./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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-?-eb692b5 [2022-07-19 21:14:53,481 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:14:53,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:14:53,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:14:53,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:14:53,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:14:53,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:14:53,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:14:53,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:14:53,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:14:53,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:14:53,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:14:53,513 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:14:53,514 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:14:53,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:14:53,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:14:53,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:14:53,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:14:53,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:14:53,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:14:53,520 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:14:53,520 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:14:53,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:14:53,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:14:53,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:14:53,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:14:53,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:14:53,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:14:53,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:14:53,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:14:53,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:14:53,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:14:53,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:14:53,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:14:53,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:14:53,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:14:53,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:14:53,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:14:53,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:14:53,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:14:53,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:14:53,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:14:53,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:14:53,547 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:14:53,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:14:53,548 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:14:53,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:14:53,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:14:53,549 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:14:53,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:14:53,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:14:53,550 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:14:53,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:14:53,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:14:53,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:14:53,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:14:53,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:14:53,551 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:14:53,551 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:14:53,551 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:14:53,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:14:53,552 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:14:53,552 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:14:53,552 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:14:53,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:14:53,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:14:53,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:14:53,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:53,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:14:53,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:14:53,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:14:53,554 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:14:53,554 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:14:53,554 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:14:53,554 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:14:53,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:14:53,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 36c3c3dc239d6629a8ba20aca175d79c45880ab21458cd8ebdaac3a8ef359066 [2022-07-19 21:14:53,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:14:53,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:14:53,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:14:53,721 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:14:53,722 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:14:53,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2022-07-19 21:14:53,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c34b886/37df517741254675a3994a90bc915e23/FLAGf41db8886 [2022-07-19 21:14:54,123 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:14:54,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/condvar_spurious_wakeup.i [2022-07-19 21:14:54,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c34b886/37df517741254675a3994a90bc915e23/FLAGf41db8886 [2022-07-19 21:14:54,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1c34b886/37df517741254675a3994a90bc915e23 [2022-07-19 21:14:54,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:14:54,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:14:54,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:14:54,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:14:54,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:14:54,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2775867a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54, skipping insertion in model container [2022-07-19 21:14:54,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:14:54,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:14:54,683 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:14:54,832 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] [2022-07-19 21:14:54,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:14:54,850 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:14:54,862 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-19 21:14:54,888 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] [2022-07-19 21:14:54,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:14:54,927 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:14:54,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54 WrapperNode [2022-07-19 21:14:54,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:14:54,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:14:54,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:14:54,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:14:54,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,973 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2022-07-19 21:14:54,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:14:54,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:14:54,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:14:54,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:14:54,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,992 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:54,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:55,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:55,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:14:55,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:14:55,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:14:55,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:14:55,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (1/1) ... [2022-07-19 21:14:55,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:14:55,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:14:55,030 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) [2022-07-19 21:14:55,038 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 [2022-07-19 21:14:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:14:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:14:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-19 21:14:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:14:55,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:14:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:14:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:14:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-07-19 21:14:55,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-07-19 21:14:55,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:14:55,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:14:55,061 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:14:55,132 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:14:55,133 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:14:55,231 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:14:55,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:14:55,236 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 21:14:55,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:55 BoogieIcfgContainer [2022-07-19 21:14:55,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:14:55,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:14:55,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:14:55,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:14:55,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:14:54" (1/3) ... [2022-07-19 21:14:55,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f18556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:14:55, skipping insertion in model container [2022-07-19 21:14:55,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:14:54" (2/3) ... [2022-07-19 21:14:55,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f18556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:14:55, skipping insertion in model container [2022-07-19 21:14:55,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:55" (3/3) ... [2022-07-19 21:14:55,244 INFO L111 eAbstractionObserver]: Analyzing ICFG condvar_spurious_wakeup.i [2022-07-19 21:14:55,247 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:14:55,263 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:14:55,279 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:14:55,279 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:14:55,319 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-19 21:14:55,355 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 74 transitions, 156 flow [2022-07-19 21:14:55,389 INFO L129 PetriNetUnfolder]: 3/73 cut-off events. [2022-07-19 21:14:55,389 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-19 21:14:55,398 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. [2022-07-19 21:14:55,399 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 74 transitions, 156 flow [2022-07-19 21:14:55,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 66 transitions, 135 flow [2022-07-19 21:14:55,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:14:55,428 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6eae9d7d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b3918a [2022-07-19 21:14:55,429 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:14:55,450 INFO L129 PetriNetUnfolder]: 3/62 cut-off events. [2022-07-19 21:14:55,453 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-19 21:14:55,453 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:14:55,454 INFO L200 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] [2022-07-19 21:14:55,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, threadErr0ASSERT_VIOLATIONERROR_FUNCTION, threadErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:14:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:14:55,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1033982442, now seen corresponding path program 1 times [2022-07-19 21:14:55,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:14:55,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014430683] [2022-07-19 21:14:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:14:55,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:14:55,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:14:55,609 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 21:14:55,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 21:14:55,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 21:14:55,687 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 21:14:55,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-19 21:14:55,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-19 21:14:55,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-07-19 21:14:55,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:14:55,691 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-19 21:14:55,696 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:14:55,696 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:14:55,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:14:55 BasicIcfg [2022-07-19 21:14:55,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:14:55,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:14:55,734 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:14:55,734 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:14:55,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:14:55" (3/4) ... [2022-07-19 21:14:55,736 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-19 21:14:55,774 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:14:55,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:14:55,777 INFO L158 Benchmark]: Toolchain (without parser) took 1252.97ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 69.5MB in the beginning and 85.5MB in the end (delta: -16.0MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2022-07-19 21:14:55,779 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:14:55,780 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.31ms. Allocated memory is still 102.8MB. Free memory was 69.3MB in the beginning and 68.0MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:14:55,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.54ms. Allocated memory is still 102.8MB. Free memory was 67.7MB in the beginning and 65.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:14:55,781 INFO L158 Benchmark]: Boogie Preprocessor took 31.85ms. Allocated memory is still 102.8MB. Free memory was 65.9MB in the beginning and 64.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:14:55,781 INFO L158 Benchmark]: RCFGBuilder took 231.48ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 53.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-19 21:14:55,783 INFO L158 Benchmark]: TraceAbstraction took 492.81ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 52.3MB in the beginning and 89.0MB in the end (delta: -36.7MB). Peak memory consumption was 686.3kB. Max. memory is 16.1GB. [2022-07-19 21:14:55,784 INFO L158 Benchmark]: Witness Printer took 42.52ms. Allocated memory is still 138.4MB. Free memory was 89.0MB in the beginning and 85.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:14:55,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 57.6MB in the beginning and 57.6MB in the end (delta: 47.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.31ms. Allocated memory is still 102.8MB. Free memory was 69.3MB in the beginning and 68.0MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.54ms. Allocated memory is still 102.8MB. Free memory was 67.7MB in the beginning and 65.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.85ms. Allocated memory is still 102.8MB. Free memory was 65.9MB in the beginning and 64.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 231.48ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 53.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 492.81ms. Allocated memory was 102.8MB in the beginning and 138.4MB in the end (delta: 35.7MB). Free memory was 52.3MB in the beginning and 89.0MB in the end (delta: -36.7MB). Peak memory consumption was 686.3kB. Max. memory is 16.1GB. * Witness Printer took 42.52ms. Allocated memory is still 138.4MB. Free memory was 89.0MB in the beginning and 85.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 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, 0.0s 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! [2022-07-19 21:14:55,817 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