./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 6c24879c 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-?-6c24879 [2022-07-12 09:59:30,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:59:30,997 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:59:31,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:59:31,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:59:31,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:59:31,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:59:31,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:59:31,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:59:31,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:59:31,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:59:31,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:59:31,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:59:31,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:59:31,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:59:31,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:59:31,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:59:31,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:59:31,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:59:31,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:59:31,059 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:59:31,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:59:31,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:59:31,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:59:31,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:59:31,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:59:31,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:59:31,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:59:31,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:59:31,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:59:31,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:59:31,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:59:31,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:59:31,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:59:31,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:59:31,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:59:31,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:59:31,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:59:31,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:59:31,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:59:31,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:59:31,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:59:31,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:59:31,100 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:59:31,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:59:31,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:59:31,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:59:31,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:59:31,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:59:31,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:59:31,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:59:31,102 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:59:31,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:59:31,103 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:59:31,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:59:31,104 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:59:31,104 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:59:31,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:59:31,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:59:31,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:59:31,104 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:59:31,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:59:31,105 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:59:31,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:59:31,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:59:31,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:59:31,105 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:59:31,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:59:31,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:59:31,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:59:31,106 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:59:31,106 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:59:31,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:59:31,107 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:59:31,107 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:59:31,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:59:31,107 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2022-07-12 09:59:31,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:59:31,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:59:31,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:59:31,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:59:31,322 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:59:31,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stateful01-1.i [2022-07-12 09:59:31,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ac67eb1/868e1d1270404d7fae38db64c0554af0/FLAGe93968361 [2022-07-12 09:59:31,754 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:59:31,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stateful01-1.i [2022-07-12 09:59:31,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ac67eb1/868e1d1270404d7fae38db64c0554af0/FLAGe93968361 [2022-07-12 09:59:32,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ac67eb1/868e1d1270404d7fae38db64c0554af0 [2022-07-12 09:59:32,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:59:32,174 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:59:32,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:59:32,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:59:32,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:59:32,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1cf1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32, skipping insertion in model container [2022-07-12 09:59:32,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:59:32,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:59:32,427 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] [2022-07-12 09:59:32,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:59:32,441 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:59:32,490 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] [2022-07-12 09:59:32,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:59:32,518 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:59:32,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32 WrapperNode [2022-07-12 09:59:32,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:59:32,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:59:32,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:59:32,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:59:32,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,554 INFO L137 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-07-12 09:59:32,555 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:59:32,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:59:32,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:59:32,556 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:59:32,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,562 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:59:32,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:59:32,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:59:32,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:59:32,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (1/1) ... [2022-07-12 09:59:32,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:59:32,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:59:32,634 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) [2022-07-12 09:59:32,644 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 [2022-07-12 09:59:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 09:59:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 09:59:32,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 09:59:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 09:59:32,667 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 09:59:32,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 09:59:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-07-12 09:59:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:59:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 09:59:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 09:59:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:59:32,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:59:32,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:59:32,671 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 09:59:32,739 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:59:32,741 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:59:32,896 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:59:32,900 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:59:32,901 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 09:59:32,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:59:32 BoogieIcfgContainer [2022-07-12 09:59:32,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:59:32,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:59:32,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:59:32,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:59:32,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:59:32" (1/3) ... [2022-07-12 09:59:32,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363cca13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:59:32, skipping insertion in model container [2022-07-12 09:59:32,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:59:32" (2/3) ... [2022-07-12 09:59:32,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@363cca13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:59:32, skipping insertion in model container [2022-07-12 09:59:32,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:59:32" (3/3) ... [2022-07-12 09:59:32,911 INFO L111 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-07-12 09:59:32,914 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 09:59:32,924 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:59:32,925 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 09:59:32,925 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 09:59:32,977 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-12 09:59:33,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 93 transitions, 202 flow [2022-07-12 09:59:33,054 INFO L129 PetriNetUnfolder]: 1/91 cut-off events. [2022-07-12 09:59:33,054 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 09:59:33,056 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. [2022-07-12 09:59:33,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 93 transitions, 202 flow [2022-07-12 09:59:33,059 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 80 transitions, 172 flow [2022-07-12 09:59:33,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:59:33,080 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@485549ea, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@f6a6f23 [2022-07-12 09:59:33,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-12 09:59:33,102 INFO L129 PetriNetUnfolder]: 0/79 cut-off events. [2022-07-12 09:59:33,102 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-12 09:59:33,103 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 09:59:33,103 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] [2022-07-12 09:59:33,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-12 09:59:33,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:59:33,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1215155975, now seen corresponding path program 1 times [2022-07-12 09:59:33,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:59:33,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695012969] [2022-07-12 09:59:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:59:33,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:59:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:59:33,255 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 09:59:33,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 09:59:33,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 09:59:33,387 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 09:59:33,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-12 09:59:33,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-12 09:59:33,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-12 09:59:33,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:59:33,391 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 09:59:33,396 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 09:59:33,396 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 09:59:33,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 09:59:33 BasicIcfg [2022-07-12 09:59:33,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 09:59:33,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 09:59:33,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 09:59:33,451 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 09:59:33,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:59:32" (3/4) ... [2022-07-12 09:59:33,453 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 09:59:33,501 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 09:59:33,501 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 09:59:33,503 INFO L158 Benchmark]: Toolchain (without parser) took 1327.64ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 55.1MB in the beginning and 50.5MB in the end (delta: 4.6MB). Peak memory consumption was 34.2MB. Max. memory is 16.1GB. [2022-07-12 09:59:33,504 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 09:59:33,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 342.71ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 54.9MB in the beginning and 88.8MB in the end (delta: -33.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-07-12 09:59:33,504 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.29ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:59:33,506 INFO L158 Benchmark]: Boogie Preprocessor took 42.89ms. Allocated memory is still 121.6MB. Free memory was 86.7MB in the beginning and 85.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 09:59:33,507 INFO L158 Benchmark]: RCFGBuilder took 302.95ms. Allocated memory is still 121.6MB. Free memory was 85.3MB in the beginning and 72.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 09:59:33,507 INFO L158 Benchmark]: TraceAbstraction took 546.15ms. Allocated memory is still 121.6MB. Free memory was 72.4MB in the beginning and 60.2MB in the end (delta: 12.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. [2022-07-12 09:59:33,508 INFO L158 Benchmark]: Witness Printer took 51.30ms. Allocated memory is still 121.6MB. Free memory was 60.2MB in the beginning and 50.5MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 09:59:33,510 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 60.2MB in the beginning and 60.1MB in the end (delta: 26.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 342.71ms. Allocated memory was 90.2MB in the beginning and 121.6MB in the end (delta: 31.5MB). Free memory was 54.9MB in the beginning and 88.8MB in the end (delta: -33.9MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.29ms. Allocated memory is still 121.6MB. Free memory was 88.8MB in the beginning and 86.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.89ms. Allocated memory is still 121.6MB. Free memory was 86.7MB in the beginning and 85.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 302.95ms. Allocated memory is still 121.6MB. Free memory was 85.3MB in the beginning and 72.7MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 546.15ms. Allocated memory is still 121.6MB. Free memory was 72.4MB in the beginning and 60.2MB in the end (delta: 12.1MB). Peak memory consumption was 15.3MB. Max. memory is 16.1GB. * Witness Printer took 51.30ms. Allocated memory is still 121.6MB. Free memory was 60.2MB in the beginning and 50.5MB in the end (delta: 9.8MB). 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! [2022-07-12 09:59:33,536 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