/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/BuchiAutomizerCInline.xml -s ../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/qrcu-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-0d686a6 [2022-07-26 13:22:10,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-26 13:22:10,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-26 13:22:10,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-07-26 13:22:10,742 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-noLbe.epf [2022-07-26 13:22:10,767 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-26 13:22:10,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-26 13:22:10,767 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-26 13:22:10,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-26 13:22:10,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-26 13:22:10,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-26 13:22:10,768 INFO L138 SettingsManager]: * Use SBE=true [2022-07-26 13:22:10,768 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-26 13:22:10,769 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-26 13:22:10,769 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-26 13:22:10,769 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-26 13:22:10,769 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-26 13:22:10,769 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-26 13:22:10,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-26 13:22:10,770 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-26 13:22:10,770 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-26 13:22:10,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-26 13:22:10,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-26 13:22:10,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-26 13:22:10,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-26 13:22:10,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-26 13:22:10,772 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-26 13:22:10,773 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-26 13:22:10,773 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-26 13:22:10,967 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-26 13:22:10,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-26 13:22:10,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-26 13:22:10,984 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-26 13:22:10,985 INFO L275 PluginConnector]: CDTParser initialized [2022-07-26 13:22:10,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/qrcu-1.i [2022-07-26 13:22:11,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd466a4ab/b0f2267d215a4968bff14c7849e9daa3/FLAG2eccdff55 [2022-07-26 13:22:11,473 INFO L306 CDTParser]: Found 1 translation units. [2022-07-26 13:22:11,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i [2022-07-26 13:22:11,482 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd466a4ab/b0f2267d215a4968bff14c7849e9daa3/FLAG2eccdff55 [2022-07-26 13:22:11,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd466a4ab/b0f2267d215a4968bff14c7849e9daa3 [2022-07-26 13:22:11,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-26 13:22:11,846 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-26 13:22:11,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-26 13:22:11,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-26 13:22:11,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-26 13:22:11,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:22:11" (1/1) ... [2022-07-26 13:22:11,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c9ad105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:11, skipping insertion in model container [2022-07-26 13:22:11,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.07 01:22:11" (1/1) ... [2022-07-26 13:22:11,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-26 13:22:11,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-26 13:22:12,134 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30694,30707] [2022-07-26 13:22:12,136 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30916,30929] [2022-07-26 13:22:12,157 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:22:12,163 INFO L203 MainTranslator]: Completed pre-run [2022-07-26 13:22:12,197 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30694,30707] [2022-07-26 13:22:12,198 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30916,30929] [2022-07-26 13:22:12,204 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-26 13:22:12,230 INFO L208 MainTranslator]: Completed translation [2022-07-26 13:22:12,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12 WrapperNode [2022-07-26 13:22:12,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-26 13:22:12,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-26 13:22:12,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-26 13:22:12,231 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-26 13:22:12,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,294 INFO L137 Inliner]: procedures = 177, calls = 54, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 262 [2022-07-26 13:22:12,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-26 13:22:12,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-26 13:22:12,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-26 13:22:12,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-26 13:22:12,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-26 13:22:12,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-26 13:22:12,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-26 13:22:12,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-26 13:22:12,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (1/1) ... [2022-07-26 13:22:12,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-26 13:22:12,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-26 13:22:12,373 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-07-26 13:22:12,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-07-26 13:22:12,406 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-07-26 13:22:12,406 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-07-26 13:22:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-07-26 13:22:12,408 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-07-26 13:22:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-26 13:22:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-26 13:22:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-07-26 13:22:12,408 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-07-26 13:22:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-26 13:22:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-26 13:22:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-26 13:22:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-26 13:22:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-26 13:22:12,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-26 13:22:12,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-26 13:22:12,410 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-26 13:22:12,558 INFO L234 CfgBuilder]: Building ICFG [2022-07-26 13:22:12,559 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-26 13:22:12,894 INFO L275 CfgBuilder]: Performing block encoding [2022-07-26 13:22:12,967 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-26 13:22:12,967 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-26 13:22:12,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:22:12 BoogieIcfgContainer [2022-07-26 13:22:12,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-26 13:22:12,969 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-26 13:22:12,970 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-26 13:22:12,972 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-26 13:22:12,973 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:22:12,973 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.07 01:22:11" (1/3) ... [2022-07-26 13:22:12,974 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24144a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:22:12, skipping insertion in model container [2022-07-26 13:22:12,974 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:22:12,974 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.07 01:22:12" (2/3) ... [2022-07-26 13:22:12,974 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@24144a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.07 01:22:12, skipping insertion in model container [2022-07-26 13:22:12,974 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-26 13:22:12,974 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.07 01:22:12" (3/3) ... [2022-07-26 13:22:12,975 INFO L322 chiAutomizerObserver]: Analyzing ICFG qrcu-1.i [2022-07-26 13:22:13,097 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-26 13:22:13,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 167 places, 178 transitions, 380 flow [2022-07-26 13:22:13,188 INFO L129 PetriNetUnfolder]: 18/172 cut-off events. [2022-07-26 13:22:13,188 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-26 13:22:13,192 INFO L84 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 18/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 314 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 126. Up to 4 conditions per place. [2022-07-26 13:22:13,193 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 178 transitions, 380 flow [2022-07-26 13:22:13,199 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 172 transitions, 362 flow [2022-07-26 13:22:13,208 INFO L301 stractBuchiCegarLoop]: Interprodecural is true [2022-07-26 13:22:13,209 INFO L302 stractBuchiCegarLoop]: Hoare is false [2022-07-26 13:22:13,209 INFO L303 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-26 13:22:13,209 INFO L304 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-26 13:22:13,209 INFO L305 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-26 13:22:13,209 INFO L306 stractBuchiCegarLoop]: Difference is false [2022-07-26 13:22:13,209 INFO L307 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-26 13:22:13,209 INFO L311 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-26 13:22:13,210 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-26 13:22:17,743 INFO L131 ngComponentsAnalysis]: Automaton has 7154 accepting balls. 43674 [2022-07-26 13:22:17,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:22:17,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:22:17,751 INFO L150 hiAutomatonCegarLoop]: Counterexample stem 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] [2022-07-26 13:22:17,751 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-07-26 13:22:17,752 INFO L333 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-26 13:22:17,752 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 77863 states, but on-demand construction may add more states [2022-07-26 13:22:19,460 INFO L131 ngComponentsAnalysis]: Automaton has 7154 accepting balls. 43674 [2022-07-26 13:22:19,461 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-26 13:22:19,461 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-26 13:22:19,464 INFO L150 hiAutomatonCegarLoop]: Counterexample stem 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] [2022-07-26 13:22:19,464 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2022-07-26 13:22:19,468 INFO L733 eck$LassoCheckResult]: Stem: 170#[ULTIMATE.startENTRY]don't care [713] ULTIMATE.startENTRY-->L-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 173#[L-1]don't care [616] L-1-->L-1-1: Formula: (and (= |v_#NULL.base_1| 0) (= |v_#NULL.offset_1| 0)) InVars {} OutVars{#NULL.offset=|v_#NULL.offset_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] 175#[L-1-1]don't care [724] L-1-1-->L-1-2: Formula: (= (select |v_#valid_31| 0) 0) InVars {#valid=|v_#valid_31|} OutVars{#valid=|v_#valid_31|} AuxVars[] AssignedVars[] 177#[L-1-2]don't care [726] L-1-2-->L16: Formula: (< 0 |v_#StackHeapBarrier_6|) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_6|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_6|} AuxVars[] AssignedVars[] 179#[L16]don't care [689] L16-->L16-1: Formula: (and (= (select |v_#valid_32| 1) 1) (= 2 (select |v_#length_21| 1))) InVars {#length=|v_#length_21|, #valid=|v_#valid_32|} OutVars{#length=|v_#length_21|, #valid=|v_#valid_32|} AuxVars[] AssignedVars[] 181#[L16-1]don't care [564] L16-1-->L16-2: Formula: (= (select (select |v_#memory_int_18| 1) 0) 48) InVars {#memory_int=|v_#memory_int_18|} OutVars{#memory_int=|v_#memory_int_18|} AuxVars[] AssignedVars[] 183#[L16-2]don't care [731] L16-2-->L16-3: Formula: (= (select (select |v_#memory_int_19| 1) 1) 0) InVars {#memory_int=|v_#memory_int_19|} OutVars{#memory_int=|v_#memory_int_19|} AuxVars[] AssignedVars[] 185#[L16-3]don't care [706] L16-3-->L16-4: Formula: (and (= (select |v_#valid_33| 2) 1) (= 9 (select |v_#length_22| 2))) InVars {#length=|v_#length_22|, #valid=|v_#valid_33|} OutVars{#length=|v_#length_22|, #valid=|v_#valid_33|} AuxVars[] AssignedVars[] 187#[L16-4]don't care [629] L16-4-->L690: Formula: (= v_~idx~0_9 0) InVars {} OutVars{~idx~0=v_~idx~0_9} AuxVars[] AssignedVars[~idx~0] 189#[L690]don't care [642] L690-->L690-1: Formula: (= v_~ctr1~0_21 1) InVars {} OutVars{~ctr1~0=v_~ctr1~0_21} AuxVars[] AssignedVars[~ctr1~0] 191#[L690-1]don't care [572] L690-1-->L691: Formula: (= v_~ctr2~0_21 0) InVars {} OutVars{~ctr2~0=v_~ctr2~0_21} AuxVars[] AssignedVars[~ctr2~0] 193#[L691]don't care [609] L691-->L691-1: Formula: (= v_~readerprogress1~0_5 0) InVars {} OutVars{~readerprogress1~0=v_~readerprogress1~0_5} AuxVars[] AssignedVars[~readerprogress1~0] 195#[L691-1]don't care [734] L691-1-->L692: Formula: (= v_~readerprogress2~0_5 0) InVars {} OutVars{~readerprogress2~0=v_~readerprogress2~0_5} AuxVars[] AssignedVars[~readerprogress2~0] 197#[L692]don't care [605] L692-->L692-1: Formula: (and (= |v_~#mutex~0.offset_6| 0) (= 3 |v_~#mutex~0.base_6|)) InVars {} OutVars{~#mutex~0.base=|v_~#mutex~0.base_6|, ~#mutex~0.offset=|v_~#mutex~0.offset_6|} AuxVars[] AssignedVars[~#mutex~0.base, ~#mutex~0.offset] 199#[L692-1]don't care [621] L692-1-->L692-2: Formula: (and (= (select |v_#valid_34| 3) 1) (= (select |v_#length_23| 3) 24)) InVars {#length=|v_#length_23|, #valid=|v_#valid_34|} OutVars{#length=|v_#length_23|, #valid=|v_#valid_34|} AuxVars[] AssignedVars[] 201#[L692-2]don't care [594] L692-2-->L692-3: Formula: (= (select (select |v_#memory_int_20| |v_~#mutex~0.base_7|) |v_~#mutex~0.offset_7|) 0) InVars {~#mutex~0.offset=|v_~#mutex~0.offset_7|, #memory_int=|v_#memory_int_20|, ~#mutex~0.base=|v_~#mutex~0.base_7|} OutVars{~#mutex~0.offset=|v_~#mutex~0.offset_7|, #memory_int=|v_#memory_int_20|, ~#mutex~0.base=|v_~#mutex~0.base_7|} AuxVars[] AssignedVars[] 203#[L692-3]don't care [696] L692-3-->L692-4: Formula: (= (select (select |v_#memory_int_21| |v_~#mutex~0.base_8|) (+ |v_~#mutex~0.offset_8| 4)) 0) InVars {~#mutex~0.offset=|v_~#mutex~0.offset_8|, #memory_int=|v_#memory_int_21|, ~#mutex~0.base=|v_~#mutex~0.base_8|} OutVars{~#mutex~0.offset=|v_~#mutex~0.offset_8|, #memory_int=|v_#memory_int_21|, ~#mutex~0.base=|v_~#mutex~0.base_8|} AuxVars[] AssignedVars[] 205#[L692-4]don't care [667] L692-4-->L692-5: Formula: (= 0 (select (select |v_#memory_int_22| |v_~#mutex~0.base_9|) (+ |v_~#mutex~0.offset_9| 8))) InVars {~#mutex~0.offset=|v_~#mutex~0.offset_9|, #memory_int=|v_#memory_int_22|, ~#mutex~0.base=|v_~#mutex~0.base_9|} OutVars{~#mutex~0.offset=|v_~#mutex~0.offset_9|, #memory_int=|v_#memory_int_22|, ~#mutex~0.base=|v_~#mutex~0.base_9|} AuxVars[] AssignedVars[] 207#[L692-5]don't care [615] L692-5-->L692-6: Formula: (= (select (select |v_#memory_int_7| |v_~#mutex~0.base_3|) (+ |v_~#mutex~0.offset_3| 12)) 0) InVars {~#mutex~0.offset=|v_~#mutex~0.offset_3|, #memory_int=|v_#memory_int_7|, ~#mutex~0.base=|v_~#mutex~0.base_3|} OutVars{~#mutex~0.offset=|v_~#mutex~0.offset_3|, #memory_int=|v_#memory_int_7|, ~#mutex~0.base=|v_~#mutex~0.base_3|} AuxVars[] AssignedVars[] 209#[L692-6]don't care [732] L692-6-->L692-7: Formula: (= (select (select |v_#memory_int_8| |v_~#mutex~0.base_4|) (+ |v_~#mutex~0.offset_4| 16)) 0) InVars {~#mutex~0.offset=|v_~#mutex~0.offset_4|, #memory_int=|v_#memory_int_8|, ~#mutex~0.base=|v_~#mutex~0.base_4|} OutVars{~#mutex~0.offset=|v_~#mutex~0.offset_4|, #memory_int=|v_#memory_int_8|, ~#mutex~0.base=|v_~#mutex~0.base_4|} AuxVars[] AssignedVars[] 211#[L692-7]don't care [699] L692-7-->L-1-3: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 213#[L-1-3]don't care [728] L-1-3-->L-1-4: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 215#[L-1-4]don't care [622] L-1-4-->L-1-5: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1] 217#[L-1-5]don't care [579] L-1-5-->L782: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~nondet23#1=|v_ULTIMATE.start_main_#t~nondet23#1_1|, ULTIMATE.start_main_#t~pre26#1=|v_ULTIMATE.start_main_#t~pre26#1_1|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_1|, ULTIMATE.start_main_#t~mem30#1=|v_ULTIMATE.start_main_#t~mem30#1_1|, ULTIMATE.start_main_~#t3~0#1.offset=|v_ULTIMATE.start_main_~#t3~0#1.offset_1|, ULTIMATE.start_main_#t~pre24#1=|v_ULTIMATE.start_main_#t~pre24#1_1|, ULTIMATE.start_main_#t~nondet25#1=|v_ULTIMATE.start_main_#t~nondet25#1_1|, ULTIMATE.start_main_~#t3~0#1.base=|v_ULTIMATE.start_main_~#t3~0#1.base_1|, ULTIMATE.start_main_#t~mem29#1=|v_ULTIMATE.start_main_#t~mem29#1_1|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_1|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_1|, ULTIMATE.start_main_#t~nondet27#1=|v_ULTIMATE.start_main_#t~nondet27#1_1|, ULTIMATE.start_main_#t~pre22#1=|v_ULTIMATE.start_main_#t~pre22#1_1|, ULTIMATE.start_main_#t~mem28#1=|v_ULTIMATE.start_main_#t~mem28#1_1|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet23#1, ULTIMATE.start_main_#t~pre26#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~mem30#1, ULTIMATE.start_main_~#t3~0#1.offset, ULTIMATE.start_main_#t~pre24#1, ULTIMATE.start_main_#t~nondet25#1, ULTIMATE.start_main_~#t3~0#1.base, ULTIMATE.start_main_#t~mem29#1, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_#t~nondet27#1, ULTIMATE.start_main_#t~pre22#1, ULTIMATE.start_main_#t~mem28#1, ULTIMATE.start_main_~#t2~0#1.base] 219#[L782]don't care [715] L782-->L782-1: Formula: (and (< |v_#StackHeapBarrier_3| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) (= |v_ULTIMATE.start_main_~#t1~0#1.offset_2| 0) (not (= |v_ULTIMATE.start_main_~#t1~0#1.base_2| 0)) (= (store |v_#length_10| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 4) |v_#length_9|) (= (select |v_#valid_14| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) 0) (= (store |v_#valid_14| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 1) |v_#valid_13|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_10|, #valid=|v_#valid_14|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_9|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_2|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_2|, #valid=|v_#valid_13|} AuxVars[] AssignedVars[#valid, #length, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset] 221#[L782-1]don't care [663] L782-1-->L782-2: Formula: (and (= (store |v_#length_12| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 4) |v_#length_11|) (not (= |v_ULTIMATE.start_main_~#t2~0#1.base_2| 0)) (= (store |v_#valid_16| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 1) |v_#valid_15|) (= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_2|) (= (select |v_#valid_16| |v_ULTIMATE.start_main_~#t2~0#1.base_2|) 0) (< |v_#StackHeapBarrier_4| |v_ULTIMATE.start_main_~#t2~0#1.base_2|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_4|, #length=|v_#length_12|, #valid=|v_#valid_16|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_4|, #length=|v_#length_11|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_2|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_2|, #valid=|v_#valid_15|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#t2~0#1.offset, #valid, #length, ULTIMATE.start_main_~#t2~0#1.base] 223#[L782-2]don't care [587] L782-2-->L782-3: Formula: (and (= |v_ULTIMATE.start_main_~#t3~0#1.offset_2| 0) (not (= |v_ULTIMATE.start_main_~#t3~0#1.base_2| 0)) (< |v_#StackHeapBarrier_5| |v_ULTIMATE.start_main_~#t3~0#1.base_2|) (= (store |v_#valid_18| |v_ULTIMATE.start_main_~#t3~0#1.base_2| 1) |v_#valid_17|) (= (store |v_#length_14| |v_ULTIMATE.start_main_~#t3~0#1.base_2| 4) |v_#length_13|) (= (select |v_#valid_18| |v_ULTIMATE.start_main_~#t3~0#1.base_2|) 0)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_5|, #length=|v_#length_14|, #valid=|v_#valid_18|} OutVars{ULTIMATE.start_main_~#t3~0#1.base=|v_ULTIMATE.start_main_~#t3~0#1.base_2|, #StackHeapBarrier=|v_#StackHeapBarrier_5|, #length=|v_#length_13|, ULTIMATE.start_main_~#t3~0#1.offset=|v_ULTIMATE.start_main_~#t3~0#1.offset_2|, #valid=|v_#valid_17|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#t3~0#1.offset, #valid, ULTIMATE.start_main_~#t3~0#1.base, #length] 225#[L782-3]don't care [637] L782-3-->L784: Formula: (= |v_#pthreadsMutex_5| (store |v_#pthreadsMutex_6| |v_~#mutex~0.base_5| (store (select |v_#pthreadsMutex_6| |v_~#mutex~0.base_5|) |v_~#mutex~0.offset_5| 0))) InVars {~#mutex~0.offset=|v_~#mutex~0.offset_5|, #pthreadsMutex=|v_#pthreadsMutex_6|, ~#mutex~0.base=|v_~#mutex~0.base_5|} OutVars{~#mutex~0.offset=|v_~#mutex~0.offset_5|, #pthreadsMutex=|v_#pthreadsMutex_5|, ~#mutex~0.base=|v_~#mutex~0.base_5|} AuxVars[] AssignedVars[#pthreadsMutex] 227#[L784]don't care [709] L784-->L784-1: Formula: (= |v_#pthreadsForks_1| |v_ULTIMATE.start_main_#t~pre22#1_2|) InVars {#pthreadsForks=|v_#pthreadsForks_1|} OutVars{#pthreadsForks=|v_#pthreadsForks_1|, ULTIMATE.start_main_#t~pre22#1=|v_ULTIMATE.start_main_#t~pre22#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre22#1] 229#[L784-1]don't care [614] L784-1-->L784-2: Formula: (= (+ 1 |v_#pthreadsForks_3|) |v_#pthreadsForks_2|) InVars {#pthreadsForks=|v_#pthreadsForks_3|} OutVars{#pthreadsForks=|v_#pthreadsForks_2|} AuxVars[] AssignedVars[#pthreadsForks] 231#[L784-2]don't care [647] L784-2-->L784-3: Formula: (and (= (select |v_#valid_19| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) 1) (<= (+ |v_ULTIMATE.start_main_~#t1~0#1.offset_3| 4) (select |v_#length_15| |v_ULTIMATE.start_main_~#t1~0#1.base_3|)) (<= 0 |v_ULTIMATE.start_main_~#t1~0#1.offset_3|) (= (store |v_#memory_int_10| |v_ULTIMATE.start_main_~#t1~0#1.base_3| (store (select |v_#memory_int_10| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) |v_ULTIMATE.start_main_~#t1~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre22#1_3|)) |v_#memory_int_9|)) InVars {#valid=|v_#valid_19|, #memory_int=|v_#memory_int_10|, ULTIMATE.start_main_#t~pre22#1=|v_ULTIMATE.start_main_#t~pre22#1_3|, #length=|v_#length_15|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} OutVars{#valid=|v_#valid_19|, #memory_int=|v_#memory_int_9|, ULTIMATE.start_main_#t~pre22#1=|v_ULTIMATE.start_main_#t~pre22#1_3|, #length=|v_#length_15|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} AuxVars[] AssignedVars[#memory_int] 233#[L784-3]don't care [851] L784-3-->qrcu_reader1ENTRY: Formula: (and (= v_qrcu_reader1Thread1of1ForFork2_thidvar1_2 0) (= 0 |v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset_4|) (= |v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.base_4| 0) (= v_qrcu_reader1Thread1of1ForFork2_thidvar0_2 |v_ULTIMATE.start_main_#t~pre22#1_6|)) InVars {ULTIMATE.start_main_#t~pre22#1=|v_ULTIMATE.start_main_#t~pre22#1_6|} OutVars{qrcu_reader1Thread1of1ForFork2_#t~nondet9#1=|v_qrcu_reader1Thread1of1ForFork2_#t~nondet9#1_10|, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post6#1=|v_qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post6#1_4|, qrcu_reader1Thread1of1ForFork2_#t~nondet10#1=|v_qrcu_reader1Thread1of1ForFork2_#t~nondet10#1_10|, qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset=|v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset_4|, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use2_~myidx#1=|v_qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use2_~myidx#1_4|, qrcu_reader1Thread1of1ForFork2_assume_abort_if_not_~cond#1=|v_qrcu_reader1Thread1of1ForFork2_assume_abort_if_not_~cond#1_6|, qrcu_reader1Thread1of1ForFork2_#res#1.base=|v_qrcu_reader1Thread1of1ForFork2_#res#1.base_4|, qrcu_reader1Thread1of1ForFork2_#res#1.offset=|v_qrcu_reader1Thread1of1ForFork2_#res#1.offset_4|, qrcu_reader1Thread1of1ForFork2_~myidx~0#1=|v_qrcu_reader1Thread1of1ForFork2_~myidx~0#1_12|, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_#in~myidx#1=|v_qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_#in~myidx#1_4|, qrcu_reader1Thread1of1ForFork2_thidvar0=v_qrcu_reader1Thread1of1ForFork2_thidvar0_2, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use2_#t~post4#1=|v_qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use2_#t~post4#1_4|, qrcu_reader1Thread1of1ForFork2_~arg#1.base=|v_qrcu_reader1Thread1of1ForFork2_~arg#1.base_4|, qrcu_reader1Thread1of1ForFork2_thidvar1=v_qrcu_reader1Thread1of1ForFork2_thidvar1_2, qrcu_reader1Thread1of1ForFork2_~arg#1.offset=|v_qrcu_reader1Thread1of1ForFork2_~arg#1.offset_4|, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_~myidx#1=|v_qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_~myidx#1_4|, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post5#1=|v_qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post5#1_4|, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use2_#in~myidx#1=|v_qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use2_#in~myidx#1_4|, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use1_~myidx#1=|v_qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use1_~myidx#1_4|, ULTIMATE.start_main_#t~pre22#1=|v_ULTIMATE.start_main_#t~pre22#1_6|, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use1_#t~post3#1=|v_qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use1_#t~post3#1_4|, qrcu_reader1Thread1of1ForFork2_#in~arg#1.base=|v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.base_4|, qrcu_reader1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1=|v_qrcu_reader1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1_6|, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use1_#in~myidx#1=|v_qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use1_#in~myidx#1_4|} AuxVars[] AssignedVars[qrcu_reader1Thread1of1ForFork2_#t~nondet9#1, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post6#1, qrcu_reader1Thread1of1ForFork2_#t~nondet10#1, qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use2_~myidx#1, qrcu_reader1Thread1of1ForFork2_assume_abort_if_not_~cond#1, qrcu_reader1Thread1of1ForFork2_#res#1.base, qrcu_reader1Thread1of1ForFork2_#res#1.offset, qrcu_reader1Thread1of1ForFork2_~myidx~0#1, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_#in~myidx#1, qrcu_reader1Thread1of1ForFork2_thidvar0, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use2_#t~post4#1, qrcu_reader1Thread1of1ForFork2_~arg#1.base, qrcu_reader1Thread1of1ForFork2_thidvar1, qrcu_reader1Thread1of1ForFork2_~arg#1.offset, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_~myidx#1, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use_done_#t~post5#1, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use2_#in~myidx#1, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use1_~myidx#1, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use1_#t~post3#1, qrcu_reader1Thread1of1ForFork2_#in~arg#1.base, qrcu_reader1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1, qrcu_reader1Thread1of1ForFork2___VERIFIER_atomic_use1_#in~myidx#1] 235#[L784-4, qrcu_reader1ENTRY]don't care [736] qrcu_reader1ENTRY-->L724: Formula: (and (= |v_qrcu_reader1Thread1of1ForFork2_~arg#1.offset_1| |v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset_1|) (= |v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.base_1| |v_qrcu_reader1Thread1of1ForFork2_~arg#1.base_1|)) InVars {qrcu_reader1Thread1of1ForFork2_#in~arg#1.base=|v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.base_1|, qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset=|v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset_1|} OutVars{qrcu_reader1Thread1of1ForFork2_#in~arg#1.base=|v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.base_1|, qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset=|v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset_1|, qrcu_reader1Thread1of1ForFork2_~arg#1.base=|v_qrcu_reader1Thread1of1ForFork2_~arg#1.base_1|, qrcu_reader1Thread1of1ForFork2_~arg#1.offset=|v_qrcu_reader1Thread1of1ForFork2_~arg#1.offset_1|} AuxVars[] AssignedVars[qrcu_reader1Thread1of1ForFork2_~arg#1.base, qrcu_reader1Thread1of1ForFork2_~arg#1.offset] 237#[L724, L784-4]don't care [737] L724-->L725-2: Formula: true InVars {} OutVars{qrcu_reader1Thread1of1ForFork2_~myidx~0#1=|v_qrcu_reader1Thread1of1ForFork2_~myidx~0#1_1|} AuxVars[] AssignedVars[qrcu_reader1Thread1of1ForFork2_~myidx~0#1] 241#[L784-4, L725-2]don't care [2022-07-26 13:22:19,468 INFO L735 eck$LassoCheckResult]: Loop: 241#[L784-4, L725-2]don't care [740] L725-2-->L726: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 251#[L726, L784-4]don't care [742] L726-->L727: Formula: (= |v_qrcu_reader1Thread1of1ForFork2_~myidx~0#1_3| v_~idx~0_1) InVars {~idx~0=v_~idx~0_1} OutVars{qrcu_reader1Thread1of1ForFork2_~myidx~0#1=|v_qrcu_reader1Thread1of1ForFork2_~myidx~0#1_3|, ~idx~0=v_~idx~0_1} AuxVars[] AssignedVars[qrcu_reader1Thread1of1ForFork2_~myidx~0#1] 265#[L784-4, L727]don't care [745] L727-->L727-2: Formula: (= |v_qrcu_reader1Thread1of1ForFork2_#t~nondet9#1_3| 0) InVars {qrcu_reader1Thread1of1ForFork2_#t~nondet9#1=|v_qrcu_reader1Thread1of1ForFork2_#t~nondet9#1_3|} OutVars{qrcu_reader1Thread1of1ForFork2_#t~nondet9#1=|v_qrcu_reader1Thread1of1ForFork2_#t~nondet9#1_3|} AuxVars[] AssignedVars[] 285#[L784-4, L727-2]don't care [748] L727-2-->L731: Formula: true InVars {} OutVars{qrcu_reader1Thread1of1ForFork2_#t~nondet9#1=|v_qrcu_reader1Thread1of1ForFork2_#t~nondet9#1_7|} AuxVars[] AssignedVars[qrcu_reader1Thread1of1ForFork2_#t~nondet9#1] 311#[L731, L784-4]don't care [752] L731-->L731-2: Formula: (= |v_qrcu_reader1Thread1of1ForFork2_#t~nondet10#1_3| 0) InVars {qrcu_reader1Thread1of1ForFork2_#t~nondet10#1=|v_qrcu_reader1Thread1of1ForFork2_#t~nondet10#1_3|} OutVars{qrcu_reader1Thread1of1ForFork2_#t~nondet10#1=|v_qrcu_reader1Thread1of1ForFork2_#t~nondet10#1_3|} AuxVars[] AssignedVars[] 341#[L784-4, L731-2]don't care [755] L731-2-->L725-2: Formula: true InVars {} OutVars{qrcu_reader1Thread1of1ForFork2_#t~nondet10#1=|v_qrcu_reader1Thread1of1ForFork2_#t~nondet10#1_7|} AuxVars[] AssignedVars[qrcu_reader1Thread1of1ForFork2_#t~nondet10#1] 241#[L784-4, L725-2]don't care [2022-07-26 13:22:19,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:22:19,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1981669688, now seen corresponding path program 1 times [2022-07-26 13:22:19,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:22:19,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055157279] [2022-07-26 13:22:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:22:19,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:22:19,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:19,604 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:22:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:19,662 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:22:19,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:22:19,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1306428713, now seen corresponding path program 1 times [2022-07-26 13:22:19,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:22:19,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771268215] [2022-07-26 13:22:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:22:19,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:22:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:19,685 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:22:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:19,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:22:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-26 13:22:19,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1312399072, now seen corresponding path program 1 times [2022-07-26 13:22:19,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-26 13:22:19,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858686387] [2022-07-26 13:22:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-26 13:22:19,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-26 13:22:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:19,722 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-26 13:22:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-26 13:22:19,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-26 13:22:21,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.07 01:22:21 BoogieIcfgContainer [2022-07-26 13:22:21,013 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-26 13:22:21,014 INFO L158 Benchmark]: Toolchain (without parser) took 9167.57ms. Allocated memory was 204.5MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 178.0MB in the beginning and 4.1GB in the end (delta: -3.9GB). Peak memory consumption was 729.0MB. Max. memory is 8.0GB. [2022-07-26 13:22:21,014 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 204.5MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-07-26 13:22:21,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.77ms. Allocated memory is still 204.5MB. Free memory was 178.0MB in the beginning and 166.5MB in the end (delta: 11.5MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. [2022-07-26 13:22:21,015 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.98ms. Allocated memory is still 204.5MB. Free memory was 166.5MB in the beginning and 163.6MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-07-26 13:22:21,016 INFO L158 Benchmark]: Boogie Preprocessor took 30.41ms. Allocated memory is still 204.5MB. Free memory was 163.6MB in the beginning and 161.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-26 13:22:21,016 INFO L158 Benchmark]: RCFGBuilder took 643.33ms. Allocated memory is still 204.5MB. Free memory was 161.5MB in the beginning and 129.4MB in the end (delta: 32.1MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-07-26 13:22:21,016 INFO L158 Benchmark]: BuchiAutomizer took 8043.62ms. Allocated memory was 204.5MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 129.0MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 681.1MB. Max. memory is 8.0GB. [2022-07-26 13:22:21,019 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 204.5MB. Free memory is still 167.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 374.77ms. Allocated memory is still 204.5MB. Free memory was 178.0MB in the beginning and 166.5MB in the end (delta: 11.5MB). Peak memory consumption was 14.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.98ms. Allocated memory is still 204.5MB. Free memory was 166.5MB in the beginning and 163.6MB in the end (delta: 2.9MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.41ms. Allocated memory is still 204.5MB. Free memory was 163.6MB in the beginning and 161.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 643.33ms. Allocated memory is still 204.5MB. Free memory was 161.5MB in the beginning and 129.4MB in the end (delta: 32.1MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. * BuchiAutomizer took 8043.62ms. Allocated memory was 204.5MB in the beginning and 4.7GB in the end (delta: 4.5GB). Free memory was 129.0MB in the beginning and 4.1GB in the end (delta: -4.0GB). Peak memory consumption was 681.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.8s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 725]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {\old(cond)=0, \old(myidx)=0, \old(myidx)=0, \old(myidx)=0, \result=0, \result={0:0}, arg={0:0}, arg={0:0}, cond=0, ctr1=1, ctr2=0, idx=0, mutex={3:0}, myidx=0, myidx=0, myidx=0, myidx=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@16d3561e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@220dd5b5 in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4316498f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@780db115 in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@b0759d in0,-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@567e7656=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@64ae39ec=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@679919c8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@13e5cd4f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@1ebcfbaf=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@37c5478e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@64182146=0, readerprogress1=0, readerprogress2=0, t1={31633:0}, t2={31634:0}, t3={31632:0}} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 725]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L689] 0 int idx=0; [L690] 0 int ctr1=1, ctr2=0; [L691] 0 int readerprogress1=0, readerprogress2=0; [L692] 0 pthread_mutex_t mutex; [L782] 0 pthread_t t1, t2, t3; [L784] FCALL, FORK 0 pthread_create(&t1, 0, qrcu_reader1, 0) [L724] 1 int myidx; Loop: [L725] COND TRUE 1 [L726] myidx = idx [L727] COND FALSE !(__VERIFIER_nondet_int()) [L731] COND FALSE !(__VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-07-26 13:22:21,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...