37:59,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2021-10-21 19:37:59,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:59,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:59,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:59,524 INFO L186 Difference]: Start difference. First operand has 205 places, 233 transitions, 1002 flow. Second operand 3 states and 508 transitions. [2021-10-21 19:37:59,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 235 transitions, 1045 flow [2021-10-21 19:37:59,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 235 transitions, 1024 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-21 19:37:59,548 INFO L242 Difference]: Finished difference. Result has 204 places, 233 transitions, 986 flow [2021-10-21 19:37:59,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=986, PETRI_PLACES=204, PETRI_TRANSITIONS=233} [2021-10-21 19:37:59,549 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 48 predicate places. [2021-10-21 19:37:59,549 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 233 transitions, 986 flow [2021-10-21 19:37:59,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:59,550 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:37:59,550 INFO L254 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] [2021-10-21 19:37:59,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-21 19:37:59,551 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:37:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:37:59,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1942044553, now seen corresponding path program 1 times [2021-10-21 19:37:59,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:37:59,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424185733] [2021-10-21 19:37:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:37:59,553 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:37:59,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:37:59,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:37:59,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:37:59,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424185733] [2021-10-21 19:37:59,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424185733] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:37:59,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:37:59,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:37:59,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657096190] [2021-10-21 19:37:59,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:37:59,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:37:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:37:59,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:37:59,616 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 178 [2021-10-21 19:37:59,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 233 transitions, 986 flow. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:37:59,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:37:59,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 178 [2021-10-21 19:37:59,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:00,178 INFO L129 PetriNetUnfolder]: 551/2448 cut-off events. [2021-10-21 19:38:00,179 INFO L130 PetriNetUnfolder]: For 1914/1977 co-relation queries the response was YES. [2021-10-21 19:38:00,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5143 conditions, 2448 events. 551/2448 cut-off events. For 1914/1977 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 22689 event pairs, 35 based on Foata normal form. 19/2327 useless extension candidates. Maximal degree in co-relation 5065. Up to 430 conditions per place. [2021-10-21 19:38:00,236 INFO L132 encePairwiseOnDemand]: 176/178 looper letters, 11 selfloop transitions, 1 changer transitions 0/235 dead transitions. [2021-10-21 19:38:00,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 235 transitions, 1024 flow [2021-10-21 19:38:00,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:38:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:38:00,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2021-10-21 19:38:00,239 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.951310861423221 [2021-10-21 19:38:00,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2021-10-21 19:38:00,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2021-10-21 19:38:00,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:00,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2021-10-21 19:38:00,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:00,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:00,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:00,247 INFO L186 Difference]: Start difference. First operand has 204 places, 233 transitions, 986 flow. Second operand 3 states and 508 transitions. [2021-10-21 19:38:00,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 235 transitions, 1024 flow [2021-10-21 19:38:00,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 235 transitions, 1023 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 19:38:00,273 INFO L242 Difference]: Finished difference. Result has 206 places, 233 transitions, 990 flow [2021-10-21 19:38:00,274 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=985, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=990, PETRI_PLACES=206, PETRI_TRANSITIONS=233} [2021-10-21 19:38:00,274 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 50 predicate places. [2021-10-21 19:38:00,274 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 233 transitions, 990 flow [2021-10-21 19:38:00,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:00,275 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:00,276 INFO L254 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] [2021-10-21 19:38:00,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-21 19:38:00,276 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:00,277 INFO L82 PathProgramCache]: Analyzing trace with hash -368555099, now seen corresponding path program 1 times [2021-10-21 19:38:00,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:00,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728954033] [2021-10-21 19:38:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:00,278 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:00,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:00,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728954033] [2021-10-21 19:38:00,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728954033] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:00,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:00,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:38:00,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363050636] [2021-10-21 19:38:00,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:38:00,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:00,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:38:00,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:38:00,370 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 178 [2021-10-21 19:38:00,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 233 transitions, 990 flow. Second operand has 5 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:00,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:00,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 178 [2021-10-21 19:38:00,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:01,516 INFO L129 PetriNetUnfolder]: 1108/4295 cut-off events. [2021-10-21 19:38:01,516 INFO L130 PetriNetUnfolder]: For 4106/4227 co-relation queries the response was YES. [2021-10-21 19:38:01,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9900 conditions, 4295 events. 1108/4295 cut-off events. For 4106/4227 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 44440 event pairs, 82 based on Foata normal form. 18/4037 useless extension candidates. Maximal degree in co-relation 9718. Up to 789 conditions per place. [2021-10-21 19:38:01,623 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 41 selfloop transitions, 38 changer transitions 0/273 dead transitions. [2021-10-21 19:38:01,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 273 transitions, 1360 flow [2021-10-21 19:38:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:38:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-21 19:38:01,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1143 transitions. [2021-10-21 19:38:01,629 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9173354735152488 [2021-10-21 19:38:01,630 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1143 transitions. [2021-10-21 19:38:01,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1143 transitions. [2021-10-21 19:38:01,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:01,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1143 transitions. [2021-10-21 19:38:01,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 163.28571428571428) internal successors, (1143), 7 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:01,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:01,643 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 178.0) internal successors, (1424), 8 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:01,643 INFO L186 Difference]: Start difference. First operand has 206 places, 233 transitions, 990 flow. Second operand 7 states and 1143 transitions. [2021-10-21 19:38:01,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 273 transitions, 1360 flow [2021-10-21 19:38:01,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 273 transitions, 1359 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-21 19:38:01,688 INFO L242 Difference]: Finished difference. Result has 216 places, 252 transitions, 1284 flow [2021-10-21 19:38:01,689 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1284, PETRI_PLACES=216, PETRI_TRANSITIONS=252} [2021-10-21 19:38:01,689 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 60 predicate places. [2021-10-21 19:38:01,689 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 252 transitions, 1284 flow [2021-10-21 19:38:01,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:01,690 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:01,691 INFO L254 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] [2021-10-21 19:38:01,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-21 19:38:01,691 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:01,692 INFO L82 PathProgramCache]: Analyzing trace with hash -369567993, now seen corresponding path program 1 times [2021-10-21 19:38:01,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:01,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239792770] [2021-10-21 19:38:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:01,693 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:01,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:01,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239792770] [2021-10-21 19:38:01,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239792770] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:01,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:01,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:38:01,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970609742] [2021-10-21 19:38:01,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:38:01,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:01,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:38:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:38:01,743 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 178 [2021-10-21 19:38:01,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 252 transitions, 1284 flow. Second operand has 3 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) [2021-10-21 19:38:01,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:01,745 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 178 [2021-10-21 19:38:01,745 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:02,598 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([841] L772-1-->L772-2: Formula: (= v_~ctr1~0_20 (+ |v_qrcu_updaterThread1of1ForFork0_#t~post20_3| 1)) InVars {qrcu_updaterThread1of1ForFork0_#t~post20=|v_qrcu_updaterThread1of1ForFork0_#t~post20_3|} OutVars{~ctr1~0=v_~ctr1~0_20, qrcu_updaterThread1of1ForFork0_#t~post20=|v_qrcu_updaterThread1of1ForFork0_#t~post20_3|} AuxVars[] AssignedVars[~ctr1~0][209], [Black: 243#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 249#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0) (<= 2 qrcu_updaterThread1of1ForFork0_~sum~0)), Black: 239#true, Black: 194#(and (= |qrcu_updaterThread1of1ForFork0_#t~mem23| 0) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset|) 0)), Black: 192#(and (= |qrcu_updaterThread1of1ForFork0_#t~mem23| 0) (= ~readerprogress2~0 0) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset|) 0)), 262#(= ~readerprogress1~0 2), Black: 186#(= ~readerprogress2~0 0), 50#L772-2true, 109#L739-3true, 187#(= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset|) 0), 54#L758-3true, Black: 278#(and (= |qrcu_updaterThread1of1ForFork0_#t~post18| 0) (<= 1 ~ctr2~0)), Black: 274#(<= 1 ~ctr2~0), Black: 211#(and (= |qrcu_updaterThread1of1ForFork0_#t~mem22| 0) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset|) 0)), Black: 201#(= ~readerprogress1~0 0), Black: 273#(= |qrcu_updaterThread1of1ForFork0_#t~post18| 0), Black: 272#(= ~ctr2~0 0), Black: 207#(and (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base|)) (= ~readerprogress1~0 0) (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base|) 1)), 245#(<= 2 qrcu_updaterThread1of1ForFork0_~sum~0), Black: 209#(and (not (= |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base|)) (= (select (select |#memory_int| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base|) |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset|) 0) (= ~readerprogress1~0 0) (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base|) 1)), Black: 202#(and (= ~readerprogress1~0 0) (= (select |#valid| |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base|) 1)), 222#true, 285#true, 270#true, 99#L786-4true, Black: 225#(and (= ~ctr2~0 0) (= ~ctr1~0 1)), qrcu_updaterThread1of1ForFork0InUse, Black: 227#(and (= ~ctr2~0 0) (<= 2 qrcu_updaterThread1of1ForFork0_~sum~0)), Black: 231#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0) (<= 2 qrcu_updaterThread1of1ForFork0_~sum~0)), Black: 224#(= ~ctr1~0 1), 267#(= ~readerprogress2~0 2), Black: 229#(and (= ~ctr2~0 0) (<= 2 qrcu_updaterThread1of1ForFork0_~sum~0) (= ~ctr1~0 1)), Black: 226#(and (<= 2 ~ctr1~0) (= ~ctr2~0 0)), Black: 173#true, 199#true, Black: 181#(= ~readerprogress1~0 0), 175#(< 1 qrcu_updaterThread1of1ForFork0_~sum~0), Black: 251#(and (= qrcu_updaterThread1of1ForFork0_~sum~0 0) (<= 2 ~ctr1~0) (= ~ctr2~0 0))]) [2021-10-21 19:38:02,598 INFO L384 tUnfolder$Statistics]: this new event has 88 ancestors and is cut-off event [2021-10-21 19:38:02,599 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2021-10-21 19:38:02,599 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2021-10-21 19:38:02,599 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2021-10-21 19:38:03,023 INFO L129 PetriNetUnfolder]: 1305/5537 cut-off events. [2021-10-21 19:38:03,023 INFO L130 PetriNetUnfolder]: For 6940/7149 co-relation queries the response was YES. [2021-10-21 19:38:03,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13030 conditions, 5537 events. 1305/5537 cut-off events. For 6940/7149 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 60361 event pairs, 130 based on Foata normal form. 28/5226 useless extension candidates. Maximal degree in co-relation 12945. Up to 832 conditions per place. [2021-10-21 19:38:03,135 INFO L132 encePairwiseOnDemand]: 176/178 looper letters, 11 selfloop transitions, 1 changer transitions 0/255 dead transitions. [2021-10-21 19:38:03,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 255 transitions, 1314 flow [2021-10-21 19:38:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:38:03,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:38:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2021-10-21 19:38:03,138 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9400749063670412 [2021-10-21 19:38:03,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2021-10-21 19:38:03,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2021-10-21 19:38:03,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:03,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2021-10-21 19:38:03,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:03,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:03,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:03,145 INFO L186 Difference]: Start difference. First operand has 216 places, 252 transitions, 1284 flow. Second operand 3 states and 502 transitions. [2021-10-21 19:38:03,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 255 transitions, 1314 flow [2021-10-21 19:38:03,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 255 transitions, 1286 flow, removed 14 selfloop flow, removed 0 redundant places. [2021-10-21 19:38:03,330 INFO L242 Difference]: Finished difference. Result has 219 places, 252 transitions, 1261 flow [2021-10-21 19:38:03,331 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1256, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1261, PETRI_PLACES=219, PETRI_TRANSITIONS=252} [2021-10-21 19:38:03,331 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 63 predicate places. [2021-10-21 19:38:03,332 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 252 transitions, 1261 flow [2021-10-21 19:38:03,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2021-10-21 19:38:03,333 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:03,333 INFO L254 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] [2021-10-21 19:38:03,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-21 19:38:03,334 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:03,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:03,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1025574009, now seen corresponding path program 1 times [2021-10-21 19:38:03,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:03,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407818623] [2021-10-21 19:38:03,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:03,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:03,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:03,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407818623] [2021-10-21 19:38:03,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407818623] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:03,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:03,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-21 19:38:03,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758983986] [2021-10-21 19:38:03,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:38:03,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:03,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:38:03,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:38:03,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 178 [2021-10-21 19:38:03,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 252 transitions, 1261 flow. Second operand has 3 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) [2021-10-21 19:38:03,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:03,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 178 [2021-10-21 19:38:03,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:04,319 INFO L129 PetriNetUnfolder]: 749/3450 cut-off events. [2021-10-21 19:38:04,319 INFO L130 PetriNetUnfolder]: For 4184/4321 co-relation queries the response was YES. [2021-10-21 19:38:04,356 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8344 conditions, 3450 events. 749/3450 cut-off events. For 4184/4321 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 35023 event pairs, 69 based on Foata normal form. 19/3333 useless extension candidates. Maximal degree in co-relation 8257. Up to 495 conditions per place. [2021-10-21 19:38:04,372 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 6 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2021-10-21 19:38:04,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 232 transitions, 1155 flow [2021-10-21 19:38:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:38:04,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-21 19:38:04,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2021-10-21 19:38:04,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9325842696629213 [2021-10-21 19:38:04,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2021-10-21 19:38:04,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2021-10-21 19:38:04,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:04,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2021-10-21 19:38:04,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:04,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:04,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:04,382 INFO L186 Difference]: Start difference. First operand has 219 places, 252 transitions, 1261 flow. Second operand 3 states and 498 transitions. [2021-10-21 19:38:04,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 232 transitions, 1155 flow [2021-10-21 19:38:04,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 232 transitions, 1149 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-21 19:38:04,428 INFO L242 Difference]: Finished difference. Result has 209 places, 230 transitions, 1133 flow [2021-10-21 19:38:04,429 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1133, PETRI_PLACES=209, PETRI_TRANSITIONS=230} [2021-10-21 19:38:04,429 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 53 predicate places. [2021-10-21 19:38:04,430 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 230 transitions, 1133 flow [2021-10-21 19:38:04,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2021-10-21 19:38:04,430 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:04,431 INFO L254 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] [2021-10-21 19:38:04,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-21 19:38:04,431 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:04,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:04,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1834310867, now seen corresponding path program 1 times [2021-10-21 19:38:04,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:04,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258632716] [2021-10-21 19:38:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:04,433 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:04,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:04,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:04,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258632716] [2021-10-21 19:38:04,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258632716] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:04,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:04,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:38:04,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415065919] [2021-10-21 19:38:04,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:38:04,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:04,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:38:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:38:04,773 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-21 19:38:04,777 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 230 transitions, 1133 flow. Second operand has 10 states, 10 states have (on average 128.8) internal successors, (1288), 10 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:04,777 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:04,777 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-21 19:38:04,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:06,845 INFO L129 PetriNetUnfolder]: 2393/6663 cut-off events. [2021-10-21 19:38:06,846 INFO L130 PetriNetUnfolder]: For 13361/13533 co-relation queries the response was YES. [2021-10-21 19:38:06,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19418 conditions, 6663 events. 2393/6663 cut-off events. For 13361/13533 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 63785 event pairs, 175 based on Foata normal form. 122/6536 useless extension candidates. Maximal degree in co-relation 19073. Up to 1561 conditions per place. [2021-10-21 19:38:06,904 INFO L132 encePairwiseOnDemand]: 161/178 looper letters, 110 selfloop transitions, 49 changer transitions 152/427 dead transitions. [2021-10-21 19:38:06,905 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 427 transitions, 3037 flow [2021-10-21 19:38:06,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:38:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-21 19:38:06,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2115 transitions. [2021-10-21 19:38:06,914 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7921348314606742 [2021-10-21 19:38:06,914 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2115 transitions. [2021-10-21 19:38:06,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2115 transitions. [2021-10-21 19:38:06,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:06,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2115 transitions. [2021-10-21 19:38:06,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 141.0) internal successors, (2115), 15 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:06,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 178.0) internal successors, (2848), 16 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:06,936 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 178.0) internal successors, (2848), 16 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:06,936 INFO L186 Difference]: Start difference. First operand has 209 places, 230 transitions, 1133 flow. Second operand 15 states and 2115 transitions. [2021-10-21 19:38:06,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 427 transitions, 3037 flow [2021-10-21 19:38:07,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 427 transitions, 3031 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-21 19:38:07,045 INFO L242 Difference]: Finished difference. Result has 228 places, 212 transitions, 1272 flow [2021-10-21 19:38:07,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1272, PETRI_PLACES=228, PETRI_TRANSITIONS=212} [2021-10-21 19:38:07,046 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 72 predicate places. [2021-10-21 19:38:07,046 INFO L470 AbstractCegarLoop]: Abstraction has has 228 places, 212 transitions, 1272 flow [2021-10-21 19:38:07,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.8) internal successors, (1288), 10 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:07,047 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:07,048 INFO L254 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] [2021-10-21 19:38:07,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-21 19:38:07,048 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:07,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:07,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1069995329, now seen corresponding path program 1 times [2021-10-21 19:38:07,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:07,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393052179] [2021-10-21 19:38:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:07,050 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:07,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:07,291 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393052179] [2021-10-21 19:38:07,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393052179] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:07,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:07,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:38:07,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355690563] [2021-10-21 19:38:07,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:38:07,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:07,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:38:07,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:38:07,297 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-21 19:38:07,300 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 212 transitions, 1272 flow. Second operand has 11 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:07,300 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:07,300 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-21 19:38:07,300 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:09,226 INFO L129 PetriNetUnfolder]: 1796/5142 cut-off events. [2021-10-21 19:38:09,227 INFO L130 PetriNetUnfolder]: For 18935/19121 co-relation queries the response was YES. [2021-10-21 19:38:09,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17949 conditions, 5142 events. 1796/5142 cut-off events. For 18935/19121 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 47936 event pairs, 137 based on Foata normal form. 125/5065 useless extension candidates. Maximal degree in co-relation 17834. Up to 957 conditions per place. [2021-10-21 19:38:09,277 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 127 selfloop transitions, 71 changer transitions 47/361 dead transitions. [2021-10-21 19:38:09,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 361 transitions, 2992 flow [2021-10-21 19:38:09,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 19:38:09,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-21 19:38:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2334 transitions. [2021-10-21 19:38:09,287 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7713152676801057 [2021-10-21 19:38:09,287 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2334 transitions. [2021-10-21 19:38:09,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2334 transitions. [2021-10-21 19:38:09,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:09,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2334 transitions. [2021-10-21 19:38:09,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 137.2941176470588) internal successors, (2334), 17 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:09,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 178.0) internal successors, (3204), 18 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:09,309 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 178.0) internal successors, (3204), 18 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:09,309 INFO L186 Difference]: Start difference. First operand has 228 places, 212 transitions, 1272 flow. Second operand 17 states and 2334 transitions. [2021-10-21 19:38:09,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 361 transitions, 2992 flow [2021-10-21 19:38:09,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 361 transitions, 2870 flow, removed 52 selfloop flow, removed 10 redundant places. [2021-10-21 19:38:09,443 INFO L242 Difference]: Finished difference. Result has 227 places, 249 transitions, 1917 flow [2021-10-21 19:38:09,444 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1917, PETRI_PLACES=227, PETRI_TRANSITIONS=249} [2021-10-21 19:38:09,444 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 71 predicate places. [2021-10-21 19:38:09,444 INFO L470 AbstractCegarLoop]: Abstraction has has 227 places, 249 transitions, 1917 flow [2021-10-21 19:38:09,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:09,446 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:09,446 INFO L254 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] [2021-10-21 19:38:09,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-21 19:38:09,447 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:09,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:09,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1416201567, now seen corresponding path program 2 times [2021-10-21 19:38:09,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:09,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596762247] [2021-10-21 19:38:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:09,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:09,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:09,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:09,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596762247] [2021-10-21 19:38:09,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596762247] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:09,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:09,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:38:09,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088677465] [2021-10-21 19:38:09,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:38:09,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:09,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:38:09,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:38:09,639 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-21 19:38:09,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 249 transitions, 1917 flow. Second operand has 10 states, 10 states have (on average 128.8) internal successors, (1288), 10 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:09,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:09,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-21 19:38:09,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:11,265 INFO L129 PetriNetUnfolder]: 1670/5029 cut-off events. [2021-10-21 19:38:11,265 INFO L130 PetriNetUnfolder]: For 27643/27900 co-relation queries the response was YES. [2021-10-21 19:38:11,297 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18598 conditions, 5029 events. 1670/5029 cut-off events. For 27643/27900 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 47637 event pairs, 146 based on Foata normal form. 225/5049 useless extension candidates. Maximal degree in co-relation 18293. Up to 966 conditions per place. [2021-10-21 19:38:11,309 INFO L132 encePairwiseOnDemand]: 161/178 looper letters, 141 selfloop transitions, 73 changer transitions 33/363 dead transitions. [2021-10-21 19:38:11,309 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 363 transitions, 3330 flow [2021-10-21 19:38:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:38:11,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 19:38:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1686 transitions. [2021-10-21 19:38:11,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7893258426966292 [2021-10-21 19:38:11,316 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1686 transitions. [2021-10-21 19:38:11,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1686 transitions. [2021-10-21 19:38:11,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:11,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1686 transitions. [2021-10-21 19:38:11,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.5) internal successors, (1686), 12 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:11,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:11,331 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:11,331 INFO L186 Difference]: Start difference. First operand has 227 places, 249 transitions, 1917 flow. Second operand 12 states and 1686 transitions. [2021-10-21 19:38:11,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 363 transitions, 3330 flow [2021-10-21 19:38:11,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 363 transitions, 3278 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-10-21 19:38:11,541 INFO L242 Difference]: Finished difference. Result has 238 places, 258 transitions, 2231 flow [2021-10-21 19:38:11,542 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2231, PETRI_PLACES=238, PETRI_TRANSITIONS=258} [2021-10-21 19:38:11,543 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 82 predicate places. [2021-10-21 19:38:11,543 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 258 transitions, 2231 flow [2021-10-21 19:38:11,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.8) internal successors, (1288), 10 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:11,544 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:11,544 INFO L254 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] [2021-10-21 19:38:11,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-21 19:38:11,545 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:11,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:11,546 INFO L82 PathProgramCache]: Analyzing trace with hash -237587885, now seen corresponding path program 2 times [2021-10-21 19:38:11,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:11,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211875080] [2021-10-21 19:38:11,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:11,547 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:11,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:11,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211875080] [2021-10-21 19:38:11,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211875080] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:11,739 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:11,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:38:11,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491769865] [2021-10-21 19:38:11,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:38:11,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:38:11,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:38:11,745 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-21 19:38:11,747 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 258 transitions, 2231 flow. Second operand has 11 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:11,747 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:11,747 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-21 19:38:11,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:13,555 INFO L129 PetriNetUnfolder]: 1621/5001 cut-off events. [2021-10-21 19:38:13,556 INFO L130 PetriNetUnfolder]: For 33137/33403 co-relation queries the response was YES. [2021-10-21 19:38:13,594 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19483 conditions, 5001 events. 1621/5001 cut-off events. For 33137/33403 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 47880 event pairs, 90 based on Foata normal form. 211/5015 useless extension candidates. Maximal degree in co-relation 19193. Up to 845 conditions per place. [2021-10-21 19:38:13,607 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 137 selfloop transitions, 79 changer transitions 47/379 dead transitions. [2021-10-21 19:38:13,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 379 transitions, 3784 flow [2021-10-21 19:38:13,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:38:13,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 19:38:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2213 transitions. [2021-10-21 19:38:13,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7770365168539326 [2021-10-21 19:38:13,613 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2213 transitions. [2021-10-21 19:38:13,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2213 transitions. [2021-10-21 19:38:13,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:13,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2213 transitions. [2021-10-21 19:38:13,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 138.3125) internal successors, (2213), 16 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:13,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 178.0) internal successors, (3026), 17 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:13,629 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 178.0) internal successors, (3026), 17 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:13,629 INFO L186 Difference]: Start difference. First operand has 238 places, 258 transitions, 2231 flow. Second operand 16 states and 2213 transitions. [2021-10-21 19:38:13,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 379 transitions, 3784 flow [2021-10-21 19:38:13,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 379 transitions, 3676 flow, removed 32 selfloop flow, removed 5 redundant places. [2021-10-21 19:38:13,891 INFO L242 Difference]: Finished difference. Result has 253 places, 262 transitions, 2435 flow [2021-10-21 19:38:13,892 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2435, PETRI_PLACES=253, PETRI_TRANSITIONS=262} [2021-10-21 19:38:13,892 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 97 predicate places. [2021-10-21 19:38:13,893 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 262 transitions, 2435 flow [2021-10-21 19:38:13,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:13,894 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:13,894 INFO L254 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] [2021-10-21 19:38:13,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-21 19:38:13,894 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:13,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:13,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1173561301, now seen corresponding path program 3 times [2021-10-21 19:38:13,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:13,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561725523] [2021-10-21 19:38:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:13,896 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:14,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:14,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561725523] [2021-10-21 19:38:14,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561725523] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:14,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:14,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:38:14,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360481487] [2021-10-21 19:38:14,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:38:14,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:14,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:38:14,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:38:14,107 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-21 19:38:14,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 262 transitions, 2435 flow. Second operand has 11 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:14,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:14,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-21 19:38:14,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:16,135 INFO L129 PetriNetUnfolder]: 1572/4914 cut-off events. [2021-10-21 19:38:16,135 INFO L130 PetriNetUnfolder]: For 39567/39837 co-relation queries the response was YES. [2021-10-21 19:38:16,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19610 conditions, 4914 events. 1572/4914 cut-off events. For 39567/39837 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 47329 event pairs, 94 based on Foata normal form. 217/4939 useless extension candidates. Maximal degree in co-relation 19369. Up to 748 conditions per place. [2021-10-21 19:38:16,207 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 123 selfloop transitions, 87 changer transitions 51/377 dead transitions. [2021-10-21 19:38:16,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 377 transitions, 4010 flow [2021-10-21 19:38:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:38:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 19:38:16,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2464 transitions. [2021-10-21 19:38:16,215 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7690387016229713 [2021-10-21 19:38:16,216 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2464 transitions. [2021-10-21 19:38:16,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2464 transitions. [2021-10-21 19:38:16,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:16,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2464 transitions. [2021-10-21 19:38:16,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 136.88888888888889) internal successors, (2464), 18 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:16,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:16,420 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:16,420 INFO L186 Difference]: Start difference. First operand has 253 places, 262 transitions, 2435 flow. Second operand 18 states and 2464 transitions. [2021-10-21 19:38:16,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 377 transitions, 4010 flow [2021-10-21 19:38:16,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 377 transitions, 3892 flow, removed 25 selfloop flow, removed 7 redundant places. [2021-10-21 19:38:16,695 INFO L242 Difference]: Finished difference. Result has 269 places, 269 transitions, 2723 flow [2021-10-21 19:38:16,696 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2360, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2723, PETRI_PLACES=269, PETRI_TRANSITIONS=269} [2021-10-21 19:38:16,697 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 113 predicate places. [2021-10-21 19:38:16,697 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 269 transitions, 2723 flow [2021-10-21 19:38:16,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:16,698 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:16,698 INFO L254 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] [2021-10-21 19:38:16,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-21 19:38:16,699 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:16,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:16,699 INFO L82 PathProgramCache]: Analyzing trace with hash 940718135, now seen corresponding path program 1 times [2021-10-21 19:38:16,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:16,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829480332] [2021-10-21 19:38:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:16,700 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:16,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:16,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:16,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829480332] [2021-10-21 19:38:16,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829480332] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:16,885 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:16,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:38:16,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988269981] [2021-10-21 19:38:16,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:38:16,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:38:16,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:38:16,890 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-21 19:38:16,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 269 transitions, 2723 flow. Second operand has 10 states, 10 states have (on average 128.8) internal successors, (1288), 10 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:16,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:16,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-21 19:38:16,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:18,675 INFO L129 PetriNetUnfolder]: 1529/4808 cut-off events. [2021-10-21 19:38:18,675 INFO L130 PetriNetUnfolder]: For 47273/47705 co-relation queries the response was YES. [2021-10-21 19:38:18,720 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20621 conditions, 4808 events. 1529/4808 cut-off events. For 47273/47705 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 46292 event pairs, 47 based on Foata normal form. 311/4965 useless extension candidates. Maximal degree in co-relation 20392. Up to 873 conditions per place. [2021-10-21 19:38:18,731 INFO L132 encePairwiseOnDemand]: 161/178 looper letters, 160 selfloop transitions, 69 changer transitions 48/393 dead transitions. [2021-10-21 19:38:18,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 393 transitions, 4652 flow [2021-10-21 19:38:18,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:38:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 19:38:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1686 transitions. [2021-10-21 19:38:18,735 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7893258426966292 [2021-10-21 19:38:18,736 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1686 transitions. [2021-10-21 19:38:18,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1686 transitions. [2021-10-21 19:38:18,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:18,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1686 transitions. [2021-10-21 19:38:18,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.5) internal successors, (1686), 12 states have internal predecessors, (1686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:18,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:18,746 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:18,747 INFO L186 Difference]: Start difference. First operand has 269 places, 269 transitions, 2723 flow. Second operand 12 states and 1686 transitions. [2021-10-21 19:38:18,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 393 transitions, 4652 flow [2021-10-21 19:38:18,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 393 transitions, 4478 flow, removed 34 selfloop flow, removed 9 redundant places. [2021-10-21 19:38:19,006 INFO L242 Difference]: Finished difference. Result has 276 places, 286 transitions, 3098 flow [2021-10-21 19:38:19,007 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3098, PETRI_PLACES=276, PETRI_TRANSITIONS=286} [2021-10-21 19:38:19,008 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 120 predicate places. [2021-10-21 19:38:19,008 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 286 transitions, 3098 flow [2021-10-21 19:38:19,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.8) internal successors, (1288), 10 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:19,009 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:19,009 INFO L254 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] [2021-10-21 19:38:19,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-21 19:38:19,010 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:19,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:19,011 INFO L82 PathProgramCache]: Analyzing trace with hash -2077575969, now seen corresponding path program 1 times [2021-10-21 19:38:19,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:19,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066300164] [2021-10-21 19:38:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:19,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:19,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:19,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:19,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066300164] [2021-10-21 19:38:19,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066300164] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:19,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:19,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:38:19,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063766008] [2021-10-21 19:38:19,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:38:19,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:19,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:38:19,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:38:19,214 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-21 19:38:19,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 286 transitions, 3098 flow. Second operand has 11 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:19,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:19,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-21 19:38:19,217 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:20,865 INFO L129 PetriNetUnfolder]: 1429/4529 cut-off events. [2021-10-21 19:38:20,865 INFO L130 PetriNetUnfolder]: For 52379/52796 co-relation queries the response was YES. [2021-10-21 19:38:20,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20898 conditions, 4529 events. 1429/4529 cut-off events. For 52379/52796 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 43203 event pairs, 62 based on Foata normal form. 289/4688 useless extension candidates. Maximal degree in co-relation 20668. Up to 686 conditions per place. [2021-10-21 19:38:20,922 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 140 selfloop transitions, 86 changer transitions 53/395 dead transitions. [2021-10-21 19:38:20,922 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 395 transitions, 4785 flow [2021-10-21 19:38:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:38:20,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-21 19:38:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2207 transitions. [2021-10-21 19:38:20,927 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7749297752808989 [2021-10-21 19:38:20,927 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2207 transitions. [2021-10-21 19:38:20,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2207 transitions. [2021-10-21 19:38:20,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:20,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2207 transitions. [2021-10-21 19:38:20,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.9375) internal successors, (2207), 16 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:20,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 178.0) internal successors, (3026), 17 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:20,940 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 178.0) internal successors, (3026), 17 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:20,940 INFO L186 Difference]: Start difference. First operand has 276 places, 286 transitions, 3098 flow. Second operand 16 states and 2207 transitions. [2021-10-21 19:38:20,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 395 transitions, 4785 flow [2021-10-21 19:38:21,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 395 transitions, 4619 flow, removed 37 selfloop flow, removed 5 redundant places. [2021-10-21 19:38:21,196 INFO L242 Difference]: Finished difference. Result has 291 places, 288 transitions, 3201 flow [2021-10-21 19:38:21,197 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3201, PETRI_PLACES=291, PETRI_TRANSITIONS=288} [2021-10-21 19:38:21,198 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 135 predicate places. [2021-10-21 19:38:21,198 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 288 transitions, 3201 flow [2021-10-21 19:38:21,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:21,199 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:21,199 INFO L254 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] [2021-10-21 19:38:21,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-21 19:38:21,200 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:21,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:21,200 INFO L82 PathProgramCache]: Analyzing trace with hash 2103163063, now seen corresponding path program 2 times [2021-10-21 19:38:21,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:21,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126811553] [2021-10-21 19:38:21,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:21,201 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:21,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:21,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126811553] [2021-10-21 19:38:21,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126811553] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:21,406 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:21,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-21 19:38:21,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593243099] [2021-10-21 19:38:21,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:38:21,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:21,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:38:21,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:38:21,410 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-21 19:38:21,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 288 transitions, 3201 flow. Second operand has 10 states, 10 states have (on average 128.8) internal successors, (1288), 10 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:21,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:21,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-21 19:38:21,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:22,979 INFO L129 PetriNetUnfolder]: 1401/4537 cut-off events. [2021-10-21 19:38:22,979 INFO L130 PetriNetUnfolder]: For 60459/60910 co-relation queries the response was YES. [2021-10-21 19:38:23,036 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20519 conditions, 4537 events. 1401/4537 cut-off events. For 60459/60910 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 43574 event pairs, 55 based on Foata normal form. 303/4683 useless extension candidates. Maximal degree in co-relation 20274. Up to 964 conditions per place. [2021-10-21 19:38:23,048 INFO L132 encePairwiseOnDemand]: 162/178 looper letters, 145 selfloop transitions, 78 changer transitions 43/382 dead transitions. [2021-10-21 19:38:23,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 382 transitions, 4793 flow [2021-10-21 19:38:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:38:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 19:38:23,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1677 transitions. [2021-10-21 19:38:23,053 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7851123595505618 [2021-10-21 19:38:23,054 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1677 transitions. [2021-10-21 19:38:23,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1677 transitions. [2021-10-21 19:38:23,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:23,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1677 transitions. [2021-10-21 19:38:23,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 139.75) internal successors, (1677), 12 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:23,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:23,066 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:23,066 INFO L186 Difference]: Start difference. First operand has 291 places, 288 transitions, 3201 flow. Second operand 12 states and 1677 transitions. [2021-10-21 19:38:23,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 382 transitions, 4793 flow [2021-10-21 19:38:23,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 382 transitions, 4583 flow, removed 23 selfloop flow, removed 9 redundant places. [2021-10-21 19:38:23,389 INFO L242 Difference]: Finished difference. Result has 295 places, 290 transitions, 3325 flow [2021-10-21 19:38:23,390 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3325, PETRI_PLACES=295, PETRI_TRANSITIONS=290} [2021-10-21 19:38:23,390 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 139 predicate places. [2021-10-21 19:38:23,391 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 290 transitions, 3325 flow [2021-10-21 19:38:23,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.8) internal successors, (1288), 10 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:23,392 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:23,392 INFO L254 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] [2021-10-21 19:38:23,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-21 19:38:23,392 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:23,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:23,393 INFO L82 PathProgramCache]: Analyzing trace with hash -2041973085, now seen corresponding path program 2 times [2021-10-21 19:38:23,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:23,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429957057] [2021-10-21 19:38:23,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:23,394 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:23,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:23,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429957057] [2021-10-21 19:38:23,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429957057] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:23,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:23,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-21 19:38:23,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344453076] [2021-10-21 19:38:23,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:38:23,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:38:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:38:23,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-21 19:38:23,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 290 transitions, 3325 flow. Second operand has 11 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:23,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:23,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-21 19:38:23,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:24,962 INFO L129 PetriNetUnfolder]: 1057/3456 cut-off events. [2021-10-21 19:38:24,963 INFO L130 PetriNetUnfolder]: For 46594/46899 co-relation queries the response was YES. [2021-10-21 19:38:25,007 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16001 conditions, 3456 events. 1057/3456 cut-off events. For 46594/46899 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 31480 event pairs, 35 based on Foata normal form. 223/3585 useless extension candidates. Maximal degree in co-relation 15773. Up to 580 conditions per place. [2021-10-21 19:38:25,016 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 126 selfloop transitions, 97 changer transitions 27/361 dead transitions. [2021-10-21 19:38:25,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 361 transitions, 4512 flow [2021-10-21 19:38:25,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:38:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-21 19:38:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2426 transitions. [2021-10-21 19:38:25,022 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7571785268414482 [2021-10-21 19:38:25,022 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2426 transitions. [2021-10-21 19:38:25,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2426 transitions. [2021-10-21 19:38:25,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:25,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2426 transitions. [2021-10-21 19:38:25,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 134.77777777777777) internal successors, (2426), 18 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:25,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:25,037 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 178.0) internal successors, (3382), 19 states have internal predecessors, (3382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:25,037 INFO L186 Difference]: Start difference. First operand has 295 places, 290 transitions, 3325 flow. Second operand 18 states and 2426 transitions. [2021-10-21 19:38:25,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 361 transitions, 4512 flow [2021-10-21 19:38:25,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 361 transitions, 4372 flow, removed 29 selfloop flow, removed 7 redundant places. [2021-10-21 19:38:25,280 INFO L242 Difference]: Finished difference. Result has 308 places, 281 transitions, 3394 flow [2021-10-21 19:38:25,281 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=3207, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3394, PETRI_PLACES=308, PETRI_TRANSITIONS=281} [2021-10-21 19:38:25,281 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 152 predicate places. [2021-10-21 19:38:25,281 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 281 transitions, 3394 flow [2021-10-21 19:38:25,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 128.63636363636363) internal successors, (1415), 11 states have internal predecessors, (1415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:25,282 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:25,282 INFO L254 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] [2021-10-21 19:38:25,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-21 19:38:25,282 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:25,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:25,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1276402094, now seen corresponding path program 1 times [2021-10-21 19:38:25,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:25,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453376949] [2021-10-21 19:38:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:25,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:25,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:25,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453376949] [2021-10-21 19:38:25,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453376949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:25,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:25,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:38:25,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018691956] [2021-10-21 19:38:25,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:38:25,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:38:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:38:25,397 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-21 19:38:25,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 281 transitions, 3394 flow. Second operand has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:25,399 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:25,399 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-21 19:38:25,399 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:26,284 INFO L129 PetriNetUnfolder]: 653/2634 cut-off events. [2021-10-21 19:38:26,284 INFO L130 PetriNetUnfolder]: For 30307/30422 co-relation queries the response was YES. [2021-10-21 19:38:26,323 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11209 conditions, 2634 events. 653/2634 cut-off events. For 30307/30422 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 22972 event pairs, 32 based on Foata normal form. 55/2617 useless extension candidates. Maximal degree in co-relation 11018. Up to 362 conditions per place. [2021-10-21 19:38:26,329 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 83 selfloop transitions, 37 changer transitions 69/340 dead transitions. [2021-10-21 19:38:26,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 340 transitions, 4270 flow [2021-10-21 19:38:26,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:38:26,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-21 19:38:26,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1665 transitions. [2021-10-21 19:38:26,333 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8503575076608785 [2021-10-21 19:38:26,334 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1665 transitions. [2021-10-21 19:38:26,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1665 transitions. [2021-10-21 19:38:26,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:26,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1665 transitions. [2021-10-21 19:38:26,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.36363636363637) internal successors, (1665), 11 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:26,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 178.0) internal successors, (2136), 12 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:26,344 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 178.0) internal successors, (2136), 12 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:26,344 INFO L186 Difference]: Start difference. First operand has 308 places, 281 transitions, 3394 flow. Second operand 11 states and 1665 transitions. [2021-10-21 19:38:26,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 340 transitions, 4270 flow [2021-10-21 19:38:26,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 340 transitions, 3898 flow, removed 16 selfloop flow, removed 20 redundant places. [2021-10-21 19:38:26,525 INFO L242 Difference]: Finished difference. Result has 295 places, 237 transitions, 2338 flow [2021-10-21 19:38:26,525 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2338, PETRI_PLACES=295, PETRI_TRANSITIONS=237} [2021-10-21 19:38:26,525 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 139 predicate places. [2021-10-21 19:38:26,525 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 237 transitions, 2338 flow [2021-10-21 19:38:26,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:26,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:26,526 INFO L254 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] [2021-10-21 19:38:26,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-21 19:38:26,526 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:26,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:26,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2080659718, now seen corresponding path program 2 times [2021-10-21 19:38:26,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:26,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369250563] [2021-10-21 19:38:26,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:26,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:26,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:26,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369250563] [2021-10-21 19:38:26,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369250563] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:26,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:26,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:38:26,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168065131] [2021-10-21 19:38:26,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:38:26,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:26,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:38:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:38:26,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-21 19:38:26,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 237 transitions, 2338 flow. Second operand has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:26,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:26,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-21 19:38:26,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:27,487 INFO L129 PetriNetUnfolder]: 563/2236 cut-off events. [2021-10-21 19:38:27,487 INFO L130 PetriNetUnfolder]: For 19999/20093 co-relation queries the response was YES. [2021-10-21 19:38:27,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8878 conditions, 2236 events. 563/2236 cut-off events. For 19999/20093 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 18301 event pairs, 44 based on Foata normal form. 44/2193 useless extension candidates. Maximal degree in co-relation 8817. Up to 314 conditions per place. [2021-10-21 19:38:27,534 INFO L132 encePairwiseOnDemand]: 166/178 looper letters, 85 selfloop transitions, 45 changer transitions 25/306 dead transitions. [2021-10-21 19:38:27,534 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 306 transitions, 3365 flow [2021-10-21 19:38:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:38:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 19:38:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1810 transitions. [2021-10-21 19:38:27,538 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8473782771535581 [2021-10-21 19:38:27,538 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1810 transitions. [2021-10-21 19:38:27,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1810 transitions. [2021-10-21 19:38:27,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:27,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1810 transitions. [2021-10-21 19:38:27,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 150.83333333333334) internal successors, (1810), 12 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:27,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:27,547 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:27,547 INFO L186 Difference]: Start difference. First operand has 295 places, 237 transitions, 2338 flow. Second operand 12 states and 1810 transitions. [2021-10-21 19:38:27,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 306 transitions, 3365 flow [2021-10-21 19:38:27,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 306 transitions, 2911 flow, removed 49 selfloop flow, removed 32 redundant places. [2021-10-21 19:38:27,648 INFO L242 Difference]: Finished difference. Result has 278 places, 249 transitions, 2265 flow [2021-10-21 19:38:27,648 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2265, PETRI_PLACES=278, PETRI_TRANSITIONS=249} [2021-10-21 19:38:27,649 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 122 predicate places. [2021-10-21 19:38:27,649 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 249 transitions, 2265 flow [2021-10-21 19:38:27,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:27,649 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:27,650 INFO L254 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] [2021-10-21 19:38:27,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-21 19:38:27,650 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:27,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:27,652 INFO L82 PathProgramCache]: Analyzing trace with hash 281173362, now seen corresponding path program 3 times [2021-10-21 19:38:27,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:27,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434925262] [2021-10-21 19:38:27,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:27,653 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:27,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:27,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434925262] [2021-10-21 19:38:27,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434925262] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:27,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:27,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:38:27,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547147046] [2021-10-21 19:38:27,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:38:27,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:38:27,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:38:27,787 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-21 19:38:27,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 249 transitions, 2265 flow. Second operand has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:27,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:27,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-21 19:38:27,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:28,597 INFO L129 PetriNetUnfolder]: 601/2364 cut-off events. [2021-10-21 19:38:28,597 INFO L130 PetriNetUnfolder]: For 17706/17961 co-relation queries the response was YES. [2021-10-21 19:38:28,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8887 conditions, 2364 events. 601/2364 cut-off events. For 17706/17961 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 19944 event pairs, 42 based on Foata normal form. 89/2354 useless extension candidates. Maximal degree in co-relation 8836. Up to 374 conditions per place. [2021-10-21 19:38:28,635 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 81 selfloop transitions, 52 changer transitions 36/320 dead transitions. [2021-10-21 19:38:28,635 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 320 transitions, 3319 flow [2021-10-21 19:38:28,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:38:28,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 19:38:28,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1813 transitions. [2021-10-21 19:38:28,639 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8487827715355806 [2021-10-21 19:38:28,639 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1813 transitions. [2021-10-21 19:38:28,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1813 transitions. [2021-10-21 19:38:28,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:28,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1813 transitions. [2021-10-21 19:38:28,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 151.08333333333334) internal successors, (1813), 12 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:28,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:28,646 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:28,646 INFO L186 Difference]: Start difference. First operand has 278 places, 249 transitions, 2265 flow. Second operand 12 states and 1813 transitions. [2021-10-21 19:38:28,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 320 transitions, 3319 flow [2021-10-21 19:38:28,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 320 transitions, 3243 flow, removed 26 selfloop flow, removed 3 redundant places. [2021-10-21 19:38:28,745 INFO L242 Difference]: Finished difference. Result has 291 places, 255 transitions, 2447 flow [2021-10-21 19:38:28,746 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2207, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2447, PETRI_PLACES=291, PETRI_TRANSITIONS=255} [2021-10-21 19:38:28,746 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 135 predicate places. [2021-10-21 19:38:28,746 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 255 transitions, 2447 flow [2021-10-21 19:38:28,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:28,747 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:28,747 INFO L254 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] [2021-10-21 19:38:28,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-21 19:38:28,748 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:28,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:28,748 INFO L82 PathProgramCache]: Analyzing trace with hash -298605370, now seen corresponding path program 4 times [2021-10-21 19:38:28,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:28,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162216006] [2021-10-21 19:38:28,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:28,749 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:28,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:28,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:28,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:28,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162216006] [2021-10-21 19:38:28,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162216006] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:28,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:28,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:38:28,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71673504] [2021-10-21 19:38:28,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:38:28,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:28,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:38:28,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:38:28,812 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 178 [2021-10-21 19:38:28,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 255 transitions, 2447 flow. Second operand has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:28,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:28,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 178 [2021-10-21 19:38:28,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:29,459 INFO L129 PetriNetUnfolder]: 411/2248 cut-off events. [2021-10-21 19:38:29,459 INFO L130 PetriNetUnfolder]: For 17817/18297 co-relation queries the response was YES. [2021-10-21 19:38:29,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7950 conditions, 2248 events. 411/2248 cut-off events. For 17817/18297 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 20483 event pairs, 26 based on Foata normal form. 89/2233 useless extension candidates. Maximal degree in co-relation 7895. Up to 271 conditions per place. [2021-10-21 19:38:29,490 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 51 selfloop transitions, 10 changer transitions 1/266 dead transitions. [2021-10-21 19:38:29,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 266 transitions, 2696 flow [2021-10-21 19:38:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:38:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 19:38:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 654 transitions. [2021-10-21 19:38:29,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9185393258426966 [2021-10-21 19:38:29,493 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 654 transitions. [2021-10-21 19:38:29,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 654 transitions. [2021-10-21 19:38:29,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:29,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 654 transitions. [2021-10-21 19:38:29,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:29,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:29,496 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:29,497 INFO L186 Difference]: Start difference. First operand has 291 places, 255 transitions, 2447 flow. Second operand 4 states and 654 transitions. [2021-10-21 19:38:29,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 266 transitions, 2696 flow [2021-10-21 19:38:29,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 266 transitions, 2558 flow, removed 20 selfloop flow, removed 8 redundant places. [2021-10-21 19:38:29,574 INFO L242 Difference]: Finished difference. Result has 288 places, 256 transitions, 2371 flow [2021-10-21 19:38:29,575 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2371, PETRI_PLACES=288, PETRI_TRANSITIONS=256} [2021-10-21 19:38:29,575 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 132 predicate places. [2021-10-21 19:38:29,575 INFO L470 AbstractCegarLoop]: Abstraction has has 288 places, 256 transitions, 2371 flow [2021-10-21 19:38:29,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:29,576 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:29,576 INFO L254 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] [2021-10-21 19:38:29,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-21 19:38:29,577 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:29,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:29,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1484179858, now seen corresponding path program 5 times [2021-10-21 19:38:29,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:29,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955163858] [2021-10-21 19:38:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:29,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:29,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:29,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:29,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955163858] [2021-10-21 19:38:29,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955163858] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:29,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:29,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:38:29,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818603515] [2021-10-21 19:38:29,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:38:29,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:29,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:38:29,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:38:29,711 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-21 19:38:29,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 256 transitions, 2371 flow. Second operand has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:29,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:29,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-21 19:38:29,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:30,537 INFO L129 PetriNetUnfolder]: 575/2450 cut-off events. [2021-10-21 19:38:30,537 INFO L130 PetriNetUnfolder]: For 21866/22313 co-relation queries the response was YES. [2021-10-21 19:38:30,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9448 conditions, 2450 events. 575/2450 cut-off events. For 21866/22313 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 21253 event pairs, 38 based on Foata normal form. 196/2542 useless extension candidates. Maximal degree in co-relation 9391. Up to 344 conditions per place. [2021-10-21 19:38:30,573 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 76 selfloop transitions, 52 changer transitions 47/326 dead transitions. [2021-10-21 19:38:30,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 326 transitions, 3546 flow [2021-10-21 19:38:30,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:38:30,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-21 19:38:30,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2101 transitions. [2021-10-21 19:38:30,577 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8430979133226324 [2021-10-21 19:38:30,577 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2101 transitions. [2021-10-21 19:38:30,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2101 transitions. [2021-10-21 19:38:30,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:30,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2101 transitions. [2021-10-21 19:38:30,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 150.07142857142858) internal successors, (2101), 14 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:30,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 178.0) internal successors, (2670), 15 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:30,585 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 178.0) internal successors, (2670), 15 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:30,585 INFO L186 Difference]: Start difference. First operand has 288 places, 256 transitions, 2371 flow. Second operand 14 states and 2101 transitions. [2021-10-21 19:38:30,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 326 transitions, 3546 flow [2021-10-21 19:38:30,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 326 transitions, 3462 flow, removed 33 selfloop flow, removed 4 redundant places. [2021-10-21 19:38:30,669 INFO L242 Difference]: Finished difference. Result has 303 places, 254 transitions, 2517 flow [2021-10-21 19:38:30,669 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2517, PETRI_PLACES=303, PETRI_TRANSITIONS=254} [2021-10-21 19:38:30,670 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 147 predicate places. [2021-10-21 19:38:30,670 INFO L470 AbstractCegarLoop]: Abstraction has has 303 places, 254 transitions, 2517 flow [2021-10-21 19:38:30,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:30,670 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:30,671 INFO L254 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] [2021-10-21 19:38:30,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-21 19:38:30,671 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:30,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:30,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1296509942, now seen corresponding path program 1 times [2021-10-21 19:38:30,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:30,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093463767] [2021-10-21 19:38:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:30,673 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:30,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:30,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093463767] [2021-10-21 19:38:30,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093463767] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:30,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:30,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-21 19:38:30,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910252230] [2021-10-21 19:38:30,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:38:30,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:30,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:38:30,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:38:30,852 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 178 [2021-10-21 19:38:30,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 254 transitions, 2517 flow. Second operand has 13 states, 13 states have (on average 127.92307692307692) internal successors, (1663), 13 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:30,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:30,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 178 [2021-10-21 19:38:30,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:32,592 INFO L129 PetriNetUnfolder]: 724/3153 cut-off events. [2021-10-21 19:38:32,592 INFO L130 PetriNetUnfolder]: For 32343/32745 co-relation queries the response was YES. [2021-10-21 19:38:32,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12778 conditions, 3153 events. 724/3153 cut-off events. For 32343/32745 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 28793 event pairs, 28 based on Foata normal form. 269/3264 useless extension candidates. Maximal degree in co-relation 12717. Up to 316 conditions per place. [2021-10-21 19:38:32,640 INFO L132 encePairwiseOnDemand]: 158/178 looper letters, 144 selfloop transitions, 119 changer transitions 56/427 dead transitions. [2021-10-21 19:38:32,640 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 427 transitions, 5001 flow [2021-10-21 19:38:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-21 19:38:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-21 19:38:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 5498 transitions. [2021-10-21 19:38:32,651 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7354200107009096 [2021-10-21 19:38:32,651 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 5498 transitions. [2021-10-21 19:38:32,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 5498 transitions. [2021-10-21 19:38:32,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:32,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 5498 transitions. [2021-10-21 19:38:32,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 130.9047619047619) internal successors, (5498), 42 states have internal predecessors, (5498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:32,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 178.0) internal successors, (7654), 43 states have internal predecessors, (7654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:32,678 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 178.0) internal successors, (7654), 43 states have internal predecessors, (7654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:32,678 INFO L186 Difference]: Start difference. First operand has 303 places, 254 transitions, 2517 flow. Second operand 42 states and 5498 transitions. [2021-10-21 19:38:32,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 427 transitions, 5001 flow [2021-10-21 19:38:32,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 427 transitions, 4755 flow, removed 38 selfloop flow, removed 13 redundant places. [2021-10-21 19:38:32,865 INFO L242 Difference]: Finished difference. Result has 349 places, 291 transitions, 3155 flow [2021-10-21 19:38:32,866 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2385, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=3155, PETRI_PLACES=349, PETRI_TRANSITIONS=291} [2021-10-21 19:38:32,867 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 193 predicate places. [2021-10-21 19:38:32,867 INFO L470 AbstractCegarLoop]: Abstraction has has 349 places, 291 transitions, 3155 flow [2021-10-21 19:38:32,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 127.92307692307692) internal successors, (1663), 13 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:32,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:32,868 INFO L254 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] [2021-10-21 19:38:32,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-21 19:38:32,869 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:32,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:32,869 INFO L82 PathProgramCache]: Analyzing trace with hash 372500916, now seen corresponding path program 2 times [2021-10-21 19:38:32,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:32,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986049692] [2021-10-21 19:38:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:32,870 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:33,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:33,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:33,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986049692] [2021-10-21 19:38:33,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986049692] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:33,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:33,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-21 19:38:33,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304479098] [2021-10-21 19:38:33,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:38:33,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:33,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:38:33,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:38:33,053 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 178 [2021-10-21 19:38:33,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 291 transitions, 3155 flow. Second operand has 13 states, 13 states have (on average 127.92307692307692) internal successors, (1663), 13 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:33,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:33,055 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 178 [2021-10-21 19:38:33,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:34,620 INFO L129 PetriNetUnfolder]: 641/2739 cut-off events. [2021-10-21 19:38:34,621 INFO L130 PetriNetUnfolder]: For 30568/30957 co-relation queries the response was YES. [2021-10-21 19:38:34,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12047 conditions, 2739 events. 641/2739 cut-off events. For 30568/30957 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 23908 event pairs, 25 based on Foata normal form. 251/2851 useless extension candidates. Maximal degree in co-relation 11973. Up to 246 conditions per place. [2021-10-21 19:38:34,697 INFO L132 encePairwiseOnDemand]: 160/178 looper letters, 123 selfloop transitions, 104 changer transitions 51/386 dead transitions. [2021-10-21 19:38:34,698 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 386 transitions, 4729 flow [2021-10-21 19:38:34,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-21 19:38:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-21 19:38:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4574 transitions. [2021-10-21 19:38:34,708 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7341894060995184 [2021-10-21 19:38:34,708 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4574 transitions. [2021-10-21 19:38:34,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4574 transitions. [2021-10-21 19:38:34,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:34,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4574 transitions. [2021-10-21 19:38:34,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 130.68571428571428) internal successors, (4574), 35 states have internal predecessors, (4574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:34,737 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 178.0) internal successors, (6408), 36 states have internal predecessors, (6408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:34,739 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 178.0) internal successors, (6408), 36 states have internal predecessors, (6408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:34,740 INFO L186 Difference]: Start difference. First operand has 349 places, 291 transitions, 3155 flow. Second operand 35 states and 4574 transitions. [2021-10-21 19:38:34,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 386 transitions, 4729 flow [2021-10-21 19:38:34,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 386 transitions, 4371 flow, removed 94 selfloop flow, removed 23 redundant places. [2021-10-21 19:38:34,894 INFO L242 Difference]: Finished difference. Result has 355 places, 260 transitions, 2553 flow [2021-10-21 19:38:34,895 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=2886, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2553, PETRI_PLACES=355, PETRI_TRANSITIONS=260} [2021-10-21 19:38:34,895 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 199 predicate places. [2021-10-21 19:38:34,895 INFO L470 AbstractCegarLoop]: Abstraction has has 355 places, 260 transitions, 2553 flow [2021-10-21 19:38:34,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 127.92307692307692) internal successors, (1663), 13 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:34,896 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:34,896 INFO L254 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] [2021-10-21 19:38:34,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-21 19:38:34,897 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:34,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:34,898 INFO L82 PathProgramCache]: Analyzing trace with hash 206605966, now seen corresponding path program 3 times [2021-10-21 19:38:34,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:34,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396007307] [2021-10-21 19:38:34,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:34,899 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:35,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:35,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396007307] [2021-10-21 19:38:35,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396007307] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:35,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:35,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:38:35,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325676793] [2021-10-21 19:38:35,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:38:35,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:35,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:38:35,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:38:35,026 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-21 19:38:35,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 260 transitions, 2553 flow. Second operand has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:35,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:35,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-21 19:38:35,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:35,666 INFO L129 PetriNetUnfolder]: 403/2029 cut-off events. [2021-10-21 19:38:35,666 INFO L130 PetriNetUnfolder]: For 15167/15471 co-relation queries the response was YES. [2021-10-21 19:38:35,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7636 conditions, 2029 events. 403/2029 cut-off events. For 15167/15471 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 16775 event pairs, 41 based on Foata normal form. 194/2103 useless extension candidates. Maximal degree in co-relation 7572. Up to 174 conditions per place. [2021-10-21 19:38:35,700 INFO L132 encePairwiseOnDemand]: 166/178 looper letters, 84 selfloop transitions, 55 changer transitions 32/304 dead transitions. [2021-10-21 19:38:35,700 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 304 transitions, 3469 flow [2021-10-21 19:38:35,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:38:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-21 19:38:35,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1496 transitions. [2021-10-21 19:38:35,703 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8404494382022472 [2021-10-21 19:38:35,703 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1496 transitions. [2021-10-21 19:38:35,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1496 transitions. [2021-10-21 19:38:35,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:35,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1496 transitions. [2021-10-21 19:38:35,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 149.6) internal successors, (1496), 10 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:35,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:35,711 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 178.0) internal successors, (1958), 11 states have internal predecessors, (1958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:35,712 INFO L186 Difference]: Start difference. First operand has 355 places, 260 transitions, 2553 flow. Second operand 10 states and 1496 transitions. [2021-10-21 19:38:35,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 304 transitions, 3469 flow [2021-10-21 19:38:35,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 304 transitions, 2819 flow, removed 10 selfloop flow, removed 64 redundant places. [2021-10-21 19:38:35,785 INFO L242 Difference]: Finished difference. Result has 297 places, 249 transitions, 2113 flow [2021-10-21 19:38:35,786 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2113, PETRI_PLACES=297, PETRI_TRANSITIONS=249} [2021-10-21 19:38:35,786 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 141 predicate places. [2021-10-21 19:38:35,786 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 249 transitions, 2113 flow [2021-10-21 19:38:35,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:35,787 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:35,787 INFO L254 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] [2021-10-21 19:38:35,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-21 19:38:35,788 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:35,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:35,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1472880161, now seen corresponding path program 1 times [2021-10-21 19:38:35,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:35,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865769491] [2021-10-21 19:38:35,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:35,789 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:35,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:35,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865769491] [2021-10-21 19:38:35,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865769491] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:35,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:35,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:38:35,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272625068] [2021-10-21 19:38:35,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:38:35,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:35,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:38:35,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:38:35,910 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-21 19:38:35,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 249 transitions, 2113 flow. Second operand has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:35,912 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:35,912 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-21 19:38:35,912 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:36,342 INFO L129 PetriNetUnfolder]: 352/1764 cut-off events. [2021-10-21 19:38:36,343 INFO L130 PetriNetUnfolder]: For 11599/11885 co-relation queries the response was YES. [2021-10-21 19:38:36,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6101 conditions, 1764 events. 352/1764 cut-off events. For 11599/11885 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 13837 event pairs, 28 based on Foata normal form. 167/1799 useless extension candidates. Maximal degree in co-relation 6052. Up to 169 conditions per place. [2021-10-21 19:38:36,365 INFO L132 encePairwiseOnDemand]: 168/178 looper letters, 41 selfloop transitions, 24 changer transitions 78/269 dead transitions. [2021-10-21 19:38:36,365 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 269 transitions, 2615 flow [2021-10-21 19:38:36,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:38:36,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:38:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1333 transitions. [2021-10-21 19:38:36,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8320848938826467 [2021-10-21 19:38:36,377 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1333 transitions. [2021-10-21 19:38:36,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1333 transitions. [2021-10-21 19:38:36,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:36,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1333 transitions. [2021-10-21 19:38:36,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 148.11111111111111) internal successors, (1333), 9 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:36,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 178.0) internal successors, (1780), 10 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:36,383 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 178.0) internal successors, (1780), 10 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:36,384 INFO L186 Difference]: Start difference. First operand has 297 places, 249 transitions, 2113 flow. Second operand 9 states and 1333 transitions. [2021-10-21 19:38:36,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 269 transitions, 2615 flow [2021-10-21 19:38:36,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 269 transitions, 2485 flow, removed 10 selfloop flow, removed 11 redundant places. [2021-10-21 19:38:36,431 INFO L242 Difference]: Finished difference. Result has 289 places, 186 transitions, 1230 flow [2021-10-21 19:38:36,432 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1230, PETRI_PLACES=289, PETRI_TRANSITIONS=186} [2021-10-21 19:38:36,432 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 133 predicate places. [2021-10-21 19:38:36,432 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 186 transitions, 1230 flow [2021-10-21 19:38:36,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:36,433 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:36,433 INFO L254 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] [2021-10-21 19:38:36,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-21 19:38:36,434 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1512673458, now seen corresponding path program 4 times [2021-10-21 19:38:36,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:36,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258552516] [2021-10-21 19:38:36,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:36,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:36,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:36,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258552516] [2021-10-21 19:38:36,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258552516] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:36,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:36,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:38:36,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716134098] [2021-10-21 19:38:36,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:38:36,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:36,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:38:36,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:38:36,552 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-21 19:38:36,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 186 transitions, 1230 flow. Second operand has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:36,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:36,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-21 19:38:36,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:36,944 INFO L129 PetriNetUnfolder]: 241/1221 cut-off events. [2021-10-21 19:38:36,944 INFO L130 PetriNetUnfolder]: For 6419/6598 co-relation queries the response was YES. [2021-10-21 19:38:36,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3999 conditions, 1221 events. 241/1221 cut-off events. For 6419/6598 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8672 event pairs, 40 based on Foata normal form. 72/1220 useless extension candidates. Maximal degree in co-relation 3950. Up to 123 conditions per place. [2021-10-21 19:38:36,958 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 49 selfloop transitions, 37 changer transitions 14/217 dead transitions. [2021-10-21 19:38:36,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 217 transitions, 1791 flow [2021-10-21 19:38:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:38:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-21 19:38:36,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1621 transitions. [2021-10-21 19:38:36,961 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8278855975485189 [2021-10-21 19:38:36,961 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1621 transitions. [2021-10-21 19:38:36,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1621 transitions. [2021-10-21 19:38:36,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:36,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1621 transitions. [2021-10-21 19:38:36,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 147.36363636363637) internal successors, (1621), 11 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:36,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 178.0) internal successors, (2136), 12 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:36,969 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 178.0) internal successors, (2136), 12 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:36,969 INFO L186 Difference]: Start difference. First operand has 289 places, 186 transitions, 1230 flow. Second operand 11 states and 1621 transitions. [2021-10-21 19:38:36,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 217 transitions, 1791 flow [2021-10-21 19:38:36,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 217 transitions, 1398 flow, removed 14 selfloop flow, removed 48 redundant places. [2021-10-21 19:38:37,003 INFO L242 Difference]: Finished difference. Result has 231 places, 191 transitions, 1119 flow [2021-10-21 19:38:37,004 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1119, PETRI_PLACES=231, PETRI_TRANSITIONS=191} [2021-10-21 19:38:37,004 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 75 predicate places. [2021-10-21 19:38:37,005 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 191 transitions, 1119 flow [2021-10-21 19:38:37,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,005 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:37,006 INFO L254 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] [2021-10-21 19:38:37,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-21 19:38:37,006 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:37,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:37,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1125678996, now seen corresponding path program 5 times [2021-10-21 19:38:37,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:37,007 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793490670] [2021-10-21 19:38:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:37,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:37,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:37,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793490670] [2021-10-21 19:38:37,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793490670] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:37,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:37,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:38:37,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061555721] [2021-10-21 19:38:37,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:38:37,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:37,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:38:37,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:38:37,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 178 [2021-10-21 19:38:37,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 191 transitions, 1119 flow. Second operand has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:37,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 178 [2021-10-21 19:38:37,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:37,259 INFO L129 PetriNetUnfolder]: 174/1000 cut-off events. [2021-10-21 19:38:37,260 INFO L130 PetriNetUnfolder]: For 5049/5233 co-relation queries the response was YES. [2021-10-21 19:38:37,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2924 conditions, 1000 events. 174/1000 cut-off events. For 5049/5233 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7088 event pairs, 14 based on Foata normal form. 89/1025 useless extension candidates. Maximal degree in co-relation 2888. Up to 100 conditions per place. [2021-10-21 19:38:37,269 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 38 selfloop transitions, 14 changer transitions 0/195 dead transitions. [2021-10-21 19:38:37,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 195 transitions, 1304 flow [2021-10-21 19:38:37,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:38:37,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-21 19:38:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 651 transitions. [2021-10-21 19:38:37,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9143258426966292 [2021-10-21 19:38:37,271 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 651 transitions. [2021-10-21 19:38:37,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 651 transitions. [2021-10-21 19:38:37,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:37,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 651 transitions. [2021-10-21 19:38:37,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.75) internal successors, (651), 4 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,275 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,275 INFO L186 Difference]: Start difference. First operand has 231 places, 191 transitions, 1119 flow. Second operand 4 states and 651 transitions. [2021-10-21 19:38:37,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 195 transitions, 1304 flow [2021-10-21 19:38:37,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 195 transitions, 1137 flow, removed 24 selfloop flow, removed 19 redundant places. [2021-10-21 19:38:37,293 INFO L242 Difference]: Finished difference. Result has 215 places, 189 transitions, 1015 flow [2021-10-21 19:38:37,293 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1015, PETRI_PLACES=215, PETRI_TRANSITIONS=189} [2021-10-21 19:38:37,294 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 59 predicate places. [2021-10-21 19:38:37,294 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 189 transitions, 1015 flow [2021-10-21 19:38:37,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.5) internal successors, (642), 4 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,294 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:37,295 INFO L254 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] [2021-10-21 19:38:37,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-21 19:38:37,295 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:37,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:37,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1376830462, now seen corresponding path program 6 times [2021-10-21 19:38:37,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:37,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192426620] [2021-10-21 19:38:37,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:37,297 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:37,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:37,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:37,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192426620] [2021-10-21 19:38:37,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192426620] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:37,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:37,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:38:37,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657988776] [2021-10-21 19:38:37,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:38:37,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:37,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:38:37,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:38:37,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-21 19:38:37,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 189 transitions, 1015 flow. Second operand has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:37,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-21 19:38:37,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:37,772 INFO L129 PetriNetUnfolder]: 239/1289 cut-off events. [2021-10-21 19:38:37,772 INFO L130 PetriNetUnfolder]: For 7618/7979 co-relation queries the response was YES. [2021-10-21 19:38:37,781 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 1289 events. 239/1289 cut-off events. For 7618/7979 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 9507 event pairs, 29 based on Foata normal form. 195/1400 useless extension candidates. Maximal degree in co-relation 3708. Up to 122 conditions per place. [2021-10-21 19:38:37,785 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 42 selfloop transitions, 43 changer transitions 21/220 dead transitions. [2021-10-21 19:38:37,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 220 transitions, 1552 flow [2021-10-21 19:38:37,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:38:37,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-21 19:38:37,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1766 transitions. [2021-10-21 19:38:37,788 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8267790262172284 [2021-10-21 19:38:37,788 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1766 transitions. [2021-10-21 19:38:37,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1766 transitions. [2021-10-21 19:38:37,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:37,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1766 transitions. [2021-10-21 19:38:37,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 147.16666666666666) internal successors, (1766), 12 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,795 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 178.0) internal successors, (2314), 13 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,795 INFO L186 Difference]: Start difference. First operand has 215 places, 189 transitions, 1015 flow. Second operand 12 states and 1766 transitions. [2021-10-21 19:38:37,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 220 transitions, 1552 flow [2021-10-21 19:38:37,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 1493 flow, removed 26 selfloop flow, removed 1 redundant places. [2021-10-21 19:38:37,813 INFO L242 Difference]: Finished difference. Result has 229 places, 187 transitions, 1173 flow [2021-10-21 19:38:37,814 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1173, PETRI_PLACES=229, PETRI_TRANSITIONS=187} [2021-10-21 19:38:37,814 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 73 predicate places. [2021-10-21 19:38:37,814 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 187 transitions, 1173 flow [2021-10-21 19:38:37,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,814 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-21 19:38:37,815 INFO L254 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] [2021-10-21 19:38:37,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-21 19:38:37,815 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-21 19:38:37,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:38:37,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1780150344, now seen corresponding path program 1 times [2021-10-21 19:38:37,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:38:37,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492444246] [2021-10-21 19:38:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:38:37,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:38:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:38:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:38:37,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:38:37,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492444246] [2021-10-21 19:38:37,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492444246] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:38:37,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:38:37,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-21 19:38:37,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079653757] [2021-10-21 19:38:37,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:38:37,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:38:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:38:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:38:37,938 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-21 19:38:37,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 187 transitions, 1173 flow. Second operand has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:37,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-21 19:38:37,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-21 19:38:37,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-21 19:38:38,226 INFO L129 PetriNetUnfolder]: 185/971 cut-off events. [2021-10-21 19:38:38,226 INFO L130 PetriNetUnfolder]: For 6523/6938 co-relation queries the response was YES. [2021-10-21 19:38:38,234 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3042 conditions, 971 events. 185/971 cut-off events. For 6523/6938 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 6096 event pairs, 17 based on Foata normal form. 207/1094 useless extension candidates. Maximal degree in co-relation 3008. Up to 122 conditions per place. [2021-10-21 19:38:38,235 INFO L132 encePairwiseOnDemand]: 168/178 looper letters, 0 selfloop transitions, 0 changer transitions 200/200 dead transitions. [2021-10-21 19:38:38,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 200 transitions, 1465 flow [2021-10-21 19:38:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:38:38,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-21 19:38:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1322 transitions. [2021-10-21 19:38:38,238 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8252184769038702 [2021-10-21 19:38:38,239 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1322 transitions. [2021-10-21 19:38:38,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1322 transitions. [2021-10-21 19:38:38,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:38:38,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1322 transitions. [2021-10-21 19:38:38,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 146.88888888888889) internal successors, (1322), 9 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:38,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 178.0) internal successors, (1780), 10 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:38,246 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 178.0) internal successors, (1780), 10 states have internal predecessors, (1780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:38,247 INFO L186 Difference]: Start difference. First operand has 229 places, 187 transitions, 1173 flow. Second operand 9 states and 1322 transitions. [2021-10-21 19:38:38,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 200 transitions, 1465 flow [2021-10-21 19:38:38,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 200 transitions, 1343 flow, removed 15 selfloop flow, removed 12 redundant places. [2021-10-21 19:38:38,271 INFO L242 Difference]: Finished difference. Result has 219 places, 0 transitions, 0 flow [2021-10-21 19:38:38,272 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=178, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=219, PETRI_TRANSITIONS=0} [2021-10-21 19:38:38,272 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 63 predicate places. [2021-10-21 19:38:38,272 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 0 transitions, 0 flow [2021-10-21 19:38:38,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 145.125) internal successors, (1161), 8 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:38:38,276 INFO L764 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:38:38,277 INFO L764 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:38:38,277 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-21 19:38:38,277 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-21 19:38:38,278 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-21 19:38:38,278 INFO L764 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:38:38,278 INFO L764 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:38:38,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-21 19:38:38,288 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-21 19:38:38,288 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:38:38,291 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:38:38 BasicIcfg [2021-10-21 19:38:38,291 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:38:38,292 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:38:38,292 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:38:38,292 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:38:38,293 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:37:52" (3/4) ... [2021-10-21 19:38:38,296 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:38:38,303 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader1 [2021-10-21 19:38:38,303 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader2 [2021-10-21 19:38:38,303 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_updater [2021-10-21 19:38:38,309 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-21 19:38:38,309 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:38:38,309 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:38:38,310 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:38:38,353 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:38:38,354 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:38:38,355 INFO L168 Benchmark]: Toolchain (without parser) took 48496.12 ms. Allocated memory was 115.3 MB in the beginning and 8.2 GB in the end (delta: 8.1 GB). Free memory was 78.4 MB in the beginning and 5.1 GB in the end (delta: -5.0 GB). Peak memory consumption was 3.1 GB. Max. memory is 16.1 GB. [2021-10-21 19:38:38,356 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:38:38,357 INFO L168 Benchmark]: CACSL2BoogieTranslator took 877.96 ms. Allocated memory is still 115.3 MB. Free memory was 78.4 MB in the beginning and 78.9 MB in the end (delta: -517.8 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:38,357 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.68 ms. Allocated memory is still 115.3 MB. Free memory was 78.9 MB in the beginning and 76.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:38,358 INFO L168 Benchmark]: Boogie Preprocessor took 93.85 ms. Allocated memory is still 115.3 MB. Free memory was 76.1 MB in the beginning and 74.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:38,358 INFO L168 Benchmark]: RCFGBuilder took 1476.13 ms. Allocated memory is still 115.3 MB. Free memory was 74.0 MB in the beginning and 82.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:38,359 INFO L168 Benchmark]: TraceAbstraction took 45849.02 ms. Allocated memory was 115.3 MB in the beginning and 8.2 GB in the end (delta: 8.1 GB). Free memory was 82.0 MB in the beginning and 5.1 GB in the end (delta: -5.0 GB). Peak memory consumption was 3.1 GB. Max. memory is 16.1 GB. [2021-10-21 19:38:38,360 INFO L168 Benchmark]: Witness Printer took 61.89 ms. Allocated memory is still 8.2 GB. Free memory was 5.1 GB in the beginning and 5.1 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:38:38,363 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 86.0 MB. Free memory was 56.7 MB in the beginning and 56.7 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 877.96 ms. Allocated memory is still 115.3 MB. Free memory was 78.4 MB in the beginning and 78.9 MB in the end (delta: -517.8 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 124.68 ms. Allocated memory is still 115.3 MB. Free memory was 78.9 MB in the beginning and 76.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 93.85 ms. Allocated memory is still 115.3 MB. Free memory was 76.1 MB in the beginning and 74.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1476.13 ms. Allocated memory is still 115.3 MB. Free memory was 74.0 MB in the beginning and 82.5 MB in the end (delta: -8.5 MB). Peak memory consumption was 40.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 45849.02 ms. Allocated memory was 115.3 MB in the beginning and 8.2 GB in the end (delta: 8.1 GB). Free memory was 82.0 MB in the beginning and 5.1 GB in the end (delta: -5.0 GB). Peak memory consumption was 3.1 GB. Max. memory is 16.1 GB. * Witness Printer took 61.89 ms. Allocated memory is still 8.2 GB. Free memory was 5.1 GB in the beginning and 5.1 GB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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, 264 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 33.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 45536.9ms, OverallIterations: 33, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 39745.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 142.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 689 SDtfs, 2788 SDslu, 1651 SDs, 0 SdLazy, 6794 SolverSat, 732 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4883.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 470 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 3747.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3394occurred in iteration=20, InterpolantAutomatonStates: 381, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 236.6ms SsaConstructionTime, 696.5ms SatisfiabilityAnalysisTime, 4092.5ms InterpolantComputationTime, 2664 NumberOfCodeBlocks, 2664 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 2631 ConstructedInterpolants, 0 QuantifiedInterpolants, 13019 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 33 InterpolantComputations, 33 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! [2021-10-21 19:38:38,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4fe798f9-9681-42e6-8948-0ee8d7d2a3f5/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...