/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-semanticLbe.epf -i ../../../trunk/examples/svcomp/pthread-divine/condvar.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-21b0908 [2022-07-22 12:12:46,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 12:12:46,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 12:12:46,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-07-22 12:12:46,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 12:12:46,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 12:12:46,654 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 12:12:46,655 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 12:12:46,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 12:12:46,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 12:12:46,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 12:12:46,680 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 12:12:46,682 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 12:12:46,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 12:12:46,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 12:12:46,688 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 12:12:46,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 12:12:46,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-07-22 12:12:46,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 12:12:46,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 12:12:46,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 12:12:46,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/buchiAutomizer/concurrent-automaton-semanticLbe.epf [2022-07-22 12:12:46,739 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 12:12:46,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 12:12:46,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 12:12:46,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 12:12:46,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 12:12:46,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 12:12:46,741 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 12:12:46,742 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 12:12:46,742 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 12:12:46,742 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 12:12:46,742 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 12:12:46,742 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 12:12:46,743 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 12:12:46,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 12:12:46,743 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 12:12:46,743 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 12:12:46,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 12:12:46,744 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 12:12:46,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 12:12:46,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 12:12:46,744 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 12:12:46,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 12:12:46,744 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 12:12:46,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 12:12:46,745 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 12:12:46,745 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 12:12:46,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 12:12:46,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 12:12:46,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 12:12:46,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 12:12:46,746 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 12:12:46,747 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 12:12:46,747 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-07-22 12:12:47,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 12:12:47,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 12:12:47,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 12:12:47,141 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 12:12:47,142 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 12:12:47,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/condvar.i [2022-07-22 12:12:47,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c67af877a/6a2063feafa64f8fadf85e3d339ffc7a/FLAGf713d3358 [2022-07-22 12:12:47,980 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 12:12:47,981 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/condvar.i [2022-07-22 12:12:47,995 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c67af877a/6a2063feafa64f8fadf85e3d339ffc7a/FLAGf713d3358 [2022-07-22 12:12:48,254 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c67af877a/6a2063feafa64f8fadf85e3d339ffc7a [2022-07-22 12:12:48,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 12:12:48,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-07-22 12:12:48,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 12:12:48,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 12:12:48,271 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 12:12:48,272 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387c1f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48, skipping insertion in model container [2022-07-22 12:12:48,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 12:12:48,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 12:12:48,494 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 12:12:48,695 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-divine/condvar.i[30458,30471] [2022-07-22 12:12:48,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:12:48,720 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 12:12:48,735 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 12:12:48,760 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-divine/condvar.i[30458,30471] [2022-07-22 12:12:48,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 12:12:48,812 INFO L208 MainTranslator]: Completed translation [2022-07-22 12:12:48,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48 WrapperNode [2022-07-22 12:12:48,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 12:12:48,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 12:12:48,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 12:12:48,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 12:12:48,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,838 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,872 INFO L137 Inliner]: procedures = 169, calls = 35, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-07-22 12:12:48,872 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 12:12:48,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 12:12:48,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 12:12:48,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 12:12:48,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 12:12:48,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 12:12:48,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 12:12:48,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 12:12:48,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (1/1) ... [2022-07-22 12:12:48,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 12:12:48,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 12:12:48,944 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 12:12:48,960 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 12:12:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 12:12:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 12:12:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 12:12:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 12:12:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 12:12:49,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 12:12:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 12:12:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-07-22 12:12:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-07-22 12:12:49,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 12:12:49,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 12:12:49,005 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 12:12:49,147 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 12:12:49,150 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 12:12:49,419 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 12:12:49,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 12:12:49,437 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 12:12:49,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:12:49 BoogieIcfgContainer [2022-07-22 12:12:49,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 12:12:49,446 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 12:12:49,446 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 12:12:49,453 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 12:12:49,454 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 12:12:49,460 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 12:12:48" (1/3) ... [2022-07-22 12:12:49,461 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@485d556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 12:12:49, skipping insertion in model container [2022-07-22 12:12:49,461 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 12:12:49,461 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 12:12:48" (2/3) ... [2022-07-22 12:12:49,462 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@485d556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 12:12:49, skipping insertion in model container [2022-07-22 12:12:49,462 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 12:12:49,462 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 12:12:49" (3/3) ... [2022-07-22 12:12:49,464 INFO L322 chiAutomizerObserver]: Analyzing ICFG condvar.i [2022-07-22 12:12:49,602 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-22 12:12:49,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 76 places, 78 transitions, 164 flow [2022-07-22 12:12:49,679 INFO L129 PetriNetUnfolder]: 5/76 cut-off events. [2022-07-22 12:12:49,680 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 12:12:49,684 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 5/76 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 56 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2022-07-22 12:12:49,684 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 78 transitions, 164 flow [2022-07-22 12:12:49,692 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 76 transitions, 158 flow [2022-07-22 12:12:49,696 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-07-22 12:12:49,713 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 76 transitions, 158 flow [2022-07-22 12:12:49,717 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 75 places, 76 transitions, 158 flow [2022-07-22 12:12:49,717 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 75 places, 76 transitions, 158 flow [2022-07-22 12:12:49,736 INFO L129 PetriNetUnfolder]: 5/76 cut-off events. [2022-07-22 12:12:49,736 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-22 12:12:49,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 76 events. 5/76 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2022-07-22 12:12:49,739 INFO L116 LiptonReduction]: Number of co-enabled transitions 360 [2022-07-22 12:12:53,454 INFO L131 LiptonReduction]: Checked pairs total: 331 [2022-07-22 12:12:53,454 INFO L133 LiptonReduction]: Total number of compositions: 70 [2022-07-22 12:12:53,489 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 12:12:53,489 INFO L301 stractBuchiCegarLoop]: Hoare is false [2022-07-22 12:12:53,489 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 12:12:53,489 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 12:12:53,489 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 12:12:53,490 INFO L305 stractBuchiCegarLoop]: Difference is false [2022-07-22 12:12:53,490 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 12:12:53,490 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 12:12:53,492 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 0 states, but on-demand construction may add more states [2022-07-22 12:12:53,528 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2022-07-22 12:12:53,529 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 12:12:53,530 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 12:12:53,537 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-22 12:12:53,537 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-22 12:12:53,538 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 12:12:53,538 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand currently 12 states, but on-demand construction may add more states [2022-07-22 12:12:53,542 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 5 [2022-07-22 12:12:53,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 12:12:53,542 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 12:12:53,543 INFO L150 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-22 12:12:53,543 INFO L151 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-22 12:12:53,549 INFO L748 eck$LassoCheckResult]: Stem: 79#[ULTIMATE.startENTRY]don't care [264] ULTIMATE.startENTRY-->L712-2: Formula: (let ((.cse3 (select |v_#memory_int_108| 1)) (.cse2 (select |v_#memory_int_108| |v_~#lock~0.base_67|)) (.cse1 (select |v_#memory_int_108| |v_~#cond~0.base_36|)) (.cse0 (select |v_#memory_int_108| 2))) (and (= 115 (select .cse0 0)) (= 24 (select |v_#length_76| 3)) (= (select .cse1 (+ 8 |v_~#cond~0.offset_36|)) 0) (= (select .cse2 (+ |v_~#lock~0.offset_67| 12)) 0) (= (select |v_#valid_97| 2) 1) (= (select .cse1 (+ 4 |v_~#cond~0.offset_36|)) 0) (= (select .cse0 5) 0) (= (select |v_#valid_97| 1) 1) (= 3 |v_~#lock~0.base_67|) (= (select .cse2 (+ |v_~#lock~0.offset_67| 4)) 0) (= |v_~#cond~0.base_36| 4) (= (select .cse3 1) 0) (= (select .cse1 (+ 12 |v_~#cond~0.offset_36|)) 0) (= (select |v_#valid_97| 3) 1) (< |v_#StackHeapBarrier_21| |v_ULTIMATE.start_main_~#t~0#1.base_51|) (= (store |v_#length_76| |v_ULTIMATE.start_main_~#t~0#1.base_51| 4) |v_#length_75|) (= (select .cse0 2) 99) (= (select .cse3 0) 48) (= (select .cse1 (+ |v_~#cond~0.offset_36| 24)) 0) (= |v_~#cond~0.offset_36| 0) (< 0 |v_#StackHeapBarrier_21|) (= (+ |v_#pthreadsForks_25| 1) |v_#pthreadsForks_24|) (= |v_ULTIMATE.start_main_~#t~0#1.offset_43| 0) (= 104 (select .cse0 4)) (= (select |v_#valid_97| 0) 0) (= 46 (select .cse0 3)) (= (store |v_#valid_97| |v_ULTIMATE.start_main_~#t~0#1.base_51| 1) |v_#valid_96|) (= (select .cse1 (+ 20 |v_~#cond~0.offset_36|)) 0) (= |v_ULTIMATE.start_main_#t~pre6#1_25| |v_#pthreadsForks_25|) (= (select .cse2 (+ 16 |v_~#lock~0.offset_67|)) 0) (= (select .cse1 |v_~#cond~0.offset_36|) 0) (= |v_~#lock~0.offset_67| 0) (= (select .cse2 (+ |v_~#lock~0.offset_67| 8)) 0) (= v_~x_set~0_64 0) (= 0 (select .cse2 |v_~#lock~0.offset_67|)) (= (select |v_#valid_97| 4) 1) (= v_~x~0_46 0) (= (store |v_#memory_int_108| |v_ULTIMATE.start_main_~#t~0#1.base_51| (store (select |v_#memory_int_108| |v_ULTIMATE.start_main_~#t~0#1.base_51|) |v_ULTIMATE.start_main_~#t~0#1.offset_43| |v_ULTIMATE.start_main_#t~pre6#1_25|)) |v_#memory_int_107|) (= |v_#NULL.offset_8| 0) (= (select .cse1 (+ 16 |v_~#cond~0.offset_36|)) 0) (= (select |v_#valid_97| |v_ULTIMATE.start_main_~#t~0#1.base_51|) 0) (= 2 (select |v_#length_76| 1)) (= |v_#NULL.base_8| 0) (= (select |v_#length_76| 2) 6) (= (select .cse1 (+ 28 |v_~#cond~0.offset_36|)) 0) (= 48 (select |v_#length_76| 4)) (= 118 (select .cse0 1)))) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_21|, #pthreadsForks=|v_#pthreadsForks_25|, #valid=|v_#valid_97|, #memory_int=|v_#memory_int_108|, #length=|v_#length_76|} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_25|, ~#lock~0.base=|v_~#lock~0.base_67|, ULTIMATE.start_main_#t~post8#1=|v_ULTIMATE.start_main_#t~post8#1_25|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_19|, ~#cond~0.offset=|v_~#cond~0.offset_36|, #NULL.offset=|v_#NULL.offset_8|, #NULL.base=|v_#NULL.base_8|, ~#cond~0.base=|v_~#cond~0.base_36|, #StackHeapBarrier=|v_#StackHeapBarrier_21|, ULTIMATE.start_main_~i~0#1=|v_ULTIMATE.start_main_~i~0#1_68|, #pthreadsForks=|v_#pthreadsForks_24|, ULTIMATE.start_main_~#t~0#1.offset=|v_ULTIMATE.start_main_~#t~0#1.offset_43|, #valid=|v_#valid_96|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_17|, #memory_int=|v_#memory_int_107|, ULTIMATE.start_main_#t~mem9#1=|v_ULTIMATE.start_main_#t~mem9#1_30|, ~#lock~0.offset=|v_~#lock~0.offset_67|, #length=|v_#length_75|, ~x_set~0=v_~x_set~0_64, ULTIMATE.start_main_~#t~0#1.base=|v_ULTIMATE.start_main_~#t~0#1.base_51|, ~x~0=v_~x~0_46} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1, ~#lock~0.base, ULTIMATE.start_main_#t~post8#1, ULTIMATE.start_main_#res#1, ~#cond~0.offset, #NULL.offset, #NULL.base, ~#cond~0.base, ULTIMATE.start_main_~i~0#1, #pthreadsForks, ULTIMATE.start_main_~#t~0#1.offset, #valid, ULTIMATE.start_main_#t~nondet7#1, #memory_int, ULTIMATE.start_main_#t~mem9#1, ~#lock~0.offset, #length, ~x_set~0, ULTIMATE.start_main_~#t~0#1.base, ~x~0] 82#[L712-2]don't care [193] L712-2-->threadENTRY: Formula: (and (= v_threadThread1of1ForFork0_thidvar1_2 0) (= |v_threadThread1of1ForFork0_#in~arg.base_4| 0) (= |v_threadThread1of1ForFork0_#in~arg.offset_4| 0) (= |v_ULTIMATE.start_main_#t~pre6#1_6| v_threadThread1of1ForFork0_thidvar0_2)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_6|} OutVars{threadThread1of1ForFork0_#in~arg.offset=|v_threadThread1of1ForFork0_#in~arg.offset_4|, threadThread1of1ForFork0_~arg.base=v_threadThread1of1ForFork0_~arg.base_4, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_6|, threadThread1of1ForFork0_~arg.offset=v_threadThread1of1ForFork0_~arg.offset_4, threadThread1of1ForFork0_#res.base=|v_threadThread1of1ForFork0_#res.base_4|, threadThread1of1ForFork0_#t~nondet4=|v_threadThread1of1ForFork0_#t~nondet4_6|, threadThread1of1ForFork0_thidvar0=v_threadThread1of1ForFork0_thidvar0_2, threadThread1of1ForFork0_#t~nondet5=|v_threadThread1of1ForFork0_#t~nondet5_6|, threadThread1of1ForFork0_#res.offset=|v_threadThread1of1ForFork0_#res.offset_4|, threadThread1of1ForFork0_#in~arg.base=|v_threadThread1of1ForFork0_#in~arg.base_4|, threadThread1of1ForFork0_thidvar1=v_threadThread1of1ForFork0_thidvar1_2} AuxVars[] AssignedVars[threadThread1of1ForFork0_#in~arg.offset, threadThread1of1ForFork0_~arg.base, threadThread1of1ForFork0_~arg.offset, threadThread1of1ForFork0_#res.base, threadThread1of1ForFork0_#t~nondet4, threadThread1of1ForFork0_thidvar0, threadThread1of1ForFork0_#t~nondet5, threadThread1of1ForFork0_#res.offset, threadThread1of1ForFork0_#in~arg.base, threadThread1of1ForFork0_thidvar1] 84#[L712-3, threadENTRY]don't care [241] threadENTRY-->L704-2: Formula: (let ((.cse0 (select |v_#pthreadsMutex_44| |v_~#lock~0.base_39|))) (and (= |v_threadThread1of1ForFork0_#in~arg.offset_7| v_threadThread1of1ForFork0_~arg.offset_7) (= (select .cse0 |v_~#lock~0.offset_39|) 0) (= v_threadThread1of1ForFork0_~arg.base_7 |v_threadThread1of1ForFork0_#in~arg.base_7|) (= (store |v_#pthreadsMutex_44| |v_~#lock~0.base_39| (store .cse0 |v_~#lock~0.offset_39| 1)) |v_#pthreadsMutex_43|))) InVars {threadThread1of1ForFork0_#in~arg.offset=|v_threadThread1of1ForFork0_#in~arg.offset_7|, #pthreadsMutex=|v_#pthreadsMutex_44|, ~#lock~0.base=|v_~#lock~0.base_39|, ~#lock~0.offset=|v_~#lock~0.offset_39|, threadThread1of1ForFork0_#in~arg.base=|v_threadThread1of1ForFork0_#in~arg.base_7|} OutVars{threadThread1of1ForFork0_#in~arg.offset=|v_threadThread1of1ForFork0_#in~arg.offset_7|, #pthreadsMutex=|v_#pthreadsMutex_43|, threadThread1of1ForFork0_~arg.base=v_threadThread1of1ForFork0_~arg.base_7, ~#lock~0.base=|v_~#lock~0.base_39|, threadThread1of1ForFork0_~arg.offset=v_threadThread1of1ForFork0_~arg.offset_7, threadThread1of1ForFork0_#t~nondet4=|v_threadThread1of1ForFork0_#t~nondet4_9|, ~#lock~0.offset=|v_~#lock~0.offset_39|, threadThread1of1ForFork0_#in~arg.base=|v_threadThread1of1ForFork0_#in~arg.base_7|} AuxVars[] AssignedVars[#pthreadsMutex, threadThread1of1ForFork0_~arg.base, threadThread1of1ForFork0_~arg.offset, threadThread1of1ForFork0_#t~nondet4] 86#[L712-3, L704-2]don't care [2022-07-22 12:12:53,551 INFO L750 eck$LassoCheckResult]: Loop: 86#[L712-3, L704-2]don't care [235] L704-2-->L704-2: Formula: (and (= |v_#pthreadsMutex_33| (store |v_#pthreadsMutex_35| |v_~#lock~0.base_33| (store (select |v_#pthreadsMutex_35| |v_~#lock~0.base_33|) |v_~#lock~0.offset_33| 1))) (= (mod v_~x_set~0_26 256) 0)) InVars {#pthreadsMutex=|v_#pthreadsMutex_35|, ~#lock~0.base=|v_~#lock~0.base_33|, ~#lock~0.offset=|v_~#lock~0.offset_33|, ~x_set~0=v_~x_set~0_26} OutVars{#pthreadsMutex=|v_#pthreadsMutex_33|, ~#lock~0.base=|v_~#lock~0.base_33|, ~#lock~0.offset=|v_~#lock~0.offset_33|, threadThread1of1ForFork0_#t~nondet5=|v_threadThread1of1ForFork0_#t~nondet5_11|, ~x_set~0=v_~x_set~0_26} AuxVars[] AssignedVars[#pthreadsMutex, threadThread1of1ForFork0_#t~nondet5] 86#[L712-3, L704-2]don't care [2022-07-22 12:12:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:12:53,558 INFO L85 PathProgramCache]: Analyzing trace with hash 289719, now seen corresponding path program 1 times [2022-07-22 12:12:53,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:12:53,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241890101] [2022-07-22 12:12:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:12:53,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:12:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:12:53,782 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 12:12:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:12:53,878 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 12:12:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:12:53,881 INFO L85 PathProgramCache]: Analyzing trace with hash 266, now seen corresponding path program 1 times [2022-07-22 12:12:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:12:53,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965469373] [2022-07-22 12:12:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:12:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:12:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:12:53,917 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 12:12:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:12:53,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 12:12:53,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 12:12:53,938 INFO L85 PathProgramCache]: Analyzing trace with hash 8981524, now seen corresponding path program 1 times [2022-07-22 12:12:53,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 12:12:53,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777879247] [2022-07-22 12:12:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 12:12:53,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 12:12:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:12:54,000 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 12:12:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 12:12:54,025 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 12:12:55,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 12:12:55 BoogieIcfgContainer [2022-07-22 12:12:55,027 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 12:12:55,031 INFO L158 Benchmark]: Toolchain (without parser) took 6766.76ms. Allocated memory was 153.1MB in the beginning and 192.9MB in the end (delta: 39.8MB). Free memory was 125.9MB in the beginning and 144.8MB in the end (delta: -18.9MB). Peak memory consumption was 103.3MB. Max. memory is 8.0GB. [2022-07-22 12:12:55,032 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 153.1MB. Free memory was 124.1MB in the beginning and 123.7MB in the end (delta: 440.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-07-22 12:12:55,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 546.28ms. Allocated memory is still 153.1MB. Free memory was 125.7MB in the beginning and 106.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-07-22 12:12:55,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.86ms. Allocated memory is still 153.1MB. Free memory was 106.6MB in the beginning and 104.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-22 12:12:55,038 INFO L158 Benchmark]: Boogie Preprocessor took 30.93ms. Allocated memory is still 153.1MB. Free memory was 104.6MB in the beginning and 103.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-07-22 12:12:55,039 INFO L158 Benchmark]: RCFGBuilder took 538.57ms. Allocated memory is still 153.1MB. Free memory was 103.2MB in the beginning and 128.2MB in the end (delta: -24.9MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. [2022-07-22 12:12:55,044 INFO L158 Benchmark]: BuchiAutomizer took 5581.12ms. Allocated memory was 153.1MB in the beginning and 192.9MB in the end (delta: 39.8MB). Free memory was 128.2MB in the beginning and 144.8MB in the end (delta: -16.6MB). Peak memory consumption was 104.5MB. Max. memory is 8.0GB. [2022-07-22 12:12:55,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 153.1MB. Free memory was 124.1MB in the beginning and 123.7MB in the end (delta: 440.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 546.28ms. Allocated memory is still 153.1MB. Free memory was 125.7MB in the beginning and 106.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.86ms. Allocated memory is still 153.1MB. Free memory was 106.6MB in the beginning and 104.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.93ms. Allocated memory is still 153.1MB. Free memory was 104.6MB in the beginning and 103.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 538.57ms. Allocated memory is still 153.1MB. Free memory was 103.2MB in the beginning and 128.2MB in the end (delta: -24.9MB). Peak memory consumption was 10.4MB. Max. memory is 8.0GB. * BuchiAutomizer took 5581.12ms. Allocated memory was 153.1MB in the beginning and 192.9MB in the end (delta: 39.8MB). Free memory was 128.2MB in the beginning and 144.8MB in the end (delta: -16.6MB). Peak memory consumption was 104.5MB. 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 5.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.4s. 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: 3.8s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 704]: 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 {\result={0:0}, \result=0, arg={0:0}, arg={0:0}, cond={4:0}, i=0, lock={3:0}, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3c3ec775=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@668520c1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@673dbd83 in14299,0, org.eclipse.cdt.internal.core.dom.parser.c.CASTIdExpression@4a9a56a6=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@7fc3e470=0, t={19912:0}, x=0, x_set=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 704]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L697] 0 pthread_mutex_t lock; [L698] 0 pthread_cond_t cond; [L699] 0 int x; [L700] 0 _Bool x_set = 0; [L711] 0 pthread_t t; [L712] FCALL, FORK 0 pthread_create( &t, ((void *)0), thread, ((void *)0) ) Loop: [L704] COND TRUE !x_set End of lasso representation. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 75 PlacesBefore, 12 PlacesAfterwards, 76 TransitionsBefore, 10 TransitionsAfterwards, 360 CoEnabledTransitionPairs, 7 FixpointIterations, 45 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 70 TotalNumberOfCompositions, 331 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 295, positive: 278, positive conditional: 0, positive unconditional: 278, negative: 17, negative conditional: 0, negative unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 250, positive: 239, positive conditional: 0, positive unconditional: 239, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 250, positive: 236, positive conditional: 0, positive unconditional: 236, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 14, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 66, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 295, positive: 39, positive conditional: 0, positive unconditional: 39, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 250, unknown conditional: 0, unknown unconditional: 250] , Statistics on independence cache: Total cache size (in pairs): 6, Positive cache size: 4, Positive conditional cache size: 0, Positive unconditional cache size: 4, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2 RESULT: Ultimate proved your program to be incorrect! [2022-07-22 12:12:55,143 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...