./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 36c3c3dc239d6629a8ba20aca175d79c45880ab21458cd8ebdaac3a8ef359066 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 20:38:40,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 20:38:40,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 20:38:40,934 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 20:38:40,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 20:38:40,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 20:38:40,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 20:38:40,941 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 20:38:40,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 20:38:40,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 20:38:40,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 20:38:40,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 20:38:40,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 20:38:40,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 20:38:40,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 20:38:40,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 20:38:40,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 20:38:40,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 20:38:40,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 20:38:40,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 20:38:40,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 20:38:40,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 20:38:40,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 20:38:40,966 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 20:38:40,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 20:38:40,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 20:38:40,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 20:38:40,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 20:38:40,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 20:38:40,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 20:38:40,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 20:38:40,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 20:38:40,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 20:38:40,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 20:38:40,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 20:38:40,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 20:38:40,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 20:38:40,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 20:38:40,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 20:38:40,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 20:38:40,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 20:38:40,980 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 20:38:41,011 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 20:38:41,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 20:38:41,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 20:38:41,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 20:38:41,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 20:38:41,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 20:38:41,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 20:38:41,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 20:38:41,014 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 20:38:41,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 20:38:41,014 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 20:38:41,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 20:38:41,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 20:38:41,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 20:38:41,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 20:38:41,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 20:38:41,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 20:38:41,015 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 20:38:41,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 20:38:41,016 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 20:38:41,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 20:38:41,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 20:38:41,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 20:38:41,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 20:38:41,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 20:38:41,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 20:38:41,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 20:38:41,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 20:38:41,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 20:38:41,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 20:38:41,018 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 20:38:41,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 20:38:41,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 20:38:41,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36c3c3dc239d6629a8ba20aca175d79c45880ab21458cd8ebdaac3a8ef359066 [2022-02-20 20:38:41,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 20:38:41,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 20:38:41,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 20:38:41,284 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 20:38:41,284 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 20:38:41,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2022-02-20 20:38:41,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3329addea/7803a4e5f5694aa8ba3bbd286700f9dc/FLAG689d91339 [2022-02-20 20:38:41,727 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 20:38:41,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2022-02-20 20:38:41,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3329addea/7803a4e5f5694aa8ba3bbd286700f9dc/FLAG689d91339 [2022-02-20 20:38:42,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3329addea/7803a4e5f5694aa8ba3bbd286700f9dc [2022-02-20 20:38:42,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 20:38:42,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 20:38:42,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 20:38:42,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 20:38:42,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 20:38:42,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:42,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4489803b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42, skipping insertion in model container [2022-02-20 20:38:42,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:42,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 20:38:42,237 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 20:38:42,552 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-02-20 20:38:42,792 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i[30416,30429] [2022-02-20 20:38:42,804 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 20:38:42,821 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 20:38:42,848 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-02-20 20:38:42,895 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i[30416,30429] [2022-02-20 20:38:42,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 20:38:42,930 INFO L208 MainTranslator]: Completed translation [2022-02-20 20:38:42,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42 WrapperNode [2022-02-20 20:38:42,931 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 20:38:42,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 20:38:42,932 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 20:38:42,932 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 20:38:42,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:42,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:42,975 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-02-20 20:38:42,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 20:38:42,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 20:38:42,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 20:38:42,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 20:38:42,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:42,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:42,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:42,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:42,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:42,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:42,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:43,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 20:38:43,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 20:38:43,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 20:38:43,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 20:38:43,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (1/1) ... [2022-02-20 20:38:43,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 20:38:43,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 20:38:43,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 20:38:43,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 20:38:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-20 20:38:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-20 20:38:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-02-20 20:38:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 20:38:43,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-02-20 20:38:43,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-20 20:38:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 20:38:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-02-20 20:38:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-02-20 20:38:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 20:38:43,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 20:38:43,065 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-20 20:38:43,168 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 20:38:43,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 20:38:43,289 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 20:38:43,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 20:38:43,294 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-20 20:38:43,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 08:38:43 BoogieIcfgContainer [2022-02-20 20:38:43,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 20:38:43,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 20:38:43,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 20:38:43,299 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 20:38:43,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 08:38:42" (1/3) ... [2022-02-20 20:38:43,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4199c28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 08:38:43, skipping insertion in model container [2022-02-20 20:38:43,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 08:38:42" (2/3) ... [2022-02-20 20:38:43,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4199c28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 08:38:43, skipping insertion in model container [2022-02-20 20:38:43,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 08:38:43" (3/3) ... [2022-02-20 20:38:43,301 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2022-02-20 20:38:43,305 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-20 20:38:43,305 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 20:38:43,305 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 20:38:43,305 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-20 20:38:43,340 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,340 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,341 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,341 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,341 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,341 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,342 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,342 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,342 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,343 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,343 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,343 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,344 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,344 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,345 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,345 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,346 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,346 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,347 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,347 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,350 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,350 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,350 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,350 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,351 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,351 WARN L322 ript$VariableManager]: TermVariabe |threadThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-20 20:38:43,358 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-02-20 20:38:43,389 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 20:38:43,393 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 20:38:43,393 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-20 20:38:43,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 156 flow [2022-02-20 20:38:43,446 INFO L129 PetriNetUnfolder]: 3/73 cut-off events. [2022-02-20 20:38:43,446 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-02-20 20:38:43,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 73 events. 3/73 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/69 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2022-02-20 20:38:43,448 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 74 transitions, 156 flow [2022-02-20 20:38:43,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 66 transitions, 135 flow [2022-02-20 20:38:43,467 INFO L129 PetriNetUnfolder]: 3/63 cut-off events. [2022-02-20 20:38:43,467 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-02-20 20:38:43,467 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-02-20 20:38:43,468 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-20 20:38:43,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 20:38:43,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 20:38:43,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1033982442, now seen corresponding path program 1 times [2022-02-20 20:38:43,477 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 20:38:43,477 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884378176] [2022-02-20 20:38:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 20:38:43,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 20:38:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 20:38:43,638 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 20:38:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 20:38:43,708 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 20:38:43,710 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 20:38:43,711 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-02-20 20:38:43,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-02-20 20:38:43,713 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-02-20 20:38:43,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 20:38:43,717 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-20 20:38:43,720 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-02-20 20:38:43,721 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 20:38:43,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 08:38:43 BasicIcfg [2022-02-20 20:38:43,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 20:38:43,765 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 20:38:43,765 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 20:38:43,765 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 20:38:43,765 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 08:38:43" (3/4) ... [2022-02-20 20:38:43,768 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-02-20 20:38:43,828 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-20 20:38:43,829 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 20:38:43,831 INFO L158 Benchmark]: Toolchain (without parser) took 1703.68ms. Allocated memory was 109.1MB in the beginning and 218.1MB in the end (delta: 109.1MB). Free memory was 50.0MB in the beginning and 161.5MB in the end (delta: -111.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 20:38:43,831 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 20:38:43,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 779.96ms. Allocated memory was 109.1MB in the beginning and 218.1MB in the end (delta: 109.1MB). Free memory was 49.8MB in the beginning and 179.6MB in the end (delta: -129.8MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2022-02-20 20:38:43,832 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.40ms. Allocated memory is still 218.1MB. Free memory was 179.6MB in the beginning and 177.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 20:38:43,832 INFO L158 Benchmark]: Boogie Preprocessor took 30.93ms. Allocated memory is still 218.1MB. Free memory was 177.5MB in the beginning and 175.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 20:38:43,833 INFO L158 Benchmark]: RCFGBuilder took 288.74ms. Allocated memory is still 218.1MB. Free memory was 175.8MB in the beginning and 162.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-20 20:38:43,833 INFO L158 Benchmark]: TraceAbstraction took 467.35ms. Allocated memory is still 218.1MB. Free memory was 162.4MB in the beginning and 167.8MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 20:38:43,835 INFO L158 Benchmark]: Witness Printer took 64.56ms. Allocated memory is still 218.1MB. Free memory was 167.8MB in the beginning and 162.1MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-02-20 20:38:43,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 67.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 779.96ms. Allocated memory was 109.1MB in the beginning and 218.1MB in the end (delta: 109.1MB). Free memory was 49.8MB in the beginning and 179.6MB in the end (delta: -129.8MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.40ms. Allocated memory is still 218.1MB. Free memory was 179.6MB in the beginning and 177.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.93ms. Allocated memory is still 218.1MB. Free memory was 177.5MB in the beginning and 175.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 288.74ms. Allocated memory is still 218.1MB. Free memory was 175.8MB in the beginning and 162.8MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 467.35ms. Allocated memory is still 218.1MB. Free memory was 162.4MB in the beginning and 167.8MB in the end (delta: -5.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 64.56ms. Allocated memory is still 218.1MB. Free memory was 167.8MB in the beginning and 162.1MB in the end (delta: 5.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 704]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L697] 0 pthread_mutex_t lock; VAL [lock={3:0}] [L698] 0 pthread_cond_t cond; VAL [cond={4:0}, lock={3:0}] [L699] 0 int x; VAL [cond={4:0}, lock={3:0}, x=0] [L709] 0 pthread_t t; VAL [cond={4:0}, lock={3:0}, t={7:0}, x=0] [L712] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) VAL [arg={0:0}, cond={4:0}, lock={3:0}, pthread_create( &t, ((void *)0), thread, ((void *)0) )=-1, t={7:0}, x=0] [L704] 1 !(x == 42) ? reach_error() : (void)0 VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=0] [L704] 1 reach_error() VAL [arg={0:0}, arg={0:0}, cond={4:0}, lock={3:0}, x=0] - UnprovableResult [Line: 712]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 86 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-20 20:38:43,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE