./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stateful01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/stateful01-1.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 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:15:51,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:15:51,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:15:51,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:15:51,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:15:51,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:15:51,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:15:51,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:15:51,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:15:51,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:15:51,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:15:51,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:15:51,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:15:51,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:15:51,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:15:51,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:15:51,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:15:51,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:15:51,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:15:51,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:15:51,795 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:15:51,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:15:51,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:15:51,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:15:51,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:15:51,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:15:51,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:15:51,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:15:51,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:15:51,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:15:51,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:15:51,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:15:51,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:15:51,808 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:15:51,809 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:15:51,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:15:51,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:15:51,810 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:15:51,810 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:15:51,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:15:51,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:15:51,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:15:51,813 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:15:51,834 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:15:51,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:15:51,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:15:51,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:15:51,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:15:51,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:15:51,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:15:51,836 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:15:51,836 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:15:51,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:15:51,837 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:15:51,837 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:15:51,837 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:15:51,837 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:15:51,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:15:51,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:15:51,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:15:51,837 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:15:51,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:15:51,839 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:15:51,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:15:51,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:15:51,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:15:51,839 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:15:51,839 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:15:51,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:15:51,840 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:15:51,840 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:15:51,840 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:15:51,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:15:51,840 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:15:51,840 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:15:51,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:15:51,841 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-07-22 21:15:52,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:15:52,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:15:52,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:15:52,061 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:15:52,062 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:15:52,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stateful01-1.i [2022-07-22 21:15:52,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfad4ed15/40e749892b8144fc94bea063e4959267/FLAGdfe526161 [2022-07-22 21:15:52,529 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:15:52,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stateful01-1.i [2022-07-22 21:15:52,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfad4ed15/40e749892b8144fc94bea063e4959267/FLAGdfe526161 [2022-07-22 21:15:52,552 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfad4ed15/40e749892b8144fc94bea063e4959267 [2022-07-22 21:15:52,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:15:52,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:15:52,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:15:52,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:15:52,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:15:52,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:52,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52103fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52, skipping insertion in model container [2022-07-22 21:15:52,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:52,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:15:52,604 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:15:52,868 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/stateful01-1.i[30826,30839] [2022-07-22 21:15:52,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:15:52,876 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:15:52,926 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/stateful01-1.i[30826,30839] [2022-07-22 21:15:52,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:15:52,962 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:15:52,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52 WrapperNode [2022-07-22 21:15:52,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:15:52,965 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:15:52,965 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:15:52,966 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:15:52,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:52,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:53,011 INFO L137 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-07-22 21:15:53,012 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:15:53,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:15:53,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:15:53,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:15:53,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:53,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:53,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:53,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:53,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:53,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:53,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:53,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:15:53,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:15:53,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:15:53,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:15:53,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (1/1) ... [2022-07-22 21:15:53,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:15:53,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:15:53,071 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) [2022-07-22 21:15:53,072 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 [2022-07-22 21:15:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:15:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-22 21:15:53,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-22 21:15:53,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-22 21:15:53,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-22 21:15:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:15:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-22 21:15:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:15:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:15:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:15:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:15:53,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:15:53,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:15:53,095 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 21:15:53,191 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:15:53,192 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:15:53,354 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:15:53,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:15:53,361 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:15:53,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:15:53 BoogieIcfgContainer [2022-07-22 21:15:53,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:15:53,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:15:53,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:15:53,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:15:53,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:15:52" (1/3) ... [2022-07-22 21:15:53,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa5ac22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:15:53, skipping insertion in model container [2022-07-22 21:15:53,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:15:52" (2/3) ... [2022-07-22 21:15:53,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa5ac22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:15:53, skipping insertion in model container [2022-07-22 21:15:53,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:15:53" (3/3) ... [2022-07-22 21:15:53,368 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-07-22 21:15:53,371 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:15:53,383 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:15:53,384 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 21:15:53,384 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:15:53,440 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:15:53,474 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 93 transitions, 202 flow [2022-07-22 21:15:53,541 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2022-07-22 21:15:53,541 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:15:53,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 91 events. 1/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2022-07-22 21:15:53,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 93 transitions, 202 flow [2022-07-22 21:15:53,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 80 transitions, 172 flow [2022-07-22 21:15:53,551 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:15:53,555 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@5d1ec11d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@cf9cb30 [2022-07-22 21:15:53,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-22 21:15:53,573 INFO L129 PetriNetUnfolder]: 0/79 cut-off events. [2022-07-22 21:15:53,573 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:15:53,574 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:15:53,574 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, 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] [2022-07-22 21:15:53,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-22 21:15:53,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:15:53,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1215155975, now seen corresponding path program 1 times [2022-07-22 21:15:53,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:15:53,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439772904] [2022-07-22 21:15:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:15:53,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:15:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:15:53,795 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 21:15:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 21:15:53,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 21:15:53,912 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 21:15:53,913 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-22 21:15:53,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-22 21:15:53,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-22 21:15:53,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:15:53,915 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-22 21:15:53,926 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-22 21:15:53,927 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 21:15:53,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 09:15:53 BasicIcfg [2022-07-22 21:15:53,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 21:15:53,983 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 21:15:53,984 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 21:15:53,984 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 21:15:53,984 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:15:53" (3/4) ... [2022-07-22 21:15:53,985 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-22 21:15:54,040 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 21:15:54,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 21:15:54,041 INFO L158 Benchmark]: Toolchain (without parser) took 1485.57ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 57.1MB in the beginning and 61.6MB in the end (delta: -4.5MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2022-07-22 21:15:54,042 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:15:54,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.49ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 56.8MB in the beginning and 99.4MB in the end (delta: -42.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2022-07-22 21:15:54,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.78ms. Allocated memory is still 130.0MB. Free memory was 98.6MB in the beginning and 97.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 21:15:54,046 INFO L158 Benchmark]: Boogie Preprocessor took 33.17ms. Allocated memory is still 130.0MB. Free memory was 97.3MB in the beginning and 95.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 21:15:54,046 INFO L158 Benchmark]: RCFGBuilder took 315.26ms. Allocated memory is still 130.0MB. Free memory was 95.7MB in the beginning and 82.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-22 21:15:54,046 INFO L158 Benchmark]: TraceAbstraction took 618.74ms. Allocated memory is still 130.0MB. Free memory was 81.8MB in the beginning and 70.7MB in the end (delta: 11.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2022-07-22 21:15:54,046 INFO L158 Benchmark]: Witness Printer took 57.06ms. Allocated memory is still 130.0MB. Free memory was 70.7MB in the beginning and 61.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 21:15:54,048 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 96.5MB. Free memory is still 74.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.49ms. Allocated memory was 96.5MB in the beginning and 130.0MB in the end (delta: 33.6MB). Free memory was 56.8MB in the beginning and 99.4MB in the end (delta: -42.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.78ms. Allocated memory is still 130.0MB. Free memory was 98.6MB in the beginning and 97.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.17ms. Allocated memory is still 130.0MB. Free memory was 97.3MB in the beginning and 95.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 315.26ms. Allocated memory is still 130.0MB. Free memory was 95.7MB in the beginning and 82.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 618.74ms. Allocated memory is still 130.0MB. Free memory was 81.8MB in the beginning and 70.7MB in the end (delta: 11.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Witness Printer took 57.06ms. Allocated memory is still 130.0MB. Free memory was 70.7MB in the beginning and 61.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; VAL [ma={3:0}, mb={4:0}] [L693] 0 int data1, data2; VAL [data1=0, data2=0, ma={3:0}, mb={4:0}] [L716] 0 pthread_t t1, t2; VAL [data1=0, data2=0, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L719] 0 data1 = 10 VAL [data1=10, data2=0, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L720] 0 data2 = 10 VAL [data1=10, data2=10, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t1, 0, thread1, 0)=-1, t1={6:0}, t2={5:0}] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, pthread_create(&t2, 0, thread2, 0)=0, t1={6:0}, t2={5:0}] [L707] 2 data1+=5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=15, data2=10, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [arg={0:0}, arg={0:0}, arg={0:0}, data1=15, data2=4, ma={3:0}, mb={4:0}] [L712] 2 return 0; VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=15, data2=4, ma={3:0}, mb={4:0}] [L697] 1 data1++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=4, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L702] 1 return 0; VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L723] 0 \read(t1) VAL [\read(t1)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\read(t1)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] 0 \read(t2) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L725] COND TRUE 0 data1==16 && data2==5 VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] [L727] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1={6:0}, t2={5:0}] - UnprovableResult [Line: 721]: 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. - UnprovableResult [Line: 722]: 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 5 procedures, 123 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: 0.4s, 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=172occurred 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, 80 NumberOfCodeBlocks, 80 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! [2022-07-22 21:15:54,072 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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