/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stateful01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 22:52:35,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 22:52:35,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 22:52:35,363 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 22:52:35,363 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 22:52:35,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 22:52:35,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 22:52:35,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 22:52:35,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 22:52:35,380 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 22:52:35,381 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 22:52:35,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 22:52:35,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 22:52:35,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 22:52:35,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 22:52:35,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 22:52:35,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 22:52:35,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 22:52:35,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 22:52:35,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 22:52:35,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 22:52:35,399 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 22:52:35,400 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 22:52:35,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 22:52:35,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 22:52:35,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 22:52:35,403 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 22:52:35,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 22:52:35,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 22:52:35,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 22:52:35,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 22:52:35,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 22:52:35,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 22:52:35,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 22:52:35,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 22:52:35,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 22:52:35,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 22:52:35,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 22:52:35,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 22:52:35,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 22:52:35,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 22:52:35,414 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-RepeatedSemanticLbe.epf [2022-12-05 22:52:35,464 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 22:52:35,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 22:52:35,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 22:52:35,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 22:52:35,467 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 22:52:35,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 22:52:35,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 22:52:35,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 22:52:35,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 22:52:35,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 22:52:35,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 22:52:35,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 22:52:35,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 22:52:35,469 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 22:52:35,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 22:52:35,469 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 22:52:35,469 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 22:52:35,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 22:52:35,470 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 22:52:35,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 22:52:35,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 22:52:35,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:52:35,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 22:52:35,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 22:52:35,471 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 22:52:35,471 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 22:52:35,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 22:52:35,471 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=REPEATED_LIPTON_PN [2022-12-05 22:52:35,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 22:52:35,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 22:52:35,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 22:52:35,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 22:52:35,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 22:52:35,812 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 22:52:35,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stateful01-1.i [2022-12-05 22:52:37,000 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 22:52:37,267 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 22:52:37,267 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i [2022-12-05 22:52:37,277 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad9921367/5b8a640e843a46c7b0dc8036da2b7465/FLAGc5d281089 [2022-12-05 22:52:37,290 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad9921367/5b8a640e843a46c7b0dc8036da2b7465 [2022-12-05 22:52:37,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 22:52:37,293 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 22:52:37,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 22:52:37,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 22:52:37,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 22:52:37,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6995bfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37, skipping insertion in model container [2022-12-05 22:52:37,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 22:52:37,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 22:52:37,591 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2022-12-05 22:52:37,595 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:52:37,606 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 22:52:37,661 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/stateful01-1.i[30826,30839] [2022-12-05 22:52:37,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 22:52:37,708 INFO L208 MainTranslator]: Completed translation [2022-12-05 22:52:37,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37 WrapperNode [2022-12-05 22:52:37,709 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 22:52:37,710 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 22:52:37,710 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 22:52:37,711 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 22:52:37,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,757 INFO L138 Inliner]: procedures = 168, calls = 34, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 63 [2022-12-05 22:52:37,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 22:52:37,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 22:52:37,759 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 22:52:37,759 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 22:52:37,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,777 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 22:52:37,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 22:52:37,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 22:52:37,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 22:52:37,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (1/1) ... [2022-12-05 22:52:37,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 22:52:37,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 22:52:37,807 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) [2022-12-05 22:52:37,809 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 [2022-12-05 22:52:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 22:52:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 22:52:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 22:52:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 22:52:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 22:52:37,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 22:52:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-05 22:52:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 22:52:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 22:52:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 22:52:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 22:52:37,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 22:52:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 22:52:37,840 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 22:52:37,942 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 22:52:37,943 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 22:52:38,148 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 22:52:38,154 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 22:52:38,154 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-05 22:52:38,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:52:38 BoogieIcfgContainer [2022-12-05 22:52:38,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 22:52:38,157 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 22:52:38,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 22:52:38,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 22:52:38,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 10:52:37" (1/3) ... [2022-12-05 22:52:38,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae44ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:52:38, skipping insertion in model container [2022-12-05 22:52:38,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 10:52:37" (2/3) ... [2022-12-05 22:52:38,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae44ddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 10:52:38, skipping insertion in model container [2022-12-05 22:52:38,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 10:52:38" (3/3) ... [2022-12-05 22:52:38,162 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2022-12-05 22:52:38,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 22:52:38,177 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 22:52:38,177 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 22:52:38,270 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-05 22:52:38,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 89 transitions, 194 flow [2022-12-05 22:52:38,398 INFO L130 PetriNetUnfolder]: 1/87 cut-off events. [2022-12-05 22:52:38,398 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 22:52:38,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 1/87 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. 0/85 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2022-12-05 22:52:38,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 89 transitions, 194 flow [2022-12-05 22:52:38,407 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 77 transitions, 166 flow [2022-12-05 22:52:38,409 INFO L195 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-05 22:52:38,436 INFO L167 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 77 transitions, 166 flow [2022-12-05 22:52:38,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 77 transitions, 166 flow [2022-12-05 22:52:38,481 INFO L130 PetriNetUnfolder]: 0/77 cut-off events. [2022-12-05 22:52:38,482 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 22:52:38,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 0/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2022-12-05 22:52:38,484 INFO L184 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 77 transitions, 166 flow [2022-12-05 22:52:38,484 INFO L188 LiptonReduction]: Number of co-enabled transitions 732 [2022-12-05 22:52:42,357 INFO L203 LiptonReduction]: Total number of compositions: 54 [2022-12-05 22:52:42,370 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 22:52:42,375 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=false, mAutomataTypeConcurrency=REPEATED_LIPTON_PN, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e7481b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 22:52:42,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-05 22:52:42,380 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2022-12-05 22:52:42,380 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-05 22:52:42,380 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 22:52:42,381 INFO L213 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] [2022-12-05 22:52:42,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-05 22:52:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 22:52:42,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1235596550, now seen corresponding path program 1 times [2022-12-05 22:52:42,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 22:52:42,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123244460] [2022-12-05 22:52:42,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 22:52:42,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 22:52:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 22:52:42,543 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-05 22:52:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-05 22:52:42,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-05 22:52:42,657 INFO L373 BasicCegarLoop]: Counterexample is feasible [2022-12-05 22:52:42,658 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-05 22:52:42,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-05 22:52:42,661 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-05 22:52:42,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 22:52:42,662 INFO L458 BasicCegarLoop]: Path program histogram: [1] [2022-12-05 22:52:42,671 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-05 22:52:42,672 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-05 22:52:42,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.12 10:52:42 BasicIcfg [2022-12-05 22:52:42,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-05 22:52:42,728 INFO L158 Benchmark]: Toolchain (without parser) took 5434.82ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 176.5MB in the beginning and 203.7MB in the end (delta: -27.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-05 22:52:42,729 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 178.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 22:52:42,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 415.11ms. Allocated memory is still 201.3MB. Free memory was 176.5MB in the beginning and 156.5MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-05 22:52:42,730 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.28ms. Allocated memory is still 201.3MB. Free memory was 156.5MB in the beginning and 154.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-05 22:52:42,730 INFO L158 Benchmark]: Boogie Preprocessor took 22.03ms. Allocated memory is still 201.3MB. Free memory was 154.9MB in the beginning and 153.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-05 22:52:42,731 INFO L158 Benchmark]: RCFGBuilder took 374.52ms. Allocated memory is still 201.3MB. Free memory was 153.4MB in the beginning and 139.2MB in the end (delta: 14.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-12-05 22:52:42,731 INFO L158 Benchmark]: TraceAbstraction took 4570.29ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 138.2MB in the beginning and 203.7MB in the end (delta: -65.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-05 22:52:42,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 178.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 415.11ms. Allocated memory is still 201.3MB. Free memory was 176.5MB in the beginning and 156.5MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.28ms. Allocated memory is still 201.3MB. Free memory was 156.5MB in the beginning and 154.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.03ms. Allocated memory is still 201.3MB. Free memory was 154.9MB in the beginning and 153.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 374.52ms. Allocated memory is still 201.3MB. Free memory was 153.4MB in the beginning and 139.2MB in the end (delta: 14.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 4570.29ms. Allocated memory was 201.3MB in the beginning and 242.2MB in the end (delta: 40.9MB). Free memory was 138.2MB in the beginning and 203.7MB in the end (delta: -65.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 84 PlacesBefore, 30 PlacesAfterwards, 77 TransitionsBefore, 23 TransitionsAfterwards, 732 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 35 TrivialYvCompositions, 19 ConcurrentYvCompositions, 0 ChoiceCompositions, 54 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 603, independent: 546, independent conditional: 546, independent unconditional: 0, dependent: 57, dependent conditional: 57, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 603, independent: 546, independent conditional: 0, independent unconditional: 546, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 603, independent: 546, independent conditional: 0, independent unconditional: 546, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 603, independent: 546, independent conditional: 0, independent unconditional: 546, dependent: 57, dependent conditional: 0, dependent unconditional: 57, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 464, independent: 435, independent conditional: 0, independent unconditional: 435, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 464, independent: 415, independent conditional: 0, independent unconditional: 415, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 49, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 119, independent: 58, independent conditional: 0, independent unconditional: 58, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 603, independent: 111, independent conditional: 0, independent unconditional: 111, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 464, unknown conditional: 0, unknown unconditional: 464] , Statistics on independence cache: Total cache size (in pairs): 595, Positive cache size: 566, Positive conditional cache size: 0, Positive unconditional cache size: 566, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - 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; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [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)=-2, 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)=-1, 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; [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++ [L702] 1 return 0; [L723] 0 \read(t1) VAL [\read(t1)=-2, \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)=-2, \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)=-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] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\read(t2)=-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}] [L725] COND TRUE 0 data1==16 && data2==5 [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: 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. - 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 119 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: 4.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 23 NumberOfCodeBlocks, 23 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! [2022-12-05 22:52:42,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...