/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-syntacticLbe.epf -i ../../../trunk/examples/svcomp/pthread-atomic/qrcu-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-21b0908 [2022-07-22 12:33:52,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:33:52,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:33:52,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-07-22 12:33:52,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-syntacticLbe.epf [2022-07-22 12:33:52,831 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:33:52,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:33:52,832 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:33:52,832 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:33:52,837 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:33:52,837 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:33:52,837 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:33:52,838 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 12:33:52,838 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 12:33:52,839 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 12:33:52,840 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 12:33:52,840 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 12:33:52,840 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 12:33:52,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:33:52,841 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:33:52,841 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 12:33:52,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:33:52,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:33:52,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:33:52,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 12:33:52,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 12:33:52,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 12:33:52,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:33:52,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:33:52,844 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 12:33:52,844 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:33:52,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 12:33:52,845 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:33:52,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:33:52,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:33:52,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:33:52,846 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-07-22 12:33:52,849 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 12:33:52,849 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-22 12:33:53,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:33:53,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:33:53,313 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:33:53,314 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:33:53,316 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:33:53,318 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/qrcu-1.i [2022-07-22 12:33:53,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ca12a68/9c98c62b7e264df1b7d2838257ce6598/FLAGa5eb82c56 [2022-07-22 12:33:54,131 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:33:54,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i [2022-07-22 12:33:54,148 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ca12a68/9c98c62b7e264df1b7d2838257ce6598/FLAGa5eb82c56 [2022-07-22 12:33:54,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ca12a68/9c98c62b7e264df1b7d2838257ce6598 [2022-07-22 12:33:54,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:33:54,437 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-22 12:33:54,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:33:54,441 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:33:54,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:33:54,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:33:54" (1/1) ... [2022-07-22 12:33:54,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794da7cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:54, skipping insertion in model container [2022-07-22 12:33:54,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:33:54" (1/1) ... [2022-07-22 12:33:54,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:33:54,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:33:55,036 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] [2022-07-22 12:33:55,038 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] [2022-07-22 12:33:55,068 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:33:55,090 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:33:55,136 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[30694,30707] [2022-07-22 12:33:55,138 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] [2022-07-22 12:33:55,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:33:55,207 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:33:55,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55 WrapperNode [2022-07-22 12:33:55,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:33:55,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:33:55,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:33:55,210 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:33:55,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (1/1) ... [2022-07-22 12:33:55,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (1/1) ... [2022-07-22 12:33:55,279 INFO L137 Inliner]: procedures = 177, calls = 54, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 262 [2022-07-22 12:33:55,279 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:33:55,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:33:55,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:33:55,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:33:55,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (1/1) ... [2022-07-22 12:33:55,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (1/1) ... [2022-07-22 12:33:55,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (1/1) ... [2022-07-22 12:33:55,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (1/1) ... [2022-07-22 12:33:55,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (1/1) ... [2022-07-22 12:33:55,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (1/1) ... [2022-07-22 12:33:55,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (1/1) ... [2022-07-22 12:33:55,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:33:55,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:33:55,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:33:55,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:33:55,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (1/1) ... [2022-07-22 12:33:55,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 12:33:55,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:33:55,380 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) [2022-07-22 12:33:55,389 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 [2022-07-22 12:33:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-07-22 12:33:55,472 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-07-22 12:33:55,472 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-07-22 12:33:55,475 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-07-22 12:33:55,476 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 12:33:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 12:33:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-07-22 12:33:55,480 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-07-22 12:33:55,480 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 12:33:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:33:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 12:33:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 12:33:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:33:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:33:55,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:33:55,484 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 12:33:55,682 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:33:55,684 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:33:56,077 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:33:56,341 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:33:56,341 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-22 12:33:56,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:33:56 BoogieIcfgContainer [2022-07-22 12:33:56,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:33:56,346 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 12:33:56,346 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 12:33:56,351 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 12:33:56,352 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 12:33:56,352 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 12:33:54" (1/3) ... [2022-07-22 12:33:56,354 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@778d2856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 12:33:56, skipping insertion in model container [2022-07-22 12:33:56,354 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 12:33:56,355 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:33:55" (2/3) ... [2022-07-22 12:33:56,355 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@778d2856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 12:33:56, skipping insertion in model container [2022-07-22 12:33:56,355 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 12:33:56,356 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:33:56" (3/3) ... [2022-07-22 12:33:56,357 INFO L322 chiAutomizerObserver]: Analyzing ICFG qrcu-1.i [2022-07-22 12:33:56,482 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-22 12:33:56,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 167 places, 178 transitions, 380 flow [2022-07-22 12:33:56,592 INFO L129 PetriNetUnfolder]: 18/172 cut-off events. [2022-07-22 12:33:56,592 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 12:33:56,601 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. [2022-07-22 12:33:56,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 178 transitions, 380 flow [2022-07-22 12:33:56,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 172 transitions, 362 flow [2022-07-22 12:33:56,619 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-07-22 12:33:56,631 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 172 transitions, 362 flow [2022-07-22 12:33:56,634 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 172 transitions, 362 flow [2022-07-22 12:33:56,635 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 164 places, 172 transitions, 362 flow [2022-07-22 12:33:56,684 INFO L129 PetriNetUnfolder]: 18/172 cut-off events. [2022-07-22 12:33:56,684 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-22 12:33:56,690 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 317 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. [2022-07-22 12:33:56,700 INFO L116 LiptonReduction]: Number of co-enabled transitions 8646 [2022-07-22 12:34:02,472 INFO L131 LiptonReduction]: Checked pairs total: 20882 [2022-07-22 12:34:02,473 INFO L133 LiptonReduction]: Total number of compositions: 125 [2022-07-22 12:34:02,496 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 12:34:02,496 INFO L301 stractBuchiCegarLoop]: Hoare is false [2022-07-22 12:34:02,496 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 12:34:02,496 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 12:34:02,496 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 12:34:02,496 INFO L305 stractBuchiCegarLoop]: Difference is false [2022-07-22 12:34:02,497 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 12:34:02,497 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 12:34:02,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-22 12:34:03,002 INFO L131 ngComponentsAnalysis]: Automaton has 976 accepting balls. 976 [2022-07-22 12:34:03,002 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 12:34:03,002 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 12:34:03,010 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-22 12:34:03,010 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-22 12:34:03,010 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 12:34:03,011 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 3331 states, but on-demand construction may add more states [2022-07-22 12:34:03,112 INFO L131 ngComponentsAnalysis]: Automaton has 976 accepting balls. 976 [2022-07-22 12:34:03,113 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 12:34:03,113 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 12:34:03,114 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-22 12:34:03,114 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-22 12:34:03,121 INFO L748 eck$LassoCheckResult]: Stem: 170#[ULTIMATE.startENTRY]don't care [979] ULTIMATE.startENTRY-->L784-3: Formula: (let ((.cse3 (store |v_#valid_196| |v_ULTIMATE.start_main_~#t1~0#1.base_39| 1))) (let ((.cse1 (select |v_#memory_int_144| 1)) (.cse2 (store .cse3 |v_ULTIMATE.start_main_~#t2~0#1.base_41| 1)) (.cse0 (select |v_#memory_int_144| |v_~#mutex~0.base_56|))) (and (= (select |v_#valid_196| 2) 1) (< |v_#StackHeapBarrier_29| |v_ULTIMATE.start_main_~#t1~0#1.base_39|) (= (select .cse0 (+ |v_~#mutex~0.offset_56| 12)) 0) (= (select .cse0 (+ 16 |v_~#mutex~0.offset_56|)) 0) (= (select .cse1 1) 0) (= (select .cse0 (+ |v_~#mutex~0.offset_56| 8)) 0) (= |v_#pthreadsForks_54| (+ |v_#pthreadsForks_55| 1)) (= |v_ULTIMATE.start_main_~#t2~0#1.offset_33| 0) (= v_~ctr1~0_160 1) (= (select .cse2 |v_ULTIMATE.start_main_~#t3~0#1.base_41|) 0) (= v_~idx~0_42 0) (< |v_#StackHeapBarrier_29| |v_ULTIMATE.start_main_~#t2~0#1.base_41|) (= v_~ctr2~0_150 0) (= |v_#length_126| (store (store (store |v_#length_127| |v_ULTIMATE.start_main_~#t1~0#1.base_39| 4) |v_ULTIMATE.start_main_~#t2~0#1.base_41| 4) |v_ULTIMATE.start_main_~#t3~0#1.base_41| 4)) (= (store |v_#memory_int_144| |v_ULTIMATE.start_main_~#t1~0#1.base_39| (store (select |v_#memory_int_144| |v_ULTIMATE.start_main_~#t1~0#1.base_39|) |v_ULTIMATE.start_main_~#t1~0#1.offset_31| |v_ULTIMATE.start_main_#t~pre22#1_25|)) |v_#memory_int_143|) (= (select .cse0 (+ |v_~#mutex~0.offset_56| 4)) 0) (= (store |v_#pthreadsMutex_56| |v_~#mutex~0.base_56| (store (select |v_#pthreadsMutex_56| |v_~#mutex~0.base_56|) |v_~#mutex~0.offset_56| 0)) |v_#pthreadsMutex_55|) (= v_~readerprogress2~0_55 0) (= |v_~#mutex~0.offset_56| 0) (= |v_#pthreadsForks_55| |v_ULTIMATE.start_main_#t~pre22#1_25|) (= (select |v_#valid_196| |v_ULTIMATE.start_main_~#t1~0#1.base_39|) 0) (= (select .cse1 0) 48) (= |v_ULTIMATE.start_main_~#t3~0#1.offset_33| 0) (= (select |v_#length_127| 3) 24) (= (select |v_#valid_196| 1) 1) (< 0 |v_#StackHeapBarrier_29|) (= (store .cse2 |v_ULTIMATE.start_main_~#t3~0#1.base_41| 1) |v_#valid_195|) (= |v_#NULL.offset_8| 0) (= |v_ULTIMATE.start_main_~#t1~0#1.offset_31| 0) (< |v_#StackHeapBarrier_29| |v_ULTIMATE.start_main_~#t3~0#1.base_41|) (= (select |v_#length_127| 2) 9) (= (select |v_#valid_196| 0) 0) (= |v_#NULL.base_8| 0) (= (select |v_#valid_196| 3) 1) (= 2 (select |v_#length_127| 1)) (= (select .cse3 |v_ULTIMATE.start_main_~#t2~0#1.base_41|) 0) (= v_~readerprogress1~0_49 0) (= (select .cse0 |v_~#mutex~0.offset_56|) 0) (= 3 |v_~#mutex~0.base_56|)))) InVars {#pthreadsMutex=|v_#pthreadsMutex_56|, #StackHeapBarrier=|v_#StackHeapBarrier_29|, #pthreadsForks=|v_#pthreadsForks_55|, #valid=|v_#valid_196|, #memory_int=|v_#memory_int_144|, #length=|v_#length_127|} OutVars{~#mutex~0.base=|v_~#mutex~0.base_56|, ULTIMATE.start_main_#t~pre26#1=|v_ULTIMATE.start_main_#t~pre26#1_25|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_33|, ULTIMATE.start_main_~#t3~0#1.offset=|v_ULTIMATE.start_main_~#t3~0#1.offset_33|, ULTIMATE.start_main_#t~mem30#1=|v_ULTIMATE.start_main_#t~mem30#1_20|, ~idx~0=v_~idx~0_42, ULTIMATE.start_main_#t~nondet25#1=|v_ULTIMATE.start_main_#t~nondet25#1_15|, ULTIMATE.start_main_~#t3~0#1.base=|v_ULTIMATE.start_main_~#t3~0#1.base_41|, #NULL.offset=|v_#NULL.offset_8|, ~ctr1~0=v_~ctr1~0_160, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_31|, ~readerprogress1~0=v_~readerprogress1~0_49, #pthreadsForks=|v_#pthreadsForks_54|, #length=|v_#length_126|, #pthreadsMutex=|v_#pthreadsMutex_55|, ULTIMATE.start_main_#t~nondet23#1=|v_ULTIMATE.start_main_#t~nondet23#1_17|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_24|, ULTIMATE.start_main_#t~pre24#1=|v_ULTIMATE.start_main_#t~pre24#1_27|, ~#mutex~0.offset=|v_~#mutex~0.offset_56|, ULTIMATE.start_main_#t~mem29#1=|v_ULTIMATE.start_main_#t~mem29#1_18|, ~readerprogress2~0=v_~readerprogress2~0_55, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_39|, ULTIMATE.start_main_#t~nondet27#1=|v_ULTIMATE.start_main_#t~nondet27#1_15|, ~ctr2~0=v_~ctr2~0_150, #NULL.base=|v_#NULL.base_8|, #StackHeapBarrier=|v_#StackHeapBarrier_29|, #valid=|v_#valid_195|, #memory_int=|v_#memory_int_143|, ULTIMATE.start_main_#t~pre22#1=|v_ULTIMATE.start_main_#t~pre22#1_25|, ULTIMATE.start_main_#t~mem28#1=|v_ULTIMATE.start_main_#t~mem28#1_18|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_41|} AuxVars[] AssignedVars[~#mutex~0.base, ULTIMATE.start_main_#t~pre26#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_~#t3~0#1.offset, ULTIMATE.start_main_#t~mem30#1, ~idx~0, ULTIMATE.start_main_#t~nondet25#1, ULTIMATE.start_main_~#t3~0#1.base, #NULL.offset, ~ctr1~0, ULTIMATE.start_main_~#t1~0#1.offset, ~readerprogress1~0, #pthreadsForks, #length, #pthreadsMutex, ULTIMATE.start_main_#t~nondet23#1, ULTIMATE.start_main_#res#1, ULTIMATE.start_main_#t~pre24#1, ~#mutex~0.offset, ULTIMATE.start_main_#t~mem29#1, ~readerprogress2~0, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_#t~nondet27#1, ~ctr2~0, #NULL.base, #valid, #memory_int, ULTIMATE.start_main_#t~pre22#1, ULTIMATE.start_main_#t~mem28#1, ULTIMATE.start_main_~#t2~0#1.base] 173#[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] 175#[qrcu_reader1ENTRY, L784-4]don't care [878] qrcu_reader1ENTRY-->L725-2: Formula: (and (= |v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.base_5| |v_qrcu_reader1Thread1of1ForFork2_~arg#1.base_5|) (= |v_qrcu_reader1Thread1of1ForFork2_~arg#1.offset_5| |v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset_5|)) InVars {qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset=|v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset_5|, qrcu_reader1Thread1of1ForFork2_#in~arg#1.base=|v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.base_5|} OutVars{qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset=|v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.offset_5|, qrcu_reader1Thread1of1ForFork2_#in~arg#1.base=|v_qrcu_reader1Thread1of1ForFork2_#in~arg#1.base_5|, qrcu_reader1Thread1of1ForFork2_~myidx~0#1=|v_qrcu_reader1Thread1of1ForFork2_~myidx~0#1_13|, qrcu_reader1Thread1of1ForFork2_~arg#1.base=|v_qrcu_reader1Thread1of1ForFork2_~arg#1.base_5|, qrcu_reader1Thread1of1ForFork2_~arg#1.offset=|v_qrcu_reader1Thread1of1ForFork2_~arg#1.offset_5|} AuxVars[] AssignedVars[qrcu_reader1Thread1of1ForFork2_~myidx~0#1, qrcu_reader1Thread1of1ForFork2_~arg#1.base, qrcu_reader1Thread1of1ForFork2_~arg#1.offset] 179#[L725-2, L784-4]don't care [2022-07-22 12:34:03,122 INFO L750 eck$LassoCheckResult]: Loop: 179#[L725-2, L784-4]don't care [957] L725-2-->L725-2: Formula: (and (= v_~idx~0_28 |v_qrcu_reader1Thread1of1ForFork2_~myidx~0#1_29|) (= 0 |v_qrcu_reader1Thread1of1ForFork2_#t~nondet10#1_24|) (= |v_qrcu_reader1Thread1of1ForFork2_#t~nondet9#1_24| 0)) InVars {qrcu_reader1Thread1of1ForFork2_#t~nondet9#1=|v_qrcu_reader1Thread1of1ForFork2_#t~nondet9#1_24|, qrcu_reader1Thread1of1ForFork2_#t~nondet10#1=|v_qrcu_reader1Thread1of1ForFork2_#t~nondet10#1_24|, ~idx~0=v_~idx~0_28} OutVars{~idx~0=v_~idx~0_28, qrcu_reader1Thread1of1ForFork2_~myidx~0#1=|v_qrcu_reader1Thread1of1ForFork2_~myidx~0#1_29|} AuxVars[] AssignedVars[qrcu_reader1Thread1of1ForFork2_#t~nondet9#1, qrcu_reader1Thread1of1ForFork2_#t~nondet10#1, qrcu_reader1Thread1of1ForFork2_~myidx~0#1] 179#[L725-2, L784-4]don't care [2022-07-22 12:34:03,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash 997869, now seen corresponding path program 1 times [2022-07-22 12:34:03,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:03,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762959346] [2022-07-22 12:34:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:03,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:34:03,293 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 12:34:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:34:03,345 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 12:34:03,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash 988, now seen corresponding path program 1 times [2022-07-22 12:34:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:03,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177565501] [2022-07-22 12:34:03,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:03,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:03,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:34:03,362 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 12:34:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:34:03,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 12:34:03,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:34:03,372 INFO L85 PathProgramCache]: Analyzing trace with hash 30934896, now seen corresponding path program 1 times [2022-07-22 12:34:03,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:34:03,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99971065] [2022-07-22 12:34:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:34:03,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:34:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:34:03,405 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 12:34:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:34:03,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 12:34:04,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 12:34:04 BoogieIcfgContainer [2022-07-22 12:34:04,747 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 12:34:04,749 INFO L158 Benchmark]: Toolchain (without parser) took 10316.17ms. Allocated memory was 155.2MB in the beginning and 235.9MB in the end (delta: 80.7MB). Free memory was 127.8MB in the beginning and 161.6MB in the end (delta: -33.8MB). Peak memory consumption was 109.0MB. Max. memory is 8.0GB. [2022-07-22 12:34:04,749 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 155.2MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-07-22 12:34:04,750 INFO L158 Benchmark]: CACSL2BoogieTranslator took 768.18ms. Allocated memory is still 155.2MB. Free memory was 127.6MB in the beginning and 106.9MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-07-22 12:34:04,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.11ms. Allocated memory is still 155.2MB. Free memory was 106.8MB in the beginning and 104.1MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-07-22 12:34:04,752 INFO L158 Benchmark]: Boogie Preprocessor took 46.02ms. Allocated memory is still 155.2MB. Free memory was 104.1MB in the beginning and 102.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-22 12:34:04,753 INFO L158 Benchmark]: RCFGBuilder took 1017.82ms. Allocated memory is still 155.2MB. Free memory was 102.1MB in the beginning and 106.7MB in the end (delta: -4.7MB). Peak memory consumption was 7.1MB. Max. memory is 8.0GB. [2022-07-22 12:34:04,754 INFO L158 Benchmark]: BuchiAutomizer took 8401.66ms. Allocated memory was 155.2MB in the beginning and 235.9MB in the end (delta: 80.7MB). Free memory was 106.2MB in the beginning and 161.6MB in the end (delta: -55.4MB). Peak memory consumption was 86.1MB. Max. memory is 8.0GB. [2022-07-22 12:34:04,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 155.2MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 768.18ms. Allocated memory is still 155.2MB. Free memory was 127.6MB in the beginning and 106.9MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 70.11ms. Allocated memory is still 155.2MB. Free memory was 106.8MB in the beginning and 104.1MB in the end (delta: 2.8MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.02ms. Allocated memory is still 155.2MB. Free memory was 104.1MB in the beginning and 102.2MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1017.82ms. Allocated memory is still 155.2MB. Free memory was 102.1MB in the beginning and 106.7MB in the end (delta: -4.7MB). Peak memory consumption was 7.1MB. Max. memory is 8.0GB. * BuchiAutomizer took 8401.66ms. Allocated memory was 155.2MB in the beginning and 235.9MB in the end (delta: 80.7MB). Free memory was 106.2MB in the beginning and 161.6MB in the end (delta: -55.4MB). Peak memory consumption was 86.1MB. 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 8.1s 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: 5.9s - 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@1b3e06f3 in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@44801b72=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@49205fae=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@663c1414 in0,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7bdbf1f0 in-1,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@1220354a=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@45e64bc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@7146a694=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@270b4b54=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@2c56b910=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@54ff9825=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@76e58ec=0, readerprogress1=0, readerprogress2=0, t1={16219:0}, t2={16221:0}, t3={16220:0}} - 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8s, 164 PlacesBefore, 60 PlacesAfterwards, 172 TransitionsBefore, 63 TransitionsAfterwards, 8646 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 5 ChoiceCompositions, 125 TotalNumberOfCompositions, 20882 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9170, positive: 8765, positive conditional: 0, positive unconditional: 8765, negative: 405, negative conditional: 0, negative unconditional: 405, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4344, positive: 4253, positive conditional: 0, positive unconditional: 4253, negative: 91, negative conditional: 0, negative unconditional: 91, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9170, positive: 4512, positive conditional: 0, positive unconditional: 4512, negative: 314, negative conditional: 0, negative unconditional: 314, unknown: 4344, unknown conditional: 0, unknown unconditional: 4344] , Statistics on independence cache: Total cache size (in pairs): 432, Positive cache size: 390, Positive conditional cache size: 0, Positive unconditional cache size: 390, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42 RESULT: Ultimate proved your program to be incorrect! [2022-07-22 12:34:04,849 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...