./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/qrcu-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg --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-b2eff8b [2021-10-28 09:16:07,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:16:07,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:16:07,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:16:07,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:16:07,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:16:07,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:16:07,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:16:07,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:16:07,221 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:16:07,223 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:16:07,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:16:07,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:16:07,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:16:07,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:16:07,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:16:07,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:16:07,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:16:07,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:16:07,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:16:07,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:16:07,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:16:07,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:16:07,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:16:07,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:16:07,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:16:07,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:16:07,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:16:07,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:16:07,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:16:07,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:16:07,278 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:16:07,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:16:07,282 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:16:07,283 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:16:07,284 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:16:07,285 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:16:07,285 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:16:07,285 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:16:07,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:16:07,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:16:07,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:16:07,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:16:07,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:16:07,334 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:16:07,334 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:16:07,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:16:07,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:16:07,343 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:16:07,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:16:07,344 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:16:07,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:16:07,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:16:07,346 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:16:07,346 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:16:07,346 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:16:07,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:16:07,347 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:16:07,347 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:16:07,347 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:16:07,347 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:16:07,348 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:16:07,348 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:16:07,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:16:07,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:16:07,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:16:07,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:16:07,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:16:07,349 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:16:07,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:16:07,350 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:16:07,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:16:07,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:16:07,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:16:07,353 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_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2021-10-28 09:16:07,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:16:07,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:16:07,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:16:07,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:16:07,687 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:16:07,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/pthread-atomic/qrcu-1.i [2021-10-28 09:16:07,795 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/data/5f2279680/42f682988033414194cf1de6c8999843/FLAG18d83b695 [2021-10-28 09:16:08,442 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:16:08,443 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/sv-benchmarks/c/pthread-atomic/qrcu-1.i [2021-10-28 09:16:08,459 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/data/5f2279680/42f682988033414194cf1de6c8999843/FLAG18d83b695 [2021-10-28 09:16:08,665 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/data/5f2279680/42f682988033414194cf1de6c8999843 [2021-10-28 09:16:08,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:16:08,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:16:08,677 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:16:08,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:16:08,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:16:08,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:16:08" (1/1) ... [2021-10-28 09:16:08,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d28c0f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:08, skipping insertion in model container [2021-10-28 09:16:08,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:16:08" (1/1) ... [2021-10-28 09:16:08,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:16:08,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:16:09,227 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_aaa54641-186c-4db4-bb42-236b19dd9cec/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2021-10-28 09:16:09,241 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_aaa54641-186c-4db4-bb42-236b19dd9cec/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2021-10-28 09:16:09,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:16:09,292 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:16:09,369 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_aaa54641-186c-4db4-bb42-236b19dd9cec/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30694,30707] [2021-10-28 09:16:09,378 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_aaa54641-186c-4db4-bb42-236b19dd9cec/sv-benchmarks/c/pthread-atomic/qrcu-1.i[30916,30929] [2021-10-28 09:16:09,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:16:09,449 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:16:09,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09 WrapperNode [2021-10-28 09:16:09,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:16:09,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:16:09,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:16:09,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:16:09,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (1/1) ... [2021-10-28 09:16:09,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (1/1) ... [2021-10-28 09:16:09,529 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:16:09,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:16:09,531 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:16:09,531 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:16:09,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (1/1) ... [2021-10-28 09:16:09,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (1/1) ... [2021-10-28 09:16:09,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (1/1) ... [2021-10-28 09:16:09,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (1/1) ... [2021-10-28 09:16:09,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (1/1) ... [2021-10-28 09:16:09,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (1/1) ... [2021-10-28 09:16:09,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (1/1) ... [2021-10-28 09:16:09,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:16:09,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:16:09,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:16:09,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:16:09,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (1/1) ... [2021-10-28 09:16:09,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:16:09,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:16:09,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:16:09,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:16:09,675 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2021-10-28 09:16:09,676 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2021-10-28 09:16:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2021-10-28 09:16:09,676 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2021-10-28 09:16:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:16:09,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:16:09,677 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2021-10-28 09:16:09,677 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2021-10-28 09:16:09,677 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-10-28 09:16:09,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:16:09,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:16:09,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:16:09,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:16:09,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:16:09,680 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-28 09:16:10,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:16:10,818 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 09:16:10,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:10 BoogieIcfgContainer [2021-10-28 09:16:10,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:16:10,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:16:10,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:16:10,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:16:10,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:16:08" (1/3) ... [2021-10-28 09:16:10,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a7484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:16:10, skipping insertion in model container [2021-10-28 09:16:10,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:09" (2/3) ... [2021-10-28 09:16:10,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68a7484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:16:10, skipping insertion in model container [2021-10-28 09:16:10,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:10" (3/3) ... [2021-10-28 09:16:10,831 INFO L111 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2021-10-28 09:16:10,837 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-10-28 09:16:10,837 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:16:10,837 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 09:16:10,838 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-28 09:16:10,889 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,890 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,890 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,890 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,890 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,891 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,891 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,891 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,892 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,892 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,892 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,893 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,893 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,893 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,894 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,894 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,894 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,894 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,895 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,895 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,895 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,896 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,896 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,896 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,897 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,897 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,897 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,898 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,898 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,898 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,898 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,899 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,899 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,899 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,899 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,900 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,900 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,900 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,900 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,901 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,901 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,901 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,901 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,902 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,902 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,902 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,902 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,903 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,903 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,903 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,903 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,905 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,905 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,906 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,906 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,906 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,906 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,907 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,907 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,907 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,907 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,907 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,908 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,908 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,908 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,908 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,909 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,909 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,909 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,909 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,910 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,910 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,911 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,911 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,911 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,911 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,912 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,912 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,912 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,912 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,913 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,913 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,913 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,914 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,914 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,914 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,915 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,915 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,915 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,916 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,916 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,916 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,916 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,917 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,917 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,918 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,918 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,918 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,919 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,919 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,919 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,919 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,920 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,920 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,920 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,920 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,921 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,921 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,921 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,921 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,922 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,922 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,922 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,922 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,923 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,923 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,923 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,923 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,924 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,924 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,924 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,924 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,925 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,925 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,925 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,926 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,926 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,926 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,926 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,927 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,927 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,927 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,927 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,928 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,928 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,928 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,928 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,929 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,929 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,929 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,931 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,931 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,931 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,932 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,932 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,932 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,932 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,933 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,933 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,933 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,933 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,934 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,934 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,934 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,935 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,935 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,935 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,935 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,936 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,936 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,936 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,936 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,937 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,937 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,937 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,937 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,938 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,938 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,938 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,938 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,939 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,939 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,939 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,939 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,940 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,940 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,940 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,940 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,940 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,941 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,941 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,941 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,941 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,942 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,942 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,942 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,943 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,943 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,943 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,943 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,944 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,944 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,944 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,944 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,945 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,945 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,945 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,945 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,946 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,946 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,946 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,946 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,947 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,947 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,947 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,947 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,948 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,948 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,948 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,948 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,949 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,949 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,949 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,950 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,950 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,950 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,950 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,951 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,951 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,951 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,984 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,985 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,992 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,992 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,993 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,993 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:10,993 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,002 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,003 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,003 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,003 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,003 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,003 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,004 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,004 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,004 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,004 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,004 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,005 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,005 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,005 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,005 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,006 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,006 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,006 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,006 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,006 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,007 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,007 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,007 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,007 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,007 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,008 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,008 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,008 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,008 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,009 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,009 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,009 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,009 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,010 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,010 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,010 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,010 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,010 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,011 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,011 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,011 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,011 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,012 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,012 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,012 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,012 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,013 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,013 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,013 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,014 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,014 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,014 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,014 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,014 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,015 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,015 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,015 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,015 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,015 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,015 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,016 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,016 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,016 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,017 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,017 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,017 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_~readerstart2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,017 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,017 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#in~readerstart2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,018 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,018 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,018 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,018 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_~readerstart2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,019 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,019 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#in~readerstart2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,019 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,019 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,020 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,020 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,020 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,020 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_~readerstart2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,020 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,020 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#in~readerstart2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,021 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,021 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,021 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,021 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,021 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,022 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_~readerstart2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,022 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,022 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#in~readerstart2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,022 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,023 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,023 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,023 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,023 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,024 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,024 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,024 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,024 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,024 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,025 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,026 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,026 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,026 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,026 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,026 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,027 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,027 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,027 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,027 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,028 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,028 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,028 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,028 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,028 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,029 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,030 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,030 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,030 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,031 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,032 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,032 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,033 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,034 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,034 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,038 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,039 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,039 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem22| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,039 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,039 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#in~readerstart1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,040 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#in~readerstart2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,040 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~mem23| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,040 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,041 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,041 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,041 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,042 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,042 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_~readerstart1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,042 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress1_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,042 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~nondet17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,042 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,043 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,043 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,043 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_~readerstart2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,043 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart2~0.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,044 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart1.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,044 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_check_progress2_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,044 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_~#readerstart1~0.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,044 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,044 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,045 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,045 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,045 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_~readerstart2.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,045 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,046 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,046 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,046 WARN L313 ript$VariableManager]: TermVariabe qrcu_updaterThread1of1ForFork0_~sum~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,046 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0___VERIFIER_atomic_take_snapshot_#in~readerstart2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,047 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,047 WARN L313 ript$VariableManager]: TermVariabe |qrcu_updaterThread1of1ForFork0_#t~post20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,049 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,050 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,050 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,050 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,051 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,051 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,051 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#t~nondet12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,051 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,051 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,052 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,052 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,052 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,052 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~myidx~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,053 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,053 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,053 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,053 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,054 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,054 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,056 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,056 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,056 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,057 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~myidx~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,057 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,057 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,057 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,058 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,058 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use1_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,058 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,058 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,059 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,059 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#t~nondet14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,059 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,059 WARN L313 ript$VariableManager]: TermVariabe qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_~myidx not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,060 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use2_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,060 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#in~myidx| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,060 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,060 WARN L313 ript$VariableManager]: TermVariabe |qrcu_reader2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-28 09:16:11,069 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-28 09:16:11,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:16:11,142 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 [2021-10-28 09:16:11,142 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-28 09:16:11,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 170 places, 178 transitions, 380 flow [2021-10-28 09:16:11,232 INFO L129 PetriNetUnfolder]: 18/175 cut-off events. [2021-10-28 09:16:11,232 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:16:11,239 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. [2021-10-28 09:16:11,239 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 178 transitions, 380 flow [2021-10-28 09:16:11,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 164 transitions, 343 flow [2021-10-28 09:16:11,289 INFO L129 PetriNetUnfolder]: 9/117 cut-off events. [2021-10-28 09:16:11,290 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-28 09:16:11,290 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:11,291 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] [2021-10-28 09:16:11,291 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:11,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:11,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1955550272, now seen corresponding path program 1 times [2021-10-28 09:16:11,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:11,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375830030] [2021-10-28 09:16:11,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:11,310 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:11,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:11,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:11,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375830030] [2021-10-28 09:16:11,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375830030] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:11,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:11,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:16:11,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670126252] [2021-10-28 09:16:11,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:16:11,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:11,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:16:11,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:16:11,688 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 178 [2021-10-28 09:16:11,698 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) [2021-10-28 09:16:11,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:11,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 178 [2021-10-28 09:16:11,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:11,826 INFO L129 PetriNetUnfolder]: 11/173 cut-off events. [2021-10-28 09:16:11,826 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-28 09:16:11,832 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. [2021-10-28 09:16:11,835 INFO L132 encePairwiseOnDemand]: 169/178 looper letters, 13 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2021-10-28 09:16:11,836 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 159 transitions, 363 flow [2021-10-28 09:16:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:16:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:16:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2021-10-28 09:16:11,860 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9363295880149812 [2021-10-28 09:16:11,861 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2021-10-28 09:16:11,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2021-10-28 09:16:11,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:11,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2021-10-28 09:16:11,878 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) [2021-10-28 09:16:11,894 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) [2021-10-28 09:16:11,895 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) [2021-10-28 09:16:11,898 INFO L186 Difference]: Start difference. First operand has 156 places, 164 transitions, 343 flow. Second operand 3 states and 500 transitions. [2021-10-28 09:16:11,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 159 transitions, 363 flow [2021-10-28 09:16:11,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 159 transitions, 354 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-10-28 09:16:11,915 INFO L242 Difference]: Finished difference. Result has 155 places, 159 transitions, 336 flow [2021-10-28 09:16:11,918 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} [2021-10-28 09:16:11,919 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, -1 predicate places. [2021-10-28 09:16:11,919 INFO L470 AbstractCegarLoop]: Abstraction has has 155 places, 159 transitions, 336 flow [2021-10-28 09:16:11,920 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) [2021-10-28 09:16:11,921 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:11,921 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] [2021-10-28 09:16:11,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:16:11,922 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1930528012, now seen corresponding path program 1 times [2021-10-28 09:16:11,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:11,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948379597] [2021-10-28 09:16:11,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:11,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:12,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:12,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948379597] [2021-10-28 09:16:12,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948379597] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:12,167 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:12,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:16:12,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733315856] [2021-10-28 09:16:12,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:16:12,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:12,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:16:12,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:16:12,176 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 178 [2021-10-28 09:16:12,178 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) [2021-10-28 09:16:12,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:12,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 178 [2021-10-28 09:16:12,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:12,268 INFO L129 PetriNetUnfolder]: 22/282 cut-off events. [2021-10-28 09:16:12,268 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2021-10-28 09:16:12,271 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. [2021-10-28 09:16:12,274 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 4 selfloop transitions, 2 changer transitions 0/160 dead transitions. [2021-10-28 09:16:12,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 160 transitions, 350 flow [2021-10-28 09:16:12,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:16:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:16:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2021-10-28 09:16:12,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.951310861423221 [2021-10-28 09:16:12,277 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2021-10-28 09:16:12,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2021-10-28 09:16:12,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:12,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2021-10-28 09:16:12,298 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) [2021-10-28 09:16:12,301 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) [2021-10-28 09:16:12,302 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) [2021-10-28 09:16:12,302 INFO L186 Difference]: Start difference. First operand has 155 places, 159 transitions, 336 flow. Second operand 3 states and 508 transitions. [2021-10-28 09:16:12,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 160 transitions, 350 flow [2021-10-28 09:16:12,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 160 transitions, 348 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 09:16:12,313 INFO L242 Difference]: Finished difference. Result has 157 places, 159 transitions, 342 flow [2021-10-28 09:16:12,314 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} [2021-10-28 09:16:12,314 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 1 predicate places. [2021-10-28 09:16:12,314 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 159 transitions, 342 flow [2021-10-28 09:16:12,315 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) [2021-10-28 09:16:12,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:12,315 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] [2021-10-28 09:16:12,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:16:12,316 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:12,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:12,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1547913360, now seen corresponding path program 1 times [2021-10-28 09:16:12,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:12,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980101949] [2021-10-28 09:16:12,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:12,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:12,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:12,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:12,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980101949] [2021-10-28 09:16:12,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980101949] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:12,559 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:12,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:16:12,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179265842] [2021-10-28 09:16:12,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:16:12,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:16:12,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:16:12,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 178 [2021-10-28 09:16:12,565 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) [2021-10-28 09:16:12,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:12,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 178 [2021-10-28 09:16:12,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:13,066 INFO L129 PetriNetUnfolder]: 375/1365 cut-off events. [2021-10-28 09:16:13,066 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-28 09:16:13,078 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. [2021-10-28 09:16:13,092 INFO L132 encePairwiseOnDemand]: 171/178 looper letters, 45 selfloop transitions, 11 changer transitions 2/191 dead transitions. [2021-10-28 09:16:13,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 191 transitions, 524 flow [2021-10-28 09:16:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:16:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 09:16:13,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1082 transitions. [2021-10-28 09:16:13,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8683788121990369 [2021-10-28 09:16:13,098 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1082 transitions. [2021-10-28 09:16:13,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1082 transitions. [2021-10-28 09:16:13,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:13,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1082 transitions. [2021-10-28 09:16:13,103 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) [2021-10-28 09:16:13,108 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) [2021-10-28 09:16:13,109 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) [2021-10-28 09:16:13,109 INFO L186 Difference]: Start difference. First operand has 157 places, 159 transitions, 342 flow. Second operand 7 states and 1082 transitions. [2021-10-28 09:16:13,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 191 transitions, 524 flow [2021-10-28 09:16:13,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 191 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 09:16:13,122 INFO L242 Difference]: Finished difference. Result has 164 places, 168 transitions, 400 flow [2021-10-28 09:16:13,123 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} [2021-10-28 09:16:13,123 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 8 predicate places. [2021-10-28 09:16:13,123 INFO L470 AbstractCegarLoop]: Abstraction has has 164 places, 168 transitions, 400 flow [2021-10-28 09:16:13,124 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) [2021-10-28 09:16:13,124 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:13,125 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] [2021-10-28 09:16:13,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:16:13,125 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:13,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1536558348, now seen corresponding path program 1 times [2021-10-28 09:16:13,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:13,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437704776] [2021-10-28 09:16:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:13,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:13,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:13,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:13,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437704776] [2021-10-28 09:16:13,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437704776] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:13,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:13,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:16:13,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327986626] [2021-10-28 09:16:13,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:16:13,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:13,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:16:13,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:16:13,366 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 178 [2021-10-28 09:16:13,368 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) [2021-10-28 09:16:13,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:13,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 178 [2021-10-28 09:16:13,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:14,165 INFO L129 PetriNetUnfolder]: 702/2466 cut-off events. [2021-10-28 09:16:14,166 INFO L130 PetriNetUnfolder]: For 225/237 co-relation queries the response was YES. [2021-10-28 09:16:14,193 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. [2021-10-28 09:16:14,217 INFO L132 encePairwiseOnDemand]: 168/178 looper letters, 67 selfloop transitions, 18 changer transitions 2/214 dead transitions. [2021-10-28 09:16:14,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 214 transitions, 701 flow [2021-10-28 09:16:14,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:16:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:16:14,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1406 transitions. [2021-10-28 09:16:14,224 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7898876404494382 [2021-10-28 09:16:14,225 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1406 transitions. [2021-10-28 09:16:14,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1406 transitions. [2021-10-28 09:16:14,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:14,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1406 transitions. [2021-10-28 09:16:14,233 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) [2021-10-28 09:16:14,240 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) [2021-10-28 09:16:14,243 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) [2021-10-28 09:16:14,243 INFO L186 Difference]: Start difference. First operand has 164 places, 168 transitions, 400 flow. Second operand 10 states and 1406 transitions. [2021-10-28 09:16:14,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 214 transitions, 701 flow [2021-10-28 09:16:14,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 214 transitions, 701 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 09:16:14,257 INFO L242 Difference]: Finished difference. Result has 178 places, 184 transitions, 516 flow [2021-10-28 09:16:14,258 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} [2021-10-28 09:16:14,258 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 22 predicate places. [2021-10-28 09:16:14,259 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 184 transitions, 516 flow [2021-10-28 09:16:14,259 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) [2021-10-28 09:16:14,260 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:14,260 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] [2021-10-28 09:16:14,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:16:14,261 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:14,261 INFO L85 PathProgramCache]: Analyzing trace with hash 148677766, now seen corresponding path program 2 times [2021-10-28 09:16:14,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:14,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193066951] [2021-10-28 09:16:14,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:14,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:14,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:14,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:14,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193066951] [2021-10-28 09:16:14,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193066951] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:14,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:14,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:16:14,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988512235] [2021-10-28 09:16:14,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:16:14,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:14,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:16:14,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:16:14,493 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 178 [2021-10-28 09:16:14,494 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) [2021-10-28 09:16:14,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:14,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 178 [2021-10-28 09:16:14,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:15,475 INFO L129 PetriNetUnfolder]: 1098/3180 cut-off events. [2021-10-28 09:16:15,476 INFO L130 PetriNetUnfolder]: For 158/158 co-relation queries the response was YES. [2021-10-28 09:16:15,507 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. [2021-10-28 09:16:15,537 INFO L132 encePairwiseOnDemand]: 160/178 looper letters, 74 selfloop transitions, 31 changer transitions 0/254 dead transitions. [2021-10-28 09:16:15,537 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 254 transitions, 896 flow [2021-10-28 09:16:15,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:16:15,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-28 09:16:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1219 transitions. [2021-10-28 09:16:15,543 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8560393258426966 [2021-10-28 09:16:15,543 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1219 transitions. [2021-10-28 09:16:15,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1219 transitions. [2021-10-28 09:16:15,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:15,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1219 transitions. [2021-10-28 09:16:15,550 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) [2021-10-28 09:16:15,554 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) [2021-10-28 09:16:15,555 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) [2021-10-28 09:16:15,556 INFO L186 Difference]: Start difference. First operand has 178 places, 184 transitions, 516 flow. Second operand 8 states and 1219 transitions. [2021-10-28 09:16:15,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 254 transitions, 896 flow [2021-10-28 09:16:15,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 254 transitions, 896 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 09:16:15,573 INFO L242 Difference]: Finished difference. Result has 191 places, 217 transitions, 763 flow [2021-10-28 09:16:15,573 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} [2021-10-28 09:16:15,574 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 35 predicate places. [2021-10-28 09:16:15,574 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 217 transitions, 763 flow [2021-10-28 09:16:15,575 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) [2021-10-28 09:16:15,575 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:15,575 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] [2021-10-28 09:16:15,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:16:15,576 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:15,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:15,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1234398556, now seen corresponding path program 1 times [2021-10-28 09:16:15,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:15,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882486151] [2021-10-28 09:16:15,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:15,577 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:15,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:15,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882486151] [2021-10-28 09:16:15,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882486151] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:15,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:15,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:16:15,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452453326] [2021-10-28 09:16:15,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:16:15,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:16:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:16:15,691 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 178 [2021-10-28 09:16:15,693 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) [2021-10-28 09:16:15,693 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:15,693 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 178 [2021-10-28 09:16:15,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:16,751 INFO L129 PetriNetUnfolder]: 1091/3146 cut-off events. [2021-10-28 09:16:16,751 INFO L130 PetriNetUnfolder]: For 2818/2861 co-relation queries the response was YES. [2021-10-28 09:16:16,794 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. [2021-10-28 09:16:16,826 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 92 selfloop transitions, 37 changer transitions 0/278 dead transitions. [2021-10-28 09:16:16,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 278 transitions, 1287 flow [2021-10-28 09:16:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:16:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:16:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1495 transitions. [2021-10-28 09:16:16,834 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8398876404494382 [2021-10-28 09:16:16,837 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1495 transitions. [2021-10-28 09:16:16,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1495 transitions. [2021-10-28 09:16:16,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:16,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1495 transitions. [2021-10-28 09:16:16,846 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) [2021-10-28 09:16:16,853 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) [2021-10-28 09:16:16,854 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) [2021-10-28 09:16:16,855 INFO L186 Difference]: Start difference. First operand has 191 places, 217 transitions, 763 flow. Second operand 10 states and 1495 transitions. [2021-10-28 09:16:16,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 278 transitions, 1287 flow [2021-10-28 09:16:16,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 278 transitions, 1287 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-28 09:16:16,888 INFO L242 Difference]: Finished difference. Result has 205 places, 233 transitions, 1002 flow [2021-10-28 09:16:16,889 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} [2021-10-28 09:16:16,889 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 49 predicate places. [2021-10-28 09:16:16,890 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 233 transitions, 1002 flow [2021-10-28 09:16:16,890 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) [2021-10-28 09:16:16,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:16,891 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] [2021-10-28 09:16:16,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:16:16,892 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1457338230, now seen corresponding path program 1 times [2021-10-28 09:16:16,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:16,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295277708] [2021-10-28 09:16:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:16,893 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:16,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:16,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295277708] [2021-10-28 09:16:16,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295277708] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:16,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:16,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:16:16,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127175462] [2021-10-28 09:16:16,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:16:16,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:16,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:16:16,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:16:16,976 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 178 [2021-10-28 09:16:16,978 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) [2021-10-28 09:16:16,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:16,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 178 [2021-10-28 09:16:16,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:17,518 INFO L129 PetriNetUnfolder]: 548/2410 cut-off events. [2021-10-28 09:16:17,518 INFO L130 PetriNetUnfolder]: For 1878/1936 co-relation queries the response was YES. [2021-10-28 09:16:17,554 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. [2021-10-28 09:16:17,572 INFO L132 encePairwiseOnDemand]: 176/178 looper letters, 14 selfloop transitions, 1 changer transitions 0/235 dead transitions. [2021-10-28 09:16:17,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 235 transitions, 1045 flow [2021-10-28 09:16:17,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:16:17,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:16:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2021-10-28 09:16:17,575 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.951310861423221 [2021-10-28 09:16:17,576 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2021-10-28 09:16:17,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2021-10-28 09:16:17,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:17,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2021-10-28 09:16:17,579 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) [2021-10-28 09:16:17,581 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) [2021-10-28 09:16:17,581 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) [2021-10-28 09:16:17,582 INFO L186 Difference]: Start difference. First operand has 205 places, 233 transitions, 1002 flow. Second operand 3 states and 508 transitions. [2021-10-28 09:16:17,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 235 transitions, 1045 flow [2021-10-28 09:16:17,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 235 transitions, 1024 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-28 09:16:17,603 INFO L242 Difference]: Finished difference. Result has 204 places, 233 transitions, 986 flow [2021-10-28 09:16:17,604 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} [2021-10-28 09:16:17,604 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 48 predicate places. [2021-10-28 09:16:17,604 INFO L470 AbstractCegarLoop]: Abstraction has has 204 places, 233 transitions, 986 flow [2021-10-28 09:16:17,605 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) [2021-10-28 09:16:17,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:17,605 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] [2021-10-28 09:16:17,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:16:17,606 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:17,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:17,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1942044553, now seen corresponding path program 1 times [2021-10-28 09:16:17,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:17,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119945539] [2021-10-28 09:16:17,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:17,607 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:17,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:17,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119945539] [2021-10-28 09:16:17,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119945539] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:17,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:17,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:16:17,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323531583] [2021-10-28 09:16:17,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:16:17,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:16:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:16:17,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 178 [2021-10-28 09:16:17,669 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) [2021-10-28 09:16:17,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:17,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 178 [2021-10-28 09:16:17,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:18,278 INFO L129 PetriNetUnfolder]: 551/2448 cut-off events. [2021-10-28 09:16:18,278 INFO L130 PetriNetUnfolder]: For 1914/1977 co-relation queries the response was YES. [2021-10-28 09:16:18,314 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. [2021-10-28 09:16:18,334 INFO L132 encePairwiseOnDemand]: 176/178 looper letters, 11 selfloop transitions, 1 changer transitions 0/235 dead transitions. [2021-10-28 09:16:18,335 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 235 transitions, 1024 flow [2021-10-28 09:16:18,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:16:18,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:16:18,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2021-10-28 09:16:18,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.951310861423221 [2021-10-28 09:16:18,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2021-10-28 09:16:18,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2021-10-28 09:16:18,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:18,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2021-10-28 09:16:18,341 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) [2021-10-28 09:16:18,343 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) [2021-10-28 09:16:18,344 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) [2021-10-28 09:16:18,344 INFO L186 Difference]: Start difference. First operand has 204 places, 233 transitions, 986 flow. Second operand 3 states and 508 transitions. [2021-10-28 09:16:18,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 235 transitions, 1024 flow [2021-10-28 09:16:18,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 235 transitions, 1023 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 09:16:18,367 INFO L242 Difference]: Finished difference. Result has 206 places, 233 transitions, 990 flow [2021-10-28 09:16:18,368 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} [2021-10-28 09:16:18,369 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 50 predicate places. [2021-10-28 09:16:18,369 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 233 transitions, 990 flow [2021-10-28 09:16:18,369 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) [2021-10-28 09:16:18,370 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:18,370 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] [2021-10-28 09:16:18,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:16:18,371 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:18,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:18,371 INFO L85 PathProgramCache]: Analyzing trace with hash -368555099, now seen corresponding path program 1 times [2021-10-28 09:16:18,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:18,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285398870] [2021-10-28 09:16:18,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:18,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:18,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:18,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285398870] [2021-10-28 09:16:18,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285398870] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:18,454 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:18,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:16:18,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195106236] [2021-10-28 09:16:18,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:16:18,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:18,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:16:18,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:16:18,458 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 178 [2021-10-28 09:16:18,459 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) [2021-10-28 09:16:18,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:18,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 178 [2021-10-28 09:16:18,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:19,503 INFO L129 PetriNetUnfolder]: 1108/4295 cut-off events. [2021-10-28 09:16:19,504 INFO L130 PetriNetUnfolder]: For 4106/4227 co-relation queries the response was YES. [2021-10-28 09:16:19,561 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. [2021-10-28 09:16:19,591 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 41 selfloop transitions, 38 changer transitions 0/273 dead transitions. [2021-10-28 09:16:19,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 273 transitions, 1360 flow [2021-10-28 09:16:19,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:16:19,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-28 09:16:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1143 transitions. [2021-10-28 09:16:19,597 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9173354735152488 [2021-10-28 09:16:19,597 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1143 transitions. [2021-10-28 09:16:19,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1143 transitions. [2021-10-28 09:16:19,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:19,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1143 transitions. [2021-10-28 09:16:19,603 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) [2021-10-28 09:16:19,607 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) [2021-10-28 09:16:19,609 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) [2021-10-28 09:16:19,609 INFO L186 Difference]: Start difference. First operand has 206 places, 233 transitions, 990 flow. Second operand 7 states and 1143 transitions. [2021-10-28 09:16:19,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 273 transitions, 1360 flow [2021-10-28 09:16:19,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 273 transitions, 1359 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-28 09:16:19,655 INFO L242 Difference]: Finished difference. Result has 216 places, 252 transitions, 1284 flow [2021-10-28 09:16:19,656 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} [2021-10-28 09:16:19,656 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 60 predicate places. [2021-10-28 09:16:19,656 INFO L470 AbstractCegarLoop]: Abstraction has has 216 places, 252 transitions, 1284 flow [2021-10-28 09:16:19,657 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) [2021-10-28 09:16:19,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:19,658 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] [2021-10-28 09:16:19,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:16:19,658 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:19,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:19,659 INFO L85 PathProgramCache]: Analyzing trace with hash -369567993, now seen corresponding path program 1 times [2021-10-28 09:16:19,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:19,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659797159] [2021-10-28 09:16:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:19,660 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:19,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:19,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:19,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:19,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659797159] [2021-10-28 09:16:19,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659797159] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:19,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:19,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:16:19,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269848020] [2021-10-28 09:16:19,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:16:19,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:19,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:16:19,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:16:19,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 178 [2021-10-28 09:16:19,730 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) [2021-10-28 09:16:19,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:19,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 178 [2021-10-28 09:16:19,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:20,554 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))]) [2021-10-28 09:16:20,554 INFO L384 tUnfolder$Statistics]: this new event has 88 ancestors and is cut-off event [2021-10-28 09:16:20,555 INFO L387 tUnfolder$Statistics]: existing Event has 83 ancestors and is cut-off event [2021-10-28 09:16:20,555 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2021-10-28 09:16:20,555 INFO L387 tUnfolder$Statistics]: existing Event has 80 ancestors and is cut-off event [2021-10-28 09:16:21,224 INFO L129 PetriNetUnfolder]: 1305/5537 cut-off events. [2021-10-28 09:16:21,224 INFO L130 PetriNetUnfolder]: For 6940/7149 co-relation queries the response was YES. [2021-10-28 09:16:21,312 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. [2021-10-28 09:16:21,348 INFO L132 encePairwiseOnDemand]: 176/178 looper letters, 11 selfloop transitions, 1 changer transitions 0/255 dead transitions. [2021-10-28 09:16:21,349 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 255 transitions, 1314 flow [2021-10-28 09:16:21,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:16:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:16:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2021-10-28 09:16:21,352 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9400749063670412 [2021-10-28 09:16:21,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2021-10-28 09:16:21,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2021-10-28 09:16:21,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:21,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2021-10-28 09:16:21,355 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) [2021-10-28 09:16:21,357 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) [2021-10-28 09:16:21,358 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) [2021-10-28 09:16:21,358 INFO L186 Difference]: Start difference. First operand has 216 places, 252 transitions, 1284 flow. Second operand 3 states and 502 transitions. [2021-10-28 09:16:21,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 255 transitions, 1314 flow [2021-10-28 09:16:21,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 255 transitions, 1286 flow, removed 14 selfloop flow, removed 0 redundant places. [2021-10-28 09:16:21,434 INFO L242 Difference]: Finished difference. Result has 219 places, 252 transitions, 1261 flow [2021-10-28 09:16:21,436 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} [2021-10-28 09:16:21,436 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 63 predicate places. [2021-10-28 09:16:21,436 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 252 transitions, 1261 flow [2021-10-28 09:16:21,437 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) [2021-10-28 09:16:21,437 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:21,437 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] [2021-10-28 09:16:21,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:16:21,439 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:21,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1025574009, now seen corresponding path program 1 times [2021-10-28 09:16:21,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:21,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261176712] [2021-10-28 09:16:21,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:21,442 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:21,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:21,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:21,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261176712] [2021-10-28 09:16:21,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261176712] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:21,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:21,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:16:21,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825705332] [2021-10-28 09:16:21,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:16:21,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:16:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:16:21,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 178 [2021-10-28 09:16:21,548 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) [2021-10-28 09:16:21,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:21,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 178 [2021-10-28 09:16:21,548 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:22,429 INFO L129 PetriNetUnfolder]: 749/3450 cut-off events. [2021-10-28 09:16:22,429 INFO L130 PetriNetUnfolder]: For 4184/4321 co-relation queries the response was YES. [2021-10-28 09:16:22,472 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. [2021-10-28 09:16:22,488 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 6 selfloop transitions, 2 changer transitions 0/232 dead transitions. [2021-10-28 09:16:22,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 232 transitions, 1155 flow [2021-10-28 09:16:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:16:22,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-28 09:16:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2021-10-28 09:16:22,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9325842696629213 [2021-10-28 09:16:22,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2021-10-28 09:16:22,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2021-10-28 09:16:22,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:22,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2021-10-28 09:16:22,494 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) [2021-10-28 09:16:22,496 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) [2021-10-28 09:16:22,496 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) [2021-10-28 09:16:22,496 INFO L186 Difference]: Start difference. First operand has 219 places, 252 transitions, 1261 flow. Second operand 3 states and 498 transitions. [2021-10-28 09:16:22,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 232 transitions, 1155 flow [2021-10-28 09:16:22,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 232 transitions, 1149 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-10-28 09:16:22,540 INFO L242 Difference]: Finished difference. Result has 209 places, 230 transitions, 1133 flow [2021-10-28 09:16:22,540 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} [2021-10-28 09:16:22,541 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 53 predicate places. [2021-10-28 09:16:22,541 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 230 transitions, 1133 flow [2021-10-28 09:16:22,541 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) [2021-10-28 09:16:22,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:22,541 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] [2021-10-28 09:16:22,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:16:22,542 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:22,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:22,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1834310867, now seen corresponding path program 1 times [2021-10-28 09:16:22,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:22,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200498138] [2021-10-28 09:16:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:22,543 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:22,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:22,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:22,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200498138] [2021-10-28 09:16:22,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200498138] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:22,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:22,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:16:22,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388469415] [2021-10-28 09:16:22,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:16:22,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:22,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:16:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:16:22,768 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-28 09:16:22,770 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) [2021-10-28 09:16:22,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:22,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-28 09:16:22,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:24,702 INFO L129 PetriNetUnfolder]: 2393/6663 cut-off events. [2021-10-28 09:16:24,702 INFO L130 PetriNetUnfolder]: For 13361/13533 co-relation queries the response was YES. [2021-10-28 09:16:24,771 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. [2021-10-28 09:16:24,785 INFO L132 encePairwiseOnDemand]: 161/178 looper letters, 110 selfloop transitions, 49 changer transitions 152/427 dead transitions. [2021-10-28 09:16:24,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 427 transitions, 3037 flow [2021-10-28 09:16:24,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:16:24,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-28 09:16:24,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2115 transitions. [2021-10-28 09:16:24,794 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7921348314606742 [2021-10-28 09:16:24,794 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2115 transitions. [2021-10-28 09:16:24,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2115 transitions. [2021-10-28 09:16:24,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:24,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2115 transitions. [2021-10-28 09:16:24,805 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) [2021-10-28 09:16:24,813 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) [2021-10-28 09:16:24,815 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) [2021-10-28 09:16:24,815 INFO L186 Difference]: Start difference. First operand has 209 places, 230 transitions, 1133 flow. Second operand 15 states and 2115 transitions. [2021-10-28 09:16:24,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 427 transitions, 3037 flow [2021-10-28 09:16:24,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 427 transitions, 3031 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-28 09:16:24,931 INFO L242 Difference]: Finished difference. Result has 228 places, 212 transitions, 1272 flow [2021-10-28 09:16:24,932 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} [2021-10-28 09:16:24,932 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 72 predicate places. [2021-10-28 09:16:24,932 INFO L470 AbstractCegarLoop]: Abstraction has has 228 places, 212 transitions, 1272 flow [2021-10-28 09:16:24,933 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) [2021-10-28 09:16:24,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:24,934 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] [2021-10-28 09:16:24,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:16:24,934 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:24,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1069995329, now seen corresponding path program 1 times [2021-10-28 09:16:24,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:24,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50951255] [2021-10-28 09:16:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:24,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:25,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:25,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50951255] [2021-10-28 09:16:25,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50951255] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:25,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:25,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:16:25,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714641881] [2021-10-28 09:16:25,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:16:25,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:25,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:16:25,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:16:25,242 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-28 09:16:25,245 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) [2021-10-28 09:16:25,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:25,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-28 09:16:25,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:26,841 INFO L129 PetriNetUnfolder]: 1796/5142 cut-off events. [2021-10-28 09:16:26,841 INFO L130 PetriNetUnfolder]: For 18935/19121 co-relation queries the response was YES. [2021-10-28 09:16:26,883 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. [2021-10-28 09:16:26,899 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 127 selfloop transitions, 71 changer transitions 47/361 dead transitions. [2021-10-28 09:16:26,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 361 transitions, 2992 flow [2021-10-28 09:16:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-28 09:16:26,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-28 09:16:26,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2334 transitions. [2021-10-28 09:16:26,908 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7713152676801057 [2021-10-28 09:16:26,908 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2334 transitions. [2021-10-28 09:16:26,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2334 transitions. [2021-10-28 09:16:26,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:26,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2334 transitions. [2021-10-28 09:16:26,919 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) [2021-10-28 09:16:26,928 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) [2021-10-28 09:16:26,930 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) [2021-10-28 09:16:26,931 INFO L186 Difference]: Start difference. First operand has 228 places, 212 transitions, 1272 flow. Second operand 17 states and 2334 transitions. [2021-10-28 09:16:26,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 361 transitions, 2992 flow [2021-10-28 09:16:27,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 361 transitions, 2870 flow, removed 52 selfloop flow, removed 10 redundant places. [2021-10-28 09:16:27,065 INFO L242 Difference]: Finished difference. Result has 227 places, 249 transitions, 1917 flow [2021-10-28 09:16:27,065 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} [2021-10-28 09:16:27,066 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 71 predicate places. [2021-10-28 09:16:27,066 INFO L470 AbstractCegarLoop]: Abstraction has has 227 places, 249 transitions, 1917 flow [2021-10-28 09:16:27,076 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) [2021-10-28 09:16:27,076 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:27,077 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] [2021-10-28 09:16:27,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:16:27,077 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:27,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1416201567, now seen corresponding path program 2 times [2021-10-28 09:16:27,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:27,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148949168] [2021-10-28 09:16:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:27,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:27,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:27,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148949168] [2021-10-28 09:16:27,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148949168] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:27,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:27,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:16:27,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360868152] [2021-10-28 09:16:27,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:16:27,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:27,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:16:27,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:16:27,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-28 09:16:27,339 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) [2021-10-28 09:16:27,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:27,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-28 09:16:27,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:28,791 INFO L129 PetriNetUnfolder]: 1670/5029 cut-off events. [2021-10-28 09:16:28,791 INFO L130 PetriNetUnfolder]: For 27643/27900 co-relation queries the response was YES. [2021-10-28 09:16:28,840 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. [2021-10-28 09:16:28,852 INFO L132 encePairwiseOnDemand]: 161/178 looper letters, 141 selfloop transitions, 73 changer transitions 33/363 dead transitions. [2021-10-28 09:16:28,852 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 363 transitions, 3330 flow [2021-10-28 09:16:28,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:16:28,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:16:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1686 transitions. [2021-10-28 09:16:28,860 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7893258426966292 [2021-10-28 09:16:28,860 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1686 transitions. [2021-10-28 09:16:28,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1686 transitions. [2021-10-28 09:16:28,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:28,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1686 transitions. [2021-10-28 09:16:28,869 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) [2021-10-28 09:16:28,875 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) [2021-10-28 09:16:28,876 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) [2021-10-28 09:16:28,877 INFO L186 Difference]: Start difference. First operand has 227 places, 249 transitions, 1917 flow. Second operand 12 states and 1686 transitions. [2021-10-28 09:16:28,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 363 transitions, 3330 flow [2021-10-28 09:16:29,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 363 transitions, 3278 flow, removed 9 selfloop flow, removed 4 redundant places. [2021-10-28 09:16:29,077 INFO L242 Difference]: Finished difference. Result has 238 places, 258 transitions, 2231 flow [2021-10-28 09:16:29,078 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} [2021-10-28 09:16:29,079 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 82 predicate places. [2021-10-28 09:16:29,079 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 258 transitions, 2231 flow [2021-10-28 09:16:29,080 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) [2021-10-28 09:16:29,080 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:29,080 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] [2021-10-28 09:16:29,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 09:16:29,081 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:29,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:29,081 INFO L85 PathProgramCache]: Analyzing trace with hash -237587885, now seen corresponding path program 2 times [2021-10-28 09:16:29,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:29,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279679518] [2021-10-28 09:16:29,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:29,082 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:29,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:29,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279679518] [2021-10-28 09:16:29,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279679518] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:29,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:29,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:16:29,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436906233] [2021-10-28 09:16:29,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:16:29,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:29,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:16:29,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:16:29,393 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-28 09:16:29,395 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) [2021-10-28 09:16:29,396 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:29,396 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-28 09:16:29,396 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:30,933 INFO L129 PetriNetUnfolder]: 1621/5001 cut-off events. [2021-10-28 09:16:30,933 INFO L130 PetriNetUnfolder]: For 33137/33403 co-relation queries the response was YES. [2021-10-28 09:16:30,980 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. [2021-10-28 09:16:30,990 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 137 selfloop transitions, 79 changer transitions 47/379 dead transitions. [2021-10-28 09:16:30,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 379 transitions, 3784 flow [2021-10-28 09:16:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:16:31,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 09:16:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2213 transitions. [2021-10-28 09:16:31,006 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7770365168539326 [2021-10-28 09:16:31,006 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2213 transitions. [2021-10-28 09:16:31,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2213 transitions. [2021-10-28 09:16:31,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:31,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2213 transitions. [2021-10-28 09:16:31,018 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) [2021-10-28 09:16:31,026 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) [2021-10-28 09:16:31,027 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) [2021-10-28 09:16:31,028 INFO L186 Difference]: Start difference. First operand has 238 places, 258 transitions, 2231 flow. Second operand 16 states and 2213 transitions. [2021-10-28 09:16:31,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 379 transitions, 3784 flow [2021-10-28 09:16:31,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 379 transitions, 3676 flow, removed 32 selfloop flow, removed 5 redundant places. [2021-10-28 09:16:31,343 INFO L242 Difference]: Finished difference. Result has 253 places, 262 transitions, 2435 flow [2021-10-28 09:16:31,343 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} [2021-10-28 09:16:31,344 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 97 predicate places. [2021-10-28 09:16:31,344 INFO L470 AbstractCegarLoop]: Abstraction has has 253 places, 262 transitions, 2435 flow [2021-10-28 09:16:31,345 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) [2021-10-28 09:16:31,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:31,345 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] [2021-10-28 09:16:31,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 09:16:31,345 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:31,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:31,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1173561301, now seen corresponding path program 3 times [2021-10-28 09:16:31,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:31,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838164276] [2021-10-28 09:16:31,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:31,347 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:31,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:31,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838164276] [2021-10-28 09:16:31,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838164276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:31,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:31,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:16:31,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460774176] [2021-10-28 09:16:31,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:16:31,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:31,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:16:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:16:31,523 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-28 09:16:31,525 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) [2021-10-28 09:16:31,525 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:31,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-28 09:16:31,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:33,240 INFO L129 PetriNetUnfolder]: 1572/4914 cut-off events. [2021-10-28 09:16:33,241 INFO L130 PetriNetUnfolder]: For 39567/39837 co-relation queries the response was YES. [2021-10-28 09:16:33,303 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. [2021-10-28 09:16:33,315 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 123 selfloop transitions, 87 changer transitions 51/377 dead transitions. [2021-10-28 09:16:33,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 377 transitions, 4010 flow [2021-10-28 09:16:33,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:16:33,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:16:33,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2464 transitions. [2021-10-28 09:16:33,322 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7690387016229713 [2021-10-28 09:16:33,322 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2464 transitions. [2021-10-28 09:16:33,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2464 transitions. [2021-10-28 09:16:33,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:33,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2464 transitions. [2021-10-28 09:16:33,331 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) [2021-10-28 09:16:33,339 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) [2021-10-28 09:16:33,341 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) [2021-10-28 09:16:33,341 INFO L186 Difference]: Start difference. First operand has 253 places, 262 transitions, 2435 flow. Second operand 18 states and 2464 transitions. [2021-10-28 09:16:33,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 377 transitions, 4010 flow [2021-10-28 09:16:33,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 377 transitions, 3892 flow, removed 25 selfloop flow, removed 7 redundant places. [2021-10-28 09:16:33,634 INFO L242 Difference]: Finished difference. Result has 269 places, 269 transitions, 2723 flow [2021-10-28 09:16:33,635 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} [2021-10-28 09:16:33,636 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 113 predicate places. [2021-10-28 09:16:33,636 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 269 transitions, 2723 flow [2021-10-28 09:16:33,637 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) [2021-10-28 09:16:33,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:33,637 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] [2021-10-28 09:16:33,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 09:16:33,637 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:33,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:33,638 INFO L85 PathProgramCache]: Analyzing trace with hash 940718135, now seen corresponding path program 1 times [2021-10-28 09:16:33,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:33,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850782550] [2021-10-28 09:16:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:33,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:33,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:33,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850782550] [2021-10-28 09:16:33,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850782550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:33,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:33,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:16:33,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099003561] [2021-10-28 09:16:33,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:16:33,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:33,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:16:33,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:16:33,852 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-28 09:16:33,854 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) [2021-10-28 09:16:33,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:33,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-28 09:16:33,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:35,741 INFO L129 PetriNetUnfolder]: 1529/4808 cut-off events. [2021-10-28 09:16:35,741 INFO L130 PetriNetUnfolder]: For 47273/47705 co-relation queries the response was YES. [2021-10-28 09:16:35,789 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. [2021-10-28 09:16:35,799 INFO L132 encePairwiseOnDemand]: 161/178 looper letters, 160 selfloop transitions, 69 changer transitions 48/393 dead transitions. [2021-10-28 09:16:35,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 393 transitions, 4652 flow [2021-10-28 09:16:35,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:16:35,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:16:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1686 transitions. [2021-10-28 09:16:35,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7893258426966292 [2021-10-28 09:16:35,804 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1686 transitions. [2021-10-28 09:16:35,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1686 transitions. [2021-10-28 09:16:35,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:35,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1686 transitions. [2021-10-28 09:16:35,809 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) [2021-10-28 09:16:35,814 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) [2021-10-28 09:16:35,815 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) [2021-10-28 09:16:35,815 INFO L186 Difference]: Start difference. First operand has 269 places, 269 transitions, 2723 flow. Second operand 12 states and 1686 transitions. [2021-10-28 09:16:35,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 393 transitions, 4652 flow [2021-10-28 09:16:36,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 393 transitions, 4478 flow, removed 34 selfloop flow, removed 9 redundant places. [2021-10-28 09:16:36,060 INFO L242 Difference]: Finished difference. Result has 276 places, 286 transitions, 3098 flow [2021-10-28 09:16:36,061 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} [2021-10-28 09:16:36,061 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 120 predicate places. [2021-10-28 09:16:36,061 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 286 transitions, 3098 flow [2021-10-28 09:16:36,062 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) [2021-10-28 09:16:36,062 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:36,062 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] [2021-10-28 09:16:36,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 09:16:36,063 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:36,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:36,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2077575969, now seen corresponding path program 1 times [2021-10-28 09:16:36,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:36,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511300796] [2021-10-28 09:16:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:36,064 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:36,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:36,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511300796] [2021-10-28 09:16:36,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511300796] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:36,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:36,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:16:36,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269777182] [2021-10-28 09:16:36,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:16:36,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:36,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:16:36,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:16:36,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-28 09:16:36,240 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) [2021-10-28 09:16:36,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:36,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-28 09:16:36,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:37,936 INFO L129 PetriNetUnfolder]: 1429/4529 cut-off events. [2021-10-28 09:16:37,936 INFO L130 PetriNetUnfolder]: For 52379/52796 co-relation queries the response was YES. [2021-10-28 09:16:37,995 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. [2021-10-28 09:16:38,006 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 140 selfloop transitions, 86 changer transitions 53/395 dead transitions. [2021-10-28 09:16:38,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 395 transitions, 4785 flow [2021-10-28 09:16:38,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:16:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-28 09:16:38,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2207 transitions. [2021-10-28 09:16:38,012 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7749297752808989 [2021-10-28 09:16:38,012 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2207 transitions. [2021-10-28 09:16:38,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2207 transitions. [2021-10-28 09:16:38,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:38,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2207 transitions. [2021-10-28 09:16:38,019 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) [2021-10-28 09:16:38,024 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) [2021-10-28 09:16:38,026 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) [2021-10-28 09:16:38,026 INFO L186 Difference]: Start difference. First operand has 276 places, 286 transitions, 3098 flow. Second operand 16 states and 2207 transitions. [2021-10-28 09:16:38,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 395 transitions, 4785 flow [2021-10-28 09:16:38,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 395 transitions, 4619 flow, removed 37 selfloop flow, removed 5 redundant places. [2021-10-28 09:16:38,487 INFO L242 Difference]: Finished difference. Result has 291 places, 288 transitions, 3201 flow [2021-10-28 09:16:38,488 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} [2021-10-28 09:16:38,488 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 135 predicate places. [2021-10-28 09:16:38,488 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 288 transitions, 3201 flow [2021-10-28 09:16:38,489 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) [2021-10-28 09:16:38,489 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:38,490 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] [2021-10-28 09:16:38,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 09:16:38,490 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:38,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:38,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2103163063, now seen corresponding path program 2 times [2021-10-28 09:16:38,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:38,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498597162] [2021-10-28 09:16:38,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:38,491 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:38,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:38,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:38,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498597162] [2021-10-28 09:16:38,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498597162] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:38,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:38,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:16:38,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227261866] [2021-10-28 09:16:38,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:16:38,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:16:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:16:38,704 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-28 09:16:38,706 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) [2021-10-28 09:16:38,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:38,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-28 09:16:38,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:40,466 INFO L129 PetriNetUnfolder]: 1401/4537 cut-off events. [2021-10-28 09:16:40,466 INFO L130 PetriNetUnfolder]: For 60459/60910 co-relation queries the response was YES. [2021-10-28 09:16:40,524 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. [2021-10-28 09:16:40,534 INFO L132 encePairwiseOnDemand]: 162/178 looper letters, 145 selfloop transitions, 78 changer transitions 43/382 dead transitions. [2021-10-28 09:16:40,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 382 transitions, 4793 flow [2021-10-28 09:16:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:16:40,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:16:40,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1677 transitions. [2021-10-28 09:16:40,538 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7851123595505618 [2021-10-28 09:16:40,539 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1677 transitions. [2021-10-28 09:16:40,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1677 transitions. [2021-10-28 09:16:40,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:40,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1677 transitions. [2021-10-28 09:16:40,543 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) [2021-10-28 09:16:40,547 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) [2021-10-28 09:16:40,549 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) [2021-10-28 09:16:40,549 INFO L186 Difference]: Start difference. First operand has 291 places, 288 transitions, 3201 flow. Second operand 12 states and 1677 transitions. [2021-10-28 09:16:40,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 382 transitions, 4793 flow [2021-10-28 09:16:40,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 382 transitions, 4583 flow, removed 23 selfloop flow, removed 9 redundant places. [2021-10-28 09:16:40,913 INFO L242 Difference]: Finished difference. Result has 295 places, 290 transitions, 3325 flow [2021-10-28 09:16:40,914 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} [2021-10-28 09:16:40,914 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 139 predicate places. [2021-10-28 09:16:40,914 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 290 transitions, 3325 flow [2021-10-28 09:16:40,915 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) [2021-10-28 09:16:40,915 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:40,916 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] [2021-10-28 09:16:40,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 09:16:40,916 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:40,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:40,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2041973085, now seen corresponding path program 2 times [2021-10-28 09:16:40,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:40,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186640251] [2021-10-28 09:16:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:40,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:41,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:41,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:41,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186640251] [2021-10-28 09:16:41,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186640251] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:41,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:41,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:16:41,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676860856] [2021-10-28 09:16:41,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:16:41,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:41,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:16:41,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:16:41,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 178 [2021-10-28 09:16:41,111 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) [2021-10-28 09:16:41,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:41,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 178 [2021-10-28 09:16:41,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:42,469 INFO L129 PetriNetUnfolder]: 1057/3456 cut-off events. [2021-10-28 09:16:42,469 INFO L130 PetriNetUnfolder]: For 46594/46899 co-relation queries the response was YES. [2021-10-28 09:16:42,506 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. [2021-10-28 09:16:42,516 INFO L132 encePairwiseOnDemand]: 157/178 looper letters, 126 selfloop transitions, 97 changer transitions 27/361 dead transitions. [2021-10-28 09:16:42,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 361 transitions, 4512 flow [2021-10-28 09:16:42,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:16:42,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-10-28 09:16:42,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2426 transitions. [2021-10-28 09:16:42,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7571785268414482 [2021-10-28 09:16:42,521 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2426 transitions. [2021-10-28 09:16:42,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2426 transitions. [2021-10-28 09:16:42,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:42,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2426 transitions. [2021-10-28 09:16:42,527 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) [2021-10-28 09:16:42,531 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) [2021-10-28 09:16:42,532 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) [2021-10-28 09:16:42,533 INFO L186 Difference]: Start difference. First operand has 295 places, 290 transitions, 3325 flow. Second operand 18 states and 2426 transitions. [2021-10-28 09:16:42,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 361 transitions, 4512 flow [2021-10-28 09:16:42,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 361 transitions, 4372 flow, removed 29 selfloop flow, removed 7 redundant places. [2021-10-28 09:16:42,749 INFO L242 Difference]: Finished difference. Result has 308 places, 281 transitions, 3394 flow [2021-10-28 09:16:42,749 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} [2021-10-28 09:16:42,749 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 152 predicate places. [2021-10-28 09:16:42,749 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 281 transitions, 3394 flow [2021-10-28 09:16:42,750 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) [2021-10-28 09:16:42,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:42,750 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] [2021-10-28 09:16:42,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 09:16:42,751 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:42,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:42,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1276402094, now seen corresponding path program 1 times [2021-10-28 09:16:42,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:42,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661204077] [2021-10-28 09:16:42,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:42,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:42,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:42,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661204077] [2021-10-28 09:16:42,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661204077] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:42,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:42,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:16:42,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427780362] [2021-10-28 09:16:42,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:16:42,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:42,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:16:42,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:16:42,858 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-28 09:16:42,860 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) [2021-10-28 09:16:42,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:42,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-28 09:16:42,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:43,874 INFO L129 PetriNetUnfolder]: 653/2634 cut-off events. [2021-10-28 09:16:43,874 INFO L130 PetriNetUnfolder]: For 30307/30422 co-relation queries the response was YES. [2021-10-28 09:16:43,909 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. [2021-10-28 09:16:43,915 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 83 selfloop transitions, 37 changer transitions 69/340 dead transitions. [2021-10-28 09:16:43,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 340 transitions, 4270 flow [2021-10-28 09:16:43,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:16:43,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:16:43,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1665 transitions. [2021-10-28 09:16:43,918 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8503575076608785 [2021-10-28 09:16:43,918 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1665 transitions. [2021-10-28 09:16:43,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1665 transitions. [2021-10-28 09:16:43,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:43,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1665 transitions. [2021-10-28 09:16:43,922 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) [2021-10-28 09:16:43,924 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) [2021-10-28 09:16:43,925 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) [2021-10-28 09:16:43,925 INFO L186 Difference]: Start difference. First operand has 308 places, 281 transitions, 3394 flow. Second operand 11 states and 1665 transitions. [2021-10-28 09:16:43,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 340 transitions, 4270 flow [2021-10-28 09:16:44,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 340 transitions, 3898 flow, removed 16 selfloop flow, removed 20 redundant places. [2021-10-28 09:16:44,055 INFO L242 Difference]: Finished difference. Result has 295 places, 237 transitions, 2338 flow [2021-10-28 09:16:44,055 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} [2021-10-28 09:16:44,055 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 139 predicate places. [2021-10-28 09:16:44,056 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 237 transitions, 2338 flow [2021-10-28 09:16:44,056 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) [2021-10-28 09:16:44,056 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:44,056 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] [2021-10-28 09:16:44,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 09:16:44,057 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:44,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:44,057 INFO L85 PathProgramCache]: Analyzing trace with hash 2080659718, now seen corresponding path program 2 times [2021-10-28 09:16:44,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:44,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741397636] [2021-10-28 09:16:44,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:44,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:44,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:44,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741397636] [2021-10-28 09:16:44,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741397636] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:44,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:44,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:16:44,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443627263] [2021-10-28 09:16:44,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:16:44,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:44,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:16:44,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:16:44,173 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-28 09:16:44,175 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) [2021-10-28 09:16:44,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:44,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-28 09:16:44,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:44,820 INFO L129 PetriNetUnfolder]: 563/2236 cut-off events. [2021-10-28 09:16:44,820 INFO L130 PetriNetUnfolder]: For 19999/20093 co-relation queries the response was YES. [2021-10-28 09:16:44,847 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. [2021-10-28 09:16:44,853 INFO L132 encePairwiseOnDemand]: 166/178 looper letters, 85 selfloop transitions, 45 changer transitions 25/306 dead transitions. [2021-10-28 09:16:44,853 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 306 transitions, 3365 flow [2021-10-28 09:16:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:16:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:16:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1810 transitions. [2021-10-28 09:16:44,855 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8473782771535581 [2021-10-28 09:16:44,856 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1810 transitions. [2021-10-28 09:16:44,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1810 transitions. [2021-10-28 09:16:44,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:44,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1810 transitions. [2021-10-28 09:16:44,859 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) [2021-10-28 09:16:44,863 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) [2021-10-28 09:16:44,863 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) [2021-10-28 09:16:44,863 INFO L186 Difference]: Start difference. First operand has 295 places, 237 transitions, 2338 flow. Second operand 12 states and 1810 transitions. [2021-10-28 09:16:44,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 306 transitions, 3365 flow [2021-10-28 09:16:44,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 306 transitions, 2911 flow, removed 49 selfloop flow, removed 32 redundant places. [2021-10-28 09:16:44,949 INFO L242 Difference]: Finished difference. Result has 278 places, 249 transitions, 2265 flow [2021-10-28 09:16:44,950 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} [2021-10-28 09:16:44,950 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 122 predicate places. [2021-10-28 09:16:44,950 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 249 transitions, 2265 flow [2021-10-28 09:16:44,951 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) [2021-10-28 09:16:44,951 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:44,951 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] [2021-10-28 09:16:44,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 09:16:44,952 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:44,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash 281173362, now seen corresponding path program 3 times [2021-10-28 09:16:44,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:44,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207851058] [2021-10-28 09:16:44,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:44,953 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:45,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:45,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207851058] [2021-10-28 09:16:45,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207851058] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:45,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:45,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:16:45,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449077828] [2021-10-28 09:16:45,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:16:45,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:45,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:16:45,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:16:45,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-28 09:16:45,072 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) [2021-10-28 09:16:45,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:45,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-28 09:16:45,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:45,832 INFO L129 PetriNetUnfolder]: 601/2364 cut-off events. [2021-10-28 09:16:45,833 INFO L130 PetriNetUnfolder]: For 17706/17961 co-relation queries the response was YES. [2021-10-28 09:16:45,866 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. [2021-10-28 09:16:45,872 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 81 selfloop transitions, 52 changer transitions 36/320 dead transitions. [2021-10-28 09:16:45,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 320 transitions, 3319 flow [2021-10-28 09:16:45,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:16:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:16:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1813 transitions. [2021-10-28 09:16:45,875 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8487827715355806 [2021-10-28 09:16:45,876 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1813 transitions. [2021-10-28 09:16:45,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1813 transitions. [2021-10-28 09:16:45,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:45,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1813 transitions. [2021-10-28 09:16:45,878 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) [2021-10-28 09:16:45,882 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) [2021-10-28 09:16:45,883 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) [2021-10-28 09:16:45,883 INFO L186 Difference]: Start difference. First operand has 278 places, 249 transitions, 2265 flow. Second operand 12 states and 1813 transitions. [2021-10-28 09:16:45,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 320 transitions, 3319 flow [2021-10-28 09:16:45,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 320 transitions, 3243 flow, removed 26 selfloop flow, removed 3 redundant places. [2021-10-28 09:16:45,973 INFO L242 Difference]: Finished difference. Result has 291 places, 255 transitions, 2447 flow [2021-10-28 09:16:45,974 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} [2021-10-28 09:16:45,974 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 135 predicate places. [2021-10-28 09:16:45,974 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 255 transitions, 2447 flow [2021-10-28 09:16:45,975 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) [2021-10-28 09:16:45,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:45,975 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] [2021-10-28 09:16:45,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 09:16:45,976 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash -298605370, now seen corresponding path program 4 times [2021-10-28 09:16:45,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:45,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453990142] [2021-10-28 09:16:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:45,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:46,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:46,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453990142] [2021-10-28 09:16:46,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453990142] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:46,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:46,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:16:46,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452212883] [2021-10-28 09:16:46,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:16:46,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:46,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:16:46,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:16:46,034 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 178 [2021-10-28 09:16:46,035 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) [2021-10-28 09:16:46,035 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:46,035 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 178 [2021-10-28 09:16:46,035 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:46,486 INFO L129 PetriNetUnfolder]: 411/2248 cut-off events. [2021-10-28 09:16:46,486 INFO L130 PetriNetUnfolder]: For 17817/18297 co-relation queries the response was YES. [2021-10-28 09:16:46,510 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. [2021-10-28 09:16:46,516 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 51 selfloop transitions, 10 changer transitions 1/266 dead transitions. [2021-10-28 09:16:46,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 266 transitions, 2696 flow [2021-10-28 09:16:46,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:16:46,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-28 09:16:46,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 654 transitions. [2021-10-28 09:16:46,518 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9185393258426966 [2021-10-28 09:16:46,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 654 transitions. [2021-10-28 09:16:46,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 654 transitions. [2021-10-28 09:16:46,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:46,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 654 transitions. [2021-10-28 09:16:46,520 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) [2021-10-28 09:16:46,522 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) [2021-10-28 09:16:46,522 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) [2021-10-28 09:16:46,522 INFO L186 Difference]: Start difference. First operand has 291 places, 255 transitions, 2447 flow. Second operand 4 states and 654 transitions. [2021-10-28 09:16:46,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 266 transitions, 2696 flow [2021-10-28 09:16:46,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 266 transitions, 2558 flow, removed 20 selfloop flow, removed 8 redundant places. [2021-10-28 09:16:46,590 INFO L242 Difference]: Finished difference. Result has 288 places, 256 transitions, 2371 flow [2021-10-28 09:16:46,591 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} [2021-10-28 09:16:46,592 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 132 predicate places. [2021-10-28 09:16:46,592 INFO L470 AbstractCegarLoop]: Abstraction has has 288 places, 256 transitions, 2371 flow [2021-10-28 09:16:46,592 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) [2021-10-28 09:16:46,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:46,593 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] [2021-10-28 09:16:46,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 09:16:46,593 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:46,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:46,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1484179858, now seen corresponding path program 5 times [2021-10-28 09:16:46,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:46,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304298266] [2021-10-28 09:16:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:46,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:46,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:46,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:46,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304298266] [2021-10-28 09:16:46,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304298266] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:46,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:46,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:16:46,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361085884] [2021-10-28 09:16:46,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:16:46,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:16:46,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:16:46,704 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-28 09:16:46,705 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) [2021-10-28 09:16:46,705 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:46,705 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-28 09:16:46,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:47,581 INFO L129 PetriNetUnfolder]: 575/2450 cut-off events. [2021-10-28 09:16:47,581 INFO L130 PetriNetUnfolder]: For 21866/22313 co-relation queries the response was YES. [2021-10-28 09:16:47,609 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. [2021-10-28 09:16:47,616 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 76 selfloop transitions, 52 changer transitions 47/326 dead transitions. [2021-10-28 09:16:47,616 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 326 transitions, 3546 flow [2021-10-28 09:16:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:16:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-28 09:16:47,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2101 transitions. [2021-10-28 09:16:47,620 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8430979133226324 [2021-10-28 09:16:47,620 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2101 transitions. [2021-10-28 09:16:47,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2101 transitions. [2021-10-28 09:16:47,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:47,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2101 transitions. [2021-10-28 09:16:47,624 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) [2021-10-28 09:16:47,627 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) [2021-10-28 09:16:47,627 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) [2021-10-28 09:16:47,627 INFO L186 Difference]: Start difference. First operand has 288 places, 256 transitions, 2371 flow. Second operand 14 states and 2101 transitions. [2021-10-28 09:16:47,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 326 transitions, 3546 flow [2021-10-28 09:16:47,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 326 transitions, 3462 flow, removed 33 selfloop flow, removed 4 redundant places. [2021-10-28 09:16:47,702 INFO L242 Difference]: Finished difference. Result has 303 places, 254 transitions, 2517 flow [2021-10-28 09:16:47,703 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} [2021-10-28 09:16:47,703 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 147 predicate places. [2021-10-28 09:16:47,704 INFO L470 AbstractCegarLoop]: Abstraction has has 303 places, 254 transitions, 2517 flow [2021-10-28 09:16:47,704 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) [2021-10-28 09:16:47,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:47,705 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] [2021-10-28 09:16:47,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 09:16:47,705 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:47,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:47,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1296509942, now seen corresponding path program 1 times [2021-10-28 09:16:47,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:47,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785555607] [2021-10-28 09:16:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:47,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:47,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:47,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:47,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785555607] [2021-10-28 09:16:47,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785555607] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:47,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:47,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:16:47,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611378843] [2021-10-28 09:16:47,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:16:47,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:47,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:16:47,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:16:47,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 178 [2021-10-28 09:16:47,891 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) [2021-10-28 09:16:47,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:47,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 178 [2021-10-28 09:16:47,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:49,538 INFO L129 PetriNetUnfolder]: 724/3153 cut-off events. [2021-10-28 09:16:49,538 INFO L130 PetriNetUnfolder]: For 32343/32745 co-relation queries the response was YES. [2021-10-28 09:16:49,576 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. [2021-10-28 09:16:49,587 INFO L132 encePairwiseOnDemand]: 158/178 looper letters, 144 selfloop transitions, 119 changer transitions 56/427 dead transitions. [2021-10-28 09:16:49,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 427 transitions, 5001 flow [2021-10-28 09:16:49,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-28 09:16:49,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-10-28 09:16:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 5498 transitions. [2021-10-28 09:16:49,596 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7354200107009096 [2021-10-28 09:16:49,597 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 5498 transitions. [2021-10-28 09:16:49,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 5498 transitions. [2021-10-28 09:16:49,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:49,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 5498 transitions. [2021-10-28 09:16:49,612 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) [2021-10-28 09:16:49,624 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) [2021-10-28 09:16:49,626 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) [2021-10-28 09:16:49,626 INFO L186 Difference]: Start difference. First operand has 303 places, 254 transitions, 2517 flow. Second operand 42 states and 5498 transitions. [2021-10-28 09:16:49,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 427 transitions, 5001 flow [2021-10-28 09:16:49,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 427 transitions, 4755 flow, removed 38 selfloop flow, removed 13 redundant places. [2021-10-28 09:16:49,767 INFO L242 Difference]: Finished difference. Result has 349 places, 291 transitions, 3155 flow [2021-10-28 09:16:49,767 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} [2021-10-28 09:16:49,768 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 193 predicate places. [2021-10-28 09:16:49,768 INFO L470 AbstractCegarLoop]: Abstraction has has 349 places, 291 transitions, 3155 flow [2021-10-28 09:16:49,768 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) [2021-10-28 09:16:49,768 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:49,769 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] [2021-10-28 09:16:49,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 09:16:49,769 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:49,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:49,769 INFO L85 PathProgramCache]: Analyzing trace with hash 372500916, now seen corresponding path program 2 times [2021-10-28 09:16:49,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:49,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986563849] [2021-10-28 09:16:49,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:49,770 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:49,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:49,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986563849] [2021-10-28 09:16:49,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986563849] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:49,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:49,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:16:49,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860834873] [2021-10-28 09:16:49,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:16:49,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:49,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:16:49,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:16:49,929 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 178 [2021-10-28 09:16:49,932 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) [2021-10-28 09:16:49,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:49,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 178 [2021-10-28 09:16:49,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:51,286 INFO L129 PetriNetUnfolder]: 641/2739 cut-off events. [2021-10-28 09:16:51,286 INFO L130 PetriNetUnfolder]: For 30568/30957 co-relation queries the response was YES. [2021-10-28 09:16:51,321 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. [2021-10-28 09:16:51,330 INFO L132 encePairwiseOnDemand]: 160/178 looper letters, 123 selfloop transitions, 104 changer transitions 51/386 dead transitions. [2021-10-28 09:16:51,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 386 transitions, 4729 flow [2021-10-28 09:16:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-28 09:16:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-10-28 09:16:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4574 transitions. [2021-10-28 09:16:51,337 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7341894060995184 [2021-10-28 09:16:51,337 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4574 transitions. [2021-10-28 09:16:51,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4574 transitions. [2021-10-28 09:16:51,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:51,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4574 transitions. [2021-10-28 09:16:51,350 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) [2021-10-28 09:16:51,361 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) [2021-10-28 09:16:51,363 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) [2021-10-28 09:16:51,363 INFO L186 Difference]: Start difference. First operand has 349 places, 291 transitions, 3155 flow. Second operand 35 states and 4574 transitions. [2021-10-28 09:16:51,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 386 transitions, 4729 flow [2021-10-28 09:16:51,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 386 transitions, 4371 flow, removed 94 selfloop flow, removed 23 redundant places. [2021-10-28 09:16:51,535 INFO L242 Difference]: Finished difference. Result has 355 places, 260 transitions, 2553 flow [2021-10-28 09:16:51,536 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} [2021-10-28 09:16:51,536 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 199 predicate places. [2021-10-28 09:16:51,537 INFO L470 AbstractCegarLoop]: Abstraction has has 355 places, 260 transitions, 2553 flow [2021-10-28 09:16:51,537 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) [2021-10-28 09:16:51,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:51,538 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] [2021-10-28 09:16:51,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 09:16:51,538 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:51,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:51,539 INFO L85 PathProgramCache]: Analyzing trace with hash 206605966, now seen corresponding path program 3 times [2021-10-28 09:16:51,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:51,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264392181] [2021-10-28 09:16:51,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:51,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:51,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:51,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264392181] [2021-10-28 09:16:51,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264392181] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:51,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:51,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:16:51,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705690070] [2021-10-28 09:16:51,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:16:51,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:51,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:16:51,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:16:51,653 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-28 09:16:51,655 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) [2021-10-28 09:16:51,655 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:51,655 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-28 09:16:51,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:52,278 INFO L129 PetriNetUnfolder]: 403/2029 cut-off events. [2021-10-28 09:16:52,278 INFO L130 PetriNetUnfolder]: For 15167/15471 co-relation queries the response was YES. [2021-10-28 09:16:52,300 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. [2021-10-28 09:16:52,306 INFO L132 encePairwiseOnDemand]: 166/178 looper letters, 84 selfloop transitions, 55 changer transitions 32/304 dead transitions. [2021-10-28 09:16:52,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 304 transitions, 3469 flow [2021-10-28 09:16:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:16:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-28 09:16:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1496 transitions. [2021-10-28 09:16:52,309 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8404494382022472 [2021-10-28 09:16:52,309 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1496 transitions. [2021-10-28 09:16:52,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1496 transitions. [2021-10-28 09:16:52,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:52,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1496 transitions. [2021-10-28 09:16:52,312 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) [2021-10-28 09:16:52,313 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) [2021-10-28 09:16:52,313 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) [2021-10-28 09:16:52,313 INFO L186 Difference]: Start difference. First operand has 355 places, 260 transitions, 2553 flow. Second operand 10 states and 1496 transitions. [2021-10-28 09:16:52,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 304 transitions, 3469 flow [2021-10-28 09:16:52,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 304 transitions, 2819 flow, removed 10 selfloop flow, removed 64 redundant places. [2021-10-28 09:16:52,373 INFO L242 Difference]: Finished difference. Result has 297 places, 249 transitions, 2113 flow [2021-10-28 09:16:52,373 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} [2021-10-28 09:16:52,374 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 141 predicate places. [2021-10-28 09:16:52,374 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 249 transitions, 2113 flow [2021-10-28 09:16:52,374 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) [2021-10-28 09:16:52,374 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:52,374 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] [2021-10-28 09:16:52,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 09:16:52,374 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:52,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:52,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1472880161, now seen corresponding path program 1 times [2021-10-28 09:16:52,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:52,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100255183] [2021-10-28 09:16:52,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:52,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:52,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:52,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100255183] [2021-10-28 09:16:52,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100255183] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:52,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:52,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:16:52,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002044003] [2021-10-28 09:16:52,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:16:52,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:52,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:16:52,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:16:52,484 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-28 09:16:52,486 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) [2021-10-28 09:16:52,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:52,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-28 09:16:52,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:52,950 INFO L129 PetriNetUnfolder]: 352/1764 cut-off events. [2021-10-28 09:16:52,950 INFO L130 PetriNetUnfolder]: For 11599/11885 co-relation queries the response was YES. [2021-10-28 09:16:52,966 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. [2021-10-28 09:16:52,969 INFO L132 encePairwiseOnDemand]: 168/178 looper letters, 41 selfloop transitions, 24 changer transitions 78/269 dead transitions. [2021-10-28 09:16:52,969 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 269 transitions, 2615 flow [2021-10-28 09:16:52,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:16:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:16:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1333 transitions. [2021-10-28 09:16:52,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8320848938826467 [2021-10-28 09:16:52,971 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1333 transitions. [2021-10-28 09:16:52,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1333 transitions. [2021-10-28 09:16:52,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:52,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1333 transitions. [2021-10-28 09:16:52,974 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) [2021-10-28 09:16:52,975 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) [2021-10-28 09:16:52,975 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) [2021-10-28 09:16:52,975 INFO L186 Difference]: Start difference. First operand has 297 places, 249 transitions, 2113 flow. Second operand 9 states and 1333 transitions. [2021-10-28 09:16:52,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 269 transitions, 2615 flow [2021-10-28 09:16:53,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 269 transitions, 2485 flow, removed 10 selfloop flow, removed 11 redundant places. [2021-10-28 09:16:53,018 INFO L242 Difference]: Finished difference. Result has 289 places, 186 transitions, 1230 flow [2021-10-28 09:16:53,019 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} [2021-10-28 09:16:53,019 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 133 predicate places. [2021-10-28 09:16:53,019 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 186 transitions, 1230 flow [2021-10-28 09:16:53,020 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) [2021-10-28 09:16:53,020 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:53,020 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] [2021-10-28 09:16:53,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 09:16:53,020 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:53,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:53,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1512673458, now seen corresponding path program 4 times [2021-10-28 09:16:53,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:53,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288365315] [2021-10-28 09:16:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:53,022 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:53,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:53,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288365315] [2021-10-28 09:16:53,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288365315] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:53,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:53,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:16:53,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296647016] [2021-10-28 09:16:53,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:16:53,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:16:53,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:16:53,124 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-28 09:16:53,125 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) [2021-10-28 09:16:53,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:53,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-28 09:16:53,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:53,511 INFO L129 PetriNetUnfolder]: 241/1221 cut-off events. [2021-10-28 09:16:53,511 INFO L130 PetriNetUnfolder]: For 6419/6598 co-relation queries the response was YES. [2021-10-28 09:16:53,521 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. [2021-10-28 09:16:53,524 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 49 selfloop transitions, 37 changer transitions 14/217 dead transitions. [2021-10-28 09:16:53,524 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 217 transitions, 1791 flow [2021-10-28 09:16:53,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:16:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-28 09:16:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1621 transitions. [2021-10-28 09:16:53,526 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8278855975485189 [2021-10-28 09:16:53,527 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1621 transitions. [2021-10-28 09:16:53,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1621 transitions. [2021-10-28 09:16:53,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:53,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1621 transitions. [2021-10-28 09:16:53,529 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) [2021-10-28 09:16:53,531 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) [2021-10-28 09:16:53,532 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) [2021-10-28 09:16:53,532 INFO L186 Difference]: Start difference. First operand has 289 places, 186 transitions, 1230 flow. Second operand 11 states and 1621 transitions. [2021-10-28 09:16:53,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 217 transitions, 1791 flow [2021-10-28 09:16:53,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 217 transitions, 1398 flow, removed 14 selfloop flow, removed 48 redundant places. [2021-10-28 09:16:53,562 INFO L242 Difference]: Finished difference. Result has 231 places, 191 transitions, 1119 flow [2021-10-28 09:16:53,563 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} [2021-10-28 09:16:53,563 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 75 predicate places. [2021-10-28 09:16:53,563 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 191 transitions, 1119 flow [2021-10-28 09:16:53,564 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) [2021-10-28 09:16:53,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:53,564 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] [2021-10-28 09:16:53,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-28 09:16:53,564 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:53,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:53,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1125678996, now seen corresponding path program 5 times [2021-10-28 09:16:53,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:53,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576161475] [2021-10-28 09:16:53,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:53,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:53,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:53,618 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:53,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576161475] [2021-10-28 09:16:53,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576161475] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:53,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:53,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:16:53,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118730374] [2021-10-28 09:16:53,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:16:53,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:53,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:16:53,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:16:53,622 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 178 [2021-10-28 09:16:53,623 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) [2021-10-28 09:16:53,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:53,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 178 [2021-10-28 09:16:53,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:53,820 INFO L129 PetriNetUnfolder]: 174/1000 cut-off events. [2021-10-28 09:16:53,820 INFO L130 PetriNetUnfolder]: For 5049/5233 co-relation queries the response was YES. [2021-10-28 09:16:53,827 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. [2021-10-28 09:16:53,829 INFO L132 encePairwiseOnDemand]: 175/178 looper letters, 38 selfloop transitions, 14 changer transitions 0/195 dead transitions. [2021-10-28 09:16:53,829 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 195 transitions, 1304 flow [2021-10-28 09:16:53,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:16:53,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-28 09:16:53,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 651 transitions. [2021-10-28 09:16:53,831 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9143258426966292 [2021-10-28 09:16:53,831 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 651 transitions. [2021-10-28 09:16:53,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 651 transitions. [2021-10-28 09:16:53,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:53,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 651 transitions. [2021-10-28 09:16:53,833 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) [2021-10-28 09:16:53,833 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) [2021-10-28 09:16:53,833 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) [2021-10-28 09:16:53,834 INFO L186 Difference]: Start difference. First operand has 231 places, 191 transitions, 1119 flow. Second operand 4 states and 651 transitions. [2021-10-28 09:16:53,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 195 transitions, 1304 flow [2021-10-28 09:16:53,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 195 transitions, 1137 flow, removed 24 selfloop flow, removed 19 redundant places. [2021-10-28 09:16:53,849 INFO L242 Difference]: Finished difference. Result has 215 places, 189 transitions, 1015 flow [2021-10-28 09:16:53,849 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} [2021-10-28 09:16:53,850 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 59 predicate places. [2021-10-28 09:16:53,850 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 189 transitions, 1015 flow [2021-10-28 09:16:53,850 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) [2021-10-28 09:16:53,850 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:53,850 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] [2021-10-28 09:16:53,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-28 09:16:53,851 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:53,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:53,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1376830462, now seen corresponding path program 6 times [2021-10-28 09:16:53,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:53,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902102744] [2021-10-28 09:16:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:53,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:53,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:53,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:53,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902102744] [2021-10-28 09:16:53,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902102744] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:53,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:53,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:16:53,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193585335] [2021-10-28 09:16:53,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:16:53,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:53,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:16:53,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:16:53,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-28 09:16:53,975 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) [2021-10-28 09:16:53,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:53,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-28 09:16:53,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:54,280 INFO L129 PetriNetUnfolder]: 239/1289 cut-off events. [2021-10-28 09:16:54,280 INFO L130 PetriNetUnfolder]: For 7618/7979 co-relation queries the response was YES. [2021-10-28 09:16:54,289 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. [2021-10-28 09:16:54,293 INFO L132 encePairwiseOnDemand]: 167/178 looper letters, 42 selfloop transitions, 43 changer transitions 21/220 dead transitions. [2021-10-28 09:16:54,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 220 transitions, 1552 flow [2021-10-28 09:16:54,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:16:54,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-28 09:16:54,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1766 transitions. [2021-10-28 09:16:54,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8267790262172284 [2021-10-28 09:16:54,297 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1766 transitions. [2021-10-28 09:16:54,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1766 transitions. [2021-10-28 09:16:54,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:54,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1766 transitions. [2021-10-28 09:16:54,301 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) [2021-10-28 09:16:54,303 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) [2021-10-28 09:16:54,303 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) [2021-10-28 09:16:54,303 INFO L186 Difference]: Start difference. First operand has 215 places, 189 transitions, 1015 flow. Second operand 12 states and 1766 transitions. [2021-10-28 09:16:54,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 220 transitions, 1552 flow [2021-10-28 09:16:54,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 1493 flow, removed 26 selfloop flow, removed 1 redundant places. [2021-10-28 09:16:54,326 INFO L242 Difference]: Finished difference. Result has 229 places, 187 transitions, 1173 flow [2021-10-28 09:16:54,327 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} [2021-10-28 09:16:54,327 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 73 predicate places. [2021-10-28 09:16:54,327 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 187 transitions, 1173 flow [2021-10-28 09:16:54,328 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) [2021-10-28 09:16:54,328 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-28 09:16:54,328 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] [2021-10-28 09:16:54,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-28 09:16:54,328 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION === [qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION, qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION (and 4 more)] === [2021-10-28 09:16:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1780150344, now seen corresponding path program 1 times [2021-10-28 09:16:54,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:54,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733916380] [2021-10-28 09:16:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:54,329 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:54,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:54,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:54,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733916380] [2021-10-28 09:16:54,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733916380] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:54,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:54,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:16:54,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570418733] [2021-10-28 09:16:54,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:16:54,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:54,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:16:54,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:16:54,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 178 [2021-10-28 09:16:54,451 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) [2021-10-28 09:16:54,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-28 09:16:54,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 178 [2021-10-28 09:16:54,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-28 09:16:54,695 INFO L129 PetriNetUnfolder]: 185/971 cut-off events. [2021-10-28 09:16:54,695 INFO L130 PetriNetUnfolder]: For 6523/6938 co-relation queries the response was YES. [2021-10-28 09:16:54,701 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. [2021-10-28 09:16:54,702 INFO L132 encePairwiseOnDemand]: 168/178 looper letters, 0 selfloop transitions, 0 changer transitions 200/200 dead transitions. [2021-10-28 09:16:54,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 200 transitions, 1465 flow [2021-10-28 09:16:54,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:16:54,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-28 09:16:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1322 transitions. [2021-10-28 09:16:54,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8252184769038702 [2021-10-28 09:16:54,705 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1322 transitions. [2021-10-28 09:16:54,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1322 transitions. [2021-10-28 09:16:54,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-28 09:16:54,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1322 transitions. [2021-10-28 09:16:54,707 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) [2021-10-28 09:16:54,708 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) [2021-10-28 09:16:54,708 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) [2021-10-28 09:16:54,708 INFO L186 Difference]: Start difference. First operand has 229 places, 187 transitions, 1173 flow. Second operand 9 states and 1322 transitions. [2021-10-28 09:16:54,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 200 transitions, 1465 flow [2021-10-28 09:16:54,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 200 transitions, 1343 flow, removed 15 selfloop flow, removed 12 redundant places. [2021-10-28 09:16:54,722 INFO L242 Difference]: Finished difference. Result has 219 places, 0 transitions, 0 flow [2021-10-28 09:16:54,723 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} [2021-10-28 09:16:54,723 INFO L334 CegarLoopForPetriNet]: 156 programPoint places, 63 predicate places. [2021-10-28 09:16:54,723 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 0 transitions, 0 flow [2021-10-28 09:16:54,723 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) [2021-10-28 09:16:54,726 INFO L764 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:54,726 INFO L764 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:54,726 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-28 09:16:54,726 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-28 09:16:54,726 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-28 09:16:54,727 INFO L764 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:54,727 INFO L764 garLoopResultBuilder]: Registering result SAFE for location qrcu_updaterErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:54,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-28 09:16:54,730 INFO L731 BasicCegarLoop]: Path program histogram: [6, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:16:54,734 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-28 09:16:54,735 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:16:54,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:16:54 BasicIcfg [2021-10-28 09:16:54,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:16:54,738 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:16:54,738 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:16:54,738 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:16:54,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:10" (3/4) ... [2021-10-28 09:16:54,742 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:16:54,748 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader1 [2021-10-28 09:16:54,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_reader2 [2021-10-28 09:16:54,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure qrcu_updater [2021-10-28 09:16:54,754 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-28 09:16:54,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:16:54,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:16:54,755 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:16:54,802 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:16:54,802 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:16:54,804 INFO L168 Benchmark]: Toolchain (without parser) took 46130.68 ms. Allocated memory was 94.4 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 58.7 MB in the beginning and 5.1 GB in the end (delta: -5.0 GB). Peak memory consumption was 2.7 GB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,805 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 77.6 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:16:54,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.66 ms. Allocated memory is still 94.4 MB. Free memory was 58.5 MB in the beginning and 58.9 MB in the end (delta: -413.5 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,806 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.92 ms. Allocated memory is still 94.4 MB. Free memory was 58.9 MB in the beginning and 56.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,807 INFO L168 Benchmark]: Boogie Preprocessor took 44.07 ms. Allocated memory is still 94.4 MB. Free memory was 56.2 MB in the beginning and 54.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,807 INFO L168 Benchmark]: RCFGBuilder took 1245.36 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 47.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,808 INFO L168 Benchmark]: TraceAbstraction took 43914.92 ms. Allocated memory was 94.4 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 46.9 MB in the beginning and 5.1 GB in the end (delta: -5.0 GB). Peak memory consumption was 2.7 GB. Max. memory is 16.1 GB. [2021-10-28 09:16:54,809 INFO L168 Benchmark]: Witness Printer took 64.63 ms. Allocated memory is still 7.8 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. [2021-10-28 09:16:54,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 77.6 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 28.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 773.66 ms. Allocated memory is still 94.4 MB. Free memory was 58.5 MB in the beginning and 58.9 MB in the end (delta: -413.5 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.92 ms. Allocated memory is still 94.4 MB. Free memory was 58.9 MB in the beginning and 56.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.07 ms. Allocated memory is still 94.4 MB. Free memory was 56.2 MB in the beginning and 54.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1245.36 ms. Allocated memory is still 94.4 MB. Free memory was 54.1 MB in the beginning and 47.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 43914.92 ms. Allocated memory was 94.4 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 46.9 MB in the beginning and 5.1 GB in the end (delta: -5.0 GB). Peak memory consumption was 2.7 GB. Max. memory is 16.1 GB. * Witness Printer took 64.63 ms. Allocated memory is still 7.8 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s 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: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 43.6s, OverallIterations: 33, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 37.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 689 SDtfs, 2788 SDslu, 1651 SDs, 0 SdLazy, 6794 SolverSat, 732 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 470 GetRequests, 70 SyntacticMatches, 5 SemanticMatches, 395 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 3.4s Time, 0.0s 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, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.0s 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! [2021-10-28 09:16:54,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aaa54641-186c-4db4-bb42-236b19dd9cec/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...